/*
* Hibernate OGM, Domain model persistence for NoSQL datastores
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.ogm.service.impl;
import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
import org.hibernate.cfg.Configuration;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.metamodel.source.MetadataImplementor;
import org.hibernate.ogm.cfg.OgmProperties;
import org.hibernate.ogm.cfg.impl.InternalProperties;
import org.hibernate.ogm.datastore.spi.DatastoreProvider;
import org.hibernate.ogm.query.spi.QueryParserService;
import org.hibernate.ogm.util.configurationreader.spi.ConfigurationPropertyReader;
import org.hibernate.service.spi.ServiceRegistryImplementor;
import org.hibernate.service.spi.SessionFactoryServiceInitiator;
/**
* Initiator which contributes a {@link QueryParserService} implementation.
* <p>
* The implementation can be configured via {@link OgmProperties#QUERY_PARSER_SERVICE}. If no implementation is
* configured that way, the default implementation as retrieved from the current {@link DatastoreProvider} will be used.
*
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2012 Red Hat Inc.
* @author Gunnar Morling
*/
class QueryParserServicesInitiator implements SessionFactoryServiceInitiator<QueryParserService> {
public static final SessionFactoryServiceInitiator<QueryParserService> INSTANCE = new QueryParserServicesInitiator();
@Override
public Class<QueryParserService> getServiceInitiated() {
return QueryParserService.class;
}
@Override
public QueryParserService initiateService(SessionFactoryImplementor sessionFactory, Configuration configuration, ServiceRegistryImplementor registry) {
ConfigurationPropertyReader propertyReader = new ConfigurationPropertyReader( configuration, registry.getService( ClassLoaderService.class ) );
return propertyReader.property( InternalProperties.QUERY_PARSER_SERVICE, QueryParserService.class )
.instantiate()
.withDefaultImplementation( registry.getService( DatastoreProvider.class ).getDefaultQueryParserServiceType() )
.getValue();
}
@Override
public QueryParserService initiateService(SessionFactoryImplementor sessionFactory, MetadataImplementor metadata, ServiceRegistryImplementor registry) {
throw new UnsupportedOperationException( "Cannot create " + QueryParserService.class.getName() + " service using metadata" );
}
}