/**
* 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.jena.query.text.assembler;
import org.apache.jena.assembler.Assembler;
import org.apache.jena.assembler.Mode;
import org.apache.jena.assembler.assemblers.AssemblerBase;
import org.apache.jena.query.text.TextIndexException;
import org.apache.jena.query.text.TextIndexLucene;
import org.apache.jena.query.text.analyzer.Util;
import org.apache.jena.rdf.model.RDFNode;
import org.apache.jena.rdf.model.Resource;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
/**
* Assembler to create localized analyzer.
*/
public class LocalizedAnalyzerAssembler extends AssemblerBase {
/*
text:map (
[ text:field "text" ;
text:predicate rdfs:label;
text:analyzer [
a lucene:LocalizedAnalyzer ;
text:language "en" ;
]
.
*/
@Override
public Analyzer open(Assembler a, Resource root, Mode mode) {
if (root.hasProperty(TextVocab.pLanguage)) {
RDFNode node = root.getProperty(TextVocab.pLanguage).getObject();
if (! node.isLiteral()) {
throw new TextIndexException("text:language property must be a string : " + node);
}
String lang = node.toString();
return Util.getLocalizedAnalyzer(lang, TextIndexLucene.VER);
} else {
return new StandardAnalyzer(TextIndexLucene.VER);
}
}
}