org.springbyexample.jdbc.datasource.HsqldbInitializingDriverManagerDataSource.java Source code

Introduction

Here is the source code for org.springbyexample.jdbc.datasource.HsqldbInitializingDriverManagerDataSource.java

Source

/*
 * Copyright 2007-2009 the original author or authors.
 *
 * 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.
 */

package org.springbyexample.jdbc.datasource;

import java.sql.Driver;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;

/**
 * <p>HSQL DB specific initializing <code>DriverManagerDataSource</code>.
 * If values aren't set for driver class name, url, username, or password
 * defaults for an in memory HSQL DB are used.</p>
 *
 * <p>After the properties are set any database initialization scripts are run.
 * This is very useful for unit testing.</p>
 * 
 * <p> Spring configuration:</p>
 *
 * <pre>
 *   <bean id="dataSource"
 *       class="org.springbyexample.jdbc.datasource.HsqldbInitializingDriverManagerDataSource">
 *     <property name="sqlScriptProcessor">
 *         <bean class="org.springbyexample.jdbc.core.SqlScriptProcessor">
 *             <property name="charset" value="UTF-8" />
 *             <property name="sqlScripts">
 *                 <list>
 *                     <value>classpath:/schema-hsqldb.sql</value>
 *                 </list>
 *             </property>
 *         </bean>
 *     </property>
 *   </bean>
 * </pre>
 *
 * @author David Winterfeldt
 *
 * @see org.springframework.jdbc.datasource.SimpleDriverDataSource
 */
public class HsqldbInitializingDriverManagerDataSource extends InitializingDriverManagerDataSource
        implements InitializingBean {

    protected static String DRIVER_CLASS_NAME = "org.hsqldb.jdbcDriver";
    protected static String URL = "jdbc:hsqldb:mem:Test";
    protected static String USERNAME = "sa";
    protected static String PASSWORD = "";

    /**
     * Implementation of <code>InitializingBean</code>
     */
    @SuppressWarnings("unchecked")
    public void afterPropertiesSet() throws Exception {
        if (getDriver() == null && !StringUtils.hasText(driverClassName)) {
            setDriverClass((Class<? extends Driver>) ClassUtils.forName(DRIVER_CLASS_NAME,
                    ClassUtils.getDefaultClassLoader()));
        }

        if (!StringUtils.hasText(getUrl())) {
            setUrl(URL);
        }

        if (!StringUtils.hasText(getUsername())) {
            setUsername(USERNAME);
        }

        if (!StringUtils.hasText(getPassword())) {
            setPassword(PASSWORD);
        }

        super.afterPropertiesSet();
    }

}