org.archive.modules.deciderules.surt.NotOnHostsDecideRule Maven / Gradle / Ivy

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/*
 *  This file is part of the Heritrix web crawler (crawler.archive.org).
 *
 *  Licensed to the Internet Archive (IA) by one or more individual 
 *  contributors. 
 *
 *  The IA 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.archive.modules.deciderules.surt;

import org.archive.modules.CrawlURI;


/**
 * Rule applies configured decision to any URIs that
 * are *not* on one of the hosts in the configured set of
 * hosts, filled from the seed set. 
 *
 * @author gojomo
 */
public class NotOnHostsDecideRule extends OnHostsDecideRule {

    private static final long serialVersionUID = 1512825197255050412L;


    /**
     * Usual constructor. 
     */
    public NotOnHostsDecideRule() {
    }

    /**
     * Evaluate whether given object's URI is NOT in the set of
     * hosts -- simply reverse superclass's determination
     * 
     * @param object Object to evaluate
     * @return true if URI not in set
     */
    @Override
    protected boolean evaluate(CrawlURI object) {
        boolean superDecision = super.evaluate(object);
        return !superDecision;
    }
}