/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on May 6, 2014 by Jeremy J. Carroll, Syapse Inc.
*/
package com.bigdata.search;
import java.io.IOException;
import java.io.StringReader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.miscellaneous.EmptyTokenStream;
import org.apache.lucene.analysis.standard.StandardTokenizer;
/**
* An analyzer that always returns an {@link EmptyTokenStream}, this can
* be used with {@link ConfigurableAnalyzerFactory}
* to switch off indexing and searching for specific language tags.
* @author jeremycarroll
*
*/
public class EmptyAnalyzer extends Analyzer {
@Override
protected TokenStreamComponents createComponents(String input) {
Tokenizer source = new Tokenizer() {
@Override
public boolean incrementToken() throws IOException {
return false;
}
};
return new TokenStreamComponents(source);
}
}