Source/modules/webdatabase/SQLTransactionBackendSync.h

/*
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 * Copyright (C) 2013 Apple Inc. All rights reserved.
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#ifndef SQLTransactionBackendSync_h
#define SQLTransactionBackendSync_h

#include "modules/webdatabase/DatabaseBasicTypes.h"
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/RefCounted.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"

namespace blink {

class DatabaseSync;
class SQLResultSet;
class SQLTransactionClient;
class SQLTransactionSyncCallback;
class SQLValue;
class SQLiteTransaction;
class ExceptionState;

// Instances of this class should be created and used only on the worker's context thread.
class SQLTransactionBackendSync : public RefCountedWillBeGarbageCollectedFinalized<SQLTransactionBackendSync> {
public:
    virtual ~SQLTransactionBackendSync();
    void trace(Visitor*);

    PassRefPtrWillBeRawPtr<SQLResultSet> executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments, ExceptionState&);

    DatabaseSync* database() { return m_database.get(); }

    void begin(ExceptionState&);
    void execute(ExceptionState&);
    void commit(ExceptionState&);
    void rollback();
    void rollbackIfInProgress();

private:
    SQLTransactionBackendSync(DatabaseSync*, PassOwnPtr<SQLTransactionSyncCallback>, bool readOnly);

    RefPtrWillBeMember<DatabaseSync> m_database;
    OwnPtr<SQLTransactionSyncCallback> m_callback;
    bool m_readOnly;
    bool m_hasVersionMismatch;

    bool m_modifiedDatabase;
    OwnPtr<SQLTransactionClient> m_transactionClient;
    OwnPtr<SQLiteTransaction> m_sqliteTransaction;

    friend class SQLTransactionSync; // FIXME: Remove this once the front-end has been properly isolated.
};

} // namespace blink

#endif // SQLTransactionBackendSync_h