diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index a15ba0c2..00000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index 0fb61964..10ef133f 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -1,10 +1,10 @@
 Make sure these boxes are checked before submitting your issue -- thanks for reporting issues back to Parse Server!
 
--[ ] You've met the [prerequisites](https://github.com/ParsePlatform/parse-server/wiki/Parse-Server-Guide#prerequisites).
+- [ ] You've met the [prerequisites](https://github.com/ParsePlatform/parse-server/wiki/Parse-Server-Guide#prerequisites).
 
--[ ] You're running the [latest version](https://github.com/ParsePlatform/parse-server/releases) of Parse Server.
+- [ ] You're running the [latest version](https://github.com/ParsePlatform/parse-server/releases) of Parse Server.
 
--[ ] You've searched through [existing issues](https://github.com/ParsePlatform/parse-server/issues?utf8=%E2%9C%93&q=). Chances are that your issue has been reported or resolved before.
+- [ ] You've searched through [existing issues](https://github.com/ParsePlatform/parse-server/issues?utf8=%E2%9C%93&q=). Chances are that your issue has been reported or resolved before.
 
 #### Environment Setup
 
diff --git a/.gitignore b/.gitignore
index de88257b..8ea322c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,6 @@ lib/
 
 # cache folder
 .cache
+
+# Mac DS_Store files
+.DS_Store
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb02c932..d06701d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,41 @@
 ## Parse Server Changelog
 
+### 2.1.5 (3/9/2016)
+
+* New: FileAdapter for Google Cloud Storage [\#708](https://github.com/ParsePlatform/parse-server/pull/708) (mcdonamp)
+* Improvement: Minimize extra schema queries in some scenarios. [\#919](https://github.com/ParsePlatform/parse-server/pull/919) (Marco129)
+* Improvement: Move DatabaseController and Schema fully to adaptive mongo collection. [\#909](https://github.com/ParsePlatform/parse-server/pull/909) (nlutsenko)
+* Improvement: Cleanup PushController/PushRouter, remove raw mongo collection access. [\#903](https://github.com/ParsePlatform/parse-server/pull/903) (nlutsenko)
+* Improvement: Increment badge the right way [\#902](https://github.com/ParsePlatform/parse-server/pull/902) (flovilmart)
+* Improvement: Migrate ParseGlobalConfig to new database storage API. [\#901](https://github.com/ParsePlatform/parse-server/pull/901) (nlutsenko)
+* Improvement: Improve delete flow for non-existent \_Join collection [\#881](https://github.com/ParsePlatform/parse-server/pull/881) (Marco129)
+* Improvement: Adding a role scenario test for issue 827 [\#878](https://github.com/ParsePlatform/parse-server/pull/878) (gfosco)
+* Improvement: Test empty authData block on login for \#413 [\#863](https://github.com/ParsePlatform/parse-server/pull/863) (gfosco)
+* Improvement: Modified the npm dev script to support Windows [\#846](https://github.com/ParsePlatform/parse-server/pull/846) (aneeshd16)
+* Improvement: Move HooksController to use MongoCollection instead of direct Mongo access. [\#844](https://github.com/ParsePlatform/parse-server/pull/844) (nlutsenko)
+* Improvement: Adds public\_html and views for packaging [\#839](https://github.com/ParsePlatform/parse-server/pull/839) (flovilmart)
+* Improvement: Better support for windows builds [\#831](https://github.com/ParsePlatform/parse-server/pull/831) (flovilmart)
+* Improvement: Convert Schema.js to ES6 class. [\#826](https://github.com/ParsePlatform/parse-server/pull/826) (nlutsenko)
+* Improvement: Remove duplicated instructions [\#816](https://github.com/ParsePlatform/parse-server/pull/816) (hramos)
+* Improvement: Completely migrate SchemasRouter to new MongoCollection API. [\#794](https://github.com/ParsePlatform/parse-server/pull/794) (nlutsenko)
+* Fix: Do not require where clause in $dontSelect condition on queries. [\#925](https://github.com/ParsePlatform/parse-server/pull/925) (nlutsenko)
+* Fix: Make sure that ACLs propagate to before/after save hooks. [\#924](https://github.com/ParsePlatform/parse-server/pull/924) (nlutsenko)
+* Fix: Support params option in Parse.Cloud.httpRequest. [\#912](https://github.com/ParsePlatform/parse-server/pull/912) (carmenlau)
+* Fix: Fix flaky Parse.GeoPoint test. [\#908](https://github.com/ParsePlatform/parse-server/pull/908) (nlutsenko)
+* Fix: Handle legacy \_client\_permissions key in \_SCHEMA. [\#900](https://github.com/ParsePlatform/parse-server/pull/900) (drew-gross)
+* Fix: Fixes bug when querying equalTo on objectId and relation [\#887](https://github.com/ParsePlatform/parse-server/pull/887) (flovilmart)
+* Fix: Allow crossdomain on filesRouter [\#876](https://github.com/ParsePlatform/parse-server/pull/876) (flovilmart)
+* Fix: Remove limit when counting results. [\#867](https://github.com/ParsePlatform/parse-server/pull/867) (gfosco)
+* Fix: beforeSave changes should propagate to the response [\#865](https://github.com/ParsePlatform/parse-server/pull/865) (gfosco)
+* Fix: Delete relation field when \_Join collection not exist [\#864](https://github.com/ParsePlatform/parse-server/pull/864) (Marco129)
+* Fix: Related query on non-existing column [\#861](https://github.com/ParsePlatform/parse-server/pull/861) (gfosco)
+* Fix: Update markdown in .github/ISSUE\_TEMPLATE.md [\#859](https://github.com/ParsePlatform/parse-server/pull/859) (igorshubovych)
+* Fix: Issue with creating wrong \_Session for Facebook login [\#857](https://github.com/ParsePlatform/parse-server/pull/857) (tobernguyen)
+* Fix: Leak warnings in tests, use mongodb-runner from node\_modules [\#843](https://github.com/ParsePlatform/parse-server/pull/843) (drew-gross)
+* Fix: Reversed roles lookup [\#841](https://github.com/ParsePlatform/parse-server/pull/841) (flovilmart)
+* Fix: Improves loading of Push Adapter, fix loading of S3Adapter [\#833](https://github.com/ParsePlatform/parse-server/pull/833) (flovilmart)
+* Fix: Add field to system schema [\#828](https://github.com/ParsePlatform/parse-server/pull/828) (Marco129)
+
 ### 2.1.4 (3/3/2016)
 
 * New: serverInfo endpoint that returns server version and info about the server's features
diff --git a/README.md b/README.md
index 8d3bb473..93b5f644 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,38 @@ PARSE_SERVER_MAX_UPLOAD_SIZE
 
 ```
 
+##### Configuring File Adapters
+Parse Server allows developers to choose from several options when hosting files: the `GridStoreAdapter`, which backed by MongoDB; the `S3Adapter`, which is backed by [Amazon S3](https://aws.amazon.com/s3/); or the `GCSAdapter`, which is backed by [Google Cloud Storage](https://cloud.google.com/storage/).
+
+`GridStoreAdapter` is used by default and requires no setup, but if you're interested in using S3 or GCS, additional configuration information is available below.
+
+###### Configuring `S3Adapter`
+
+You can use the following environment variable setup to enable the S3 adapter:
+
+```js
+S3_ACCESS_KEY
+S3_SECRET_KEY
+S3_BUCKET
+S3_REGION
+S3_BUCKET_PREFIX
+S3_DIRECT_ACCESS
+
+```
+
+###### Configuring `GCSAdapter`
+
+You can use the following environment variable setup to enable the GCS adapter:
+
+```js
+GCP_PROJECT_ID
+GCP_KEYFILE_PATH
+GCS_BUCKET
+GCS_BUCKET_PREFIX
+GCS_DIRECT_ACCESS
+
+```
+
 ## Contributing
 
 We really want Parse to be yours, to see it grow and thrive in the open source community. Please see the [Contributing to Parse Server guide](CONTRIBUTING.md).
diff --git a/package.json b/package.json
index d2a0294c..60bf17f8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "parse-server",
-  "version": "2.1.4",
+  "version": "2.1.5",
   "description": "An express module providing a Parse-compatible API server",
   "main": "lib/index.js",
   "repository": {
@@ -10,6 +10,8 @@
   "files": [
     "bin/",
     "lib/",
+    "public_html/",
+    "views/",
     "LICENSE",
     "PATENTS",
     "README.md"
@@ -26,6 +28,7 @@
     "commander": "^2.9.0",
     "deepcopy": "^0.6.1",
     "express": "^4.13.4",
+    "gcloud": "^0.28.0",
     "mailgun-js": "^0.7.7",
     "mime": "^1.3.4",
     "mongodb": "~2.1.0",
@@ -53,11 +56,11 @@
     "nodemon": "^1.8.1"
   },
   "scripts": {
-    "dev": "npm run build && bin/dev",
+    "dev": "npm run build && node bin/dev",
     "build": "./node_modules/.bin/babel src/ -d lib/",
     "pretest": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=3.0.8} ./node_modules/.bin/mongodb-runner start",
     "test": "cross-env NODE_ENV=test TESTING=1 ./node_modules/.bin/babel-node $COVERAGE_OPTION ./node_modules/jasmine/bin/jasmine.js",
-    "posttest": "mongodb-runner stop",
+    "posttest": "./node_modules/.bin/mongodb-runner stop",
     "coverage": "cross-env COVERAGE_OPTION='./node_modules/babel-istanbul/lib/cli.js cover -x **/spec/**' npm test",
     "start": "node ./bin/parse-server",
     "prepublish": "npm run build"
diff --git a/spec/AdapterLoader.spec.js b/spec/AdapterLoader.spec.js
index f32867e0..56bf0d44 100644
--- a/spec/AdapterLoader.spec.js
+++ b/spec/AdapterLoader.spec.js
@@ -1,44 +1,47 @@
 
 var loadAdapter = require("../src/Adapters/AdapterLoader").loadAdapter;
 var FilesAdapter = require("../src/Adapters/Files/FilesAdapter").default;
+var ParsePushAdapter = require("../src/Adapters/Push/ParsePushAdapter");
+var S3Adapter = require("../src/Adapters/Files/S3Adapter").default;
+var GCSAdapter = require("../src/Adapters/Files/GCSAdapter").default;
 
 describe("AdapterLoader", ()=>{
-    
+
   it("should instantiate an adapter from string in object", (done) => {
     var adapterPath = require('path').resolve("./spec/MockAdapter");
 
     var adapter = loadAdapter({
       adapter: adapterPath,
       options: {
-        key: "value", 
+        key: "value",
         foo: "bar"
       }
     });
-    
+
     expect(adapter instanceof Object).toBe(true);
     expect(adapter.options.key).toBe("value");
     expect(adapter.options.foo).toBe("bar");
     done();
   });
-  
+
   it("should instantiate an adapter from string", (done) => {
     var adapterPath = require('path').resolve("./spec/MockAdapter");
     var adapter = loadAdapter(adapterPath);
-    
+
     expect(adapter instanceof Object).toBe(true);
     done();
   });
-  
+
   it("should instantiate an adapter from string that is module", (done) => {
     var adapterPath = require('path').resolve("./src/Adapters/Files/FilesAdapter");
     var adapter = loadAdapter({
       adapter: adapterPath
     });
-    
+
     expect(adapter instanceof FilesAdapter).toBe(true);
     done();
   });
-  
+
   it("should instantiate an adapter from function/Class", (done) => {
     var adapter = loadAdapter({
       adapter: FilesAdapter
@@ -46,27 +49,27 @@ describe("AdapterLoader", ()=>{
     expect(adapter instanceof FilesAdapter).toBe(true);
     done();
   });
-  
+
   it("should instantiate the default adapter from Class", (done) => {
     var adapter = loadAdapter(null, FilesAdapter);
     expect(adapter instanceof FilesAdapter).toBe(true);
     done();
   });
-  
+
   it("should use the default adapter", (done) => {
     var defaultAdapter = new FilesAdapter();
     var adapter = loadAdapter(null, defaultAdapter);
     expect(adapter instanceof FilesAdapter).toBe(true);
     done();
   });
-  
+
   it("should use the provided adapter", (done) => {
     var originalAdapter = new FilesAdapter();
     var adapter = loadAdapter(originalAdapter);
     expect(adapter).toBe(originalAdapter);
     done();
   });
-  
+
   it("should fail loading an improperly configured adapter", (done) => {
     var Adapter = function(options) {
       if (!options.foo) {
@@ -77,11 +80,43 @@ describe("AdapterLoader", ()=>{
       param: "key",
       doSomething: function() {}
     };
-     
+
     expect(() => {
       var adapter = loadAdapter(adapterOptions, Adapter);
       expect(adapter).toEqual(adapterOptions);
     }).not.toThrow("foo is required for that adapter");
     done();
   });
+
+  it("should load push adapter from options", (done) => {
+    var options = {
+      ios: {
+        bundleId: 'bundle.id'
+      }
+    }
+    expect(() => {
+      var adapter = loadAdapter(undefined, ParsePushAdapter, options);
+      expect(adapter.constructor).toBe(ParsePushAdapter);
+      expect(adapter).not.toBe(undefined);
+    }).not.toThrow();
+    done();
+  });
+
+  it("should load S3Adapter from direct passing", (done) => {
+    var s3Adapter = new S3Adapter("key", "secret", "bucket")
+    expect(() => {
+      var adapter = loadAdapter(s3Adapter, FilesAdapter);
+      expect(adapter).toBe(s3Adapter);
+    }).not.toThrow();
+    done();
+  })
+
+  it("should load GCSAdapter from direct passing", (done) => {
+    var gcsAdapter = new GCSAdapter("projectId", "path/to/keyfile", "bucket")
+    expect(() => {
+      var adapter = loadAdapter(gcsAdapter, FilesAdapter);
+      expect(adapter).toBe(gcsAdapter);
+    }).not.toThrow();
+    done();
+  })
 });
diff --git a/spec/FilesController.spec.js b/spec/FilesController.spec.js
index 2306676e..3b2108e7 100644
--- a/spec/FilesController.spec.js
+++ b/spec/FilesController.spec.js
@@ -1,6 +1,7 @@
 var FilesController = require('../src/Controllers/FilesController').FilesController;
 var GridStoreAdapter = require("../src/Adapters/Files/GridStoreAdapter").GridStoreAdapter;
 var S3Adapter = require("../src/Adapters/Files/S3Adapter").S3Adapter;
+var GCSAdapter = require("../src/Adapters/Files/GCSAdapter").GCSAdapter;
 var Config = require("../src/Config");
 
 var FCTestFactory = require("./FilesControllerTestFactory");
@@ -8,26 +9,44 @@ var FCTestFactory = require("./FilesControllerTestFactory");
 
 // Small additional tests to improve overall coverage
