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 java.util.List;
import java.util.Random;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.SlowMultiReaderWrapper;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.spans.SpanTermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.English;
import org.apache.lucene.util.LuceneTestCase;
public class TestSpanQueryFilter extends LuceneTestCase {
public TestSpanQueryFilter(String s) {
super(s);
}
public void testFilterWorks() throws Exception {
Random random = newRandom();
Directory dir = newDirectory(random);
RandomIndexWriter writer = new RandomIndexWriter(random, dir);
for (int i = 0; i < 500; i++) {
Document document = new Document();
document.add(new Field("field", English.intToEnglish(i) + " equals " + English.intToEnglish(i),
Field.Store.NO, Field.Index.ANALYZED));
writer.addDocument(document);
}
IndexReader reader = writer.getReader();
writer.close();
SpanTermQuery query = new SpanTermQuery(new Term("field", English.intToEnglish(10).trim()));
SpanQueryFilter filter = new SpanQueryFilter(query);
SpanFilterResult result = filter.bitSpans(SlowMultiReaderWrapper.wrap(reader));
DocIdSet docIdSet = result.getDocIdSet();
assertTrue("docIdSet is null and it shouldn't be", docIdSet != null);
assertContainsDocId("docIdSet doesn't contain docId 10", docIdSet, 10);
List<SpanFilterResult.PositionInfo> spans = result.getPositions();
assertTrue("spans is null and it shouldn't be", spans != null);
int size = getDocIdSetSize(docIdSet);
assertTrue("spans Size: " + spans.size() + " is not: " + size, spans.size() == size);
for (final SpanFilterResult.PositionInfo info: spans) {
assertTrue("info is null and it shouldn't be", info != null);
//The doc should indicate the bit is on
assertContainsDocId("docIdSet doesn't contain docId " + info.getDoc(), docIdSet, info.getDoc());
//There should be two positions in each
assertTrue("info.getPositions() Size: " + info.getPositions().size() + " is not: " + 2, info.getPositions().size() == 2);
}
reader.close();
dir.close();
}
int getDocIdSetSize(DocIdSet docIdSet) throws Exception {
int size = 0;
DocIdSetIterator it = docIdSet.iterator();
while (it.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
size++;
}
return size;
}
public void assertContainsDocId(String msg, DocIdSet docIdSet, int docId) throws Exception {
DocIdSetIterator it = docIdSet.iterator();
assertTrue(msg, it.advance(docId) != DocIdSetIterator.NO_MORE_DOCS);
assertTrue(msg, it.docID() == docId);
}
}