org.apache.solr.highlight.BreakIteratorBoundaryScanner Maven / Gradle / Ivy
/*
* 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.solr.highlight;
import java.text.BreakIterator;
import java.util.Locale;
import org.apache.lucene.search.vectorhighlight.BoundaryScanner;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrException.ErrorCode;
import org.apache.solr.common.params.HighlightParams;
import org.apache.solr.common.params.SolrParams;
public class BreakIteratorBoundaryScanner extends SolrBoundaryScanner {
@Override
protected BoundaryScanner get(String fieldName, SolrParams params) {
// construct Locale
String language = params.getFieldParam(fieldName, HighlightParams.BS_LANGUAGE);
String country = params.getFieldParam(fieldName, HighlightParams.BS_COUNTRY);
if(country != null && language == null){
throw new SolrException(ErrorCode.BAD_REQUEST,
HighlightParams.BS_LANGUAGE + " parameter cannot be null when you specify " + HighlightParams.BS_COUNTRY);
}
Locale locale = null;
if(language != null){
locale = country == null ? new Locale(language) : new Locale(language, country);
} else {
locale = Locale.ROOT;
}
// construct BreakIterator
String type = params.getFieldParam(fieldName, HighlightParams.BS_TYPE, "WORD").toLowerCase(Locale.ROOT);
BreakIterator bi = null;
if(type.equals("character")){
bi = BreakIterator.getCharacterInstance(locale);
}
else if(type.equals("word")){
bi = BreakIterator.getWordInstance(locale);
}
else if(type.equals("line")){
bi = BreakIterator.getLineInstance(locale);
}
else if(type.equals("sentence")){
bi = BreakIterator.getSentenceInstance(locale);
}
else
throw new SolrException(ErrorCode.BAD_REQUEST, type + " is invalid for parameter " + HighlightParams.BS_TYPE);
return new org.apache.lucene.search.vectorhighlight.BreakIteratorBoundaryScanner(bi);
}
///////////////////////////////////////////////////////////////////////
//////////////////////// SolrInfoMBeans methods ///////////////////////
///////////////////////////////////////////////////////////////////////
@Override
public String getDescription() {
return "BreakIteratorBoundaryScanner";
}
}