 describe("FilesController",()=>{
-  
+
   // Test the grid store adapter
   var gridStoreAdapter = new GridStoreAdapter('mongodb://localhost:27017/parse');
   FCTestFactory.testAdapter("GridStoreAdapter", gridStoreAdapter);
-  
+
   if (process.env.S3_ACCESS_KEY && process.env.S3_SECRET_KEY) {
-    
+
     // Test the S3 Adapter
     var s3Adapter = new S3Adapter(process.env.S3_ACCESS_KEY, process.env.S3_SECRET_KEY, 'parse.server.tests');
-    
+
     FCTestFactory.testAdapter("S3Adapter",s3Adapter);
-    
+
     // Test S3 with direct access
     var s3DirectAccessAdapter = new S3Adapter(process.env.S3_ACCESS_KEY, process.env.S3_SECRET_KEY, 'parse.server.tests', {
       directAccess: true
     });
-    
+
     FCTestFactory.testAdapter("S3AdapterDirect", s3DirectAccessAdapter);
-    
+
   } else if (!process.env.TRAVIS) {
     console.log("set S3_ACCESS_KEY and S3_SECRET_KEY to test S3Adapter")
   }
+
+  if (process.env.GCP_PROJECT_ID && process.env.GCP_KEYFILE_PATH && process.env.GCS_BUCKET) {
+
+    // Test the GCS Adapter
+    var gcsAdapter = new GCSAdapter(process.env.GCP_PROJECT_ID, process.env.GCP_KEYFILE_PATH, process.env.GCS_BUCKET);
+
+    FCTestFactory.testAdapter("GCSAdapter", gcsAdapter);
+
+    // Test GCS with direct access
+    var gcsDirectAccessAdapter = new GCSAdapter(process.env.GCP_PROJECT_ID, process.env.GCP_KEYFILE_PATH, process.env.GCS_BUCKET, {
+      directAccess: true
+    });
+
+    FCTestFactory.testAdapter("GCSAdapterDirect", gcsDirectAccessAdapter);
+
+  } else if (!process.env.TRAVIS) {
+    console.log("set GCP_PROJECT_ID, GCP_KEYFILE_PATH, and GCS_BUCKET to test GCSAdapter")
+  }
 });
diff --git a/spec/FilesControllerTestFactory.js b/spec/FilesControllerTestFactory.js
index 217a383a..b467d031 100644
--- a/spec/FilesControllerTestFactory.js
+++ b/spec/FilesControllerTestFactory.js
@@ -1,35 +1,34 @@
-
 var FilesController = require('../src/Controllers/FilesController').FilesController;
 var Config = require("../src/Config");
 
 var testAdapter = function(name, adapter) {
   // Small additional tests to improve overall coverage
-  
+
   var config = new Config(Parse.applicationId);
   var filesController = new FilesController(adapter);
 
   describe("FilesController with "+name,()=>{
-    
+
     it("should properly expand objects", (done) => {
-      
+
       var result = filesController.expandFilesInObject(config, function(){});
-      
+
       expect(result).toBeUndefined();
-      
+
       var fullFile = {
         type: '__type',
         url: "http://an.url"
       }
-      
+
       var anObject = {
         aFile: fullFile
       }
       filesController.expandFilesInObject(config, anObject);
       expect(anObject.aFile.url).toEqual("http://an.url");
-      
+
       done();
-    }) 
-    
+    })
+
     it("should properly create, read, delete files", (done) => {
       var filename;
       filesController.createFile(config, "file.txt", "hello world").then( (result) => {
@@ -51,14 +50,14 @@ var testAdapter = function(name, adapter) {
         console.error(err);
         done();
       }).then((result) => {
-        
+
         filesController.getFileData(config, filename).then((res) => {
           fail("the file should be deleted");
           done();
         }, (err) => {
-          done();  
+          done();
         });
-        
+
       }, (err) => {
         fail("The adapter should delete the file");
         console.error(err);
diff --git a/spec/HTTPRequest.spec.js b/spec/HTTPRequest.spec.js
index ad4e289f..abc5decf 100644
--- a/spec/HTTPRequest.spec.js
+++ b/spec/HTTPRequest.spec.js
@@ -24,7 +24,11 @@ app.get("/301", function(req, res){
 
 app.post('/echo', function(req, res){
   res.json(req.body);
-})
+});
+
+app.get('/qs', function(req, res){
+  res.json(req.query);
+});
 
 app.listen(13371);
 
@@ -193,4 +197,35 @@ describe("httpRequest", () => {
       }
     });
   })
+
+  it("should params object to query string", (done) => {
+    httpRequest({
+      url: httpRequestServer+"/qs",
+      params: {
+         foo: "bar"
+      }
+    }).then(function(httpResponse){
+      expect(httpResponse.status).toBe(200);
+      expect(httpResponse.data).toEqual({foo: "bar"});
+      done();
+    }, function(){
+      fail("should not fail");
+      done();
+    })
+  });
+
+  it("should params string to query string", (done) => {
+    httpRequest({
+      url: httpRequestServer+"/qs",
+      params: "foo=bar&foo2=bar2"
+    }).then(function(httpResponse){
+      expect(httpResponse.status).toBe(200);
+      expect(httpResponse.data).toEqual({foo: "bar", foo2: 'bar2'});
+      done();
+    }, function(){
+      fail("should not fail");
+      done();
+    })
+  });
+
 });
diff --git a/spec/Parse.Push.spec.js b/spec/Parse.Push.spec.js
new file mode 100644
index 00000000..a2b71d5f
--- /dev/null
+++ b/spec/Parse.Push.spec.js
@@ -0,0 +1,59 @@
+describe('Parse.Push', () => {
+  it('should properly send push', (done) => {
+      var pushAdapter = {
+        send: function(body, installations) {
+          var badge = body.data.badge;
+          installations.forEach((installation) => {
+            if (installation.deviceType == "ios") {
+              expect(installation.badge).toEqual(badge);
+              expect(installation.originalBadge+1).toEqual(installation.badge);
+            } else {
+              expect(installation.badge).toBeUndefined();
+            }
+          });
+          return Promise.resolve({
+            body: body,
+            installations: installations
+          });
+        },
+        getValidPushTypes: function() {
+          return ["ios", "android"];
+        }
+      }
+    setServerConfiguration({
+      appId: Parse.applicationId,
+      masterKey: Parse.masterKey,
+      serverURL: Parse.serverURL,
+      push: {
+        adapter: pushAdapter
+      }
+    });
+    var installations = [];
+    while(installations.length != 10) {
+      var installation = new Parse.Object("_Installation");
+      installation.set("installationId", "installation_"+installations.length);
+      installation.set("deviceToken","device_token_"+installations.length)
+      installation.set("badge", installations.length);
+      installation.set("originalBadge", installations.length);
+      installation.set("deviceType", "ios");
+      installations.push(installation);
+    }
+    Parse.Object.saveAll(installations).then(() => {
+      return Parse.Push.send({
+        where: {
+          deviceType: 'ios'
+        },
+        data: {
+          badge: 'Increment',
+          alert: 'Hello world!'
+        }
+      }, {useMasterKey: true});
+    })
+    .then(() => {
+      done();
+    }, (err) => {
+      console.error(err);
+      done();
+    });
+  });
+});
\ No newline at end of file
diff --git a/spec/ParseAPI.spec.js b/spec/ParseAPI.spec.js
index 42ac3491..bd29bcc7 100644
--- a/spec/ParseAPI.spec.js
+++ b/spec/ParseAPI.spec.js
@@ -4,6 +4,7 @@
 
 var DatabaseAdapter = require('../src/DatabaseAdapter');
 var request = require('request');
+const Parse = require("parse/node");
 
 describe('miscellaneous', function() {
   it('create a GameScore object', function(done) {
@@ -372,8 +373,8 @@ describe('miscellaneous', function() {
       done();
     });
   });
-  
-  it('test cloud function shoud echo keys', function(done) {
+
+  it('test cloud function should echo keys', function(done) {
     Parse.Cloud.run('echoKeys').then((result) => {
       expect(result.applicationId).toEqual(Parse.applicationId);
       expect(result.masterKey).toEqual(Parse.masterKey);
@@ -399,7 +400,7 @@ describe('miscellaneous', function() {
       expect(results.length).toEqual(1);
       expect(results[0]['foo']).toEqual('bar');
       done();
-    }).fail( err => {
+    }).fail(err => {
       fail(err);
       done();
     })
@@ -415,9 +416,9 @@ describe('miscellaneous', function() {
       // Make sure the required mock for all tests is unset.
       Parse.Cloud._removeHook("Triggers", "beforeSave", "GameScore");
       done();
-   });
-   
-   it('object is set on create and update', done => {
+    });
+
+    it('object is set on create and update', done => {
       let triggerTime = 0;
       // Register a mock beforeSave hook
       Parse.Cloud.beforeSave('GameScore', (req, res) => {
@@ -683,7 +684,7 @@ describe('miscellaneous', function() {
       // Make sure the checking has been triggered
       expect(triggerTime).toBe(2);
       // Clear mock afterSave
-       Parse.Cloud._removeHook("Triggers", "afterSave", "GameScore");
+      Parse.Cloud._removeHook("Triggers", "afterSave", "GameScore");
       done();
     }, function(error) {
       console.error(error);
@@ -732,6 +733,90 @@ describe('miscellaneous', function() {
     });
   });
 
+  it('beforeSave receives ACL', done => {
+    let triggerTime = 0;
+    // Register a mock beforeSave hook
+    Parse.Cloud.beforeSave('GameScore', function(req, res) {
+      let object = req.object;
+      if (triggerTime == 0) {
+        let acl = object.getACL();
+        expect(acl.getPublicReadAccess()).toBeTruthy();
+        expect(acl.getPublicWriteAccess()).toBeTruthy();
+      } else if (triggerTime == 1) {
+        let acl = object.getACL();
+        expect(acl.getPublicReadAccess()).toBeFalsy();
+        expect(acl.getPublicWriteAccess()).toBeTruthy();
+      } else {
+        res.error();
+      }
+      triggerTime++;
+      res.success();
+    });
+
+    let obj = new Parse.Object('GameScore');
+    let acl = new Parse.ACL();
+    acl.setPublicReadAccess(true);
+    acl.setPublicWriteAccess(true);
+    obj.setACL(acl);
+    obj.save().then(() => {
+      acl.setPublicReadAccess(false);
+      obj.setACL(acl);
+      return obj.save();
+    }).then(() => {
+      // Make sure the checking has been triggered
+      expect(triggerTime).toBe(2);
+      // Clear mock afterSave
+      Parse.Cloud._removeHook("Triggers", "beforeSave", "GameScore");
+      done();
+    }, error => {
+      console.error(error);
+      fail(error);
+      done();
+    });
+  });
+
+  it('afterSave receives ACL', done => {
+    let triggerTime = 0;
+    // Register a mock beforeSave hook
+    Parse.Cloud.afterSave('GameScore', function(req, res) {
+      let object = req.object;
+      if (triggerTime == 0) {
+        let acl = object.getACL();
+        expect(acl.getPublicReadAccess()).toBeTruthy();
+        expect(acl.getPublicWriteAccess()).toBeTruthy();
+      } else if (triggerTime == 1) {
+        let acl = object.getACL();
+        expect(acl.getPublicReadAccess()).toBeFalsy();
+        expect(acl.getPublicWriteAccess()).toBeTruthy();
+      } else {
+        res.error();
+      }
+      triggerTime++;
+      res.success();
+    });
+
+    let obj = new Parse.Object('GameScore');
+    let acl = new Parse.ACL();
+    acl.setPublicReadAccess(true);
+    acl.setPublicWriteAccess(true);
+    obj.setACL(acl);
+    obj.save().then(() => {
+      acl.setPublicReadAccess(false);
+      obj.setACL(acl);
+      return obj.save();
+    }).then(() => {
+      // Make sure the checking has been triggered
+      expect(triggerTime).toBe(2);
+      // Clear mock afterSave
+      Parse.Cloud._removeHook("Triggers", "afterSave", "GameScore");
+      done();
+    }, error => {
+      console.error(error);
+      fail(error);
+      done();
+    });
+  });
+
   it('test cloud function error handling', (done) => {
     // Register a function which will fail
     Parse.Cloud.define('willFail', (req, res) => {
@@ -967,6 +1052,23 @@ describe('miscellaneous', function() {
     });
   });
 
+  it('beforeSave change propagates through the save response', (done) => {
+    Parse.Cloud.beforeSave('ChangingObject', function(request, response) {
+      request.object.set('foo', 'baz');
+      response.success();
+    });
+    let obj = new Parse.Object('ChangingObject');
+    obj.save({ foo: 'bar' }).then((objAgain) => {
+      expect(objAgain.get('foo')).toEqual('baz');
+      Parse.Cloud._removeHook("Triggers", "beforeSave", "ChangingObject");
+      done();
+    }, (e) => {
+      Parse.Cloud._removeHook("Triggers", "beforeSave", "ChangingObject");
+      fail('Should not have failed to save.');
+      done();
+    });
+  });
+
   it('dedupes an installation properly and returns updatedAt', (done) => {
     let headers = {
       'Content-Type': 'application/json',
@@ -995,4 +1097,32 @@ describe('miscellaneous', function() {
     });
   });
 
+  it('android login providing empty authData block works', (done) => {
+    let headers = {
+      'Content-Type': 'application/json',
+      'X-Parse-Application-Id': 'test',
+      'X-Parse-REST-API-Key': 'rest'
+    };
+    let data = {
+      username: 'pulse1989',
+      password: 'password1234',
+      authData: {}
+    };
+    let requestOptions = {
+      headers: headers,
+      url: 'http://localhost:8378/1/users',
+      body: JSON.stringify(data)
+    };
+    request.post(requestOptions, (error, response, body) => {
+      expect(error).toBe(null);
+      requestOptions.url = 'http://localhost:8378/1/login';
+      request.get(requestOptions, (error, response, body) => {
+        expect(error).toBe(null);
+        let b = JSON.parse(body);
+        expect(typeof b['sessionToken']).toEqual('string');
+        done();
+      });
+    });
+  });
+
 });
diff --git a/spec/ParseGeoPoint.spec.js b/spec/ParseGeoPoint.spec.js
index 66613603..7d6a8291 100644
--- a/spec/ParseGeoPoint.spec.js
+++ b/spec/ParseGeoPoint.spec.js
@@ -39,37 +39,33 @@ describe('Parse.GeoPoint testing', () => {
     });
   });
 
-//
-// This test is disabled, since it's extremely flaky on Travis-CI.
