package org.apache.lucene.search;
/**
* 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 org.apache.lucene.util.LuceneTestCase;
import junit.framework.Test;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.BooleanQuery;
import java.io.IOException;
/**
*
* @version $Id: TestBooleanPrefixQuery.java 808519 2009-08-27 16:57:27Z mikemccand $
**/
public class TestBooleanPrefixQuery extends LuceneTestCase {
public static void main(String[] args) {
TestRunner.run(suite());
}
public static Test suite() {
return new TestSuite(TestBooleanPrefixQuery.class);
}
public TestBooleanPrefixQuery(String name) {
super(name);
}
private int getCount(IndexReader r, Query q) throws Exception {
if (q instanceof BooleanQuery) {
return ((BooleanQuery) q).getClauses().length;
} else if (q instanceof ConstantScoreQuery) {
DocIdSetIterator iter = ((ConstantScoreQuery) q).getFilter().getDocIdSet(r).iterator();
int count = 0;
while(iter.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
count++;
}
return count;
} else {
throw new RuntimeException("unepxected query " + q);
}
}
public void testMethod() throws Exception {
RAMDirectory directory = new RAMDirectory();
String[] categories = new String[]{"food",
"foodanddrink",
"foodanddrinkandgoodtimes",
"food and drink"};
Query rw1 = null;
Query rw2 = null;
IndexReader reader = null;
try {
IndexWriter writer = new IndexWriter(directory, new
WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
for (int i = 0; i < categories.length; i++) {
Document doc = new Document();
doc.add(new Field("category", categories[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
writer.addDocument(doc);
}
writer.close();
reader = IndexReader.open(directory);
PrefixQuery query = new PrefixQuery(new Term("category", "foo"));
rw1 = query.rewrite(reader);
BooleanQuery bq = new BooleanQuery();
bq.add(query, BooleanClause.Occur.MUST);
rw2 = bq.rewrite(reader);
} catch (IOException e) {
fail(e.getMessage());
}
assertEquals("Number of Clauses Mismatch", getCount(reader, rw1), getCount(reader, rw2));
}
}