* ObjectControllerTests.cs: chore: 增加根据条件更新 Object

* ObjectTest.cs:
* AVObject.cs:
* AVObjectController.cs:

Storage/Storage.Test/ObjectControllerTests.cs

@@ -23,6 +23,16 @@ namespace LeanCloudTests {
             Assert.NotNull(obj.UpdatedAt);
         }
 
+        [Test]
+        public async Task SaveWithQuery() {
+            AVObject account = AVObject.CreateWithoutData("Account", "5d65fa5330863b008065e476");
+            AVQuery<AVObject> query = new AVQuery<AVObject>("Account");
+            query.WhereGreaterThan("balance", 80);
+            account["balance"] = 50;
+            await account.SaveAsync(query);
+            TestContext.Out.WriteLine($"balance: {account["balance"]}");
+        }
+
         [Test]
         public async Task Fetch() {
             AVObject obj = AVObject.CreateWithoutData("Todo", "5d5f6039d5de2b006cf29c8f");

Storage/Storage.Test/ObjectTest.cs

@@ -8,13 +8,7 @@ namespace LeanCloudTests {
     public class ObjectTests {
         [SetUp]
         public void SetUp() {
-            AVClient.Initialize(new AVClient.Configuration {
-                ApplicationId = "BMYV4RKSTwo8WSqt8q9ezcWF-gzGzoHsz",
-                ApplicationKey = "pbf6Nk5seyjilexdpyrPwjSp",
-                ApiServer = "https://avoscloud.com",
-                RTMServer = "https://router-g0-push.avoscloud.com",
-            });
-            AVClient.HttpLog(TestContext.Out.WriteLine);
+            Utils.InitNorthChina();
         }
 
         [Test]

Storage/Storage/Internal/Object/Controller/AVObjectController.cs

@@ -35,14 +35,24 @@ namespace LeanCloud.Storage.Internal {
 
         public Task<IObjectState> SaveAsync(IObjectState state,
             IDictionary<string, IAVFieldOperation> operations,
+            AVQuery<AVObject> query,
             string sessionToken,
             CancellationToken cancellationToken) {
             var objectJSON = AVObject.ToJSONObjectForSaving(operations);
+            
             var command = new AVCommand {
                 Path = state.ObjectId == null ? $"classes/{Uri.EscapeDataString(state.ClassName)}" : $"classes/{Uri.EscapeDataString(state.ClassName)}/{state.ObjectId}",
                 Method = state.ObjectId == null ? HttpMethod.Post : HttpMethod.Put,
                 Content = objectJSON
             };
+            // 查询条件
+            if (query != null && query.where != null) {
+                Dictionary<string, object> where = new Dictionary<string, object> {
+                    { "where", PointerOrLocalIdEncoder.Instance.Encode(query.where) }
+                };
+                string encode = AVClient.BuildQueryString(where);
+                command.Path = $"{command.Path}?{encode}";
+            }
             return AVPlugins.Instance.CommandRunner.RunCommandAsync<IDictionary<string, object>>(command, cancellationToken: cancellationToken).OnSuccess(t => {
                 var serverState = AVObjectCoder.Instance.Decode(t.Result.Item2, AVDecoder.Instance);
                 serverState = serverState.MutatedClone(mutableClone => {

Storage/Storage/Public/AVObject.cs

@@ -557,13 +557,12 @@ string propertyName
             }
         }
 
-        protected virtual Task SaveAsync(Task toAwait,
-            CancellationToken cancellationToken) {
+        public virtual Task SaveAsync(AVQuery<AVObject> query = null, CancellationToken cancellationToken = default) {
             IDictionary<string, IAVFieldOperation> currentOperations = null;
             if (!IsDirty) {
                 return Task.FromResult(0);
             }
-
+            
             Task deepSaveTask;
             string sessionToken;
             lock (mutex) {
@@ -576,10 +575,9 @@ string propertyName
             }
 
             return deepSaveTask.OnSuccess(_ => {
-                return toAwait;
-            }).Unwrap().OnSuccess(_ => {
                 return ObjectController.SaveAsync(state,
                     currentOperations,
+                    query,
                     sessionToken,
                     cancellationToken);
             }).Unwrap().ContinueWith(t => {
@@ -593,22 +591,6 @@ string propertyName
             }).Unwrap();
         }
 
-        /// <summary>
-        /// Saves this object to the server.
-        /// </summary>
-        public virtual Task SaveAsync() {
-            return SaveAsync(CancellationToken.None);
-        }
-
-        /// <summary>
-        /// Saves this object to the server.
-        /// </summary>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        public virtual Task SaveAsync(CancellationToken cancellationToken) {
-            return taskQueue.Enqueue(toAwait => SaveAsync(toAwait, cancellationToken),
-                cancellationToken);
-        }
-
         internal virtual Task<AVObject> FetchAsyncInternal(
               Task toAwait,
               IDictionary<string, object> queryString,