Page Speed Optimization Libraries  1.3.25.1
net/instaweb/util/public/delegating_cache_callback.h
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00001 /*
00002  * Copyright 2012 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00019 
00020 #ifndef NET_INSTAWEB_UTIL_PUBLIC_DELEGATING_CACHE_CALLBACK_H_
00021 #define NET_INSTAWEB_UTIL_PUBLIC_DELEGATING_CACHE_CALLBACK_H_
00022 
00023 #include "net/instaweb/util/public/basictypes.h"
00024 #include "net/instaweb/util/public/cache_interface.h"
00025 #include "net/instaweb/util/public/string.h"
00026 
00027 namespace net_instaweb {
00028 
00031 class DelegatingCacheCallback : public CacheInterface::Callback {
00032  public:
00033   explicit DelegatingCacheCallback(CacheInterface::Callback* callback);
00034   virtual ~DelegatingCacheCallback();
00035 
00039   virtual bool ValidateCandidate(const GoogleString& key,
00040                                  CacheInterface::KeyState state);
00041 
00042   virtual void Done(CacheInterface::KeyState state);
00043 
00044  private:
00045   CacheInterface::Callback* callback_;
00046   bool validate_candidate_called_;
00047 
00048   DISALLOW_COPY_AND_ASSIGN(DelegatingCacheCallback);
00049 };
00050 
00051 }  
00052 
00053 #endif  ///< NET_INSTAWEB_UTIL_PUBLIC_DELEGATING_CACHE_CALLBACK_H_
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