/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.service.jdbc.dialect.internal;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.service.classloading.spi.ClassLoaderService;
import org.hibernate.service.jdbc.dialect.spi.DialectResolver;
import org.hibernate.service.spi.BasicServiceInitiator;
import org.hibernate.service.spi.ServiceException;
import org.hibernate.service.spi.ServiceRegistryImplementor;
/**
* Standard initiator for the standard {@link DialectResolver} service
*
* @author Steve Ebersole
*/
public class DialectResolverInitiator implements BasicServiceInitiator<DialectResolver> {
public static final DialectResolverInitiator INSTANCE = new DialectResolverInitiator();
@Override
public Class<DialectResolver> getServiceInitiated() {
return DialectResolver.class;
}
@Override
public DialectResolver initiateService(Map configurationValues, ServiceRegistryImplementor registry) {
return new DialectResolverSet( determineResolvers( configurationValues, registry ) );
}
private List<DialectResolver> determineResolvers(Map configurationValues, ServiceRegistryImplementor registry) {
final List<DialectResolver> resolvers = new ArrayList<DialectResolver>();
final String resolverImplNames = (String) configurationValues.get( AvailableSettings.DIALECT_RESOLVERS );
if ( StringHelper.isNotEmpty( resolverImplNames ) ) {
final ClassLoaderService classLoaderService = registry.getService( ClassLoaderService.class );
for ( String resolverImplName : StringHelper.split( ", \n\r\f\t", resolverImplNames ) ) {
try {
resolvers.add( (DialectResolver) classLoaderService.classForName( resolverImplName ).newInstance() );
}
catch (HibernateException e) {
throw e;
}
catch (Exception e) {
throw new ServiceException( "Unable to instantiate named dialect resolver [" + resolverImplName + "]", e );
}
}
}
resolvers.add( new StandardDialectResolver() );
return resolvers;
}
}