-// Tracking issue: https://github.com/ParsePlatform/parse-server/issues/572
-//
-//  it('geo line', (done) => {
-//     var line = [];
-//     for (var i = 0; i < 10; ++i) {
-//       var obj = new TestObject();
-//       var point = new Parse.GeoPoint(i * 4.0 - 12.0, i * 3.2 - 11.0);
-//       obj.set('location', point);
-//       obj.set('construct', 'line');
-//       obj.set('seq', i);
-//       line.push(obj);
-//     }
-//     Parse.Object.saveAll(line, {
-//       success: function() {
-//         var query = new Parse.Query(TestObject);
-//         var point = new Parse.GeoPoint(24, 19);
-//         query.equalTo('construct', 'line');
-//         query.withinMiles('location', point, 10000);
-//         query.find({
-//           success: function(results) {
-//             equal(results.length, 10);
-//             equal(results[0].get('seq'), 9);
-//             equal(results[3].get('seq'), 6);
-//             done();
-//           }
-//         });
-//       }
-//     });
-//   });
+  it('geo line', (done) => {
+    var line = [];
+    for (var i = 0; i < 10; ++i) {
+      var obj = new TestObject();
+      var point = new Parse.GeoPoint(i * 4.0 - 12.0, i * 3.2 - 11.0);
+      obj.set('location', point);
+      obj.set('construct', 'line');
+      obj.set('seq', i);
+      line.push(obj);
+    }
+    Parse.Object.saveAll(line, {
+      success: function() {
+        var query = new Parse.Query(TestObject);
+        var point = new Parse.GeoPoint(24, 19);
+        query.equalTo('construct', 'line');
+        query.withinMiles('location', point, 10000);
+        query.find({
+          success: function(results) {
+            equal(results.length, 10);
+            equal(results[0].get('seq'), 9);
+            equal(results[3].get('seq'), 6);
+            done();
+          }
+        });
+      }
+    });
+  });
 
   it('geo max distance large', (done) => {
     var objects = [];
diff --git a/spec/ParseGlobalConfig.spec.js b/spec/ParseGlobalConfig.spec.js
index 399c9ee6..4b684553 100644
--- a/spec/ParseGlobalConfig.spec.js
+++ b/spec/ParseGlobalConfig.spec.js
@@ -5,21 +5,21 @@ var Parse = require('parse/node').Parse;
 let Config = require('../src/Config');
 
 describe('a GlobalConfig', () => {
-  beforeEach(function(done) {
+  beforeEach(done => {
     let config = new Config('test');
-    config.database.rawCollection('_GlobalConfig')
-      .then(coll => coll.updateOne({ '_id': 1}, { $set: { params: { companies: ['US', 'DK'] } } }, { upsert: true }))
-      .then(done());
+    config.database.adaptiveCollection('_GlobalConfig')
+      .then(coll => coll.upsertOne({ '_id': 1 }, { $set: { params: { companies: ['US', 'DK'] } } }))
+      .then(() => { done(); });
   });
 
   it('can be retrieved', (done) => {
     request.get({
-      url: 'http://localhost:8378/1/config',
-      json: true,
+      url    : 'http://localhost:8378/1/config',
+      json   : true,
       headers: {
         'X-Parse-Application-Id': 'test',
-        'X-Parse-Master-Key': 'test',
-      },
+        'X-Parse-Master-Key'    : 'test'
+      }
     }, (error, response, body) => {
       expect(response.statusCode).toEqual(200);
       expect(body.params.companies).toEqual(['US', 'DK']);
@@ -29,13 +29,13 @@ describe('a GlobalConfig', () => {
 
   it('can be updated when a master key exists', (done) => {
     request.put({
-      url: 'http://localhost:8378/1/config',
-      json: true,
-      body: { params: { companies: ['US', 'DK', 'SE'] } },
+      url    : 'http://localhost:8378/1/config',
+      json   : true,
+      body   : { params: { companies: ['US', 'DK', 'SE'] } },
       headers: {
         'X-Parse-Application-Id': 'test',
-        'X-Parse-Master-Key': 'test'
-      },
+        'X-Parse-Master-Key'    : 'test'
+      }
     }, (error, response, body) => {
       expect(response.statusCode).toEqual(200);
       expect(body.result).toEqual(true);
@@ -45,35 +45,35 @@ describe('a GlobalConfig', () => {
 
   it('fail to update if master key is missing', (done) => {
     request.put({
-      url: 'http://localhost:8378/1/config',
-      json: true,
-      body: { params: { companies: [] } },
+      url    : 'http://localhost:8378/1/config',
+      json   : true,
+      body   : { params: { companies: [] } },
       headers: {
         'X-Parse-Application-Id': 'test',
-        'X-Parse-REST-API-Key': 'rest'
-      },
+        'X-Parse-REST-API-Key'  : 'rest'
+      }
     }, (error, response, body) => {
       expect(response.statusCode).toEqual(403);
       expect(body.error).toEqual('unauthorized: master key is required');
       done();
     });
-  });  
+  });
 
   it('failed getting config when it is missing', (done) => {
     let config = new Config('test');
-    config.database.rawCollection('_GlobalConfig')
-      .then(coll => coll.deleteOne({ '_id': 1}, {}, {}))
-      .then(_ => {
+    config.database.adaptiveCollection('_GlobalConfig')
+      .then(coll => coll.deleteOne({ '_id': 1 }))
+      .then(() => {
         request.get({
-          url: 'http://localhost:8378/1/config',
-          json: true,
+          url    : 'http://localhost:8378/1/config',
+          json   : true,
           headers: {
             'X-Parse-Application-Id': 'test',
-            'X-Parse-Master-Key': 'test',
-          },
+            'X-Parse-Master-Key'    : 'test'
+          }
         }, (error, response, body) => {
-          expect(response.statusCode).toEqual(404);
-          expect(body.code).toEqual(Parse.Error.INVALID_KEY_NAME);
+          expect(response.statusCode).toEqual(200);
+          expect(body.params).toEqual({});
           done();
         });
       });
diff --git a/spec/ParseQuery.spec.js b/spec/ParseQuery.spec.js
index 9171d12c..2c5cb5d4 100644
--- a/spec/ParseQuery.spec.js
+++ b/spec/ParseQuery.spec.js
@@ -2,6 +2,9 @@
 // hungry/js/test/parse_query_test.js
 //
 // Some new tests are added.
+'use strict';
+
+const Parse = require('parse/node');
 
 describe('Parse.Query testing', () => {
   it("basic query", function(done) {
@@ -1574,6 +1577,29 @@ describe('Parse.Query testing', () => {
     });
   });
 
+  it("dontSelect query without conditions", function(done) {
+    const RestaurantObject = Parse.Object.extend("Restaurant");
+    const PersonObject = Parse.Object.extend("Person");
+    const objects = [
+      new RestaurantObject({ location: "Djibouti" }),
+      new RestaurantObject({ location: "Ouagadougou" }),
+      new PersonObject({ name: "Bob", hometown: "Djibouti" }),
+      new PersonObject({ name: "Tom", hometown: "Yoloblahblahblah" }),
+      new PersonObject({ name: "Billy", hometown: "Ouagadougou" })
+    ];
+
+    Parse.Object.saveAll(objects, function() {
+      const query = new Parse.Query(RestaurantObject);
+      const mainQuery = new Parse.Query(PersonObject);
+      mainQuery.doesNotMatchKeyInQuery("hometown", "location", query);
+      mainQuery.find().then(results => {
+        equal(results.length, 1);
+        equal(results[0].get('name'), 'Tom');
+        done();
+      });
+    });
+  });
+
   it("object with length", function(done) {
     var TestObject = Parse.Object.extend("TestObject");
     var obj = new TestObject();
@@ -2088,7 +2114,7 @@ describe('Parse.Query testing', () => {
       console.log(error);
     });
   });
-  
+
   // #371
   it('should properly interpret a query', (done) => {
     var query = new Parse.Query("C1");
@@ -2104,7 +2130,7 @@ describe('Parse.Query testing', () => {
       done();
     })
   });
-  
+
   it('should properly interpret a query', (done) => {
     var user = new Parse.User();
     user.set("username", "foo");
@@ -2112,22 +2138,22 @@ describe('Parse.Query testing', () => {
     return user.save().then( (user) => {
       var objIdQuery = new Parse.Query("_User").equalTo("objectId", user.id);
       var blockedUserQuery = user.relation("blockedUsers").query();
-      
+
       var aResponseQuery = new Parse.Query("MatchRelationshipActivityResponse");
       aResponseQuery.equalTo("userA", user);
       aResponseQuery.equalTo("userAResponse", 1);
-      
+
       var bResponseQuery = new Parse.Query("MatchRelationshipActivityResponse");
       bResponseQuery.equalTo("userB", user);
       bResponseQuery.equalTo("userBResponse", 1);
-      
+
       var matchOr = Parse.Query.or(aResponseQuery, bResponseQuery);
       var matchRelationshipA = new Parse.Query("_User");
       matchRelationshipA.matchesKeyInQuery("objectId", "userAObjectId", matchOr);
       var matchRelationshipB = new Parse.Query("_User");
       matchRelationshipB.matchesKeyInQuery("objectId", "userBObjectId", matchOr);
-      
-      
+
+
       var orQuery = Parse.Query.or(objIdQuery, blockedUserQuery, matchRelationshipA, matchRelationshipB);
       var query = new Parse.Query("_User");
       query.doesNotMatchQuery("objectId", orQuery);
@@ -2140,8 +2166,8 @@ describe('Parse.Query testing', () => {
       fail("should not fail");
       done();
     });
-    
-    
+
+
   });
-  
+
 });
diff --git a/spec/ParseRelation.spec.js b/spec/ParseRelation.spec.js
index e1416ecb..403628ed 100644
--- a/spec/ParseRelation.spec.js
+++ b/spec/ParseRelation.spec.js
@@ -329,6 +329,46 @@ describe('Parse.Relation testing', () => {
     });
   });
   
+  it("query on pointer and relation fields with equal bis", (done) => {
+    var ChildObject = Parse.Object.extend("ChildObject");
+    var childObjects = [];
+    for (var i = 0; i < 10; i++) {
+      childObjects.push(new ChildObject({x: i}));
+    }
+
+    Parse.Object.saveAll(childObjects).then(() => {
+        var ParentObject = Parse.Object.extend("ParentObject");
+        var parent = new ParentObject();
+        parent.set("x", 4);
+        var relation = parent.relation("toChilds");
+        relation.add(childObjects[0]);
+        relation.add(childObjects[1]);
+        relation.add(childObjects[2]);
+        
+        var parent2 = new ParentObject();
+        parent2.set("x", 3);
+        parent2.relation("toChilds").add(childObjects[2]);
+        
+        var parents = [];
+        parents.push(parent);
+        parents.push(parent2);
+        parents.push(new ParentObject());
+        
+       return Parse.Object.saveAll(parents).then(() => {
+          var query = new Parse.Query(ParentObject);
+          query.equalTo("objectId", parent2.id);
+          // childObjects[2] is in 2 relations
+          // before the fix, that woul yield 2 results
+          query.equalTo("toChilds", childObjects[2]);
+         
+          return query.find().then((list) => {
+            equal(list.length, 1, "There should be 1 result");
+            done();
+          });
+        });
+    });
+  });
+  
   it("or queries on pointer and relation fields", (done) => {
     var ChildObject = Parse.Object.extend("ChildObject");
     var childObjects = [];
diff --git a/spec/ParseRole.spec.js b/spec/ParseRole.spec.js
index 8b4f989f..f48fbf7f 100644
--- a/spec/ParseRole.spec.js
+++ b/spec/ParseRole.spec.js
@@ -1,4 +1,4 @@
-
+"use strict";
 
 // Roles are not accessible without the master key, so they are not intended
 // for use by clients.  We can manually test them using the master key.
@@ -64,26 +64,30 @@ describe('Parse Role testing', () => {
 
     var rolesNames = ["FooRole", "BarRole", "BazRole"];
 
-    var createRole = function(name, parent, user) {
+    var createRole = function(name, sibling, user) {
       var role = new Parse.Role(name, new Parse.ACL());
       if (user) {
         var users = role.relation('users');
         users.add(user);
       }
-      if (parent) {
-        role.relation('roles').add(parent);
+      if (sibling) {
+        role.relation('roles').add(sibling);
       }
       return role.save({}, { useMasterKey: true });
     }
     var roleIds = {};
      createTestUser().then( (user) => {
-
-       return createRole(rolesNames[0], null, null).then( (aRole) => {
+       // Put the user on the 1st role
+       return createRole(rolesNames[0], null, user).then( (aRole) => {
          roleIds[aRole.get("name")] = aRole.id;
+         // set the 1st role as a sibling of the second
+         // user will should have 2 role now
           return createRole(rolesNames[1], aRole, null);
        }).then( (anotherRole) => {
          roleIds[anotherRole.get("name")] = anotherRole.id;
-         return createRole(rolesNames[2], anotherRole, user);
+         // set this role as a sibling of the last
+         // the user should now have 3 roles
+         return createRole(rolesNames[2], anotherRole, null);
        }).then( (lastRole) => {
          roleIds[lastRole.get("name")] = lastRole.id;
          var auth = new Auth({ config: new Config("test"), isMaster: true, user: user });
@@ -118,6 +122,159 @@ describe('Parse Role testing', () => {
       });
     });
   });
+  
+  it("Should properly resolve roles", (done) => {
+    let admin = new Parse.Role("Admin", new Parse.ACL());
+    let moderator = new Parse.Role("Moderator", new Parse.ACL());
+    let superModerator = new Parse.Role("SuperModerator", new Parse.ACL());
+    let contentManager = new Parse.Role('ContentManager', new Parse.ACL());
+    let superContentManager = new Parse.Role('SuperContentManager', new Parse.ACL());
+    Parse.Object.saveAll([admin, moderator, contentManager, superModerator, superContentManager], {useMasterKey: true}).then(() => {
+      contentManager.getRoles().add([moderator, superContentManager]);
+      moderator.getRoles().add([admin, superModerator]);
+      superContentManager.getRoles().add(superModerator);
+      return Parse.Object.saveAll([admin, moderator, contentManager, superModerator, superContentManager], {useMasterKey: true});
+    }).then(() => { 
+      var auth = new Auth({ config: new Config("test"), isMaster: true });
+      // For each role, fetch their sibling, what they inherit
+      // return with result and roleId for later comparison
+      let promises = [admin, moderator, contentManager, superModerator].map((role) => {
+        return auth._getAllRoleNamesForId(role.id).then((result) => {
+          return Parse.Promise.as({
+            id: role.id,
+            name: role.get('name'),
+            roleIds: result
+          });
+        })
+      });
+      
+      return Parse.Promise.when(promises);
+    }).then((results) => {
+      results.forEach((result) => {
+        let id = result.id;
+        let roleIds = result.roleIds;
+        if (id == admin.id) {
+          expect(roleIds.length).toBe(2);
+          expect(roleIds.indexOf(moderator.id)).not.toBe(-1);
+          expect(roleIds.indexOf(contentManager.id)).not.toBe(-1);
+        } else if (id == moderator.id) {
+          expect(roleIds.length).toBe(1);
+          expect(roleIds.indexOf(contentManager.id)).toBe(0);
+        } else if (id == contentManager.id) {
+          expect(roleIds.length).toBe(0);
+        } else if (id == superModerator.id) {
+          expect(roleIds.length).toBe(3);
+          expect(roleIds.indexOf(moderator.id)).not.toBe(-1);
+          expect(roleIds.indexOf(contentManager.id)).not.toBe(-1);
+          expect(roleIds.indexOf(superContentManager.id)).not.toBe(-1);
+        }
+      });
+      done();
+    }).fail((err) => {
+      console.error(err);
+      done();
+    })
+    
+  });
+
+  it('can create role and query empty users', (done)=> {
+    var roleACL = new Parse.ACL();
+    roleACL.setPublicReadAccess(true);
+    var role = new Parse.Role('subscribers', roleACL);
+    role.save({}, {useMasterKey : true})
+      .then((x)=>{
+        var query = role.relation('users').query();
+        query.find({useMasterKey : true})
+          .then((users)=>{
+            done();
+          }, (e)=>{
+            fail('should not have errors');
+            done();
+          });
+      }, (e) => {
+        console.log(e);
+        fail('should not have errored');
+      });
+  });
+
+  // Based on various scenarios described in issues #827 and #683,
+  it('should properly handle role permissions on objects', (done) => {
+    var user, user2, user3;
+    var role, role2, role3;
+    var obj, obj2;
+
+    var prACL = new Parse.ACL();
+    prACL.setPublicReadAccess(true);
+    var adminACL, superACL, customerACL;
+
+    createTestUser().then((x) => {
+      user = x;
+      user2 = new Parse.User();
+      return user2.save({ username: 'user2', password: 'omgbbq' });
+    }).then((x) => {
+      user3 = new Parse.User();
+      return user3.save({ username: 'user3', password: 'omgbbq' });
+    }).then((x) => {
+      role = new Parse.Role('Admin', prACL);
+      role.getUsers().add(user);
+      return role.save({}, { useMasterKey: true });
+    }).then(() => {
+      adminACL = new Parse.ACL();
+      adminACL.setRoleReadAccess("Admin", true);
+      adminACL.setRoleWriteAccess("Admin", true);
+
+      role2 = new Parse.Role('Super', prACL);
+      role2.getUsers().add(user2);
+      return role2.save({}, { useMasterKey: true });
+    }).then(() => {
+      superACL = new Parse.ACL();
+      superACL.setRoleReadAccess("Super", true);
+      superACL.setRoleWriteAccess("Super", true);
+
+      role.getRoles().add(role2);
+      return role.save({}, { useMasterKey: true });
+    }).then(() => {
+      role3 = new Parse.Role('Customer', prACL);
+      role3.getUsers().add(user3);
+      role3.getRoles().add(role);
+      return role3.save({}, { useMasterKey: true });
+    }).then(() => {
+      customerACL = new Parse.ACL();
+      customerACL.setRoleReadAccess("Customer", true);
+      customerACL.setRoleWriteAccess("Customer", true);
+
+      var query = new Parse.Query('_Role');
+      return query.find({ useMasterKey: true });
+    }).then((x) => {
+      expect(x.length).toEqual(3);
+
+      obj = new Parse.Object('TestObjectRoles');
+      obj.set('ACL', customerACL);
+      return obj.save(null, { useMasterKey: true });
+    }).then(() => {
+      // Above, the Admin role was added to the Customer role.
