/*******************************************************************************
* Copyright (c) 2000, 2015 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Sopot Cela - Bug 466829
*******************************************************************************/
package org.eclipse.help.internal.search;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BoostQuery;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.Query;
/**
* Represents a quoted token in user search query words
*/
public class QueryWordsExactPhrase extends QueryWordsToken {
private List<String> words;
public QueryWordsExactPhrase() {
super(QueryWordsToken.EXACT_PHRASE, ""); //$NON-NLS-1$
words = new ArrayList<>();
}
public void addWord(String word) {
words.add(word);
if (words.size() <= 1)
value = word;
else
value += " " + word; //$NON-NLS-1$
}
public List<String> getWords() {
return words;
}
/**
* Creates a lucene query for a field
*/
@Override
public Query createLuceneQuery(String field, float boost) {
PhraseQuery.Builder qBuilder = new PhraseQuery.Builder();
BoostQuery boostQuery = null;
for (Iterator<String> it = getWords().iterator(); it.hasNext();) {
String word = it.next();
Term t = new Term("exact_" + field, word); //$NON-NLS-1$
qBuilder.add(t);
boostQuery = new BoostQuery(qBuilder.build(), boost);
}
return boostQuery;
}
}