| /* |
| * 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.indexer; |
| |
| import org.apache.nutch.plugin.PluginRepository; |
| import org.apache.nutch.parse.Parse; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.nutch.crawl.CrawlDatum; |
| import org.apache.nutch.crawl.Inlinks; |
| import org.apache.hadoop.io.Text; |
| |
| /** Creates and caches {@link IndexingFilter} implementing plugins. */ |
| public class IndexingFilters { |
| |
| public static final String INDEXINGFILTER_ORDER = "indexingfilter.order"; |
| |
| private IndexingFilter[] indexingFilters; |
| |
| public IndexingFilters(Configuration conf) { |
| indexingFilters = (IndexingFilter[]) PluginRepository.get(conf) |
| .getOrderedPlugins(IndexingFilter.class, IndexingFilter.X_POINT_ID, |
| INDEXINGFILTER_ORDER); |
| } |
| |
| /** Run all defined filters. */ |
| public NutchDocument filter(NutchDocument doc, Parse parse, Text url, |
| CrawlDatum datum, Inlinks inlinks) throws IndexingException { |
| for (int i = 0; i < this.indexingFilters.length; i++) { |
| doc = this.indexingFilters[i].filter(doc, parse, url, datum, inlinks); |
| // break the loop if an indexing filter discards the doc |
| if (doc == null) |
| return null; |
| } |
| |
| return doc; |
| } |
| |
| } |