+      // An object secured by the Customer ACL should be able to be edited by the Admin user.
+      obj.set('changedByAdmin', true);
+      return obj.save(null, { sessionToken: user.getSessionToken() });
+    }).then(() => {
+      obj2 = new Parse.Object('TestObjectRoles');
+      obj2.set('ACL', adminACL);
+      return obj2.save(null, { useMasterKey: true });
+    }, (e) => {
+      fail('Admin user should have been able to save.');
+      done();
+    }).then(() => {
+      // An object secured by the Admin ACL should not be able to be edited by a Customer role user.
+      obj2.set('changedByCustomer', true);
+      return obj2.save(null, { sessionToken: user3.getSessionToken() });
+    }).then(() => {
+      fail('Customer user should not have been able to save.');
+      done();
+    }, (e) => {
+      expect(e.code).toEqual(101);
+      done();
+    })
+  });
 
 });
 
diff --git a/spec/PushController.spec.js b/spec/PushController.spec.js
index 1821d1a3..e2ced56f 100644
--- a/spec/PushController.spec.js
+++ b/spec/PushController.spec.js
@@ -3,31 +3,6 @@ var PushController = require('../src/Controllers/PushController').PushController
 var Config = require('../src/Config');
 
 describe('PushController', () => {
-  it('can check valid master key of request', (done) => {
-    // Make mock request
-    var auth = {
-      isMaster: true
-    }
-
-    expect(() => {
-      PushController.validateMasterKey(auth);
-    }).not.toThrow();
-    done();
-  });
-
-  it('can check invalid master key of request', (done) => {
-    // Make mock request
-    var auth = {
-      isMaster: false
-    }
-
-    expect(() => {
-      PushController.validateMasterKey(auth);
-    }).toThrow();
-    done();
-  });
-
-
   it('can validate device type when no device type is set', (done) => {
     // Make query condition
     var where = {
@@ -132,10 +107,10 @@ describe('PushController', () => {
   
   it('properly increment badges', (done) => {
     
-   var payload = {
+   var payload = {data:{
      alert: "Hello World!",
      badge: "Increment",
-   }
+   }}
    var installations = [];
    while(installations.length != 10) {
      var installation = new Parse.Object("_Installation");
@@ -157,7 +132,7 @@ describe('PushController', () => {
    
    var pushAdapter = {
     send: function(body, installations) {
-      var badge = body.badge;
+      var badge = body.data.badge;
       installations.forEach((installation) => {
         if (installation.deviceType == "ios") {
           expect(installation.badge).toEqual(badge);
@@ -196,10 +171,10 @@ describe('PushController', () => {
   
   it('properly set badges to 1', (done) => {
     
-   var payload = {
+   var payload = {data: {
      alert: "Hello World!",
      badge: 1,
-   }
+   }}
    var installations = [];
    while(installations.length != 10) {
      var installation = new Parse.Object("_Installation");
@@ -213,7 +188,7 @@ describe('PushController', () => {
    
    var pushAdapter = {
     send: function(body, installations) {
-      var badge = body.badge;
+      var badge = body.data.badge;
       installations.forEach((installation) => {
         expect(installation.badge).toEqual(badge);
         expect(1).toEqual(installation.badge);
@@ -244,6 +219,6 @@ describe('PushController', () => {
      done();
    });
    
-  })
+  });
 
 });
diff --git a/spec/PushRouter.spec.js b/spec/PushRouter.spec.js
index e7273dd5..d71f9f5c 100644
--- a/spec/PushRouter.spec.js
+++ b/spec/PushRouter.spec.js
@@ -2,40 +2,6 @@ var PushRouter = require('../src/Routers/PushRouter').PushRouter;
 var request = require('request');
 
 describe('PushRouter', () => {
-    it('can check valid master key of request', (done) => {
-    // Make mock request
-    var request = {
-      info: {
-        masterKey: 'masterKey'
-      },
-      config: {
-        masterKey: 'masterKey'
-      }
-    }
-
-    expect(() => {
-      PushRouter.validateMasterKey(request);
-    }).not.toThrow();
-    done();
-  });
-
-  it('can check invalid master key of request', (done) => {
-    // Make mock request
-    var request = {
-      info: {
-        masterKey: 'masterKey'
-      },
-      config: {
-        masterKey: 'masterKeyAgain'
-      }
-    }
-
-    expect(() => {
-      PushRouter.validateMasterKey(request);
-    }).toThrow();
-    done();
-  });
-
   it('can get query condition when channels is set', (done) => {
     // Make mock request
     var request = {
diff --git a/spec/RestCreate.spec.js b/spec/RestCreate.spec.js
index cddfd598..f9b94b37 100644
--- a/spec/RestCreate.spec.js
+++ b/spec/RestCreate.spec.js
@@ -175,17 +175,26 @@ describe('rest create', () => {
         }
       }
     };
+    var newUserSignedUpByFacebookObjectId;
     rest.create(config, auth.nobody(config), '_User', data)
       .then((r) => {
         expect(typeof r.response.objectId).toEqual('string');
         expect(typeof r.response.createdAt).toEqual('string');
         expect(typeof r.response.sessionToken).toEqual('string');
+        newUserSignedUpByFacebookObjectId = r.response.objectId;
         return rest.create(config, auth.nobody(config), '_User', data);
       }).then((r) => {
         expect(typeof r.response.objectId).toEqual('string');
         expect(typeof r.response.createdAt).toEqual('string');
         expect(typeof r.response.username).toEqual('string');
         expect(typeof r.response.updatedAt).toEqual('string');
+        expect(r.response.objectId).toEqual(newUserSignedUpByFacebookObjectId);
+        return rest.find(config, auth.master(config),
+                          '_Session', {sessionToken: r.response.sessionToken});
+      }).then((response) => {
+        expect(response.results.length).toEqual(1);
+        var output = response.results[0];
+        expect(output.user.objectId).toEqual(newUserSignedUpByFacebookObjectId);
         done();
       });
   });
diff --git a/spec/Schema.spec.js b/spec/Schema.spec.js
index 62ce711e..2912067f 100644
--- a/spec/Schema.spec.js
+++ b/spec/Schema.spec.js
@@ -577,6 +577,38 @@ describe('Schema', () => {
       });
   });
 
+  it('can delete relation field when related _Join collection not exist', done => {
+    config.database.loadSchema()
+    .then(schema => {
+      schema.addClassIfNotExists('NewClass', {
+        relationField: {type: 'Relation', targetClass: '_User'}
+      })
+      .then(mongoObj => {
+        expect(mongoObj).toEqual({
+          _id: 'NewClass',
+          objectId: 'string',
+          updatedAt: 'string',
+          createdAt: 'string',
+          relationField: 'relation<_User>',
+        });
+      })
+      .then(() => config.database.collectionExists('_Join:relationField:NewClass'))
+      .then(exist => {
+        expect(exist).toEqual(false);
+      })
+      .then(() => schema.deleteField('relationField', 'NewClass', config.database))
+      .then(() => schema.reloadData())
+      .then(() => {
+        expect(schema['data']['NewClass']).toEqual({
+          objectId: 'string',
+          updatedAt: 'string',
+          createdAt: 'string'
+        });
+        done();
+      });
+    });
+  });
+
   it('can delete string fields and resave as number field', done => {
     Parse.Object.disableSingleInstance();
     var obj1 = hasAllPODobject();
@@ -671,4 +703,33 @@ describe('Schema', () => {
     });
     done();
   });
+
+  it('handles legacy _client_permissions keys without crashing', done => {
+    Schema.mongoSchemaToSchemaAPIResponse({
+      "_id":"_Installation",
+      "_client_permissions":{
+        "get":true,
+        "find":true,
+        "update":true,
+        "create":true,
+        "delete":true,
+      },
+      "_metadata":{
+        "class_permissions":{
+          "get":{"*":true},
+          "find":{"*":true},
+          "update":{"*":true},
+          "create":{"*":true},
+          "delete":{"*":true},
+          "addField":{"*":true},
+        }
+      },
+      "installationId":"string",
+      "deviceToken":"string",
+      "deviceType":"string",
+      "channels":"array",
+      "user":"*_User",
+    });
+    done();
+  });
 });
diff --git a/src/Adapters/AdapterLoader.js b/src/Adapters/AdapterLoader.js
index 5b46f22d..654948e9 100644
--- a/src/Adapters/AdapterLoader.js
+++ b/src/Adapters/AdapterLoader.js
@@ -1,6 +1,5 @@
 export function loadAdapter(adapter, defaultAdapter, options) {
-
-  if (!adapter)  
+  if (!adapter)
   {
     if (!defaultAdapter) {
       return options;
@@ -20,7 +19,7 @@ export function loadAdapter(adapter, defaultAdapter, options) {
     if (adapter.default) {
       adapter = adapter.default;
     }
-    
+
     return loadAdapter(adapter, undefined, options);
   } else if (adapter.module) {
     return loadAdapter(adapter.module, undefined, adapter.options);
@@ -28,16 +27,9 @@ export function loadAdapter(adapter, defaultAdapter, options) {
     return loadAdapter(adapter.class, undefined, adapter.options);
   } else if (adapter.adapter) {
     return loadAdapter(adapter.adapter, undefined, adapter.options);
-  } else {
-    // Try to load the defaultAdapter with the options
-    // The default adapter should throw if the options are
-    // incompatible
-    try {
-      return loadAdapter(defaultAdapter, undefined, adapter);
-    } catch (e) {};
   }
-  // return the adapter as is as it's unusable otherwise
-  return adapter;     
+  // return the adapter as provided
+  return adapter;
 }
 
 export default loadAdapter;
diff --git a/src/Adapters/Files/GCSAdapter.js b/src/Adapters/Files/GCSAdapter.js
new file mode 100644
index 00000000..8fb34af8
--- /dev/null
+++ b/src/Adapters/Files/GCSAdapter.js
@@ -0,0 +1,125 @@
+// GCSAdapter
+// Store Parse Files in Google Cloud Storage: https://cloud.google.com/storage
+import { storage } from 'gcloud';
+import { FilesAdapter } from './FilesAdapter';
+import requiredParameter from '../../requiredParameter';
+
+function requiredOrFromEnvironment(env, name) {
+  let environmentVariable = process.env[env];
+  if (!environmentVariable) {
+    requiredParameter(`GCSAdapter requires an ${name}`);
+  }
+  return environmentVariable;
+}
+
+function fromEnvironmentOrDefault(env, defaultValue) {
+  let environmentVariable = process.env[env];
+  if (environmentVariable) {
+    return environmentVariable;
+  }
+  return defaultValue;
+}
+
+export class GCSAdapter extends FilesAdapter {
+  // GCS Project ID and the name of a corresponding Keyfile are required.
+  // Unlike the S3 adapter, you must create a new Cloud Storage bucket, as this is not created automatically.
+  // See https://googlecloudplatform.github.io/gcloud-node/#/docs/master/guides/authentication
+  // for more details.
+  constructor(
+    projectId = requiredOrFromEnvironment('GCP_PROJECT_ID', 'projectId'),
+    keyFilename = requiredOrFromEnvironment('GCP_KEYFILE_PATH', 'keyfile path'),
+    bucket = requiredOrFromEnvironment('GCS_BUCKET', 'bucket name'),
+    { bucketPrefix = fromEnvironmentOrDefault('GCS_BUCKET_PREFIX', ''),
+      directAccess = fromEnvironmentOrDefault('GCS_DIRECT_ACCESS', false) } = {}) {
+    super();
+
+    this._bucket = bucket;
+    this._bucketPrefix = bucketPrefix;
+    this._directAccess = directAccess;
+
+    let options = {
+      projectId: projectId,
+      keyFilename: keyFilename
+    };
+
+    this._gcsClient = new storage(options);
+  }
+
+  // For a given config object, filename, and data, store a file in GCS.
+  // Resolves the promise or fails with an error.
+  createFile(config, filename, data, contentType) {
+    let params = {
+      contentType: contentType || 'application/octet-stream'
+    };
+
+    return new Promise((resolve, reject) => {
+      let file = this._gcsClient.bucket(this._bucket).file(this._bucketPrefix + filename);
+      // gcloud supports upload(file) not upload(bytes), so we need to stream.
+      var uploadStream = file.createWriteStream(params);
+      uploadStream.on('error', (err) => {
+        return reject(err);
+      }).on('finish', () => {
+        // Second call to set public read ACL after object is uploaded.
+        if (this._directAccess) {
+          file.makePublic((err, res) => {
+            if (err !== null) {
+              return reject(err);
+            }
+            resolve();
+          });
+        } else {
+          resolve();
+        }
+      });
+      uploadStream.write(data);
+      uploadStream.end();
+    });
+  }
+
+  // Deletes a file with the given file name.
+  // Returns a promise that succeeds with the delete response, or fails with an error.
+  deleteFile(config, filename) {
+    return new Promise((resolve, reject) => {
+      let file = this._gcsClient.bucket(this._bucket).file(this._bucketPrefix + filename);
+      file.delete((err, res) => {
+        if(err !== null) {
+          return reject(err);
+        }
+        resolve(res);
+      });
+    });
+  }
+
+  // Search for and return a file if found by filename.
+  // Returns a promise that succeeds with the buffer result from GCS, or fails with an error.
+  getFileData(config, filename) {
+    return new Promise((resolve, reject) => {
+      let file = this._gcsClient.bucket(this._bucket).file(this._bucketPrefix + filename);
+      // Check for existence, since gcloud-node seemed to be caching the result
+      file.exists((err, exists) => {
+        if (exists) {
+          file.download((err, data) => {
+            if (err !== null) {
+              return reject(err);
+            }
+            return resolve(data);
+          });
+        } else {
+          reject(err);
+        }
+      });
+    });
+  }
+
+  // Generates and returns the location of a file stored in GCS for the given request and filename.
+  // The location is the direct GCS link if the option is set,
+  // otherwise we serve the file through parse-server.
