/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.repo.domain.control;

import java.sql.Savepoint;

/**
 * Abstract implementation for connection controlling DAO.
 * <p>
 * Provides any basic logic.
 * 
 * @author Derek Hulley
 * @since 3.2SP1
 */
public abstract class AbstractControlDAOImpl implements ControlDAO
{
    /**
     * @return              Returns <tt>null</tt> by default i.e. not supported
     */
    @Override
    public Savepoint createSavepoint(String savepoint)
    {
        return null;
    }

    /** No-op */
    @Override
    public void rollbackToSavepoint(Savepoint savepoint)
    {
    }

    /** No-op */
    @Override
    public void releaseSavepoint(Savepoint savepoint)
    {
    }

    @Override
    public int setTransactionIsolationLevel(int isolationLevel)
    {
        throw new UnsupportedOperationException("Method not implemented by the DAO");
    }
}