Package org.hibernate.search.test.shards

Source Code of org.hibernate.search.test.shards.ShardsTest

// $Id: ShardsTest.java 16554 2009-05-13 12:38:19Z hardy.ferentschik $
package org.hibernate.search.test.shards;

import java.io.File;
import java.util.List;

import org.hibernate.search.test.SearchTestCase;
import org.hibernate.search.util.FileHelper;
import org.hibernate.search.store.RAMDirectoryProvider;
import org.hibernate.search.store.FSDirectoryProvider;
import org.hibernate.search.store.IdHashShardingStrategy;
import org.hibernate.search.store.DirectoryProvider;
import org.hibernate.search.Environment;
import org.hibernate.search.FullTextSession;
import org.hibernate.search.Search;
import org.hibernate.cfg.Configuration;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.apache.lucene.analysis.StopAnalyzer;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.TermDocs;
import org.apache.lucene.index.Term;

/**
* @author Emmanuel Bernard
*/
public class ShardsTest extends SearchTestCase {


  protected void configure(Configuration cfg) {
    super.configure( cfg );
    cfg.setProperty( "hibernate.search.default.directory_provider", FSDirectoryProvider.class.getName() );
    File sub = getBaseIndexDir();
    cfg.setProperty( "hibernate.search.default.indexBase", sub.getAbsolutePath() );
    cfg.setProperty( Environment.ANALYZER_CLASS, StopAnalyzer.class.getName() );
    //is the default when multiple shards are set up
    //cfg.setProperty( "hibernate.search.Animal.sharding_strategy", IdHashShardingStrategy.class );
    cfg.setProperty( "hibernate.search.Animal.sharding_strategy.nbr_of_shards", "2" );
    cfg.setProperty( "hibernate.search.Animal.0.indexName", "Animal00" );
  }

  public void testIdShardingStrategy() {
    DirectoryProvider[] dps = new DirectoryProvider[] { new RAMDirectoryProvider(), new RAMDirectoryProvider() };
    IdHashShardingStrategy shardingStrategy = new IdHashShardingStrategy();
    shardingStrategy.initialize( null, dps);
    assertTrue( dps[1] == shardingStrategy.getDirectoryProviderForAddition( Animal.class, 1, "1", null) );
    assertTrue( dps[0] == shardingStrategy.getDirectoryProviderForAddition( Animal.class, 2, "2", null) );
  }

  public void testBehavior() throws Exception {
    Session s = openSession( );
    Transaction tx = s.beginTransaction();
    Animal a = new Animal();
    a.setId( 1 );
    a.setName( "Elephant" );
    s.persist( a );
    a = new Animal();
    a.setId( 2 );
    a.setName( "Bear" );
    s.persist( a );
    tx.commit();

    s.clear();

    tx = s.beginTransaction();
    a = (Animal) s.get(Animal.class, 1);
    a.setName( "Mouse" );
    Furniture fur = new Furniture();
    fur.setColor( "dark blue");
    s.persist( fur );
    tx.commit();

    s.clear();

    tx = s.beginTransaction();
    FullTextSession fts = Search.getFullTextSession( s );
    QueryParser parser = new QueryParser("id", new StopAnalyzer() );

    List results = fts.createFullTextQuery( parser.parse( "name:mouse OR name:bear" ) ).list();
    assertEquals( "Either double insert, single update, or query fails with shards", 2, results.size() );

    results = fts.createFullTextQuery( parser.parse( "name:mouse OR name:bear OR color:blue" ) ).list();
    assertEquals( "Mixing shared and non sharded properties fails", 3, results.size() );
    results = fts.createFullTextQuery( parser.parse( "name:mouse OR name:bear OR color:blue" ) ).list();
    assertEquals( "Mixing shared and non sharded properties fails with indexreader reuse", 3, results.size() );
    for (Object o : results) s.delete( o );
    tx.commit();
    s.close();
  }

  public void testInternalSharding() throws Exception {
    Session s = openSession( );
    Transaction tx = s.beginTransaction();
    Animal a = new Animal();
    a.setId( 1 );
    a.setName( "Elephant" );
    s.persist( a );
    a = new Animal();
    a.setId( 2 );
    a.setName( "Bear" );
    s.persist( a );
    tx.commit();

    s.clear();

    IndexReader reader = IndexReader.open( new File( getBaseIndexDir(), "Animal00" ) );
    try {
      int num = reader.numDocs();
      assertEquals( 1, num );
    }
    finally {
      reader.close();
    }
    reader = IndexReader.open( new File( getBaseIndexDir(), "Animal.1" ) );
    try {
      int num = reader.numDocs();
      assertEquals( 1, num );
    }
    finally {
      reader.close();
    }


    tx = s.beginTransaction();
    a = (Animal) s.get(Animal.class, 1);
    a.setName( "Mouse" );
    tx.commit();

    s.clear();

    reader = IndexReader.open( new File( getBaseIndexDir(), "Animal.1" ) );
    try {
      int num = reader.numDocs();
      assertEquals( 1, num );
      TermDocs docs = reader.termDocs( new Term( "name", "mouse" ) );
      assertTrue( docs.next() );
      org.apache.lucene.document.Document doc = reader.document( docs.doc() );
      assertFalse( docs.next() );
    }
    finally {
      reader.close();
    }

    tx = s.beginTransaction();
    FullTextSession fts = Search.getFullTextSession( s );
    QueryParser parser = new QueryParser("id", new StopAnalyzer() );

    List results = fts.createFullTextQuery( parser.parse( "name:mouse OR name:bear" ) ).list();
    assertEquals( "Either double insert, single update, or query fails with shards", 2, results.size() );
    for (Object o : results) s.delete( o );
    tx.commit();
    s.close();
  }

  protected void setUp() throws Exception {
    File sub = getBaseIndexDir();
    sub.mkdir();
    File[] files = sub.listFiles();
    for (File file : files) {
      if ( file.isDirectory() ) {
        FileHelper.delete( file );
      }
    }
    //super.setUp(); //we need a fresh session factory each time for index set up
    buildSessionFactory( getMappings(), getAnnotatedPackages(), getXmlFiles() );
  }

  protected void tearDown() throws Exception {
    super.tearDown();
    File sub = getBaseIndexDir();
    FileHelper.delete( sub );
  }

  @SuppressWarnings("unchecked")
  protected Class[] getMappings() {
    return new Class[] {
        Animal.class,
        Furniture.class
    };
  }
}
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