Source/modules/webdatabase/DatabaseSync.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 */

#ifndef DatabaseSync_h
#define DatabaseSync_h

#include "bindings/v8/ScriptWrappable.h"
#include "modules/webdatabase/DatabaseBackendSync.h"
#include "modules/webdatabase/DatabaseBase.h"
#include "modules/webdatabase/DatabaseBasicTypes.h"
#include "wtf/Forward.h"
#include "wtf/text/WTFString.h"

#ifndef NDEBUG
#include "weborigin/SecurityOrigin.h"
#endif

namespace WebCore {

class DatabaseCallback;
class ExceptionState;
class SQLTransactionSync;
class SQLTransactionSyncCallback;
class SecurityOrigin;

// Instances of this class should be created and used only on the worker's context thread.
class DatabaseSync : public DatabaseBase, public DatabaseBackendSync, public ScriptWrappable {
public:
    virtual ~DatabaseSync();

    void changeVersion(const String& oldVersion, const String& newVersion, PassRefPtr<SQLTransactionSyncCallback>, ExceptionState&);
    void transaction(PassRefPtr<SQLTransactionSyncCallback>, ExceptionState&);
    void readTransaction(PassRefPtr<SQLTransactionSyncCallback>, ExceptionState&);

    virtual void markAsDeletedAndClose();
    virtual void closeImmediately();

    const String& lastErrorMessage() const { return m_lastErrorMessage; }
    void setLastErrorMessage(const String& message) { m_lastErrorMessage = message; }
    void setLastErrorMessage(const char* message, int sqliteCode)
    {
        setLastErrorMessage(String::format("%s (%d)", message, sqliteCode));
    }
    void setLastErrorMessage(const char* message, int sqliteCode, const char* sqliteMessage)
    {
        setLastErrorMessage(String::format("%s (%d, %s)", message, sqliteCode, sqliteMessage));
    }

private:
    DatabaseSync(PassRefPtr<DatabaseBackendContext>, const String& name,
        const String& expectedVersion, const String& displayName, unsigned long estimatedSize);
    PassRefPtr<DatabaseBackendSync> backend();
    static PassRefPtr<DatabaseSync> create(ScriptExecutionContext*, PassRefPtr<DatabaseBackendBase>);

    void runTransaction(PassRefPtr<SQLTransactionSyncCallback>, bool readOnly, ExceptionState&);
    void rollbackTransaction(PassRefPtr<SQLTransactionSync>);

    String m_lastErrorMessage;

    friend class DatabaseManager;
    friend class DatabaseServer; // FIXME: remove this when the backend has been split out.
};

} // namespace WebCore

#endif