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

Go to download

Show more of this group Show more artifacts with this name
Show all versions of heritrix-modules Show documentation

This project contains some of the configurable modules used within the Heritrix application to crawl the web. The modules in this project can be used in applications other than Heritrix, however.

There is a newer version: 3.5.0

Show newest version

/*
 *  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;
    }
}