LiveQuery should match subobjects with dot notation (#3322)

* LiveQuery should match subobjects with dot notation

* one additional test case

spec/QueryTools.spec.js

@@ -412,4 +412,66 @@ describe('matchesQuery', function() {
     expect(matchesQuery(caltrainStation, q)).toBe(false);
     expect(matchesQuery(santaClara, q)).toBe(false);
   });
+
+  it('matches on subobjects with dot notation', function() {
+    var message = {
+      id: new Id('Message', 'O1'),
+      text: "content",
+      status: {x: "read", y: "delivered"}
+    };
+
+    var q = new Parse.Query('Message');
+    q.equalTo("status.x", "read");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.equalTo("status.z", "read");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.equalTo("status.x", "delivered");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.notEqualTo("status.x", "read");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.notEqualTo("status.z", "read");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.notEqualTo("status.x", "delivered");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.exists("status.x");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.exists("status.z");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.exists("nonexistent.x");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.doesNotExist("status.x");
+    expect(matchesQuery(message, q)).toBe(false);
+
+    q = new Parse.Query('Message');
+    q.doesNotExist("status.z");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.doesNotExist("nonexistent.z");
+    expect(matchesQuery(message, q)).toBe(true);
+
+    q = new Parse.Query('Message');
+    q.equalTo("status.x", "read");
+    q.doesNotExist("status.y");
+    expect(matchesQuery(message, q)).toBe(false);
+
+  });
 });

src/LiveQuery/QueryTools.js

@@ -133,6 +133,13 @@ function matchesKeyConstraints(object, key, constraints) {
   if (constraints === null) {
     return false;
   }
+  if(key.indexOf(".") >= 0){
+    // Key references a subobject
+    var keyComponents = key.split(".");
+    var subObjectKey = keyComponents[0];
+    var keyRemainder = keyComponents.slice(1).join(".");
+    return matchesKeyConstraints(object[subObjectKey] || {}, keyRemainder, constraints);
+  }
   var i;
   if (key === '$or') {
     for (i = 0; i < constraints.length; i++) {