Source/WebCore/platform/leveldb/LevelDBWriteBatch.h

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
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#ifndef LevelDBWriteBatch_h
#define LevelDBWriteBatch_h

#if USE(LEVELDB)

#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>

namespace leveldb {
class WriteBatch;
}

namespace WebCore {

class LevelDBSlice;

// Wrapper around leveldb::WriteBatch.
// This class holds a collection of updates to apply atomically to a database.
class LevelDBWriteBatch {
public:
    static PassOwnPtr<LevelDBWriteBatch> create();
    ~LevelDBWriteBatch();

    void put(const LevelDBSlice& key, const LevelDBSlice& value);
    void remove(const LevelDBSlice& key); // Add remove operation to the batch.
    void clear();

private:
    friend class LevelDBDatabase;
    LevelDBWriteBatch();

    OwnPtr<leveldb::WriteBatch> m_writeBatch;
};

}

#endif // USE(LEVELDB)

#endif // LevelDBWriteBatch_h