/*
Copyright 2008 Flaptor (flaptor.com)
Licensed 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 com.flaptor.hounder.crawler.modules;
import org.apache.log4j.Logger;
import org.apache.nutch.analysis.lang.LanguageIdentifier;
import com.flaptor.util.Config;
import com.flaptor.util.Execute;
import org.apache.hadoop.conf.Configuration;
import org.apache.nutch.util.NutchConfiguration;
/**
* Process a document checking it's language. Adds a TAG_LANGUAGE_lang tag
* to the FetcDocument (ie: TAG_LANGUAGE_es)
* @author rafa
*
*/
public class LanguageDetectionModule extends AProcessorModule {
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(Execute.whoAmI());
private static LanguageIdentifier langIdentif = null;
public static final String LANGUAGE_TAG="TAG_LANGUAGE_";
public LanguageDetectionModule(String name, Config globalConfig) {
super(name, globalConfig);
Configuration conf = NutchConfiguration.create();
langIdentif = new LanguageIdentifier(conf);
}
@Override
protected void internalProcess(FetchDocument doc) {;
synchronized (this) {
String lang= langIdentif.identify(doc.getText());
try {
doc.addTag(LANGUAGE_TAG + lang);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}