LinkStore.h

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00001 /*
00002  *    Copyright 2004-2006 Intel Corporation
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 
00017 #ifndef _LINK_STORE_H_
00018 #define _LINK_STORE_H_
00019 
00020 #include <oasys/debug/DebugUtils.h>
00021 #include <oasys/serialize/TypeShims.h>
00022 #include <oasys/storage/InternalKeyDurableTable.h>
00023 
00024 namespace dtn {
00025 
00026 class Link;
00027 
00032 typedef oasys::InternalKeyDurableTable<
00033     oasys::StringShim, std::string, Link> LinkStoreImpl;
00034 
00038 class LinkStore : public LinkStoreImpl {
00039 public:
00043     static LinkStore* instance() {
00044         if (instance_ == NULL) {
00045             PANIC("LinkStore::init not called yet");
00046         }
00047         return instance_;
00048     }
00049 
00054     static int init(const oasys::StorageConfig& cfg,
00055                     oasys::DurableStore*        store) 
00056     {
00057         if (instance_ != NULL) {
00058             PANIC("LinkStore::init called multiple times");
00059         }
00060         instance_ = new LinkStore();
00061         return instance_->do_init(cfg, store);
00062     }
00063     
00067     LinkStore();
00068 
00072     static bool initialized() { return (instance_ != NULL); }
00073     
00074 protected:
00075     static LinkStore* instance_; 
00076 };
00077 
00078 } // namespace dtn
00079 
00080 #endif /* _LINK_STORE_H_ */

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