Add $relativeTime operator

Author: Marvel Mathew

spec/ParseQuery.spec.js

@@ -3123,23 +3123,23 @@ describe('Parse.Query testing', () => {
       .then(() => Parse.Object.saveAll([obj1, obj2]))
       .then(() => {
         const q = new Parse.Query('MyCustomObject');
-        q.greaterThan('ttl', 'in 1 day');
+        q.greaterThan('ttl', { $relativeTime: 'in 1 day' });
         return q.find({ useMasterKey: true });
       })
       .then((results) => {
         expect(results.length).toBe(1);
       })
       .then(() => {
         const q = new Parse.Query('MyCustomObject');
-        q.greaterThan('ttl', '1 day ago');
+        q.greaterThan('ttl', { $relativeTime: '1 day ago' });
         return q.find({ useMasterKey: true });
       })
       .then((results) => {
         expect(results.length).toBe(1);
       })
       .then(() => {
         const q = new Parse.Query('MyCustomObject');
-        q.lessThan('ttl', '5 days ago');
+        q.lessThan('ttl', { $relativeTime: '5 days ago' });
         return q.find({ useMasterKey: true });
       })
       .then((results) => {

src/Adapters/Storage/Mongo/MongoTransform.js

@@ -664,9 +664,9 @@ function transformConstraint(constraint, field) {
     case '$exists':
     case '$ne':
     case '$eq': {
-      const text = constraint[key];
-      if (typeof text === 'string') {
-        const parserResult = relativeTimeToDate(text);
+      const val = constraint[key];
+      if (typeof val === 'object' && val.$relativeTime) {
+        const parserResult = relativeTimeToDate(val.$relativeTime);
         if (parserResult.status === 'success') {
           answer[key] = parserResult.result;
           break;