package org.apache.lucene.search;
/**
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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 junit.framework.TestCase;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
/** Document boost unit test.
*
* @author Doug Cutting
* @version $Revision: 150694 $
*/
public class TestSetNorm extends TestCase {
public TestSetNorm(String name) {
super(name);
}
public void testSetNorm() throws Exception {
RAMDirectory store = new RAMDirectory();
IndexWriter writer = new IndexWriter(store, new SimpleAnalyzer(), true);
// add the same document four times
Field f1 = Field.Text("field", "word");
Document d1 = new Document();
d1.add(f1);
writer.addDocument(d1);
writer.addDocument(d1);
writer.addDocument(d1);
writer.addDocument(d1);
writer.close();
// reset the boost of each instance of this document
IndexReader reader = IndexReader.open(store);
reader.setNorm(0, "field", 1.0f);
reader.setNorm(1, "field", 2.0f);
reader.setNorm(2, "field", 4.0f);
reader.setNorm(3, "field", 16.0f);
reader.close();
// check that searches are ordered by this boost
final float[] scores = new float[4];
new IndexSearcher(store).search
(new TermQuery(new Term("field", "word")),
new HitCollector() {
public final void collect(int doc, float score) {
scores[doc] = score;
}
});
float lastScore = 0.0f;
for (int i = 0; i < 4; i++) {
assertTrue(scores[i] > lastScore);
lastScore = scores[i];
}
}
}
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