package org.apache.torque.adapter;/* * Copyright 2001-2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License") * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *     http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */import java.sql.Connection;import java.sql.SQLException;/** * This DatabaseHandler is used when you do not have a database * installed. * * @author <a href="mailto:jon@clearink.com">Jon S. Stevens</a> * @author <a href="mailto:bmclaugh@algx.net">Brett McLaughlin</a> * @version $Id: DBNone.java,v 1.9 2005/01/31 19:43:55 tfischer Exp $ */public class DBNone extends DB{    /**     * Empty protected constructor.     */    protected DBNone()    {    }    /**     * @return null     */    public Connection getConnection()    {        return null;    }    /**     * This method is used to ignore case.     *     * @param in The string to transform to upper case.     * @return The upper case string.     */    public String toUpperCase(String in)    {        return in;    }    /**     * This method is used to ignore case.     *     * @param in The string whose case to ignore.     * @return The string in a case that can be ignored.     */    public String ignoreCase(String in)    {        return in;    }    /**     * @see org.apache.torque.adapter.DB#getIDMethodType()     */    public String getIDMethodType()    {        return NO_ID_METHOD;    }    /**     * @see org.apache.torque.adapter.DB#getIDMethodSQL(Object obj)     */    public String getIDMethodSQL(Object obj)    {        return null;    }    /**     * Locks the specified table.     *     * @param con The JDBC connection to use.     * @param table The name of the table to lock.     * @exception SQLException No Statement could be created or executed.     */    public void lockTable(Connection con, String table) throws SQLException    {    }    /**     * Unlocks the specified table.     *     * @param con The JDBC connection to use.     * @param table The name of the table to unlock.     * @exception SQLException No Statement could be created or executed.     */    public void unlockTable(Connection con, String table) throws SQLException    {    }}