org.hibernate.persister.collection.ElementPropertyMapping 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.persister.collection;
import org.hibernate.MappingException;
import org.hibernate.QueryException;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.persister.entity.PropertyMapping;
import org.hibernate.type.Type;
/**
* @author Gavin King
*/
public class ElementPropertyMapping implements PropertyMapping {
private final String[] elementColumns;
private final Type type;
public ElementPropertyMapping(String[] elementColumns, Type type)
throws MappingException {
this.elementColumns = elementColumns;
this.type = type;
}
public Type toType(String propertyName) throws QueryException {
if ( propertyName==null || "id".equals(propertyName) ) {
return type;
}
else {
throw new QueryException("cannot dereference scalar collection element: " + propertyName);
}
}
public String[] toColumns(String alias, String propertyName) throws QueryException {
if (propertyName==null || "id".equals(propertyName) ) {
return StringHelper.qualify( alias, elementColumns );
}
else {
throw new QueryException("cannot dereference scalar collection element: " + propertyName);
}
}
/**
* Given a property path, return the corresponding column name(s).
*/
public String[] toColumns(String propertyName) throws QueryException, UnsupportedOperationException {
throw new UnsupportedOperationException( "References to collections must be define a SQL alias" );
}
public Type getType() {
return type;
}
}