org.hibernate.persister.collection.NamedQueryCollectionInitializer Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.persister.collection;
import java.io.Serializable;
import org.hibernate.FlushMode;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.internal.AbstractQueryImpl;
import org.hibernate.internal.CoreLogging;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.loader.collection.CollectionInitializer;
/**
* A wrapper around a named query.
*
* @author Gavin King
*/
public final class NamedQueryCollectionInitializer implements CollectionInitializer {
private static final CoreMessageLogger LOG = CoreLogging.messageLogger( NamedQueryCollectionInitializer.class );
private final String queryName;
private final CollectionPersister persister;
public NamedQueryCollectionInitializer(String queryName, CollectionPersister persister) {
super();
this.queryName = queryName;
this.persister = persister;
}
public void initialize(Serializable key, SessionImplementor session) throws HibernateException {
LOG.debugf( "Initializing collection: %s using named query: %s", persister.getRole(), queryName );
//TODO: is there a more elegant way than downcasting?
AbstractQueryImpl query = (AbstractQueryImpl) session.getNamedSQLQuery( queryName );
if ( query.getNamedParameters().length > 0 ) {
query.setParameter(
query.getNamedParameters()[0],
key,
persister.getKeyType()
);
}
else {
query.setParameter( 0, key, persister.getKeyType() );
}
query.setCollectionKey( key ).setFlushMode( FlushMode.MANUAL ).list();
}
}