/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.test.compression;
import java.util.List;
import java.util.zip.DataFormatException;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.document.CompressionTools;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.queryparser.classic.ParseException;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.hibernate.Session;
import org.hibernate.search.FullTextQuery;
import org.hibernate.search.FullTextSession;
import org.hibernate.search.Search;
import org.hibernate.search.test.SearchTestBase;
import org.hibernate.search.testsupport.junit.SkipOnElasticsearch;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
/**
* @author Sanne Grinovero
* @author Hardy Ferentschik
*/
@Category(SkipOnElasticsearch.class) // Compression is specific to the Lucene backend
public class CompressionTest extends SearchTestBase {
/**
* Verifies the fields are really stored in compressed format
*
* @throws Exception in case the test fails
*/
@Test
public void testFieldWasCompressed() throws Exception {
IndexReader indexReader = getSearchFactory().getIndexReaderAccessor().open( LargeDocument.class );
try {
IndexSearcher searcher = new IndexSearcher( indexReader );
TopDocs topDocs = searcher.search( new MatchAllDocsQuery(), null, 10 );
Assert.assertEquals( 1, topDocs.totalHits );
ScoreDoc doc = topDocs.scoreDocs[0];
Document document = indexReader.document( doc.doc );
{
IndexableField[] fields = document.getFields( "title" );
assertEquals( 1, fields.length );
assertNotNull( fields[0].fieldType().indexOptions() );
assertTrue( fields[0].fieldType().stored() );
assertFalse( isCompressed( fields[0] ) );
assertEquals(
"Hibernate in Action, third edition",
fields[0].stringValue()
);
}
{
IndexableField[] fields = document.getFields( "abstract" );
assertEquals( 1, fields.length );
assertTrue( isCompressed( fields[0] ) );
assertEquals(
"<b>JPA2 with Hibernate</b>",
restoreValue( fields[0] )
);
}
{
IndexableField[] fields = document.getFields( "text" );
assertEquals( 1, fields.length );
assertTrue( isCompressed( fields[0] ) );
assertEquals(
"This is a placeholder for the new text that you should write",
restoreValue( fields[0] )
);
}
}
finally {
getSearchFactory().getIndexReaderAccessor().close( indexReader );
}
}
/**
* Verifies the compressed fields are also searchable.
*
* @throws Exception in case the test fails
*/
@Test
public void testCompressedFieldSearch() throws Exception {
assertFindsN( 1, "title:third" );
assertFindsN( 1, "abstract:jpa2" );
assertFindsN( 1, "text:write" );
assertFindsN( 0, "text:jpa2" );
}
private void assertFindsN(int expectedToFind, String queryString) throws ParseException {
openSession().beginTransaction();
try {
FullTextSession fullTextSession = Search.getFullTextSession( getSession() );
QueryParser queryParser = new QueryParser( "", new SimpleAnalyzer() );
Query query = queryParser.parse( queryString );
FullTextQuery fullTextQuery = fullTextSession.createFullTextQuery(
query,
LargeDocument.class
);
@SuppressWarnings("unchecked")
List<LargeDocument> list = fullTextQuery.list();
Assert.assertEquals( expectedToFind, list.size() );
if ( expectedToFind == 1 ) {
Assert.assertEquals( "Hibernate in Action, third edition", list.get( 0 ).getTitle() );
}
}
finally {
getSession().getTransaction().commit();
getSession().close();
}
}
/**
* Verify that projection is able to inflate stored data
*/
@Test
public void testProjectionOnCompressedFields() {
openSession().beginTransaction();
try {
FullTextSession fullTextSession = Search.getFullTextSession( getSession() );
FullTextQuery fullTextQuery = fullTextSession.createFullTextQuery(
new MatchAllDocsQuery(),
LargeDocument.class
);
List list = fullTextQuery.setProjection( "title", "abstract", "text" ).list();
Assert.assertEquals( 1, list.size() );
Object[] results = (Object[]) list.get( 0 );
Assert.assertEquals( "Hibernate in Action, third edition", results[0] );
Assert.assertEquals( "JPA2 with Hibernate", results[1] );
Assert.assertEquals( "This is a placeholder for the new text that you should write", results[2] );
}
finally {
getSession().getTransaction().commit();
getSession().close();
}
}
private String restoreValue(IndexableField field) throws DataFormatException {
if ( field.binaryValue() != null ) {
Assert.assertNull( "we rely on this in the Projection implementation", field.stringValue() );
return CompressionTools.decompressString( field.binaryValue() );
}
else {
return field.stringValue();
}
}
private boolean isCompressed(IndexableField field) {
if ( field.binaryValue() == null ) {
return false;
}
else {
try {
CompressionTools.decompressString( field.binaryValue() );
return true;
}
catch (DataFormatException e) {
return false;
}
}
}
@Override
public Class<?>[] getAnnotatedClasses() {
return new Class[] {
LargeDocument.class
};
}
@Override
@Before
public void setUp() throws Exception {
super.setUp();
Session s = openSession();
s.getTransaction().begin();
s.persist(
new LargeDocument(
"Hibernate in Action, third edition",
"JPA2 with Hibernate",
"This is a placeholder for the new text that you should write"
)
);
s.getTransaction().commit();
s.close();
}
}