/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.cmp.ejbql;
import org.jboss.ejb.plugins.cmp.jdbc.JDBCResultSetReader;
import org.jboss.logging.Logger;
import java.sql.SQLException;
import java.sql.ResultSet;
/**
* This abstract syntax node represents a locate function.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @author <a href="mailto:alex@jboss.org">Alex Loubyansky</a>
* @version $Revision: 81030 $
*/
public final class ASTLocate
extends SimpleNode
implements SelectFunction
{
private final Logger log;
public ASTLocate(int id)
{
super(id);
log = Logger.getLogger(getClass());
}
/** Accept the visitor. **/
public Object jjtAccept(JBossQLParserVisitor visitor, Object data)
{
return visitor.visit(this, data);
}
/**
* Reads results.
* @param rs the result set to read from.
* @return the result of the function
* @throws SQLException
*/
public Object readResult(ResultSet rs) throws SQLException
{
return JDBCResultSetReader.LONG_READER.get(rs, 1, Long.class, log);
}
}