/**
* License Agreement for OpenSearchServer
*
* Copyright (C) 2013 Emmanuel Keller / Jaeksoft
*
* http://www.open-search-server.com
*
* This file is part of OpenSearchServer.
*
* OpenSearchServer 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, either version 3 of the License, or
* (at your option) any later version.
*
* OpenSearchServer 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 OpenSearchServer.
* If not, see <http://www.gnu.org/licenses/>.
**/
package com.jaeksoft.searchlib.analysis.filter;
import java.io.IOException;
import org.apache.lucene.analysis.TokenStream;
import com.jaeksoft.searchlib.SearchLibException;
import com.jaeksoft.searchlib.analysis.ClassPropertyEnum;
import com.jaeksoft.searchlib.analysis.FilterFactory;
import com.jaeksoft.searchlib.util.StringUtils;
public class RemoveTagFilter extends FilterFactory {
private static final String[] EMTPY_TAG_ARRAY = {};
private String[] allowedTagArray = EMTPY_TAG_ARRAY;
public class RemoveTagTokenFilter extends AbstractTermFilter {
protected RemoveTagTokenFilter(TokenStream input) {
super(input);
}
@Override
public final boolean incrementToken() throws IOException {
for (;;) {
if (!input.incrementToken())
return false;
createToken(StringUtils.removeTag(termAtt.toString(),
allowedTagArray));
return true;
}
}
}
@Override
protected void checkValue(ClassPropertyEnum prop, String value)
throws SearchLibException {
if (prop == ClassPropertyEnum.ALLOWED_TAGS) {
if (value == null)
allowedTagArray = EMTPY_TAG_ARRAY;
else
allowedTagArray = StringUtils.split(value);
}
}
@Override
protected void initProperties() throws SearchLibException {
super.initProperties();
addProperty(ClassPropertyEnum.ALLOWED_TAGS, "", null, 20, 1);
}
@Override
public TokenStream create(TokenStream tokenStream) {
return new RemoveTagTokenFilter(tokenStream);
}
}