/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed 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 net.ontopia.persistence.query.jdo;
/**
* INTERNAL: JDOQL logical expression: not (!). Syntax: '!( ... )'.
*/
public class JDONot implements JDOExpressionIF {
protected JDOExpressionIF expression;
public JDONot(JDOExpressionIF expression) {
if (expression == null)
throw new NullPointerException("Not expression must have nested expression.");
this.expression = expression;
}
public int getType() {
return NOT;
}
public JDOExpressionIF getExpression() {
return expression;
}
public int hashCode() {
return expression.hashCode();
}
public boolean equals(Object obj) {
if (obj instanceof JDONot) {
JDONot other = (JDONot)obj;
return expression.equals(other.getExpression());
}
return false;
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("!(");
sb.append(expression);
sb.append(")");
return sb.toString();
}
public void visit(JDOVisitorIF visitor) {
visitor.visitable(expression);
}
}