org.jasig.portlet.calendar.hibernate.ApplicationContextConnectionProvider.java Source code

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Here is the source code for org.jasig.portlet.calendar.hibernate.ApplicationContextConnectionProvider.java

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/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you 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 the following location:
 *
 *   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.jasig.portlet.calendar.hibernate;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.log4j.Logger;
import org.hibernate.HibernateException;
import org.hibernate.connection.ConnectionProvider;
import org.jasig.portlet.calendar.spring.PortletApplicationContextLocator;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;

/**
 * When the hibernate3-maven-plugin:hbm2ddl goal is executed <em>via Maven</em>, this class provides
 * connections from the Spring ApplicationContext, which is capable of using encrypted database
 * connection settings.  This class is not necessary for Gradle-based database initialization via
 * uPortal-start.  It is therefore DEPRECATED.
 *
 * @author drewwills
 */
@Deprecated
public class ApplicationContextConnectionProvider implements ConnectionProvider {

    private static final String DATA_SOURCE_BEAN_NAME = "dataSource";

    private ApplicationContext context;

    private final Logger logger = Logger.getLogger(getClass());

    @Override
    public void close() throws HibernateException {
        if (context != null) {
            ((ConfigurableApplicationContext) context).close();
        }
    }

    @Override
    public void closeConnection(Connection conn) throws SQLException {
        conn.close();
    }

    @Override
    public void configure(Properties props) throws HibernateException {
        /*
         * Configuration is handled by the ApplicationContext itself;  there is
         * nothing to do here.
         */
    }

    @Override
    public Connection getConnection() throws SQLException {

        if (context == null) {
            init();
        }

        final DataSource dataSource = context.getBean(DATA_SOURCE_BEAN_NAME, DataSource.class);
        final Connection rslt = dataSource.getConnection();
        logger.info("Providing the following connection to hbm2ddl:  " + rslt);
        return rslt;
    }

    @Override
    public boolean supportsAggressiveRelease() {
        return false; // WTF?
    }

    /*
     * Implementation
     */

    private synchronized void init() {

        if (context != null) {
            // Already done...
            return;
        }

        try {
            context = PortletApplicationContextLocator
                    .getApplicationContext(PortletApplicationContextLocator.DATABASE_CONTEXT_LOCATION);
        } catch (Exception e) {
            logger.error("Unable to load the application context from "
                    + PortletApplicationContextLocator.DATABASE_CONTEXT_LOCATION, e);
        }
    }
}