Hibernate example source code file (SchemaValidator.java)

This example Hibernate source code file (SchemaValidator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

basicserviceregistryimpl, configuration, configuration, databasemetadata, exception, fileinputstream, hibernateexception, hibernateexception, io, jdbc, properties, properties, schemavalidator, schemavalidator, serviceregistrybuilder, sql, sqlexception, util

The Hibernate SchemaValidator.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.tool.hbm2ddl;

import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

import org.jboss.logging.Logger;

import org.hibernate.HibernateException;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.cfg.NamingStrategy;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.jdbc.spi.JdbcServices;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.internal.util.config.ConfigurationHelper;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.hibernate.service.internal.BasicServiceRegistryImpl;

/**
 * A commandline tool to update a database schema. May also be called from
 * inside an application.
 *
 * @author Christoph Sturm
 */
public class SchemaValidator {
    private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, SchemaValidator.class.getName());

	private ConnectionHelper connectionHelper;
	private Configuration configuration;
	private Dialect dialect;

	public SchemaValidator(Configuration cfg) throws HibernateException {
		this( cfg, cfg.getProperties() );
	}

	public SchemaValidator(Configuration cfg, Properties connectionProperties) throws HibernateException {
		this.configuration = cfg;
		dialect = Dialect.getDialect( connectionProperties );
		Properties props = new Properties();
		props.putAll( dialect.getDefaultProperties() );
		props.putAll( connectionProperties );
		connectionHelper = new ManagedProviderConnectionHelper( props );
	}

	public SchemaValidator(ServiceRegistry serviceRegistry, Configuration cfg ) throws HibernateException {
		this.configuration = cfg;
		final JdbcServices jdbcServices = serviceRegistry.getService( JdbcServices.class );
		this.dialect = jdbcServices.getDialect();
		this.connectionHelper = new SuppliedConnectionProviderConnectionHelper( jdbcServices.getConnectionProvider() );
	}

	private static BasicServiceRegistryImpl createServiceRegistry(Properties properties) {
		Environment.verifyProperties( properties );
		ConfigurationHelper.resolvePlaceHolders( properties );
		return (BasicServiceRegistryImpl) new ServiceRegistryBuilder( properties ).buildServiceRegistry();
	}

	public static void main(String[] args) {
		try {
			Configuration cfg = new Configuration();

			String propFile = null;

			for ( int i = 0; i < args.length; i++ ) {
				if ( args[i].startsWith( "--" ) ) {
					if ( args[i].startsWith( "--properties=" ) ) {
						propFile = args[i].substring( 13 );
					}
					else if ( args[i].startsWith( "--config=" ) ) {
						cfg.configure( args[i].substring( 9 ) );
					}
					else if ( args[i].startsWith( "--naming=" ) ) {
						cfg.setNamingStrategy(
								( NamingStrategy ) ReflectHelper.classForName( args[i].substring( 9 ) ).newInstance()
						);
					}
				}
				else {
					cfg.addFile( args[i] );
				}

			}

			if ( propFile != null ) {
				Properties props = new Properties();
				props.putAll( cfg.getProperties() );
				props.load( new FileInputStream( propFile ) );
				cfg.setProperties( props );
			}

			BasicServiceRegistryImpl serviceRegistry = createServiceRegistry( cfg.getProperties() );
			try {
				new SchemaValidator( serviceRegistry, cfg ).validate();
			}
			finally {
				serviceRegistry.destroy();
			}
		}
		catch ( Exception e ) {
            LOG.unableToRunSchemaUpdate(e);
			e.printStackTrace();
		}
	}

	/**
	 * Perform the validations.
	 */
	public void validate() {

        LOG.runningSchemaValidator();

		Connection connection = null;

		try {

			DatabaseMetadata meta;
			try {
                LOG.fetchingDatabaseMetadata();
				connectionHelper.prepare( false );
				connection = connectionHelper.getConnection();
				meta = new DatabaseMetadata( connection, dialect, false );
			}
			catch ( SQLException sqle ) {
                LOG.unableToGetDatabaseMetadata(sqle);
				throw sqle;
			}

			configuration.validateSchema( dialect, meta );

		}
		catch ( SQLException e ) {
            LOG.unableToCompleteSchemaValidation(e);
		}
		finally {

			try {
				connectionHelper.release();
			}
			catch ( Exception e ) {
                LOG.unableToCloseConnection(e);
			}

		}
	}
}