org.hibernate.criterion.PropertyProjection 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.criterion;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.type.Type;
/**
* A property value, or grouped property value
*
* @author Gavin King
* @author Steve Ebersole
*/
public class PropertyProjection extends SimpleProjection {
private String propertyName;
private boolean grouped;
protected PropertyProjection(String prop, boolean grouped) {
this.propertyName = prop;
this.grouped = grouped;
}
protected PropertyProjection(String prop) {
this( prop, false );
}
@Override
public boolean isGrouped() {
return grouped;
}
public String getPropertyName() {
return propertyName;
}
@Override
public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery) throws HibernateException {
return new Type[] { criteriaQuery.getType( criteria, propertyName ) };
}
@Override
public String toSqlString(Criteria criteria, int position, CriteriaQuery criteriaQuery) throws HibernateException {
final StringBuilder buf = new StringBuilder();
final String[] cols = criteriaQuery.getColumns( propertyName, criteria );
for ( int i=0; i