add distinct

.gitignore

@@ -1,6 +1,6 @@
 .DS_Store
 .dart_tool/
-
+.history
 .packages
 .pub/
 pubspec.lock

lib/src/base/parse_constants.dart

@@ -15,6 +15,7 @@ const String keyEndPointVerificationEmail = '/verificationEmailRequest';
 const String keyEndPointRequestPasswordReset = '/requestPasswordReset';
 const String keyEndPointClasses = '/classes/';
 const String keyEndPointHealth = '/health';
+const String keyEndPointAggregate = '/aggregate/';
 
 // ParseObject variables
 const String keyVarClassName = 'className';

lib/src/network/parse_query.dart

@@ -246,7 +246,8 @@ class QueryBuilder<T extends ParseObject> {
   // Add a constraint to the query that requires a particular key's value match another QueryBuilder
   // ignore: always_specify_types
   void whereMatchesQuery(String column, QueryBuilder query) {
-    final String inQuery = query._buildQueryRelational(query.object.parseClassName);
+    final String inQuery =
+        query._buildQueryRelational(query.object.parseClassName);
 
     queries.add(MapEntry<String, dynamic>(
         _SINGLE_QUERY, '\"$column\":{\"\$inQuery\":$inQuery}'));
@@ -255,7 +256,8 @@ class QueryBuilder<T extends ParseObject> {
   //Add a constraint to the query that requires a particular key's value does not match another QueryBuilder
   // ignore: always_specify_types
   void whereDoesNotMatchQuery(String column, QueryBuilder query) {
-    final String inQuery = query._buildQueryRelational(query.object.parseClassName);
+    final String inQuery =
+        query._buildQueryRelational(query.object.parseClassName);
 
     queries.add(MapEntry<String, dynamic>(
         _SINGLE_QUERY, '\"$column\":{\"\$notInQuery\":$inQuery}'));
@@ -268,6 +270,11 @@ class QueryBuilder<T extends ParseObject> {
     return object.query(_buildQuery());
   }
 
+  Future<ParseResponse> distinct(String className) async {
+    String queryString = "distinct=$className";
+    return object.distinct(queryString);
+  }
+
   ///Counts the number of objects that match this query
   Future<ParseResponse> count() async {
     return object.query(_buildQueryCount());

lib/src/objects/parse_object.dart

@@ -12,6 +12,7 @@ class ParseObject extends ParseBase implements ParseCloneable {
       : super() {
     parseClassName = className;
     _path = '$keyEndPointClasses$className';
+    _aggregatepath = '$keyEndPointAggregate$className';
 
     _debug = isDebugEnabled(objectLevelDebug: debug);
     _client = client ??
@@ -28,6 +29,7 @@ class ParseObject extends ParseBase implements ParseCloneable {
       ParseObject.clone(parseClassName)..fromJson(map);
 
   String _path;
+  String _aggregatepath;
   bool _debug;
   ParseHTTPClient _client;
 
@@ -104,8 +106,7 @@ class ParseObject extends ParseBase implements ParseCloneable {
       if (response != null) {
         if (response.success) {
           _savingChanges.clear();
-        }
-        else {
+        } else {
           _revertSavingChanges();
         }
         return response;
@@ -175,8 +176,7 @@ class ParseObject extends ParseBase implements ParseCloneable {
             if (response.results[i] is ParseError) {
               // Batch request succeed, but part of batch failed.
               chunk[i]._revertSavingChanges();
-            }
-            else {
+            } else {
               chunk[i]._savingChanges.clear();
             }
           }
@@ -483,6 +483,17 @@ class ParseObject extends ParseBase implements ParseCloneable {
     }
   }
 
+  Future<ParseResponse> distinct(String query) async {
+    try {
+      final Uri url = getSanitisedUri(_client, '$_aggregatepath', query: query);
+      final Response result = await _client.get(url);
+      return handleResponse<ParseObject>(
+          this, result, ParseApiRQ.query, _debug, parseClassName);
+    } on Exception catch (e) {
+      return handleException(e, ParseApiRQ.query, _debug, parseClassName);
+    }
+  }
+
   /// Deletes the current object locally and online
   Future<ParseResponse> delete({String id, String path}) async {
     try {

lib/src/objects/response/parse_response_builder.dart

@@ -91,10 +91,16 @@ class _ParseResponseBuilder {
         response.result = map;
       } else if (map != null && map.length == 1 && map.containsKey('results')) {
         final List<dynamic> results = map['results'];
-        final List<T> items = _handleMultipleResults<T>(object, results);
-        response.results = items;
-        response.result = items;
-        response.count = items.length;
+        if (results[0] is String) {
+          response.results = results;
+          response.result = results;
+          response.count = results.length;
+        } else {
+          final List<T> items = _handleMultipleResults<T>(object, results);
+          response.results = items;
+          response.result = items;
+          response.count = items.length;
+        }
       } else if (map != null && map.length == 2 && map.containsKey('count')) {
         final List<int> results = <int>[map['count']];
         response.results = results;