org.archive.modules.deciderules.surt.NotSurtPrefixedDecideRule 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, when 
 * expressed in SURT form, do *not* begin with one of the prefixes
 * in the configured set. 
 * 
 * The set can be filled with SURT prefixes implied or
 * listed in the seeds file, or another external file. 
 *
 * @author gojomo
 */
public class NotSurtPrefixedDecideRule extends SurtPrefixedDecideRule {

    private static final long serialVersionUID = -7491388438128566377L;

    //private static final Logger logger =
    //    Logger.getLogger(NotSurtPrefixedDecideRule.class.getName());
    /**
     * Usual constructor. 
     */
    public NotSurtPrefixedDecideRule() {
    }

    /**
     * Evaluate whether given object's URI is NOT in the SURT
     * prefix set -- simply reverse superclass's determination
     * 
     * @param object
     * @return true if regex is matched
     */
    protected boolean evaluate(CrawlURI object) {
        return !super.evaluate(object);
    }
}