Adding Mongodb element to add arrayMatches the parse-community#4762 (parse-community#4766)

* Adding elemMatch and nor

* lint

* adding test

* adding edge test

* postgres support

* clean up

* empty test

Author: jeremypiednoel

spec/ParseQuery.spec.js

@@ -754,6 +754,109 @@ describe('Parse.Query testing', () => {
       });
   });
 
+  it('containedBy pointer array', (done) => {
+    const objects = Array.from(Array(10).keys()).map((idx) => {
+      const obj = new Parse.Object('Object');
+      obj.set('key', idx);
+      return obj;
+    });
+
+    const parent = new Parse.Object('Parent');
+    const parent2 = new Parse.Object('Parent');
+    const parent3 = new Parse.Object('Parent');
+
+    Parse.Object.saveAll(objects).then(() => {
+      // [0, 1, 2]
+      parent.set('objects', objects.slice(0, 3));
+
+      const shift = objects.shift();
+      // [2, 0]
+      parent2.set('objects', [objects[1], shift]);
+
+      // [1, 2, 3, 4]
+      parent3.set('objects', objects.slice(1, 4));
+
+      return Parse.Object.saveAll([parent, parent2, parent3]);
+    }).then(() => {
+      // [1, 2, 3, 4, 5, 6, 7, 8, 9]
+      const pointers =  objects.map(object => object.toPointer());
+
+      // Return all Parent where all parent.objects are contained in objects
+      return rp.get({
+        url: Parse.serverURL + "/classes/Parent",
+        json: {
+          where: {
+            objects: {
+              $containedBy: pointers
+            }
+          }
+        },
+        headers: {
+          'X-Parse-Application-Id': Parse.applicationId,
+          'X-Parse-Javascript-Key': Parse.javaScriptKey
+        }
+      });
+    }).then((results) => {
+      expect(results.results[0].objectId).not.toBeUndefined();
+      expect(results.results[0].objectId).toBe(parent3.id);
+      expect(results.results.length).toBe(1);
+      done();
+    });
+  });
+
+
+  it('containedBy number array', (done) => {
+    const options = Object.assign({}, masterKeyOptions, {
+      body: {
+        where: { numbers: { $containedBy: [1, 2, 3, 4, 5, 6, 7, 8, 9] } },
+      }
+    });
+    const obj1 = new TestObject({ numbers: [0, 1, 2] });
+    const obj2 = new TestObject({ numbers: [2, 0] });
+    const obj3 = new TestObject({ numbers: [1, 2, 3, 4] });
+    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
+      return rp.get(Parse.serverURL + "/classes/TestObject", options);
+    }).then((results) => {
+      expect(results.results[0].objectId).not.toBeUndefined();
+      expect(results.results[0].objectId).toBe(obj3.id);
+      expect(results.results.length).toBe(1);
+      done();
+    });
+  });
+
+  it('containedBy empty array', (done) => {
+    const options = Object.assign({}, masterKeyOptions, {
+      body: {
+        where: { numbers: { $containedBy: [] } },
+      }
+    });
+    const obj1 = new TestObject({ numbers: [0, 1, 2] });
+    const obj2 = new TestObject({ numbers: [2, 0] });
+    const obj3 = new TestObject({ numbers: [1, 2, 3, 4] });
+    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
+      return rp.get(Parse.serverURL + "/classes/TestObject", options);
+    }).then((results) => {
+      expect(results.results.length).toBe(0);
+      done();
+    });
+  });
+
+  it('containedBy invalid query', (done) => {
+    const options = Object.assign({}, masterKeyOptions, {
+      body: {
+        where: { objects: { $containedBy: 1234 } },
+      }
+    });
+    const obj = new TestObject();
+    obj.save().then(() => {
+      return rp.get(Parse.serverURL + "/classes/TestObject", options);
+    }).then(done.fail).catch((error) => {
+      equal(error.error.code, Parse.Error.INVALID_JSON);
+      equal(error.error.error, 'bad $containedBy: should be an array');
+      done();
+    });
+  });
+
   const BoxedNumber = Parse.Object.extend({
     className: "BoxedNumber"
   });

src/Adapters/Storage/Mongo/MongoTransform.js

@@ -290,6 +290,9 @@ function transformQueryKeyValue(className, key, value, schema) {
     if (transformedConstraint.$text) {
       return {key: '$text', value: transformedConstraint.$text};
     }
+    if (transformedConstraint.$elemMatch) {
+      return { key: '$nor', value: [{ [key]: transformedConstraint }] };
+    }
     return {key, value: transformedConstraint};
   }
 
@@ -797,6 +800,19 @@ function transformConstraint(constraint, field) {
       answer[key] = s;
       break;
 
+    case '$containedBy': {
+      const arr = constraint[key];
+      if (!(arr instanceof Array)) {
+        throw new Parse.Error(
+          Parse.Error.INVALID_JSON,
+          `bad $containedBy: should be an array`
+        );
+      }
+      answer.$elemMatch = {
+        $nin: arr.map(transformer)
+      };
+      break;
+    }
     case '$options':
       answer[key] = constraint[key];
       break;

src/Adapters/Storage/Postgres/PostgresStorageAdapter.js

@@ -446,6 +446,20 @@ const buildWhereClause = ({ schema, query, index }): WhereClause => {
       index += 1;
     }
 
+    if (fieldValue.$containedBy) {
+      const arr = fieldValue.$containedBy;
+      if (!(arr instanceof Array)) {
+        throw new Parse.Error(
+          Parse.Error.INVALID_JSON,
+          `bad $containedBy: should be an array`
+        );
+      }
+
+      patterns.push(`$${index}:name <@ $${index + 1}::jsonb`);
+      values.push(fieldName, JSON.stringify(arr));
+      index += 2;
+    }
+
     if (fieldValue.$text) {
       const search = fieldValue.$text.$search;
       let language = 'english';