/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010-2011, 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.ogm.id.impl;
import java.io.Serializable;
import java.util.Map;
import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.id.Configurable;
import org.hibernate.id.PersistentIdentifierGenerator;
import org.hibernate.internal.util.config.ConfigurationHelper;
import org.hibernate.type.Type;
/**
* <p>A JPA sequence-based identifier generator.</p>
* <p>This identifier generator is also used for
* JPA auto identifier generation.</p>
*
* Configuration parameters:
* <table>
* <tr>
* <td><b>NAME</b></td>
* <td><b>DESCRIPTION</b></td>
* </tr>
* <tr>
* <td>{@link org.hibernate.id.enhanced.SequenceStyleGenerator#SEQUENCE_PARAM}</td>
* <td>The name of the sequence to use store/retrieve sequence values</td>
* </tr>
* </table>
*
* @author Nabeel Ali Memon <nabeel@nabeelalimemon.com>
*/
public class OgmSequenceGenerator implements PersistentIdentifierGenerator, Configurable {
private final OgmTableGenerator tableGenerator;
public OgmSequenceGenerator() {
tableGenerator = new OgmTableGenerator();
}
/**
* {@inheritDoc}
*/
@Override
public void configure(Type type, Properties params, Dialect dialect) throws MappingException {
Properties newParams = new Properties( params );
for ( Map.Entry<Object, Object> param : params.entrySet() ) {
newParams.put( param.getKey(), param.getValue() );
}
newParams.setProperty(
OgmTableGenerator.SEGMENT_VALUE_PARAM,
ConfigurationHelper.getString(
OgmTableGenerator.SEGMENT_VALUE_PARAM,
newParams,
newParams.getProperty( PersistentIdentifierGenerator.TABLE )
)
);
tableGenerator.configure( type, newParams, dialect );
}
/**
* {@inheritDoc}
*/
@Override
public String[] sqlCreateStrings(Dialect dialect) throws HibernateException {
return new String[] { };
}
/**
* {@inheritDoc}
*/
@Override
public String[] sqlDropStrings(Dialect dialect) throws HibernateException {
return new String[] { };
}
/**
* {@inheritDoc}
*/
@Override
public Object generatorKey() {
return tableGenerator.getTableName();
}
/**
* {@inheritDoc}
*/
@Override
public Serializable generate(final SessionImplementor session, Object object) throws HibernateException {
return tableGenerator.generate( session, object );
}
}