+  getFileLocation(config, filename) {
+    if (this._directAccess) {
+      return `https://${this._bucket}.storage.googleapis.com/${this._bucketPrefix + filename}`;
+    }
+    return (config.mount + '/files/' + config.applicationId + '/' + encodeURIComponent(filename));
+  }
+}
+
+export default GCSAdapter;
diff --git a/src/Adapters/Files/S3Adapter.js b/src/Adapters/Files/S3Adapter.js
index e21ef8db..cbdf3f11 100644
--- a/src/Adapters/Files/S3Adapter.js
+++ b/src/Adapters/Files/S3Adapter.js
@@ -8,19 +8,20 @@ import requiredParameter from '../../requiredParameter';
 
 const DEFAULT_S3_REGION = "us-east-1";
 
-function parseS3AdapterOptions(...options) {
-  if (options.length === 1 && typeof options[0] == "object") {
-    return options;
+function requiredOrFromEnvironment(env, name) {
+  let environmentVariable = process.env[env];
+  if (!environmentVariable) {
+    requiredParameter(`S3Adapter requires an ${name}`);
   }
-  
-  const additionalOptions = options[3] || {};
-  
-  return {
-    accessKey: options[0],
-    secretKey: options[1],
-    bucket: options[2],
-    region: additionalOptions.region
+  return environmentVariable;
+}
+
+function fromEnvironmentOrDefault(env, defaultValue) {
+  let environmentVariable = process.env[env];
+  if (environmentVariable) {
+    return environmentVariable;
   }
+  return defaultValue;
 }
 
 export class S3Adapter extends FilesAdapter {
@@ -28,12 +29,12 @@ export class S3Adapter extends FilesAdapter {
   // Providing AWS access and secret keys is mandatory
   // Region and bucket will use sane defaults if omitted
   constructor(
-     accessKey = requiredParameter('S3Adapter requires an accessKey'),
-     secretKey = requiredParameter('S3Adapter requires a secretKey'),
-     bucket,
-     { region = DEFAULT_S3_REGION,
-       bucketPrefix = '',
-       directAccess = false } = {}) {
+     accessKey = requiredOrFromEnvironment('S3_ACCESS_KEY', 'accessKey'),
+     secretKey = requiredOrFromEnvironment('S3_SECRET_KEY', 'secretKey'),
+     bucket = fromEnvironmentOrDefault('S3_BUCKET', undefined),
+     { region = fromEnvironmentOrDefault('S3_REGION', DEFAULT_S3_REGION),
+       bucketPrefix = fromEnvironmentOrDefault('S3_BUCKET_PREFIX', ''),
+       directAccess =  fromEnvironmentOrDefault('S3_DIRECT_ACCESS', false) } = {}) {
     super();
     
     this._region = region;
diff --git a/src/Adapters/Storage/Mongo/MongoCollection.js b/src/Adapters/Storage/Mongo/MongoCollection.js
index 66113c3d..12c9df66 100644
--- a/src/Adapters/Storage/Mongo/MongoCollection.js
+++ b/src/Adapters/Storage/Mongo/MongoCollection.js
@@ -1,4 +1,3 @@
-
 let mongodb = require('mongodb');
 let Collection = mongodb.Collection;
 
@@ -18,8 +17,7 @@ export default class MongoCollection {
     return this._rawFind(query, { skip, limit, sort })
       .catch(error => {
         // Check for "no geoindex" error
-        if (error.code != 17007 ||
-          !error.message.match(/unable to find index for .geoNear/)) {
+        if (error.code != 17007 || !error.message.match(/unable to find index for .geoNear/)) {
           throw error;
         }
         // Figure out what key needs an index
@@ -56,18 +54,34 @@ export default class MongoCollection {
     return this._mongoCollection.findAndModify(query, [], update, { new: true }).then(document => {
       // Value is the object where mongo returns multiple fields.
       return document.value;
-    })
+    });
   }
 
-  // Atomically find and delete an object based on query.
-  // The result is the promise with an object that was in the database before deleting.
-  // Postgres Note: Translates directly to `DELETE * FROM ... RETURNING *`, which will return data after delete is done.
-  findOneAndDelete(query) {
-    // arguments: query, sort
-    return this._mongoCollection.findAndRemove(query, []).then(document => {
-      // Value is the object where mongo returns multiple fields.
-      return document.value;
-    });
+  insertOne(object) {
+    return this._mongoCollection.insertOne(object);
+  }
+
+  // Atomically updates data in the database for a single (first) object that matched the query
+  // If there is nothing that matches the query - does insert
+  // Postgres Note: `INSERT ... ON CONFLICT UPDATE` that is available since 9.5.
+  upsertOne(query, update) {
+    return this._mongoCollection.update(query, update, { upsert: true });
+  }
+
+  updateOne(query, update) {
+    return this._mongoCollection.updateOne(query, update);
+  }
+
+  updateMany(query, update) {
+    return this._mongoCollection.updateMany(query, update);
+  }
+
+  deleteOne(query) {
+    return this._mongoCollection.deleteOne(query);
+  }
+
+  deleteMany(query) {
+    return this._mongoCollection.deleteMany(query);
   }
 
   drop() {
diff --git a/src/Adapters/Storage/Mongo/MongoSchemaCollection.js b/src/Adapters/Storage/Mongo/MongoSchemaCollection.js
new file mode 100644
index 00000000..992068b5
--- /dev/null
+++ b/src/Adapters/Storage/Mongo/MongoSchemaCollection.js
@@ -0,0 +1,58 @@
+
+import MongoCollection from './MongoCollection';
+
+function _mongoSchemaQueryFromNameQuery(name: string, query) {
+  return _mongoSchemaObjectFromNameFields(name, query);
+}
+
+function _mongoSchemaObjectFromNameFields(name: string, fields) {
+  let object = { _id: name };
+  if (fields) {
+    Object.keys(fields).forEach(key => {
+      object[key] = fields[key];
+    });
+  }
+  return object;
+}
+
+export default class MongoSchemaCollection {
+  _collection: MongoCollection;
+
+  constructor(collection: MongoCollection) {
+    this._collection = collection;
+  }
+
+  getAllSchemas() {
+    return this._collection._rawFind({});
+  }
+
+  findSchema(name: string) {
+    return this._collection._rawFind(_mongoSchemaQueryFromNameQuery(name), { limit: 1 }).then(results => {
+      return results[0];
+    });
+  }
+
+  // Atomically find and delete an object based on query.
+  // The result is the promise with an object that was in the database before deleting.
+  // Postgres Note: Translates directly to `DELETE * FROM ... RETURNING *`, which will return data after delete is done.
+  findAndDeleteSchema(name: string) {
+    // arguments: query, sort
+    return this._collection._mongoCollection.findAndRemove(_mongoSchemaQueryFromNameQuery(name), []).then(document => {
+      // Value is the object where mongo returns multiple fields.
+      return document.value;
+    });
+  }
+
+  addSchema(name: string, fields) {
+    let mongoObject = _mongoSchemaObjectFromNameFields(name, fields);
+    return this._collection.insertOne(mongoObject);
+  }
+
+  updateSchema(name: string, update) {
+    return this._collection.updateOne(_mongoSchemaQueryFromNameQuery(name), update);
+  }
+
+  upsertSchema(name: string, query: string, update) {
+    return this._collection.upsertOne(_mongoSchemaQueryFromNameQuery(name, query), update);
+  }
+}
diff --git a/src/Adapters/Storage/Mongo/MongoStorageAdapter.js b/src/Adapters/Storage/Mongo/MongoStorageAdapter.js
index 201388b2..e3d59493 100644
--- a/src/Adapters/Storage/Mongo/MongoStorageAdapter.js
+++ b/src/Adapters/Storage/Mongo/MongoStorageAdapter.js
@@ -1,9 +1,12 @@
 
 import MongoCollection from './MongoCollection';
+import MongoSchemaCollection from './MongoSchemaCollection';
 
 let mongodb = require('mongodb');
 let MongoClient = mongodb.MongoClient;
 
+const MongoSchemaCollectionName = '_SCHEMA';
+
 export class MongoStorageAdapter {
   // Private
   _uri: string;
@@ -38,6 +41,12 @@ export class MongoStorageAdapter {
       .then(rawCollection => new MongoCollection(rawCollection));
   }
 
+  schemaCollection(collectionPrefix: string) {
+    return this.connect()
+      .then(() => this.adaptiveCollection(collectionPrefix + MongoSchemaCollectionName))
+      .then(collection => new MongoSchemaCollection(collection));
+  }
+
   collectionExists(name: string) {
     return this.connect().then(() => {
       return this.database.listCollections({ name: name }).toArray();
diff --git a/src/Auth.js b/src/Auth.js
index 0b285789..b45f93f3 100644
--- a/src/Auth.js
+++ b/src/Auth.js
@@ -139,18 +139,18 @@ Auth.prototype._loadRoles = function() {
 };
 
 // Given a role object id, get any other roles it is part of
-// TODO: Make recursive to support role nesting beyond 1 level deep
 Auth.prototype._getAllRoleNamesForId = function(roleID) {
+  
+  // As per documentation, a Role inherits AnotherRole
+  // if this Role is in the roles pointer of this AnotherRole
+  // Let's find all the roles where this role is in a roles relation
   var rolePointer = {
     __type: 'Pointer',
     className: '_Role',
     objectId: roleID
   };
   var restWhere = {
-    '$relatedTo': {
-      key: 'roles',
-      object: rolePointer
-    }
+    'roles': rolePointer
   };
   var query = new RestQuery(this.config, master(this.config), '_Role',
                             restWhere, {});
@@ -161,6 +161,10 @@ Auth.prototype._getAllRoleNamesForId = function(roleID) {
     }
     var roleIDs = results.map(r => r.objectId);
     
+    // we found a list of roles where the roleID
+    // is referenced in the roles relation,
+    // Get the roles where those found roles are also
+    // referenced the same way
     var parentRolesPromises = roleIDs.map( (roleId) => {
       return this._getAllRoleNamesForId(roleId);
     });
@@ -169,14 +173,9 @@ Auth.prototype._getAllRoleNamesForId = function(roleID) {
   }).then(function(results){
     // Flatten
     let roleIDs = results.reduce( (memo, result) => {
-      if (typeof result == "object") {
-        memo = memo.concat(result);
-      } else {
-        memo.push(result);
-      }
-      return memo;
+      return memo.concat(result);
     }, []);
-    return Promise.resolve(roleIDs);
+    return Promise.resolve([...new Set(roleIDs)]);
   });
 };
 
diff --git a/src/Controllers/AdaptableController.js b/src/Controllers/AdaptableController.js
index ab7d7156..7ff8ce29 100644
--- a/src/Controllers/AdaptableController.js
+++ b/src/Controllers/AdaptableController.js
@@ -2,7 +2,7 @@
 AdaptableController.js
 
 AdaptableController is the base class for all controllers
-that support adapter, 
+that support adapter,
 The super class takes care of creating the right instance for the adapter
 based on the parameters passed
 
@@ -28,30 +28,30 @@ export class AdaptableController {
     this.validateAdapter(adapter);
     this[_adapter] = adapter;
   }
-  
+
   get adapter() {
     return this[_adapter];
   }
-  
+
   get config() {
     return new Config(this.appId);
   }
-  
+
   expectedAdapterType() {
     throw new Error("Subclasses should implement expectedAdapterType()");
   }
-  
+
   validateAdapter(adapter) {
     if (!adapter) {
       throw new Error(this.constructor.name+" requires an adapter");
     }
-    
+
     let Type = this.expectedAdapterType();
     // Allow skipping for testing
-    if (!Type) { 
+    if (!Type) {
       return;
     }
-    
+
     // Makes sure the prototype matches
     let mismatches = Object.getOwnPropertyNames(Type.prototype).reduce( (obj, key) => {
        const adapterType = typeof adapter[key];
@@ -64,7 +64,7 @@ export class AdaptableController {
        }
        return obj;
     }, {});
-   
+
     if (Object.keys(mismatches).length > 0) {
       throw new Error("Adapter prototype don't match expected prototype", adapter, mismatches);
     }
diff --git a/src/Controllers/DatabaseController.js b/src/Controllers/DatabaseController.js
index 683b9be0..d5752088 100644
--- a/src/Controllers/DatabaseController.js
+++ b/src/Controllers/DatabaseController.js
@@ -6,6 +6,7 @@ var Parse = require('parse/node').Parse;
 
 var Schema = require('./../Schema');
 var transform = require('./../transform');
+const deepcopy = require('deepcopy');
 
 // options can contain:
 //   collectionPrefix: the string to put in front of every collection name.
@@ -28,26 +29,16 @@ DatabaseController.prototype.connect = function() {
   return this.adapter.connect();
 };
 
-// Returns a promise for a Mongo collection.
-// Generally just for internal use.
-DatabaseController.prototype.collection = function(className) {
-  if (!Schema.classNameIsValid(className)) {
-    throw new Parse.Error(Parse.Error.INVALID_CLASS_NAME,
-                          'invalid className: ' + className);
-  }
-  return this.rawCollection(className);
-};
-
 DatabaseController.prototype.adaptiveCollection = function(className) {
   return this.adapter.adaptiveCollection(this.collectionPrefix + className);
 };
 
-DatabaseController.prototype.collectionExists = function(className) {
-  return this.adapter.collectionExists(this.collectionPrefix + className);
+DatabaseController.prototype.schemaCollection = function() {
+  return this.adapter.schemaCollection(this.collectionPrefix);
 };
 
-DatabaseController.prototype.rawCollection = function(className) {
-  return this.adapter.collection(this.collectionPrefix + className);
+DatabaseController.prototype.collectionExists = function(className) {
+  return this.adapter.collectionExists(this.collectionPrefix + className);
 };
 
 DatabaseController.prototype.dropCollection = function(className) {
@@ -58,15 +49,23 @@ function returnsTrue() {
   return true;
 }
 
+DatabaseController.prototype.validateClassName = function(className) {
+  if (!Schema.classNameIsValid(className)) {
+    const error = new Parse.Error(Parse.Error.INVALID_CLASS_NAME, 'invalid className: ' + className);
+    return Promise.reject(error);
+  }
+  return Promise.resolve();
+};
+
 // Returns a promise for a schema object.
 // If we are provided a acceptor, then we run it on the schema.
 // If the schema isn't accepted, we reload it at most once.
 DatabaseController.prototype.loadSchema = function(acceptor = returnsTrue) {
 
   if (!this.schemaPromise) {
-    this.schemaPromise = this.collection('_SCHEMA').then((coll) => {
+    this.schemaPromise = this.schemaCollection().then(collection => {
       delete this.schemaPromise;
-      return Schema.load(coll);
+      return Schema.load(collection);
     });
     return this.schemaPromise;
   }
@@ -75,9 +74,9 @@ DatabaseController.prototype.loadSchema = function(acceptor = returnsTrue) {
     if (acceptor(schema)) {
       return schema;
     }
-    this.schemaPromise = this.collection('_SCHEMA').then((coll) => {
+    this.schemaPromise = this.schemaCollection().then(collection => {
       delete this.schemaPromise;
-      return Schema.load(coll);
+      return Schema.load(collection);
     });
     return this.schemaPromise;
   });
@@ -89,7 +88,7 @@ DatabaseController.prototype.loadSchema = function(acceptor = returnsTrue) {
 DatabaseController.prototype.redirectClassNameForKey = function(className, key) {
   return this.loadSchema().then((schema) => {
     var t = schema.getExpectedType(className, key);
-    var match = t.match(/^relation<(.*)>$/);
+    var match = t ? t.match(/^relation<(.*)>$/) : false;
     if (match) {
       return match[1];
     } else {
@@ -136,6 +135,9 @@ DatabaseController.prototype.untransformObject = function(
 //         one of the provided strings must provide the caller with
 //         write permissions.
 DatabaseController.prototype.update = function(className, query, update, options) {
+  // Make a copy of the object, so we don't mutate the incoming data.
+  update = deepcopy(update);
+
   var acceptor = function(schema) {
     return schema.hasKeys(className, Object.keys(query));
   };
@@ -234,30 +236,28 @@ DatabaseController.prototype.handleRelationUpdates = function(className,
 
 // Adds a relation.
