Java tutorial
/** * 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.nutch.parse.replace; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configuration; import org.apache.nutch.parse.HTMLMetaTags; import org.apache.nutch.parse.HtmlParseFilter; import org.apache.nutch.parse.Parse; import org.apache.nutch.parse.ParseResult; import org.apache.nutch.protocol.Content; import org.w3c.dom.DocumentFragment; /** * Do pattern replacements on selected field contents * prior to indexing. */ public class ReplaceParser implements HtmlParseFilter { private static final Log LOG = LogFactory.getLog(ReplaceParser.class.getName()); private static Map<String, List<Object>> REPLACEPATTERNS_BY_HOST = new HashMap(); private static Map<String, List<Object>> REPLACEPATTERNS_BY_URL = new HashMap(); private Configuration conf; private Set<String> metatagset = new HashSet<String>(); public void setConf(Configuration conf) { this.conf = conf; String[] values = conf.getStrings("parse.replace.regexp", null); if (values != null) { this.parseConf(values); } } public Configuration getConf() { return this.conf; } private void parseConf(String[] values) { } public ParseResult filter(Content content, ParseResult parseResult, HTMLMetaTags metaTags, DocumentFragment doc) { Parse parse = parseResult.get(content.getUrl()); return parseResult; } }