Merge pull request #141 from cnblogs/implement-RemoveMultiAsync

Implement RemoveMultiAsync

Author: cnblogs-dudu

Enyim.Caching/IMemcachedClient.cs

@@ -73,6 +73,7 @@ public interface IMemcachedClient : IDisposable
 
         bool Remove(string key);
         Task<bool> RemoveAsync(string key);
+        Task<bool> RemoveMultiAsync(params string[] keys);
 
         void FlushAll();
         Task FlushAllAsync();

Enyim.Caching/MemcachedClient.cs

@@ -1055,12 +1055,35 @@ public bool Remove(string key)
             return ExecuteRemove(key).Success;
         }
 
-        //TODO: Not Implement
         public async Task<bool> RemoveAsync(string key)
         {
             return (await ExecuteRemoveAsync(key)).Success;
         }
 
+        public async Task<bool> RemoveMultiAsync(params string[] keys)
+        {
+            if (keys.Length > 0)
+            {
+                var tasks = new Task<IRemoveOperationResult>[keys.Length];
+
+                for (var i = 0; i < keys.Length; i++)
+                {
+                    tasks[i] = ExecuteRemoveAsync(keys[i]);
+                }
+
+                await Task.WhenAll(tasks);
+
+                foreach (var task in tasks)
+                {
+                    if (!(await task).Success) return false;
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
         /// <summary>
         /// Retrieves multiple items from the cache.
         /// </summary>
@@ -1416,20 +1439,20 @@ void IDistributedCache.Remove(string key)
 
 #region [ License information          ]
 /* ************************************************************
- * 
+ *
  *    Copyright (c) 2010 Attila Kisk? enyim.com
- *    
+ *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
  *    You may obtain a copy of the License at
- *    
+ *
  *        http://www.apache.org/licenses/LICENSE-2.0
- *    
+ *
  *    Unless required by applicable law or agreed to in writing, software
  *    distributed under the License is distributed on an "AS IS" BASIS,
  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
- *    
+ *
  * ************************************************************/
 #endregion

Enyim.Caching/MemcachedClientT.cs

@@ -210,6 +210,11 @@ public Task<bool> RemoveAsync(string key)
             return _memcachedClient.RemoveAsync(key);
         }
 
+        public Task<bool> RemoveMultiAsync(params string[] keys)
+        {
+            return _memcachedClient.RemoveMultiAsync(keys);
+        }
+
         public bool Replace(string key, object value, int cacheSeconds)
         {
             return _memcachedClient.Replace(key, value, cacheSeconds);

Enyim.Caching/NullMemcachedClient.cs

@@ -184,7 +184,12 @@ public bool Remove(string key)
 
         public Task<bool> RemoveAsync(string key)
         {
-            return Task.FromResult<bool>(false);
+            return Task.FromResult(false);
+        }
+
+        public Task<bool> RemoveMultiAsync(params string[] keys)
+        {
+            return Task.FromResult(false);
         }
 
         public ServerStats Stats()