GraphQL: Allow true GraphQL Schema Customization (#6360)

* Allow real GraphQL Schema via ParseServer.start

* wip

* working

* tests ok

* add tests about enum/input use case

* Add async function based merge

* Better naming

* remove useless condition

src/GraphQL/loaders/defaultRelaySchema.js

@@ -30,7 +30,10 @@ const load = parseGraphQLSchema => {
             undefined,
             config,
             auth,
-            info
+            info,
+            parseGraphQLSchema.parseClasses.find(
+              ({ className }) => type === className
+            )
           )),
         };
       } catch (e) {

src/GraphQL/loaders/parseClassMutations.js

@@ -112,8 +112,12 @@ const load = function(
             include,
             ['id', 'objectId', 'createdAt', 'updatedAt']
           );
+          const needToGetAllKeys = objectsQueries.needToGetAllKeys(
+            parseClass.fields,
+            keys
+          );
           let optimizedObject = {};
-          if (needGet) {
+          if (needGet && !needToGetAllKeys) {
             optimizedObject = await objectsQueries.getObject(
               className,
               createdObject.objectId,
@@ -123,7 +127,21 @@ const load = function(
               undefined,
               config,
               auth,
-              info
+              info,
+              parseClass
+            );
+          } else if (needToGetAllKeys) {
+            optimizedObject = await objectsQueries.getObject(
+              className,
+              createdObject.objectId,
+              undefined,
+              include,
+              undefined,
+              undefined,
+              config,
+              auth,
+              info,
+              parseClass
             );
           }
           return {
@@ -212,9 +230,12 @@ const load = function(
             include,
             ['id', 'objectId', 'updatedAt']
           );
-
+          const needToGetAllKeys = objectsQueries.needToGetAllKeys(
+            parseClass.fields,
+            keys
+          );
           let optimizedObject = {};
-          if (needGet) {
+          if (needGet && !needToGetAllKeys) {
             optimizedObject = await objectsQueries.getObject(
               className,
               id,
@@ -224,7 +245,21 @@ const load = function(
               undefined,
               config,
               auth,
-              info
+              info,
+              parseClass
+            );
+          } else if (needToGetAllKeys) {
+            optimizedObject = await objectsQueries.getObject(
+              className,
+              id,
+              undefined,
+              include,
+              undefined,
+              undefined,
+              config,
+              auth,
+              info,
+              parseClass
             );
           }
           return {
@@ -301,7 +336,8 @@ const load = function(
               undefined,
               config,
               auth,
-              info
+              info,
+              parseClass
             );
           }
           await objectsMutations.deleteObject(

src/GraphQL/loaders/parseClassQueries.js

@@ -14,7 +14,7 @@ const getParseClassQueryConfig = function(
   return (parseClassConfig && parseClassConfig.query) || {};
 };
 
-const getQuery = async (className, _source, args, context, queryInfo) => {
+const getQuery = async (parseClass, _source, args, context, queryInfo) => {
   let { id } = args;
   const { options } = args;
   const { readPreference, includeReadPreference } = options || {};
@@ -23,14 +23,14 @@ const getQuery = async (className, _source, args, context, queryInfo) => {
 
   const globalIdObject = fromGlobalId(id);
 
-  if (globalIdObject.type === className) {
+  if (globalIdObject.type === parseClass.className) {
     id = globalIdObject.id;
   }
 
   const { keys, include } = extractKeysAndInclude(selectedFields);
 
   return await objectsQueries.getObject(
-    className,
+    parseClass.className,
     id,
     keys,
     include,
@@ -38,7 +38,8 @@ const getQuery = async (className, _source, args, context, queryInfo) => {
     includeReadPreference,
     config,
     auth,
-    info
+    info,
+    parseClass
   );
 };
 
@@ -79,7 +80,7 @@ const load = function(
       ),
       async resolve(_source, args, context, queryInfo) {
         try {
-          return await getQuery(className, _source, args, context, queryInfo);
+          return await getQuery(parseClass, _source, args, context, queryInfo);
         } catch (e) {
           parseGraphQLSchema.handleError(e);
         }

src/GraphQL/loaders/parseClassTypes.js

@@ -436,7 +436,7 @@ const load = (
                 );
                 const parseOrder = order && order.join(',');
 
-                return await objectsQueries.findObjects(
+                return objectsQueries.findObjects(
                   source[field].className,
                   {
                     $relatedTo: {