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 java.io.IOException;
import java.io.Reader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.analysis.Token;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.analysis.WhitespaceTokenizer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.document.Field.Index;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.document.Field.TermVector;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util._TestUtil;
public class TestDocumentWriter extends LuceneTestCase {
private RAMDirectory dir;
public TestDocumentWriter(String s) {
super(s);
}
protected void setUp() throws Exception {
super.setUp();
dir = new RAMDirectory();
}
public void test() {
assertTrue(dir != null);
}
public void testAddDocument() throws Exception {
Document testDoc = new Document();
DocHelper.setupDoc(testDoc);
Analyzer analyzer = new WhitespaceAnalyzer();
IndexWriter writer = new IndexWriter(dir, analyzer, true, IndexWriter.MaxFieldLength.LIMITED);
writer.addDocument(testDoc);
writer.flush();
SegmentInfo info = writer.newestSegment();
writer.close();
//After adding the document, we should be able to read it back in
SegmentReader reader = SegmentReader.get(info);
assertTrue(reader != null);
Document doc = reader.document(0);
assertTrue(doc != null);
//System.out.println("Document: " + doc);
Fieldable [] fields = doc.getFields("textField2");
assertTrue(fields != null && fields.length == 1);
assertTrue(fields[0].stringValue().equals(DocHelper.FIELD_2_TEXT));
assertTrue(fields[0].isTermVectorStored());
fields = doc.getFields("textField1");
assertTrue(fields != null && fields.length == 1);
assertTrue(fields[0].stringValue().equals(DocHelper.FIELD_1_TEXT));
assertFalse(fields[0].isTermVectorStored());
fields = doc.getFields("keyField");
assertTrue(fields != null && fields.length == 1);
assertTrue(fields[0].stringValue().equals(DocHelper.KEYWORD_TEXT));
fields = doc.getFields(DocHelper.NO_NORMS_KEY);
assertTrue(fields != null && fields.length == 1);
assertTrue(fields[0].stringValue().equals(DocHelper.NO_NORMS_TEXT));
fields = doc.getFields(DocHelper.TEXT_FIELD_3_KEY);
assertTrue(fields != null && fields.length == 1);
assertTrue(fields[0].stringValue().equals(DocHelper.FIELD_3_TEXT));
// test that the norms are not present in the segment if
// omitNorms is true
for (int i = 0; i < reader.fieldInfos.size(); i++) {
FieldInfo fi = reader.fieldInfos.fieldInfo(i);
if (fi.isIndexed) {
assertTrue(fi.omitNorms == !reader.hasNorms(fi.name));
}
}
}
public void testPositionIncrementGap() throws IOException {
Analyzer analyzer = new Analyzer() {
public TokenStream tokenStream(String fieldName, Reader reader) {
return new WhitespaceTokenizer(reader);
}
public int getPositionIncrementGap(String fieldName) {
return 500;
}
};
IndexWriter writer = new IndexWriter(dir, analyzer, true, IndexWriter.MaxFieldLength.LIMITED);
Document doc = new Document();
doc.add(new Field("repeated", "repeated one", Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("repeated", "repeated two", Field.Store.YES, Field.Index.ANALYZED));
writer.addDocument(doc);
writer.flush();
SegmentInfo info = writer.newestSegment();
writer.close();
SegmentReader reader = SegmentReader.get(info);
TermPositions termPositions = reader.termPositions(new Term("repeated", "repeated"));
assertTrue(termPositions.next());
int freq = termPositions.freq();
assertEquals(2, freq);
assertEquals(0, termPositions.nextPosition());
assertEquals(502, termPositions.nextPosition());
}
public void testTokenReuse() throws IOException {
Analyzer analyzer = new Analyzer() {
public TokenStream tokenStream(String fieldName, Reader reader) {
return new TokenFilter(new WhitespaceTokenizer(reader)) {
boolean first=true;
Token buffered;
public Token next(final Token reusableToken) throws IOException {
if (buffered != null) {
Token nextToken = buffered;
buffered=null;
return nextToken;
