/*
* 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.util.regex.Matcher;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import org.apache.jackrabbit.commons.query.qom.Operator;
import org.apache.jackrabbit.core.query.lucene.Util;
import org.apache.jackrabbit.spi.commons.query.qom.SelectorImpl;
/**
* <code>LikeConstraint</code> implements a like constraint.
*/
public class LikeConstraint extends ComparisonConstraint {
/**
* A regular expression matcher for the like constraint.
*/
private final Matcher matcher;
/**
* Creates a new like constraint.
*
* @param operand1 the dynamic operand.
* @param operand2 the static operand.
* @param selector the selector for the dynamic operand.
* @throws RepositoryException if an error occurs reading the string value
* from the static operand.
*/
public LikeConstraint(DynamicOperand operand1,
Value operand2,
SelectorImpl selector) throws RepositoryException {
super(operand1, Operator.LIKE, operand2, selector);
this.matcher = Util.createRegexp(operand2.getString()).matcher("");
}
/**
* {@inheritDoc}
*/
protected boolean evaluate(Value op1) throws RepositoryException {
return matcher.reset(op1.getString()).matches();
}
}
|