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.util.Arrays;
import java.util.Collection;
import junit.framework.TestCase;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.MapFieldSelector;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Searcher;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
public class TestParallelReader extends TestCase {
private Searcher parallel;
private Searcher single;
protected void setUp() throws Exception {
single = single();
parallel = parallel();
}
public void testQueries() throws Exception {
queryTest(new TermQuery(new Term("f1", "v1")));
queryTest(new TermQuery(new Term("f1", "v2")));
queryTest(new TermQuery(new Term("f2", "v1")));
queryTest(new TermQuery(new Term("f2", "v2")));
queryTest(new TermQuery(new Term("f3", "v1")));
queryTest(new TermQuery(new Term("f3", "v2")));
queryTest(new TermQuery(new Term("f4", "v1")));
queryTest(new TermQuery(new Term("f4", "v2")));
BooleanQuery bq1 = new BooleanQuery();
bq1.add(new TermQuery(new Term("f1", "v1")), Occur.MUST);
bq1.add(new TermQuery(new Term("f4", "v1")), Occur.MUST);
queryTest(bq1);
}
public void testFieldNames() throws Exception {
Directory dir1 = getDir1();
Directory dir2 = getDir2();
ParallelReader pr = new ParallelReader();
pr.add(IndexReader.open(dir1));
pr.add(IndexReader.open(dir2));
Collection fieldNames = pr.getFieldNames(IndexReader.FieldOption.ALL);
assertEquals(4, fieldNames.size());
assertTrue(fieldNames.contains("f1"));
assertTrue(fieldNames.contains("f2"));
assertTrue(fieldNames.contains("f3"));
assertTrue(fieldNames.contains("f4"));
}
public void testDocument() throws IOException {
Directory dir1 = getDir1();
Directory dir2 = getDir2();
ParallelReader pr = new ParallelReader();
pr.add(IndexReader.open(dir1));
pr.add(IndexReader.open(dir2));
Document doc11 = pr.document(0, new MapFieldSelector(new String[] {"f1"}));
Document doc24 = pr.document(1, new MapFieldSelector(Arrays.asList(new String[] {"f4"})));
Document doc223 = pr.document(1, new MapFieldSelector(new String[] {"f2", "f3"}));
assertEquals(1, doc11.getFields().size());
assertEquals(1, doc24.getFields().size());
assertEquals(2, doc223.getFields().size());
assertEquals("v1", doc11.get("f1"));
assertEquals("v2", doc24.get("f4"));
assertEquals("v2", doc223.get("f2"));
assertEquals("v2", doc223.get("f3"));
}
public void testIncompatibleIndexes() throws IOException {
// two documents:
Directory dir1 = getDir1();
// one document only:
Directory dir2 = new RAMDirectory();
IndexWriter w2 = new IndexWriter(dir2, new StandardAnalyzer(), true);
Document d3 = new Document();
d3.add(new Field("f3", "v1", Field.Store.YES, Field.Index.TOKENIZED));
w2.addDocument(d3);
w2.close();
ParallelReader pr = new ParallelReader();
pr.add(IndexReader.open(dir1));
try {
pr.add(IndexReader.open(dir2));
fail("didn't get exptected exception: indexes don't have same number of documents");
} catch (IllegalArgumentException e) {
// expected exception
}
}
private void queryTest(Query query) throws IOException {
Hits parallelHits = parallel.search(query);
Hits singleHits = single.search(query);
assertEquals(parallelHits.length(), singleHits.length());
for(int i = 0; i < parallelHits.length(); i++) {
assertEquals(parallelHits.score(i), singleHits.score(i), 0.001f);
Document docParallel = parallelHits.doc(i);
Document docSingle = singleHits.doc(i);
assertEquals(docParallel.get("f1"), docSingle.get("f1"));
assertEquals(docParallel.get("f2"), docSingle.get("f2"));
assertEquals(docParallel.get("f3"), docSingle.get("f3"));
assertEquals(docParallel.get("f4"), docSingle.get("f4"));
}
}
// Fiels 1-4 indexed together:
private Searcher single() throws IOException {
Directory dir = new RAMDirectory();
IndexWriter w = new IndexWriter(dir, new StandardAnalyzer(), true);
Document d1 = new Document();
d1.add(new Field("f1", "v1", Field.Store.YES, Field.Index.TOKENIZED));
d1.add(new Field("f2", "v1", Field.Store.YES, Field.Index.TOKENIZED));
d1.add(new Field("f3", "v1", Field.Store.YES, Field.Index.TOKENIZED));
d1.add(new Field("f4", "v1", Field.Store.YES, Field.Index.TOKENIZED));
w.addDocument(d1);
Document d2 = new Document();
d2.add(new Field("f1", "v2", Field.Store.YES, Field.Index.TOKENIZED));
d2.add(new Field("f2", "v2", Field.Store.YES, Field.Index.TOKENIZED));
d2.add(new Field("f3", "v2", Field.Store.YES, Field.Index.TOKENIZED));
d2.add(new Field("f4", "v2", Field.Store.YES, Field.Index.TOKENIZED));
w.addDocument(d2);
w.close();
return new IndexSearcher(dir);
}
// Fields 1 & 2 in one index, 3 & 4 in other, with ParallelReader:
private Searcher parallel() throws IOException {
Directory dir1 = getDir1();
Directory dir2 = getDir2();
ParallelReader pr = new ParallelReader();
pr.add(IndexReader.open(dir1));
pr.add(IndexReader.open(dir2));
return new IndexSearcher(pr);
}
private Directory getDir1() throws IOException {
Directory dir1 = new RAMDirectory();
IndexWriter w1 = new IndexWriter(dir1, new StandardAnalyzer(), true);
Document d1 = new Document();
d1.add(new Field("f1", "v1", Field.Store.YES, Field.Index.TOKENIZED));
d1.add(new Field("f2", "v1", Field.Store.YES, Field.Index.TOKENIZED));
w1.addDocument(d1);
Document d2 = new Document();
d2.add(new Field("f1", "v2", Field.Store.YES, Field.Index.TOKENIZED));
d2.add(new Field("f2", "v2", Field.Store.YES, Field.Index.TOKENIZED));
w1.addDocument(d2);
w1.close();
return dir1;
}
private Directory getDir2() throws IOException {
Directory dir2 = new RAMDirectory();
IndexWriter w2 = new IndexWriter(dir2, new StandardAnalyzer(), true);
Document d3 = new Document();
d3.add(new Field("f3", "v1", Field.Store.YES, Field.Index.TOKENIZED));
d3.add(new Field("f4", "v1", Field.Store.YES, Field.Index.TOKENIZED));
w2.addDocument(d3);
Document d4 = new Document();
d4.add(new Field("f3", "v2", Field.Store.YES, Field.Index.TOKENIZED));
d4.add(new Field("f4", "v2", Field.Store.YES, Field.Index.TOKENIZED));
w2.addDocument(d4);
w2.close();
return dir2;
}
}
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