org.apache.cayenne.ejbql.parser.EJBQLIsNull Maven / Gradle / Ivy
/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.ejbql.parser;
import org.apache.cayenne.ejbql.EJBQLExpressionVisitor;
/**
* @since 3.0
*/
public class EJBQLIsNull extends SimpleNode {
public EJBQLIsNull(int id) {
super(id);
}
@Override
protected boolean visitNode(EJBQLExpressionVisitor visitor) {
return visitor.visitIsNull(this, -1);
}
@Override
protected boolean visitChild(EJBQLExpressionVisitor visitor, int childIndex) {
return super.visitChild(visitor, childIndex)
&& visitor.visitIsNull(this, childIndex);
}
}