| /* |
| * 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.segment; |
| |
| import java.util.Collection; |
| |
| import org.apache.hadoop.io.Text; |
| import org.apache.nutch.crawl.CrawlDatum; |
| import org.apache.nutch.parse.ParseData; |
| import org.apache.nutch.parse.ParseText; |
| import org.apache.nutch.protocol.Content; |
| |
| /** |
| * Interface used to filter segments during segment merge. It allows filtering |
| * on more sophisticated criteria than just URLs. In particular it allows |
| * filtering based on metadata collected while parsing page. |
| * |
| */ |
| public interface SegmentMergeFilter { |
| /** The name of the extension point. */ |
| public final static String X_POINT_ID = SegmentMergeFilter.class.getName(); |
| |
| /** |
| * The filtering method which gets all information being merged for a given |
| * key (URL). |
| * @param key the segment record key |
| * @param generateData directory and data produced by the generation phase |
| * @param fetchData directory and data produced by the fetch phase |
| * @param sigData directory and data produced by the parse phase |
| * @param content directory and data produced by the parse phase |
| * @param parseData directory and data produced by the parse phase |
| * @param parseText directory and data produced by the parse phase |
| * @param linked all LINKED values from the latest segment |
| * @return <code>true</code> values for this <code>key</code> (URL) should be merged |
| * into the new segment. |
| */ |
| public boolean filter(Text key, CrawlDatum generateData, |
| CrawlDatum fetchData, CrawlDatum sigData, Content content, |
| ParseData parseData, ParseText parseText, Collection<CrawlDatum> linked); |
| } |