package org.apache.lucene.search.vectorhighlight;
/*
* 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.
*/
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.lucene.search.vectorhighlight.FieldFragList.WeightedFragInfo;
import org.apache.lucene.search.vectorhighlight.FieldPhraseList.WeightedPhraseInfo;
/**
* An implementation class of {@link FragListBuilder} that generates one {@link WeightedFragInfo} object.
* Typical use case of this class is that you can get an entire field contents
* by using both of this class and {@link SimpleFragmentsBuilder}.<br/>
* <pre class="prettyprint">
* FastVectorHighlighter h = new FastVectorHighlighter( true, true,
* new SingleFragListBuilder(), new SimpleFragmentsBuilder() );
* </pre>
*/
public class SingleFragListBuilder implements FragListBuilder {
@Override
public FieldFragList createFieldFragList(FieldPhraseList fieldPhraseList,
int fragCharSize) {
FieldFragList ffl = new SimpleFieldFragList( fragCharSize );
List<WeightedPhraseInfo> wpil = new ArrayList<WeightedPhraseInfo>();
Iterator<WeightedPhraseInfo> ite = fieldPhraseList.phraseList.iterator();
WeightedPhraseInfo phraseInfo = null;
while( true ){
if( !ite.hasNext() ) break;
phraseInfo = ite.next();
if( phraseInfo == null ) break;
wpil.add( phraseInfo );
}
if( wpil.size() > 0 )
ffl.add( 0, Integer.MAX_VALUE, wpil );
return ffl;
}
}