package org.apache.lucene.index;
/**
* 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.store.RAMDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.search.Similarity;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import java.io.IOException;
public class TestSegmentTermDocs extends TestCase {
private Document testDoc = new Document();
private Directory dir = new RAMDirectory();
public TestSegmentTermDocs(String s) {
super(s);
}
protected void setUp() {
DocHelper.setupDoc(testDoc);
DocHelper.writeDoc(dir, testDoc);
}
protected void tearDown() {
}
public void test() {
assertTrue(dir != null);
}
public void testTermDocs() {
try {
//After adding the document, we should be able to read it back in
SegmentReader reader = new SegmentReader(new SegmentInfo("test", 1, dir));
assertTrue(reader != null);
SegmentTermDocs segTermDocs = new SegmentTermDocs(reader);
assertTrue(segTermDocs != null);
segTermDocs.seek(new Term(DocHelper.TEXT_FIELD_2_KEY, "field"));
if (segTermDocs.next() == true)
{
int docId = segTermDocs.doc();
assertTrue(docId == 0);
int freq = segTermDocs.freq();
assertTrue(freq == 3);
}
reader.close();
} catch (IOException e) {
assertTrue(false);
}
}
public void testBadSeek() {
try {
//After adding the document, we should be able to read it back in
SegmentReader reader = new SegmentReader(new SegmentInfo("test", 3, dir));
assertTrue(reader != null);
SegmentTermDocs segTermDocs = new SegmentTermDocs(reader);
assertTrue(segTermDocs != null);
segTermDocs.seek(new Term("textField2", "bad"));
assertTrue(segTermDocs.next() == false);
reader.close();
} catch (IOException e) {
assertTrue(false);
}
try {
//After adding the document, we should be able to read it back in
SegmentReader reader = new SegmentReader(new SegmentInfo("test", 3, dir));
assertTrue(reader != null);
SegmentTermDocs segTermDocs = new SegmentTermDocs(reader);
assertTrue(segTermDocs != null);
segTermDocs.seek(new Term("junk", "bad"));
assertTrue(segTermDocs.next() == false);
reader.close();
} catch (IOException e) {
assertTrue(false);
}
}
public void testSkipTo() {
try {
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
Term ta = new Term("content","aaa");
for(int i = 0; i < 10; i++)
addDoc(writer, "aaa aaa aaa aaa");
Term tb = new Term("content","bbb");
for(int i = 0; i < 16; i++)
addDoc(writer, "bbb bbb bbb bbb");
Term tc = new Term("content","ccc");
for(int i = 0; i < 50; i++)
addDoc(writer, "ccc ccc ccc ccc");
// assure that we deal with a single segment
writer.optimize();
writer.close();
IndexReader reader = IndexReader.open(dir);
TermDocs tdocs = reader.termDocs();
// without optimization (assumption skipInterval == 16)
// with next
tdocs.seek(ta);
assertTrue(tdocs.next());
assertEquals(0, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.next());
assertEquals(1, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.skipTo(0));
assertEquals(2, tdocs.doc());
assertTrue(tdocs.skipTo(4));
assertEquals(4, tdocs.doc());
assertTrue(tdocs.skipTo(9));
assertEquals(9, tdocs.doc());
assertFalse(tdocs.skipTo(10));
// without next
tdocs.seek(ta);
assertTrue(tdocs.skipTo(0));
assertEquals(0, tdocs.doc());
assertTrue(tdocs.skipTo(4));
assertEquals(4, tdocs.doc());
assertTrue(tdocs.skipTo(9));
assertEquals(9, tdocs.doc());
assertFalse(tdocs.skipTo(10));
// exactly skipInterval documents and therefore with optimization
// with next
tdocs.seek(tb);
assertTrue(tdocs.next());
assertEquals(10, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.next());
assertEquals(11, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.skipTo(5));
assertEquals(12, tdocs.doc());
assertTrue(tdocs.skipTo(15));
assertEquals(15, tdocs.doc());
assertTrue(tdocs.skipTo(24));
assertEquals(24, tdocs.doc());
assertTrue(tdocs.skipTo(25));
assertEquals(25, tdocs.doc());
assertFalse(tdocs.skipTo(26));
// without next
tdocs.seek(tb);
assertTrue(tdocs.skipTo(5));
assertEquals(10, tdocs.doc());
assertTrue(tdocs.skipTo(15));
assertEquals(15, tdocs.doc());
assertTrue(tdocs.skipTo(24));
assertEquals(24, tdocs.doc());
assertTrue(tdocs.skipTo(25));
assertEquals(25, tdocs.doc());
assertFalse(tdocs.skipTo(26));
// much more than skipInterval documents and therefore with optimization
// with next
tdocs.seek(tc);
assertTrue(tdocs.next());
assertEquals(26, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.next());
assertEquals(27, tdocs.doc());
assertEquals(4, tdocs.freq());
assertTrue(tdocs.skipTo(5));
assertEquals(28, tdocs.doc());
assertTrue(tdocs.skipTo(40));
assertEquals(40, tdocs.doc());
assertTrue(tdocs.skipTo(57));
assertEquals(57, tdocs.doc());
assertTrue(tdocs.skipTo(74));
assertEquals(74, tdocs.doc());
assertTrue(tdocs.skipTo(75));
assertEquals(75, tdocs.doc());
assertFalse(tdocs.skipTo(76));
//without next
tdocs.seek(tc);
assertTrue(tdocs.skipTo(5));
assertEquals(26, tdocs.doc());
assertTrue(tdocs.skipTo(40));
assertEquals(40, tdocs.doc());
assertTrue(tdocs.skipTo(57));
assertEquals(57, tdocs.doc());
assertTrue(tdocs.skipTo(74));
assertEquals(74, tdocs.doc());
assertTrue(tdocs.skipTo(75));
assertEquals(75, tdocs.doc());
assertFalse(tdocs.skipTo(76));
tdocs.close();
reader.close();
dir.close();
} catch (IOException e) {
assertTrue(false);
}
}
private void addDoc(IndexWriter writer, String value) throws IOException
{
Document doc = new Document();
doc.add(Field.UnStored("content", value));
writer.addDocument(doc);
}
}
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