}
Token nextToken = input.next(reusableToken);
if (nextToken==null) return null;
if (Character.isDigit(nextToken.termBuffer()[0])) {
nextToken.setPositionIncrement(nextToken.termBuffer()[0] - '0');
}
if (first) {
// set payload on first position only
nextToken.setPayload(new Payload(new byte[]{100}));
first = false;
}
// index a "synonym" for every token
buffered = (Token)nextToken.clone();
buffered.setPayload(null);
buffered.setPositionIncrement(0);
buffered.setTermBuffer(new char[]{'b'}, 0, 1);
return nextToken;
}
};
}
};
IndexWriter writer = new IndexWriter(dir, analyzer, true, IndexWriter.MaxFieldLength.LIMITED);
Document doc = new Document();
doc.add(new Field("f1", "a 5 a a", Field.Store.YES, Field.Index.ANALYZED));
writer.addDocument(doc);
writer.flush();
SegmentInfo info = writer.newestSegment();
writer.close();
SegmentReader reader = SegmentReader.get(info);
TermPositions termPositions = reader.termPositions(new Term("f1", "a"));
assertTrue(termPositions.next());
int freq = termPositions.freq();
assertEquals(3, freq);
assertEquals(0, termPositions.nextPosition());
assertEquals(true, termPositions.isPayloadAvailable());
assertEquals(6, termPositions.nextPosition());
assertEquals(false, termPositions.isPayloadAvailable());
assertEquals(7, termPositions.nextPosition());
assertEquals(false, termPositions.isPayloadAvailable());
}
public void testPreAnalyzedField() throws IOException {
IndexWriter writer = new IndexWriter(dir, new SimpleAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
Document doc = new Document();
doc.add(new Field("preanalyzed", new TokenStream() {
private String[] tokens = new String[] {"term1", "term2", "term3", "term2"};
private int index = 0;
public Token next(final Token reusableToken) throws IOException {
assert reusableToken != null;
if (index == tokens.length) {
return null;
} else {
return reusableToken.reinit(tokens[index++], 0, 0);
}
}
}, TermVector.NO));
writer.addDocument(doc);
writer.flush();
SegmentInfo info = writer.newestSegment();
writer.close();
SegmentReader reader = SegmentReader.get(info);
TermPositions termPositions = reader.termPositions(new Term("preanalyzed", "term1"));
assertTrue(termPositions.next());
assertEquals(1, termPositions.freq());
assertEquals(0, termPositions.nextPosition());
termPositions.seek(new Term("preanalyzed", "term2"));
assertTrue(termPositions.next());
assertEquals(2, termPositions.freq());
assertEquals(1, termPositions.nextPosition());
assertEquals(3, termPositions.nextPosition());
termPositions.seek(new Term("preanalyzed", "term3"));
assertTrue(termPositions.next());
assertEquals(1, termPositions.freq());
assertEquals(2, termPositions.nextPosition());
}
/**
* Test adding two fields with the same name, but
* with different term vector setting (LUCENE-766).
*/
public void testMixedTermVectorSettingsSameField() throws Exception {
Document doc = new Document();
// f1 first without tv then with tv
doc.add(new Field("f1", "v1", Store.YES, Index.NOT_ANALYZED, TermVector.NO));
doc.add(new Field("f1", "v2", Store.YES, Index.NOT_ANALYZED, TermVector.WITH_POSITIONS_OFFSETS));
// f2 first with tv then without tv
doc.add(new Field("f2", "v1", Store.YES, Index.NOT_ANALYZED, TermVector.WITH_POSITIONS_OFFSETS));
doc.add(new Field("f2", "v2", Store.YES, Index.NOT_ANALYZED, TermVector.NO));
RAMDirectory ram = new RAMDirectory();
IndexWriter writer = new IndexWriter(ram, new StandardAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
writer.addDocument(doc);
writer.close();
_TestUtil.checkIndex(ram);
IndexReader reader = IndexReader.open(ram);
// f1
TermFreqVector tfv1 = reader.getTermFreqVector(0, "f1");
assertNotNull(tfv1);
assertEquals("the 'with_tv' setting should rule!",2,tfv1.getTerms().length);
// f2
TermFreqVector tfv2 = reader.getTermFreqVector(0, "f2");
assertNotNull(tfv2);
assertEquals("the 'with_tv' setting should rule!",2,tfv2.getTerms().length);
}
}