 // Returns a promise that resolves successfully iff the add was successful.
-DatabaseController.prototype.addRelation = function(key, fromClassName,
-                                               fromId, toId) {
-  var doc = {
+DatabaseController.prototype.addRelation = function(key, fromClassName, fromId, toId) {
+  let doc = {
     relatedId: toId,
-    owningId: fromId
+    owningId : fromId
   };
-  var className = '_Join:' + key + ':' + fromClassName;
-  return this.collection(className).then((coll) => {
-    return coll.update(doc, doc, {upsert: true});
+  let className = `_Join:${key}:${fromClassName}`;
+  return this.adaptiveCollection(className).then((coll) => {
+    return coll.upsertOne(doc, doc);
   });
 };
 
 // Removes a relation.
 // Returns a promise that resolves successfully iff the remove was
 // successful.
-DatabaseController.prototype.removeRelation = function(key, fromClassName,
-                                                  fromId, toId) {
+DatabaseController.prototype.removeRelation = function(key, fromClassName, fromId, toId) {
   var doc = {
     relatedId: toId,
     owningId: fromId
   };
-  var className = '_Join:' + key + ':' + fromClassName;
-  return this.collection(className).then((coll) => {
-    return coll.remove(doc);
+  let className = `_Join:${key}:${fromClassName}`;
+  return this.adaptiveCollection(className).then(coll => {
+    return coll.deleteOne(doc);
   });
 };
 
@@ -273,64 +273,63 @@ DatabaseController.prototype.destroy = function(className, query, options = {})
   var aclGroup = options.acl || [];
 
   var schema;
-  return this.loadSchema().then((s) => {
-    schema = s;
-    if (!isMaster) {
-      return schema.validatePermission(className, aclGroup, 'delete');
-    }
-    return Promise.resolve();
-  }).then(() => {
-
-    return this.collection(className);
-  }).then((coll) => {
-    var mongoWhere = transform.transformWhere(schema, className, query);
-
-    if (options.acl) {
-      var writePerms = [
-        {_wperm: {'$exists': false}}
-      ];
-      for (var entry of options.acl) {
-        writePerms.push({_wperm: {'$in': [entry]}});
+  return this.loadSchema()
+    .then(s => {
+      schema = s;
+      if (!isMaster) {
+        return schema.validatePermission(className, aclGroup, 'delete');
       }
-      mongoWhere = {'$and': [mongoWhere, {'$or': writePerms}]};
-    }
+      return Promise.resolve();
+    })
+    .then(() => this.adaptiveCollection(className))
+    .then(collection => {
+      let mongoWhere = transform.transformWhere(schema, className, query);
 
-    return coll.remove(mongoWhere);
-  }).then((resp) => {
-    //Check _Session to avoid changing password failed without any session.
-    if (resp.result.n === 0 && className !== "_Session") {
-      return Promise.reject(
-        new Parse.Error(Parse.Error.OBJECT_NOT_FOUND,
-                        'Object not found.'));
-
-    }
-  }, (error) => {
-    throw error;
-  });
+      if (options.acl) {
+        var writePerms = [
+          { _wperm: { '$exists': false } }
+        ];
+        for (var entry of options.acl) {
+          writePerms.push({ _wperm: { '$in': [entry] } });
+        }
+        mongoWhere = { '$and': [mongoWhere, { '$or': writePerms }] };
+      }
+      return collection.deleteMany(mongoWhere);
+    })
+    .then(resp => {
+      //Check _Session to avoid changing password failed without any session.
+      // TODO: @nlutsenko Stop relying on `result.n`
+      if (resp.result.n === 0 && className !== "_Session") {
+        throw new Parse.Error(Parse.Error.OBJECT_NOT_FOUND, 'Object not found.');
+      }
+    });
 };
 
 // Inserts an object into the database.
 // Returns a promise that resolves successfully iff the object saved.
 DatabaseController.prototype.create = function(className, object, options) {
+  // Make a copy of the object, so we don't mutate the incoming data.
+  object = deepcopy(object);
+
   var schema;
   var isMaster = !('acl' in options);
   var aclGroup = options.acl || [];
 
-  return this.loadSchema().then((s) => {
-    schema = s;
-    if (!isMaster) {
-      return schema.validatePermission(className, aclGroup, 'create');
-    }
-    return Promise.resolve();
-  }).then(() => {
-
-    return this.handleRelationUpdates(className, null, object);
-  }).then(() => {
-    return this.collection(className);
-  }).then((coll) => {
-    var mongoObject = transform.transformCreate(schema, className, object);
-    return coll.insert([mongoObject]);
-  });
+  return this.validateClassName(className)
+    .then(() => this.loadSchema())
+    .then(s => {
+      schema = s;
+      if (!isMaster) {
+        return schema.validatePermission(className, aclGroup, 'create');
+      }
+      return Promise.resolve();
+    })
+    .then(() => this.handleRelationUpdates(className, null, object))
+    .then(() => this.adaptiveCollection(className))
+    .then(coll => {
+      var mongoObject = transform.transformCreate(schema, className, object);
+      return coll.insertOne(mongoObject);
+    });
 };
 
 // Runs a mongo query on the database.
@@ -390,14 +389,14 @@ DatabaseController.prototype.owningIds = function(className, key, relatedIds) {
 // equal-to-pointer constraints on relation fields.
 // Returns a promise that resolves when query is mutated
 DatabaseController.prototype.reduceInRelation = function(className, query, schema) {
-  
+
   // Search for an in-relation or equal-to-relation
   // Make it sequential for now, not sure of paralleization side effects
   if (query['$or']) {
     let ors = query['$or'];
     return Promise.all(ors.map((aQuery, index) => {
       return this.reduceInRelation(className, aQuery, schema).then((aQuery) => {
-        query['$or'][index] = aQuery; 
+        query['$or'][index] = aQuery;
       })
     }));
   }
@@ -417,14 +416,14 @@ DatabaseController.prototype.reduceInRelation = function(className, query, schem
         relatedIds = [query[key].objectId];
       }
       return this.owningIds(className, key, relatedIds).then((ids) => {
-        delete query[key]; 
+        delete query[key];
         this.addInObjectIdsIds(ids, query);
         return Promise.resolve(query);
       });
     }
     return Promise.resolve(query);
   })
-  
+
   return Promise.all(promises).then(() => {
     return Promise.resolve(query);
   })
@@ -433,13 +432,13 @@ DatabaseController.prototype.reduceInRelation = function(className, query, schem
 // Modifies query so that it no longer has $relatedTo
 // Returns a promise that resolves when query is mutated
 DatabaseController.prototype.reduceRelationKeys = function(className, query) {
-  
+
   if (query['$or']) {
     return Promise.all(query['$or'].map((aQuery) => {
       return this.reduceRelationKeys(className, aQuery);
     }));
   }
-  
+
   var relatedTo = query['$relatedTo'];
   if (relatedTo) {
     return this.relatedIds(
@@ -455,13 +454,18 @@ DatabaseController.prototype.reduceRelationKeys = function(className, query) {
 
 DatabaseController.prototype.addInObjectIdsIds = function(ids, query) {
   if (typeof query.objectId == 'string') {
-    query.objectId = {'$in': [query.objectId]};
+    // Add equality op as we are sure 
+    // we had a constraint on that one
+    query.objectId = {'$eq': query.objectId};
   }
-   query.objectId = query.objectId || {};
-   let queryIn =  [].concat(query.objectId['$in'] || [], ids || []);
-   // make a set and spread to remove duplicates
-   query.objectId = {'$in': [...new Set(queryIn)]};
-   return query;
+  query.objectId = query.objectId || {};
+  let queryIn =  [].concat(query.objectId['$in'] || [], ids || []);
+  // make a set and spread to remove duplicates
+  // replace the $in operator as other constraints
+  // may be set
+  query.objectId['$in'] = [...new Set(queryIn)];
+
+  return query;
 }
 
 // Runs a query on the database.
diff --git a/src/Controllers/FilesController.js b/src/Controllers/FilesController.js
index 712e326c..335dfdf2 100644
--- a/src/Controllers/FilesController.js
+++ b/src/Controllers/FilesController.js
@@ -13,11 +13,11 @@ export class FilesController extends AdaptableController {
   }
 
   createFile(config, filename, data, contentType) {
-    
+
     let extname = path.extname(filename);
-    
+
     const hasExtension = extname.length > 0;
-    
+
     if (!hasExtension && contentType && mime.extension(contentType)) {
       filename = filename + '.' + mime.extension(contentType);
     } else if (hasExtension && !contentType) {
diff --git a/src/Controllers/HooksController.js b/src/Controllers/HooksController.js
index 1e47acd7..cbf26f8a 100644
--- a/src/Controllers/HooksController.js
+++ b/src/Controllers/HooksController.js
@@ -8,104 +8,91 @@ import * as request from "request";
 const DefaultHooksCollectionName = "_Hooks";
 
 export class HooksController {
-  _applicationId: string;
-  _collectionPrefix: string;
+  _applicationId:string;
+  _collectionPrefix:string;
   _collection;
 
-  constructor(applicationId: string, collectionPrefix: string = '') {
+  constructor(applicationId:string, collectionPrefix:string = '') {
     this._applicationId = applicationId;
     this._collectionPrefix = collectionPrefix;
   }
-  
-  database() {
-    return DatabaseAdapter.getDatabaseConnection(this._applicationId, this._collectionPrefix);
+
+  load() {
+    return this._getHooks().then(hooks => {
+      hooks = hooks || [];
+      hooks.forEach((hook) => {
+        this.addHookToTriggers(hook);
+      });
+    });
   }
-  
-  collection() {
+
+  getCollection() {
     if (this._collection) {
       return Promise.resolve(this._collection)
     }
-    return this.database().rawCollection(DefaultHooksCollectionName).then((collection) => {
+
+    let database = DatabaseAdapter.getDatabaseConnection(this._applicationId, this._collectionPrefix);
+    return database.adaptiveCollection(DefaultHooksCollectionName).then(collection => {
       this._collection = collection;
       return collection;
     });
   }
-  
+
   getFunction(functionName) {
-    return this.getOne({functionName: functionName})
+    return this._getHooks({ functionName: functionName }, 1).then(results => results[0]);
   }
-  
+
   getFunctions() {
-    return this.get({functionName: { $exists: true }})
+    return this._getHooks({ functionName: { $exists: true } });
   }
-  
+
   getTrigger(className, triggerName) {
-    return this.getOne({className: className, triggerName: triggerName })
+    return this._getHooks({ className: className, triggerName: triggerName }, 1).then(results => results[0]);
   }
-  
+
   getTriggers() {
-    return this.get({className: { $exists: true }, triggerName: { $exists: true }})
+    return this._getHooks({ className: { $exists: true }, triggerName: { $exists: true } });
   }
-  
+
   deleteFunction(functionName) {
     triggers.removeFunction(functionName, this._applicationId);
-    return this.delete({functionName: functionName});
+    return this._removeHooks({ functionName: functionName });
   }
-  
+
   deleteTrigger(className, triggerName) {
     triggers.removeTrigger(triggerName, className, this._applicationId);
-    return this.delete({className: className, triggerName: triggerName});
+    return this._removeHooks({ className: className, triggerName: triggerName });
   }
-  
-  delete(query) {
-    return this.collection().then((collection) => {
-      return collection.remove(query)
-    }).then( (res) => {
+
+  _getHooks(query, limit) {
+    let options = limit ? { limit: limit } : undefined;
+    return this.getCollection().then(collection => collection.find(query, options));
+  }
+
+  _removeHooks(query) {
+    return this.getCollection().then(collection => {
+      return collection.deleteMany(query);
+    }).then(() => {
       return {};
-    }, 1);
-  }
-  
-  getOne(query) {
-    return this.collection()
-    .then(coll => coll.findOne(query, {_id: 0}))
-    .then(hook => {
-      return hook;
     });
   }
-  
-  get(query) {
-    return this.collection()
-    .then(coll => coll.find(query, {_id: 0}).toArray())
-    .then(hooks => {
-      return hooks;
-    });
-  }
-  
-  getHooks() {
-    return this.collection()
-    .then(coll => coll.find({}, {_id: 0}).toArray())
-    .then(hooks => {
-      return hooks;
-    }, () => ([]))   
-  }
-  
+
   saveHook(hook) {
-    
     var query;
     if (hook.functionName && hook.url) {
-      query = {functionName: hook.functionName }
+      query = { functionName: hook.functionName }
     } else if (hook.triggerName && hook.className && hook.url) {
       query = { className: hook.className, triggerName: hook.triggerName }
     } else {
       throw new Parse.Error(143, "invalid hook declaration");
     }
-    return this.collection().then((collection) => {
-      return collection.update(query, hook, {upsert: true})
-    }).then(function(res){
-      return hook;
-    })
+    return this.getCollection()
+      .then(collection => collection.upsertOne(query, hook))
+      .then(() => {
+        return hook;
+      });
   }
-  
+
   addHookToTriggers(hook) {
     var wrappedFunction = wrapToHTTPRequest(hook);
     wrappedFunction.url = hook.url;
@@ -114,13 +101,13 @@ export class HooksController {
     } else {
       triggers.addFunction(hook.functionName, wrappedFunction, null, this._applicationId);
     }
-  } 
-  
+  }
+
   addHook(hook) {
     this.addHookToTriggers(hook);
     return this.saveHook(hook);
   }
-  
+
   createOrUpdateHook(aHook) {
     var hook;
     if (aHook && aHook.functionName && aHook.url) {
@@ -132,19 +119,19 @@ export class HooksController {
       hook.className = aHook.className;
       hook.url = aHook.url;
       hook.triggerName = aHook.triggerName;
-      
+
     } else {
       throw new Parse.Error(143, "invalid hook declaration");
-    } 
-    
+    }
+
     return this.addHook(hook);
   };
-  
+
   createHook(aHook) {
     if (aHook.functionName) {
       return this.getFunction(aHook.functionName).then((result) => {
         if (result) {
-          throw new Parse.Error(143,`function name: ${aHook.functionName} already exits`);
+          throw new Parse.Error(143, `function name: ${aHook.functionName} already exits`);
         } else {
           return this.createOrUpdateHook(aHook);
         }
@@ -152,49 +139,39 @@ export class HooksController {
     } else if (aHook.className && aHook.triggerName) {
       return this.getTrigger(aHook.className, aHook.triggerName).then((result) => {
         if (result) {
-          throw new Parse.Error(143,`class ${aHook.className} already has trigger ${aHook.triggerName}`); 
+          throw new Parse.Error(143, `class ${aHook.className} already has trigger ${aHook.triggerName}`);
         }
         return this.createOrUpdateHook(aHook);
       });
     }
-    
+
     throw new Parse.Error(143, "invalid hook declaration");
   };
-  
+
   updateHook(aHook) {
     if (aHook.functionName) {
       return this.getFunction(aHook.functionName).then((result) => {
         if (result) {
           return this.createOrUpdateHook(aHook);
         }
-        throw new Parse.Error(143,`no function named: ${aHook.functionName} is defined`); 
+        throw new Parse.Error(143, `no function named: ${aHook.functionName} is defined`);
       });
     } else if (aHook.className && aHook.triggerName) {
       return this.getTrigger(aHook.className, aHook.triggerName).then((result) => {
         if (result) {
           return this.createOrUpdateHook(aHook);
         }
-        throw new Parse.Error(143,`class ${aHook.className} does not exist`); 
+        throw new Parse.Error(143, `class ${aHook.className} does not exist`);
       });
     }
     throw new Parse.Error(143, "invalid hook declaration");
   };
-  
-  load() {
-    return this.getHooks().then((hooks) => {
-      hooks = hooks || [];
-      hooks.forEach((hook) => {
-        this.addHookToTriggers(hook);
-      });
-     });
-  }
-  
 }
 
 function wrapToHTTPRequest(hook) {
-  return function(req, res) {
-    var jsonBody = {};
-    for(var i in req) {
+  return (req, res) => {
+    let jsonBody = {};
+    for (var i in req) {
       jsonBody[i] = req[i];
     }
     if (req.object) {
@@ -205,30 +182,31 @@ function wrapToHTTPRequest(hook) {
       jsonBody.original = req.original.toJSON();
       jsonBody.original.className = req.original.className;
     }
-    var jsonRequest = {};
-    jsonRequest.headers = {
-      'Content-Type': 'application/json'
-    }
-    jsonRequest.body = JSON.stringify(jsonBody);
-    
-    request.post(hook.url, jsonRequest, function(err, httpResponse, body){
+    let jsonRequest = {
+      headers: {
+        'Content-Type': 'application/json'
+      },
+      body: JSON.stringify(jsonBody)
+    };
+
+    request.post(hook.url, jsonRequest, function (err, httpResponse, body) {
       var result;
       if (body) {
         if (typeof body == "string") {
           try {
             body = JSON.parse(body);
-          } catch(e) {
-            err = {error: "Malformed response", code: -1};
+          } catch (e) {
+            err = { error: "Malformed response", code: -1 };
           }
         }
         if (!err) {
           result = body.success;
-          err  = body.error;
+          err = body.error;
         }
       }
       if (err) {
         return res.error(err);
-      } else {   
+      } else {
         return res.success(result);
       }
     });
diff --git a/src/Controllers/PushController.js b/src/Controllers/PushController.js
index 55cb6095..8dbc6a59 100644
--- a/src/Controllers/PushController.js
+++ b/src/Controllers/PushController.js
@@ -36,17 +36,6 @@ export class PushController extends AdaptableController {
       }
     }
   }
-  
-  /**
-   * Check whether the api call has master key or not.
