package org.apache.lucene.index;
/**
* 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 junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.document.Document;
import org.apache.lucene.search.Similarity;
import org.apache.lucene.demo.FileDocument;
import java.io.*;
import java.util.*;
/** JUnit adaptation of an older test case DocTest.
* @author dmitrys@earthlink.net
* @version $Id: TestDoc.java 496851 2007-01-16 20:24:52Z mikemccand $
*/
public class TestDoc extends TestCase {
/** Main for running test case by itself. */
public static void main(String args[]) {
TestRunner.run (new TestSuite(TestDoc.class));
}
private File workDir;
private File indexDir;
private LinkedList files;
/** Set the test case. This test case needs
* a few text files created in the current working directory.
*/
public void setUp() throws IOException {
workDir = new File(System.getProperty("tempDir"),"TestDoc");
workDir.mkdirs();
indexDir = new File(workDir, "testIndex");
indexDir.mkdirs();
Directory directory = FSDirectory.getDirectory(indexDir, true);
directory.close();
files = new LinkedList();
files.add(createOutput("test.txt",
"This is the first test file"
));
files.add(createOutput("test2.txt",
"This is the second test file"
));
}
private File createOutput(String name, String text) throws IOException {
FileWriter fw = null;
PrintWriter pw = null;
try {
File f = new File(workDir, name);
if (f.exists()) f.delete();
fw = new FileWriter(f);
pw = new PrintWriter(fw);
pw.println(text);
return f;
} finally {
if (pw != null) pw.close();
if (fw != null) fw.close();
}
}
/** This test executes a number of merges and compares the contents of
* the segments created when using compound file or not using one.
*
* TODO: the original test used to print the segment contents to System.out
* for visual validation. To have the same effect, a new method
* checkSegment(String name, ...) should be created that would
* assert various things about the segment.
*/
public void testIndexAndMerge() throws Exception {
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw, true);
Directory directory = FSDirectory.getDirectory(indexDir, true);
directory.close();
SegmentInfo si1 = indexDoc("one", "test.txt");
printSegment(out, si1);
SegmentInfo si2 = indexDoc("two", "test2.txt");
printSegment(out, si2);
SegmentInfo siMerge = merge(si1, si2, "merge", false);
printSegment(out, siMerge);
SegmentInfo siMerge2 = merge(si1, si2, "merge2", false);
printSegment(out, siMerge2);
SegmentInfo siMerge3 = merge(siMerge, siMerge2, "merge3", false);
printSegment(out, siMerge3);
out.close();
sw.close();
String multiFileOutput = sw.getBuffer().toString();
//System.out.println(multiFileOutput);
sw = new StringWriter();
out = new PrintWriter(sw, true);
directory = FSDirectory.getDirectory(indexDir, true);
directory.close();
si1 = indexDoc("one", "test.txt");
printSegment(out, si1);
si2 = indexDoc("two", "test2.txt");
printSegment(out, si2);
siMerge = merge(si1, si2, "merge", true);
printSegment(out, siMerge);
siMerge2 = merge(si1, si2, "merge2", true);
printSegment(out, siMerge2);
siMerge3 = merge(siMerge, siMerge2, "merge3", true);
printSegment(out, siMerge3);
out.close();
sw.close();
String singleFileOutput = sw.getBuffer().toString();
assertEquals(multiFileOutput, singleFileOutput);
}
private SegmentInfo indexDoc(String segment, String fileName)
throws Exception
{
Directory directory = FSDirectory.getDirectory(indexDir, false);
Analyzer analyzer = new SimpleAnalyzer();
DocumentWriter writer =
new DocumentWriter(directory, analyzer, Similarity.getDefault(), 1000);
File file = new File(workDir, fileName);
Document doc = FileDocument.Document(file);
writer.addDocument(segment, doc);
directory.close();
return new SegmentInfo(segment, 1, directory, false, false);
}
private SegmentInfo merge(SegmentInfo si1, SegmentInfo si2, String merged, boolean useCompoundFile)
throws Exception {
Directory directory = FSDirectory.getDirectory(indexDir, false);
SegmentReader r1 = SegmentReader.get(si1);
SegmentReader r2 = SegmentReader.get(si2);
SegmentMerger merger = new SegmentMerger(directory, merged);
merger.add(r1);
merger.add(r2);
merger.merge();
merger.closeReaders();
if (useCompoundFile) {
Vector filesToDelete = merger.createCompoundFile(merged + ".cfs");
for (Iterator iter = filesToDelete.iterator(); iter.hasNext();)
directory.deleteFile((String) iter.next());
}
directory.close();
return new SegmentInfo(merged, si1.docCount + si2.docCount, directory, useCompoundFile, true);
}
private void printSegment(PrintWriter out, SegmentInfo si)
throws Exception {
Directory directory = FSDirectory.getDirectory(indexDir, false);
SegmentReader reader = SegmentReader.get(si);
for (int i = 0; i < reader.numDocs(); i++)
out.println(reader.document(i));
TermEnum tis = reader.terms();
while (tis.next()) {
out.print(tis.term());
out.println(" DF=" + tis.docFreq());
TermPositions positions = reader.termPositions(tis.term());
try {
while (positions.next()) {
out.print(" doc=" + positions.doc());
out.print(" TF=" + positions.freq());
out.print(" pos=");
out.print(positions.nextPosition());
for (int j = 1; j < positions.freq(); j++)
out.print("," + positions.nextPosition());
out.println("");
}
} finally {
positions.close();
}
}
tis.close();
reader.close();
directory.close();
}
}
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