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 org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.store.BufferedIndexInput;
import org.apache.lucene.store.Directory;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.codecs.CodecProvider;
import org.apache.lucene.util.BytesRef;
import java.io.IOException;
import java.util.Collection;
import java.util.Random;
public class TestSegmentMerger extends LuceneTestCase {
//The variables for the new merged segment
private Directory mergedDir;
private String mergedSegment = "test";
//First segment to be merged
private Directory merge1Dir;
private Document doc1 = new Document();
private SegmentReader reader1 = null;
//Second Segment to be merged
private Directory merge2Dir;
private Document doc2 = new Document();
private SegmentReader reader2 = null;
public TestSegmentMerger(String s) {
super(s);
}
@Override
protected void setUp() throws Exception {
super.setUp();
Random random = newRandom();
mergedDir = newDirectory(random);
merge1Dir = newDirectory(random);
merge2Dir = newDirectory(random);
DocHelper.setupDoc(doc1);
SegmentInfo info1 = DocHelper.writeDoc(merge1Dir, doc1);
DocHelper.setupDoc(doc2);
SegmentInfo info2 = DocHelper.writeDoc(merge2Dir, doc2);
reader1 = SegmentReader.get(true, info1, IndexReader.DEFAULT_TERMS_INDEX_DIVISOR);
reader2 = SegmentReader.get(true, info2, IndexReader.DEFAULT_TERMS_INDEX_DIVISOR);
}
@Override
protected void tearDown() throws Exception {
reader1.close();
reader2.close();
mergedDir.close();
merge1Dir.close();
merge2Dir.close();
super.tearDown();
}
public void test() {
assertTrue(mergedDir != null);
assertTrue(merge1Dir != null);
assertTrue(merge2Dir != null);
assertTrue(reader1 != null);
assertTrue(reader2 != null);
}
public void testMerge() throws IOException {
SegmentMerger merger = new SegmentMerger(mergedDir, IndexWriter.DEFAULT_TERM_INDEX_INTERVAL, mergedSegment, null, CodecProvider.getDefault(), null);
merger.add(reader1);
merger.add(reader2);
int docsMerged = merger.merge();
merger.closeReaders();
assertTrue(docsMerged == 2);
//Should be able to open a new SegmentReader against the new directory
SegmentReader mergedReader = SegmentReader.get(false, mergedDir, new SegmentInfo(mergedSegment, docsMerged, mergedDir, false, -1,
null, false, merger.hasProx(), merger.getCodec()), BufferedIndexInput.BUFFER_SIZE, true, IndexReader.DEFAULT_TERMS_INDEX_DIVISOR, null);
assertTrue(mergedReader != null);
assertTrue(mergedReader.numDocs() == 2);
Document newDoc1 = mergedReader.document(0);
assertTrue(newDoc1 != null);
//There are 2 unstored fields on the document
assertTrue(DocHelper.numFields(newDoc1) == DocHelper.numFields(doc1) - DocHelper.unstored.size());
Document newDoc2 = mergedReader.document(1);
assertTrue(newDoc2 != null);
assertTrue(DocHelper.numFields(newDoc2) == DocHelper.numFields(doc2) - DocHelper.unstored.size());
DocsEnum termDocs = MultiFields.getTermDocsEnum(mergedReader,
MultiFields.getDeletedDocs(mergedReader),
DocHelper.TEXT_FIELD_2_KEY,
new BytesRef("field"));
assertTrue(termDocs != null);
assertTrue(termDocs.nextDoc() != DocsEnum.NO_MORE_DOCS);
Collection<String> stored = mergedReader.getFieldNames(IndexReader.FieldOption.INDEXED_WITH_TERMVECTOR);
assertTrue(stored != null);
//System.out.println("stored size: " + stored.size());
assertTrue("We do not have 3 fields that were indexed with term vector",stored.size() == 3);
TermFreqVector vector = mergedReader.getTermFreqVector(0, DocHelper.TEXT_FIELD_2_KEY);
assertTrue(vector != null);
BytesRef [] terms = vector.getTerms();
assertTrue(terms != null);
//System.out.println("Terms size: " + terms.length);
assertTrue(terms.length == 3);
int [] freqs = vector.getTermFrequencies();
assertTrue(freqs != null);
//System.out.println("Freqs size: " + freqs.length);
assertTrue(vector instanceof TermPositionVector == true);
for (int i = 0; i < terms.length; i++) {
String term = terms[i].utf8ToString();
int freq = freqs[i];
//System.out.println("Term: " + term + " Freq: " + freq);
assertTrue(DocHelper.FIELD_2_TEXT.indexOf(term) != -1);
assertTrue(DocHelper.FIELD_2_FREQS[i] == freq);
}
TestSegmentReader.checkNorms(mergedReader);
mergedReader.close();
}
}