-   * @param {Object} request A request object
-   */ 
-  static validateMasterKey(auth = {}) {
-    if (!auth.isMaster) {
-      throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
-                            'Master key is invalid, you should only use master key to send push');
-    }
-  }
 
   sendPush(body = {}, where = {}, config, auth) {
     var pushAdapter = this.adapter;
@@ -54,65 +43,65 @@ export class PushController extends AdaptableController {
       throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
                             'Push adapter is not available');
     }
-    PushController.validateMasterKey(auth);
     PushController.validatePushType(where, pushAdapter.getValidPushTypes());
     // Replace the expiration_time with a valid Unix epoch milliseconds time
     body['expiration_time'] = PushController.getExpirationTime(body);
     // TODO: If the req can pass the checking, we return immediately instead of waiting
     // pushes to be sent. We probably change this behaviour in the future.
-    let badgeUpdate = Promise.resolve();
+    let badgeUpdate = () => {
+      return Promise.resolve();
+    }
 
-    if (body.badge) {
-      var op = {};
-      if (body.badge == "Increment") {
-        op = {'$inc': {'badge': 1}}
-      } else if (Number(body.badge)) {
-        op = {'$set': {'badge': body.badge } }
+    if (body.data && body.data.badge) {
+      let badge = body.data.badge;
+      let op = {};
+      if (badge == "Increment") {
+        op = { $inc: { badge: 1 } }
+      } else if (Number(badge)) {
+        op = { $set: { badge: badge } }
       } else {
         throw "Invalid value for badge, expected number or 'Increment'";
       }
       let updateWhere = deepcopy(where);
+      updateWhere.deviceType = 'ios'; // Only on iOS!
 
-      // Only on iOS!
-      updateWhere.deviceType = 'ios';
-
-      // TODO: @nlutsenko replace with better thing
-      badgeUpdate = config.database.rawCollection("_Installation").then((coll) => {
-        return coll.update(updateWhere, op, { multi: true });
-      });
+      badgeUpdate = () => { 
+       return config.database.adaptiveCollection("_Installation")
+        .then(coll => coll.updateMany(updateWhere, op));
+      }
     }
 
-    return badgeUpdate.then(() => {
-      return rest.find(config, auth, '_Installation', where)
+    return badgeUpdate().then(() => {
+      return rest.find(config, auth, '_Installation', where);
     }).then((response) => {
-      if (body.badge && body.badge == "Increment") {
+      if (body.data && body.data.badge && body.data.badge == "Increment") {
         // Collect the badges to reduce the # of calls
         let badgeInstallationsMap = response.results.reduce((map, installation) => {
           let badge = installation.badge;
           if (installation.deviceType != "ios") {
             badge = UNSUPPORTED_BADGE_KEY;
           }
-          map[badge] = map[badge] || [];
-          map[badge].push(installation);
+          map[badge+''] = map[badge+''] || [];
+          map[badge+''].push(installation);
           return map;
         }, {});
- 
+
         // Map the on the badges count and return the send result
         let promises = Object.keys(badgeInstallationsMap).map((badge) => {
           let payload = deepcopy(body);
           if (badge == UNSUPPORTED_BADGE_KEY) {
-            delete payload.badge;
+            delete payload.data.badge;
           } else {
-            payload.badge = parseInt(badge);
+            payload.data.badge = parseInt(badge);
           }
-          return pushAdapter.send(payload, badgeInstallationsMap[badge]); 
+          return pushAdapter.send(payload, badgeInstallationsMap[badge]);
         });
         return Promise.all(promises);
       }
       return pushAdapter.send(body, response.results);
     });
   }
-  
+
   /**
    * Get expiration time from the request body.
    * @param {Object} request A request object
@@ -144,6 +133,6 @@ export class PushController extends AdaptableController {
   expectedAdapterType() {
     return PushAdapter;
   }
-};
+}
 
 export default PushController;
diff --git a/src/RestQuery.js b/src/RestQuery.js
index 9a4764a9..c14ac415 100644
--- a/src/RestQuery.js
+++ b/src/RestQuery.js
@@ -168,9 +168,7 @@ RestQuery.prototype.validateClientClassCreation = function() {
   let sysClass = ['_User', '_Installation', '_Role', '_Session', '_Product'];
   if (this.config.allowClientClassCreation === false && !this.auth.isMaster
       && sysClass.indexOf(this.className) === -1) {
-    return this.config.database.loadSchema().then((schema) => {
-      return schema.hasClass(this.className)
-    }).then((hasClass) => {
+    return this.config.database.collectionExists(this.className).then((hasClass) => {
       if (hasClass === true) {
         return Promise.resolve();
       }
@@ -326,12 +324,10 @@ RestQuery.prototype.replaceDontSelect = function() {
       !dontSelectValue.key ||
       typeof dontSelectValue.query !== 'object' ||
       !dontSelectValue.query.className ||
-      !dontSelectValue.query.where ||
       Object.keys(dontSelectValue).length !== 2) {
     throw new Parse.Error(Parse.Error.INVALID_QUERY,
                           'improper usage of $dontSelect');
   }
-
   var subquery = new RestQuery(
     this.config, this.auth, dontSelectValue.query.className,
     dontSelectValue.query.where);
@@ -396,6 +392,7 @@ RestQuery.prototype.runCount = function() {
   }
   this.findOptions.count = true;
   delete this.findOptions.skip;
+  delete this.findOptions.limit;
   return this.config.database.find(
     this.className, this.restWhere, this.findOptions).then((c) => {
       this.response.count = c;
diff --git a/src/RestWrite.js b/src/RestWrite.js
index a907a61c..9e07c93a 100644
--- a/src/RestWrite.js
+++ b/src/RestWrite.js
@@ -112,9 +112,7 @@ RestWrite.prototype.validateClientClassCreation = function() {
   let sysClass = ['_User', '_Installation', '_Role', '_Session', '_Product'];
   if (this.config.allowClientClassCreation === false && !this.auth.isMaster
       && sysClass.indexOf(this.className) === -1) {
-    return this.config.database.loadSchema().then((schema) => {
-      return schema.hasClass(this.className)
-    }).then((hasClass) => {
+    return this.config.database.collectionExists(this.className).then((hasClass) => {
       if (hasClass === true) {
         return Promise.resolve();
       }
@@ -164,6 +162,7 @@ RestWrite.prototype.runBeforeTrigger = function() {
   }).then((response) => {
     if (response && response.object) {
       this.data = response.object;
+      this.storage['changedByTrigger'] = true;
       // We should delete the objectId for an update write
       if (this.query && this.query.objectId) {
         delete this.data.objectId
@@ -178,7 +177,11 @@ RestWrite.prototype.setRequiredFieldsIfNeeded = function() {
     this.data.updatedAt = this.updatedAt;
     if (!this.query) {
       this.data.createdAt = this.updatedAt;
-      this.data.objectId = cryptoUtils.newObjectId();
+
+      // Only assign new objectId if we are creating new object
+      if (!this.data.objectId) {
+        this.data.objectId = cryptoUtils.newObjectId();
+      }
     }
   }
   return Promise.resolve();
@@ -802,6 +805,9 @@ RestWrite.prototype.runDatabaseOperation = function() {
           objectId: this.data.objectId,
           createdAt: this.data.createdAt
         };
+        if (this.storage['changedByTrigger']) {
+          Object.assign(resp, this.data);
+        }
         if (this.storage['token']) {
           resp.sessionToken = this.storage['token'];
         }
diff --git a/src/Routers/GlobalConfigRouter.js b/src/Routers/GlobalConfigRouter.js
index 53abdac5..156cecf6 100644
--- a/src/Routers/GlobalConfigRouter.js
+++ b/src/Routers/GlobalConfigRouter.js
@@ -1,38 +1,28 @@
 // global_config.js
 
-var Parse = require('parse/node').Parse;
-
 import PromiseRouter from '../PromiseRouter';
 import * as middleware from "../middlewares";
 
 export class GlobalConfigRouter extends PromiseRouter {
   getGlobalConfig(req) {
-    return req.config.database.rawCollection('_GlobalConfig')
-      .then(coll => coll.findOne({'_id': 1}))
-      .then(globalConfig => ({response: { params: globalConfig.params }}))
-      .catch(() => ({
-        status: 404,
-        response: {
-          code: Parse.Error.INVALID_KEY_NAME,
-          error: 'config does not exist',
+    return req.config.database.adaptiveCollection('_GlobalConfig')
+      .then(coll => coll.find({ '_id': 1 }, { limit: 1 }))
+      .then(results => {
+        if (results.length != 1) {
+          // If there is no config in the database - return empty config.
+          return { response: { params: {} } };
         }
-      }));
+        let globalConfig = results[0];
+        return { response: { params: globalConfig.params } };
+      });
   }
+
   updateGlobalConfig(req) {
-    return req.config.database.rawCollection('_GlobalConfig')
-      .then(coll => coll.findOneAndUpdate({ _id: 1 }, { $set: req.body }))
-      .then(response => {
-        return { response: { result: true } }
-      })
-      .catch(() => ({
-        status: 404,
-        response: {
-          code: Parse.Error.INVALID_KEY_NAME,
-          error: 'config cannot be updated',
-        }
-     }));
+    return req.config.database.adaptiveCollection('_GlobalConfig')
+      .then(coll => coll.upsertOne({ _id: 1 }, { $set: req.body }))
+      .then(() => ({ response: { result: true } }));
   }
-  
+
   mountRoutes() {
     this.route('GET', '/config', req => { return this.getGlobalConfig(req) });
     this.route('PUT', '/config', middleware.promiseEnforceMasterKeyAccess, req => { return this.updateGlobalConfig(req) });
diff --git a/src/Routers/PushRouter.js b/src/Routers/PushRouter.js
index f75d9998..c3af0d28 100644
--- a/src/Routers/PushRouter.js
+++ b/src/Routers/PushRouter.js
@@ -1,57 +1,42 @@
-import PushController from '../Controllers/PushController'
 import PromiseRouter from '../PromiseRouter';
+import * as middleware from "../middlewares";
+import { Parse } from "parse/node";
 
 export class PushRouter extends PromiseRouter {
 
   mountRoutes() {
-    this.route("POST", "/push", req => { return this.handlePOST(req); });
-  }
-  
-  /**
-   * Check whether the api call has master key or not.
-   * @param {Object} request A request object
-   */ 
-  static validateMasterKey(req) {
-    if (req.info.masterKey !== req.config.masterKey) {
-      throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
-                            'Master key is invalid, you should only use master key to send push');
-    }
+    this.route("POST", "/push", middleware.promiseEnforceMasterKeyAccess, PushRouter.handlePOST);
   }
 
-  handlePOST(req) {
-    // TODO: move to middlewares when support for Promise middlewares
-    PushRouter.validateMasterKey(req);
-    
+  static handlePOST(req) {
     const pushController = req.config.pushController;
     if (!pushController) {
-      throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
-                            'Push controller is not set');
+      throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED, 'Push controller is not set');
     }
 
-    var where = PushRouter.getQueryCondition(req);
-
+    let where = PushRouter.getQueryCondition(req);
     pushController.sendPush(req.body, where, req.config, req.auth);
     return Promise.resolve({
-        response: {
-          'result': true
-        }
+      response: {
+        'result': true
+      }
     });
   }
-  
-    /**
+
+  /**
    * Get query condition from the request body.
