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* Copyright (C) 2011 Google Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef LevelDBDatabase_h
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#define LevelDBDatabase_h
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#include <wtf/OwnPtr.h>
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#include <wtf/PassOwnPtr.h>
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#include <wtf/Vector.h>
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#include <wtf/text/WTFString.h>
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class LevelDBComparator;
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class LevelDBDatabase;
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class LevelDBIterator;
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class LevelDBWriteBatch;
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class LevelDBSnapshot {
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friend class LevelDBDatabase;
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friend class LevelDBTransaction;
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explicit LevelDBSnapshot(LevelDBDatabase*);
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const leveldb::Snapshot* m_snapshot;
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class LevelDBDatabase {
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static PassOwnPtr<LevelDBDatabase> open(const String& fileName, const LevelDBComparator*);
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static PassOwnPtr<LevelDBDatabase> openInMemory(const LevelDBComparator*);
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static bool destroy(const String& fileName);
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bool put(const LevelDBSlice& key, const Vector<char>& value);
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bool remove(const LevelDBSlice& key);
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bool safeGet(const LevelDBSlice& key, Vector<char>& value, bool& found, const LevelDBSnapshot* = 0);
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bool write(LevelDBWriteBatch&);
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PassOwnPtr<LevelDBIterator> createIterator(const LevelDBSnapshot* = 0);
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const LevelDBComparator* comparator() const;
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friend class LevelDBSnapshot;
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OwnPtr<leveldb::Env> m_env;
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OwnPtr<leveldb::Comparator> m_comparatorAdapter;
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OwnPtr<leveldb::DB> m_db;
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const LevelDBComparator* m_comparator;