org.hibernate.transform.ToListResultTransformer Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.transform;
import java.util.Arrays;
import java.util.List;
/**
* Tranforms each result row from a tuple into a {@link List}, such that what
* you end up with is a {@link List} of {@link List Lists}.
*/
public class ToListResultTransformer extends BasicTransformerAdapter {
public static final ToListResultTransformer INSTANCE = new ToListResultTransformer();
/**
* Disallow instantiation of ToListResultTransformer.
*/
private ToListResultTransformer() {
}
/**
* {@inheritDoc}
*/
public Object transformTuple(Object[] tuple, String[] aliases) {
return Arrays.asList( tuple );
}
/**
* Serialization hook for ensuring singleton uniqueing.
*
* @return The singleton instance : {@link #INSTANCE}
*/
private Object readResolve() {
return INSTANCE;
}
}