-   * @param {Object} request A request object
+   * @param {Object} req A request object
    * @returns {Object} The query condition, the where field in a query api call
    */
   static getQueryCondition(req) {
-    var body = req.body || {};
-    var hasWhere = typeof body.where !== 'undefined';
-    var hasChannels = typeof body.channels !== 'undefined';
+    let body = req.body || {};
+    let hasWhere = typeof body.where !== 'undefined';
+    let hasChannels = typeof body.channels !== 'undefined';
 
-    var where;
+    let where;
     if (hasWhere && hasChannels) {
       throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
-                            'Channels and query can not be set at the same time.');
+        'Channels and query can not be set at the same time.');
     } else if (hasWhere) {
       where = body.where;
     } else if (hasChannels) {
@@ -62,11 +47,10 @@ export class PushRouter extends PromiseRouter {
       }
     } else {
       throw new Parse.Error(Parse.Error.PUSH_MISCONFIGURED,
-                            'Channels and query should be set at least one.');
+        'Channels and query should be set at least one.');
     }
     return where;
   }
-  
 }
 
 export default PushRouter;
diff --git a/src/Routers/SchemasRouter.js b/src/Routers/SchemasRouter.js
index 59fef02d..a0a90ef2 100644
--- a/src/Routers/SchemasRouter.js
+++ b/src/Routers/SchemasRouter.js
@@ -4,7 +4,7 @@ var express = require('express'),
   Parse = require('parse/node').Parse,
   Schema = require('../Schema');
 
-import PromiseRouter from '../PromiseRouter';
+import PromiseRouter   from '../PromiseRouter';
 import * as middleware from "../middlewares";
 
 function classNameMismatchResponse(bodyClass, pathClass) {
@@ -14,44 +14,23 @@ function classNameMismatchResponse(bodyClass, pathClass) {
   );
 }
 
-function mongoSchemaAPIResponseFields(schema) {
-  var fieldNames = Object.keys(schema).filter(key => key !== '_id' && key !== '_metadata');
-  var response = fieldNames.reduce((obj, fieldName) => {
-    obj[fieldName] = Schema.mongoFieldTypeToSchemaAPIType(schema[fieldName])
-    return obj;
-  }, {});
-  response.ACL = {type: 'ACL'};
-  response.createdAt = {type: 'Date'};
-  response.updatedAt = {type: 'Date'};
-  response.objectId = {type: 'String'};
-  return response;
-}
-
-function mongoSchemaToSchemaAPIResponse(schema) {
-  return {
-    className: schema._id,
-    fields: mongoSchemaAPIResponseFields(schema),
-  };
-}
-
 function getAllSchemas(req) {
-  return req.config.database.adaptiveCollection('_SCHEMA')
-    .then(collection => collection.find({}))
-    .then(schemas => schemas.map(mongoSchemaToSchemaAPIResponse))
-    .then(schemas => ({ response: { results: schemas }}));
+  return req.config.database.schemaCollection()
+    .then(collection => collection.getAllSchemas())
+    .then(schemas => schemas.map(Schema.mongoSchemaToSchemaAPIResponse))
+    .then(schemas => ({ response: { results: schemas } }));
 }
 
 function getOneSchema(req) {
   const className = req.params.className;
-  return req.config.database.adaptiveCollection('_SCHEMA')
-    .then(collection => collection.find({ '_id': className }, { limit: 1 }))
-    .then(results => {
-      if (results.length != 1) {
+  return req.config.database.schemaCollection()
+    .then(collection => collection.findSchema(className))
+    .then(mongoSchema => {
+      if (!mongoSchema) {
         throw new Parse.Error(Parse.Error.INVALID_CLASS_NAME, `Class ${className} does not exist.`);
       }
-      return results[0];
-    })
-    .then(schema => ({ response: mongoSchemaToSchemaAPIResponse(schema) }));
+      return { response: Schema.mongoSchemaToSchemaAPIResponse(mongoSchema) };
+    });
 }
 
 function createSchema(req) {
@@ -68,7 +47,7 @@ function createSchema(req) {
 
   return req.config.database.loadSchema()
     .then(schema => schema.addClassIfNotExists(className, req.body.fields))
-    .then(result => ({ response: mongoSchemaToSchemaAPIResponse(result) }));
+    .then(result => ({ response: Schema.mongoSchemaToSchemaAPIResponse(result) }));
 }
 
 function modifySchema(req) {
@@ -85,7 +64,7 @@ function modifySchema(req) {
         throw new Parse.Error(Parse.Error.INVALID_CLASS_NAME, `Class ${req.params.className} does not exist.`);
       }
 
-      let existingFields = Object.assign(schema.data[className], {_id: className});
+      let existingFields = Object.assign(schema.data[className], { _id: className });
       Object.keys(submittedFields).forEach(name => {
         let field = submittedFields[name];
         if (existingFields[name] && field.__op !== 'Delete') {
@@ -103,24 +82,27 @@ function modifySchema(req) {
       }
 
       // Finally we have checked to make sure the request is valid and we can start deleting fields.
-      // Do all deletions first, then a single save to _SCHEMA collection to handle all additions.
-      let deletionPromises = [];
-      Object.keys(submittedFields).forEach(submittedFieldName => {
-        if (submittedFields[submittedFieldName].__op === 'Delete') {
-          let promise = schema.deleteField(submittedFieldName, className, req.config.database);
-          deletionPromises.push(promise);
+      // Do all deletions first, then add fields to avoid duplicate geopoint error.
+      let deletePromises = [];
+      let insertedFields = [];
+      Object.keys(submittedFields).forEach(fieldName => {
+        if (submittedFields[fieldName].__op === 'Delete') {
+          const promise = schema.deleteField(fieldName, className, req.config.database);
+          deletePromises.push(promise);
+        } else {
+          insertedFields.push(fieldName);
         }
       });
-
-      return Promise.all(deletionPromises)
-        .then(() => new Promise((resolve, reject) => {
-          schema.collection.update({_id: className}, mongoObject.result, {w: 1}, (err, docs) => {
-            if (err) {
-              reject(err);
-            }
-            resolve({ response: mongoSchemaToSchemaAPIResponse(mongoObject.result)});
-          })
-        }));
+      return Promise.all(deletePromises) // Delete Everything
+        .then(() => schema.reloadData()) // Reload our Schema, so we have all the new values
+        .then(() => {
+          let promises = insertedFields.map(fieldName => {
+            const mongoType = mongoObject.result[fieldName];
+            return schema.validateField(className, fieldName, mongoType);
+          });
+          return Promise.all(promises);
+        })
+        .then(() => ({ response: Schema.mongoSchemaToSchemaAPIResponse(mongoObject.result) }));
     });
 }
 
@@ -159,8 +141,8 @@ function deleteSchema(req) {
     .then(() => {
       // We've dropped the collection now, so delete the item from _SCHEMA
       // and clear the _Join collections
-      return req.config.database.adaptiveCollection('_SCHEMA')
-        .then(coll => coll.findOneAndDelete({_id: req.params.className}))
+      return req.config.database.schemaCollection()
+        .then(coll => coll.findAndDeleteSchema(req.params.className))
         .then(document => {
           if (document === null) {
             //tried to delete non-existent class
diff --git a/src/Schema.js b/src/Schema.js
index 73eaa325..2a048a54 100644
--- a/src/Schema.js
+++ b/src/Schema.js
@@ -168,12 +168,12 @@ function schemaAPITypeToMongoFieldType(type) {
 // '_metadata' is ignored for now
 // Everything else is expected to be a userspace field.
 class Schema {
-  collection;
+  _collection;
   data;
   perms;
 
   constructor(collection) {
-    this.collection = collection;
+    this._collection = collection;
 
     // this.data[className][fieldName] tells you the type of that field
     this.data = {};
@@ -184,8 +184,8 @@ class Schema {
   reloadData() {
     this.data = {};
     this.perms = {};
-    return this.collection.find({}, {}).toArray().then(mongoSchema => {
-      for (let obj of mongoSchema) {
+    return this._collection.getAllSchemas().then(results => {
+      for (let obj of results) {
         let className = null;
         let classData = {};
         let permsData = null;
@@ -231,7 +231,7 @@ class Schema {
       return Promise.reject(mongoObject);
     }
 
-    return this.collection.insertOne(mongoObject.result)
+    return this._collection.addSchema(className, mongoObject.result)
       .then(result => result.ops[0])
       .catch(error => {
         if (error.code === 11000) { //Mongo's duplicate key error
@@ -268,7 +268,7 @@ class Schema {
         'schema is frozen, cannot add: ' + className);
     }
     // We don't have this class. Update the schema
-    return this.collection.insert([{_id: className}]).then(() => {
+    return this._collection.addSchema(className).then(() => {
       // The schema update succeeded. Reload the schema
       return this.reloadData();
     }, () => {
@@ -280,23 +280,21 @@ class Schema {
     }).then(() => {
       // Ensure that the schema now validates
       return this.validateClassName(className, true);
-    }, (error) => {
+    }, () => {
       // The schema still doesn't validate. Give up
-      throw new Parse.Error(Parse.Error.INVALID_JSON,
-        'schema class name does not revalidate');
+      throw new Parse.Error(Parse.Error.INVALID_JSON, 'schema class name does not revalidate');
     });
   }
 
   // Sets the Class-level permissions for a given className, which must exist.
   setPermissions(className, perms) {
-    var query = {_id: className};
     var update = {
       _metadata: {
         class_permissions: perms
       }
     };
     update = {'$set': update};
-    return this.collection.findAndModify(query, {}, update, {}).then(() => {
+    return this._collection.updateSchema(className, update).then(() => {
       // The update succeeded. Reload the schema
       return this.reloadData();
     });
@@ -354,12 +352,12 @@ class Schema {
     // We don't have this field. Update the schema.
     // Note that we use the $exists guard and $set to avoid race
     // conditions in the database. This is important!
-    var query = {_id: className};
-    query[key] = {'$exists': false};
+    let query = {};
+    query[key] = { '$exists': false };
     var update = {};
     update[key] = type;
     update = {'$set': update};
-    return this.collection.findAndModify(query, {}, update, {}).then(() => {
+    return this._collection.upsertSchema(className, query, update).then(() => {
       // The update succeeded. Reload the schema
       return this.reloadData();
     }, () => {
@@ -409,19 +407,27 @@ class Schema {
 
             if (this.data[className][fieldName].startsWith('relation<')) {
               //For relations, drop the _Join table
-              return database.dropCollection(`_Join:${fieldName}:${className}`);
+              return database.dropCollection(`_Join:${fieldName}:${className}`)
+              .then(() => {
+                return Promise.resolve();
+              }, error => {
+                if (error.message == 'ns not found') {
+                  return Promise.resolve();
+                }
+                return Promise.reject(error);
+              });
             }
 
             // for non-relations, remove all the data.
             // This is necessary to ensure that the data is still gone if they add the same field.
-            return database.collection(className)
+            return database.adaptiveCollection(className)
               .then(collection => {
-                var mongoFieldName = this.data[className][fieldName].startsWith('*') ? '_p_' + fieldName : fieldName;
-                return collection.update({}, { "$unset": { [mongoFieldName] : null } }, { multi: true });
+                let mongoFieldName = this.data[className][fieldName].startsWith('*') ? `_p_${fieldName}` : fieldName;
+                return collection.updateMany({}, { "$unset": { [mongoFieldName]: null } });
               });
           })
           // Save the _SCHEMA object
-          .then(() => this.collection.update({ _id: className }, { $unset: {[fieldName]: null }}));
+          .then(() => this._collection.updateSchema(className, { $unset: { [fieldName]: null } }));
       });
   }
 
@@ -440,9 +446,12 @@ class Schema {
         geocount++;
       }
       if (geocount > 1) {
-        throw new Parse.Error(
-          Parse.Error.INCORRECT_TYPE,
-          'there can only be one geopoint field in a class');
+        // Make sure all field validation operations run before we return.
+        // If not - we are continuing to run logic, but already provided response from the server.
+        return promise.then(() => {
+          return Promise.reject(new Parse.Error(Parse.Error.INCORRECT_TYPE,
+            'there can only be one geopoint field in a class'));
+        });
       }
       if (!expected) {
         continue;
@@ -752,6 +761,27 @@ function getObjectType(obj) {
   return 'object';
 }
 
+const nonFieldSchemaKeys = ['_id', '_metadata', '_client_permissions'];
+function mongoSchemaAPIResponseFields(schema) {
+  var fieldNames = Object.keys(schema).filter(key => nonFieldSchemaKeys.indexOf(key) === -1);
+  var response = fieldNames.reduce((obj, fieldName) => {
+    obj[fieldName] = mongoFieldTypeToSchemaAPIType(schema[fieldName])
+    return obj;
+  }, {});
+  response.ACL = {type: 'ACL'};
+  response.createdAt = {type: 'Date'};
+  response.updatedAt = {type: 'Date'};
+  response.objectId = {type: 'String'};
+  return response;
+}
+
+function mongoSchemaToSchemaAPIResponse(schema) {
+  return {
+    className: schema._id,
+    fields: mongoSchemaAPIResponseFields(schema),
+  };
+}
+
 module.exports = {
   load: load,
   classNameIsValid: classNameIsValid,
@@ -760,4 +790,5 @@ module.exports = {
   schemaAPITypeToMongoFieldType: schemaAPITypeToMongoFieldType,
   buildMergedSchemaObject: buildMergedSchemaObject,
   mongoFieldTypeToSchemaAPIType: mongoFieldTypeToSchemaAPIType,
+  mongoSchemaToSchemaAPIResponse,
 };
diff --git a/src/cloud-code/httpRequest.js b/src/cloud-code/httpRequest.js
index 4e8ff654..35af79ca 100644
--- a/src/cloud-code/httpRequest.js
+++ b/src/cloud-code/httpRequest.js
@@ -1,4 +1,5 @@
 var request = require("request"),
+  querystring = require('querystring'),
   Parse = require('parse/node').Parse;
 
 var encodeBody = function(body, headers = {}) {
@@ -34,7 +35,13 @@ module.exports = function(options) {
   options.body = encodeBody(options.body, options.headers);
   // set follow redirects to false by default
   options.followRedirect = options.followRedirects == true;
-  
+  // support params options
+  if (typeof options.params === 'object') {
+    options.qs = options.params;
+  } else if (typeof options.params === 'string') {
+    options.qs = querystring.parse(options.params);
+  }
+
   request(options, (error, response, body) => {
     if (error) {
       if (callbacks.error) {
diff --git a/src/index.js b/src/index.js
index 076035f8..131f1f69 100644
--- a/src/index.js
+++ b/src/index.js
@@ -24,6 +24,7 @@ import { FileLoggerAdapter }   from './Adapters/Logger/FileLoggerAdapter';
 import { FilesController }     from './Controllers/FilesController';
 import { FilesRouter }         from './Routers/FilesRouter';
 import { FunctionsRouter }     from './Routers/FunctionsRouter';
+import { GCSAdapter }          from './Adapters/Files/GCSAdapter';
 import { GlobalConfigRouter }  from './Routers/GlobalConfigRouter';
 import { GridStoreAdapter }    from './Adapters/Files/GridStoreAdapter';
 import { HooksController }     from './Controllers/HooksController';
@@ -133,7 +134,8 @@ function ParseServer({
   const filesControllerAdapter = loadAdapter(filesAdapter, () => {
     return new GridStoreAdapter(databaseURI);
   });
-  const pushControllerAdapter = loadAdapter(push, ParsePushAdapter);
+  // Pass the push options too as it works with the default
+  const pushControllerAdapter = loadAdapter(push && push.adapter, ParsePushAdapter, push);
   const loggerControllerAdapter = loadAdapter(loggerAdapter, FileLoggerAdapter);
   const emailControllerAdapter = loadAdapter(emailAdapter);
   // We pass the options and the base class for the adatper,
@@ -181,7 +183,7 @@ function ParseServer({
   var api = express();
   //api.use("/apps", express.static(__dirname + "/public"));
   // File handling needs to be before default middlewares are applied
-  api.use('/', new FilesRouter().getExpressRouter({
+  api.use('/', middlewares.allowCrossDomain, new FilesRouter().getExpressRouter({
     maxUploadSize: maxUploadSize
   }));
 
@@ -232,15 +234,18 @@ function ParseServer({
 
   api.use(middlewares.handleParseErrors);
 
-  process.on('uncaughtException', (err) => {
-    if( err.code === "EADDRINUSE" ) { // user-friendly message for this common error
-      console.log(`Unable to listen on port ${err.port}. The port is already in use.`);
-      process.exit(0);
-    }
-    else {
-      throw err;
-    }
-  });
+  //This causes tests to spew some useless warnings, so disable in test
+  if (!process.env.TESTING) {
+    process.on('uncaughtException', (err) => {
+      if( err.code === "EADDRINUSE" ) { // user-friendly message for this common error
+        console.log(`Unable to listen on port ${err.port}. The port is already in use.`);
+        process.exit(0);
+      }
+      else {
+        throw err;
+      }
+    });
+  }
   hooksController.load();
 
   return api;
@@ -255,4 +260,5 @@ function addParseCloud() {
 module.exports = {
   ParseServer: ParseServer,
   S3Adapter: S3Adapter,
+  GCSAdapter: GCSAdapter
 };
diff --git a/src/transform.js b/src/transform.js
index 8d75b58e..738f2453 100644
--- a/src/transform.js
+++ b/src/transform.js
@@ -412,6 +412,7 @@ function transformConstraint(constraint, inArray) {
     case '$gte':
     case '$exists':
     case '$ne':
+    case '$eq':
       answer[key] = transformAtom(constraint[key], true,
                                   {inArray: inArray});
       break;