/*
* 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 <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
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;
}
}