/**
* 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.microformats.reltag;
// Nutch imports
import org.apache.nutch.crawl.CrawlDatum;
import org.apache.nutch.crawl.Inlinks;
import org.apache.nutch.indexer.IndexingFilter;
import org.apache.nutch.indexer.IndexingException;
import org.apache.nutch.indexer.NutchDocument;
import org.apache.nutch.indexer.lucene.LuceneWriter;
import org.apache.hadoop.io.Text;
import org.apache.nutch.parse.Parse;
// Hadoop imports
import org.apache.hadoop.conf.Configuration;
/**
* An {@link org.apache.nutch.indexer.IndexingFilter} that
* add <code>tag</code> field(s) to the document.
*
* @see <a href="http://www.microformats.org/wiki/rel-tag">
* http://www.microformats.org/wiki/rel-tag</a>
* @author Jérôme Charron
*/
public class RelTagIndexingFilter implements IndexingFilter {
private Configuration conf;
// Inherited JavaDoc
public NutchDocument filter(NutchDocument doc, Parse parse, Text url, CrawlDatum datum, Inlinks inlinks)
throws IndexingException {
// Check if some Rel-Tags found, possibly put there by RelTagParser
String[] tags = parse.getData().getParseMeta().getValues(RelTagParser.REL_TAG);
if (tags != null) {
for (int i=0; i<tags.length; i++) {
doc.add("tag", tags[i]);
}
}
return doc;
}
public void addIndexBackendOptions(Configuration conf) {
LuceneWriter.addFieldOptions("tag", LuceneWriter.STORE.YES,
LuceneWriter.INDEX.UNTOKENIZED, conf);
}
/* ----------------------------- *
* <implementation:Configurable> *
* ----------------------------- */
public void setConf(Configuration conf) {
this.conf = conf;
}
public Configuration getConf() {
return this.conf;
}
/* ------------------------------ *
* </implementation:Configurable> *
* ------------------------------ */
}