/*
* 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.jackrabbit.core.query.lucene.constraint;
import java.io.IOException;
import org.apache.jackrabbit.core.query.lucene.ScoreNode;
import org.apache.jackrabbit.spi.Name;
/**
* <code>NotConstraint</code> implements a NOT constraint.
*/
public class NotConstraint implements Constraint {
/**
* The single operand.
*/
private final Constraint constraint;
/**
* Creates a new NOT constraint with the given <code>constraint</code> as
* its operand.
*
* @param constraint the operand.
*/
public NotConstraint(Constraint constraint) {
this.constraint = constraint;
}
/**
* {@inheritDoc}
*/
public boolean evaluate(ScoreNode[] row,
Name[] selectorNames,
EvaluationContext context)
throws IOException {
return !constraint.evaluate(row, selectorNames, context);
}
}