org.hibernate.hql.internal.ast.tree.CollectionFunction 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.hql.internal.ast.tree;
import antlr.SemanticException;
import antlr.collections.AST;
/**
* Represents 'elements()' or 'indices()'.
*
* @author josh
*/
public class CollectionFunction extends MethodNode implements DisplayableNode {
public void resolve(boolean inSelect) throws SemanticException {
initializeMethodNode( this, inSelect );
if ( !isCollectionPropertyMethod() ) {
throw new SemanticException( this.getText() + " is not a collection property name!" );
}
AST expr = getFirstChild();
if ( expr == null ) {
throw new SemanticException( this.getText() + " requires a path!" );
}
resolveCollectionProperty( expr );
}
protected void prepareSelectColumns(String[] selectColumns) {
// we need to strip off the embedded parens so that sql-gen does not double these up
String subselect = selectColumns[0].trim();
if ( subselect.startsWith( "(") && subselect.endsWith( ")" ) ) {
subselect = subselect.substring( 1, subselect.length() -1 );
}
selectColumns[0] = subselect;
}
}