org.hibernate.engine.SessionFactoryImplementor Java Examples

public String toLoggableString(Object value, SessionFactoryImplementor factory)
		throws HibernateException {
	if ( value == null ) {
		return "null";
	}
	Map result = new HashMap();
	EntityMode entityMode = tuplizerMapping.guessEntityMode( value );
	if ( entityMode == null ) {
		throw new ClassCastException( value.getClass().getName() );
	}
	Object[] values = getPropertyValues( value, entityMode );
	for ( int i = 0; i < propertyTypes.length; i++ ) {
		result.put( propertyNames[i], propertyTypes[i].toLoggableString( values[i], factory ) );
	}
	return StringHelper.unqualify( getName() ) + result.toString();
}
 

public static UniqueEntityLoader createBatchingEntityLoader(
	final OuterJoinLoadable persister,
	final int maxBatchSize,
	final LockMode lockMode,
	final SessionFactoryImplementor factory,
	final Map enabledFilters)
throws MappingException {

	if ( maxBatchSize>1 ) {
		int[] batchSizesToCreate = ArrayHelper.getBatchSizes(maxBatchSize);
		Loader[] loadersToCreate = new Loader[ batchSizesToCreate.length ];
		for ( int i=0; i<batchSizesToCreate.length; i++ ) {
			loadersToCreate[i] = new EntityLoader(persister, batchSizesToCreate[i], lockMode, factory, enabledFilters);
		}
		return new BatchingEntityLoader(persister, batchSizesToCreate, loadersToCreate);
	}
	else {
		return new EntityLoader(persister, lockMode, factory, enabledFilters);
	}
}
 

public OneToManyLoader(
		QueryableCollection oneToManyPersister, 
		int batchSize, 
		String subquery, 
		SessionFactoryImplementor factory, 
		Map enabledFilters)
throws MappingException {

	super(oneToManyPersister, factory, enabledFilters);
	
	JoinWalker walker = new OneToManyJoinWalker(
			oneToManyPersister, 
			batchSize, 
			subquery, 
			factory, 
			enabledFilters
		);
	initFromWalker( walker );

	postInstantiate();

	log.debug( "Static select for one-to-many " + oneToManyPersister.getRole() + ": " + getSQLString() );
}
 

public String render(List args, SessionFactoryImplementor factory) throws QueryException {
	boolean threeArgs = args.size() > 2;
	Object pattern = args.get(0);
	Object string = args.get(1);
	Object start = threeArgs ? args.get(2) : null;

	StringBuffer buf = new StringBuffer();
	if (threeArgs) buf.append('(');
	buf.append("position(").append( pattern ).append(" in ");
	if (threeArgs) buf.append( "substring(");
	buf.append( string );
	if (threeArgs) buf.append( ", " ).append( start ).append(')');
	buf.append(')');
	if (threeArgs) buf.append('+').append( start ).append("-1)");
	return buf.toString();
}
 

public EntityLoader(
		OuterJoinLoadable persister, 
		int batchSize, 
		LockMode lockMode,
		SessionFactoryImplementor factory, 
		Map enabledFilters) 
throws MappingException {
	this( 
			persister, 
			persister.getIdentifierColumnNames(), 
			persister.getIdentifierType(), 
			batchSize,
			lockMode,
			factory, 
			enabledFilters 
		);
}
 

public SubselectOneToManyLoader(
		QueryableCollection persister, 
		String subquery,
		Collection entityKeys,
		QueryParameters queryParameters,
		Map namedParameterLocMap,
		SessionFactoryImplementor factory, 
		Map enabledFilters)
throws MappingException {
	
	super(persister, 1, subquery, factory, enabledFilters);

	keys = new Serializable[ entityKeys.size() ];
	Iterator iter = entityKeys.iterator();
	int i=0;
	while ( iter.hasNext() ) {
		keys[i++] = ( (EntityKey) iter.next() ).getIdentifier();
	}
	
	this.namedParameters = queryParameters.getNamedParameters();
	this.types = queryParameters.getFilteredPositionalParameterTypes();
	this.values = queryParameters.getFilteredPositionalParameterValues();
	this.namedParameterLocMap = namedParameterLocMap;
	
}
 

public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
throws HibernateException {

	String[] columns = criteriaQuery.getColumnsUsingProjection(criteria, propertyName);
	Type type = criteriaQuery.getTypeUsingProjection(criteria, propertyName);
	StringBuffer fragment = new StringBuffer();
	if (columns.length>1) fragment.append('(');
	SessionFactoryImplementor factory = criteriaQuery.getFactory();
	int[] sqlTypes = type.sqlTypes( factory );
	for ( int i=0; i<columns.length; i++ ) {
		boolean lower = ignoreCase && 
				( sqlTypes[i]==Types.VARCHAR || sqlTypes[i]==Types.CHAR );
		if (lower) {
			fragment.append( factory.getDialect().getLowercaseFunction() )
				.append('(');
		}
		fragment.append( columns[i] );
		if (lower) fragment.append(')');
		fragment.append( getOp() ).append("?");
		if ( i<columns.length-1 ) fragment.append(" and ");
	}
	if (columns.length>1) fragment.append(')');
	return fragment.toString();

}
 

protected BasicCollectionLoader(
		QueryableCollection collectionPersister, 
		int batchSize, 
		String subquery, 
		SessionFactoryImplementor factory, 
		Map enabledFilters)
throws MappingException {
	
	super(collectionPersister, factory, enabledFilters);
	
	JoinWalker walker = new BasicCollectionJoinWalker(
			collectionPersister, 
			batchSize, 
			subquery, 
			factory, 
			enabledFilters
		);
	initFromWalker( walker );

	postInstantiate();

	log.debug( "Static select for collection " + collectionPersister.getRole() + ": " + getSQLString() );
}
 

public String render(List args, SessionFactoryImplementor factory) {
	final boolean hasArgs = !args.isEmpty();
	StringBuffer buf = new StringBuffer();
	buf.append( getName() );
	if ( hasArgs ) {
		buf.append( "(" );
		for ( int i = 0; i < args.size(); i++ ) {
			buf.append( args.get( i ) );
			if ( i < args.size() - 1 ) {
				buf.append( ", " );
			}
		}
		buf.append( ")" );
	}
	return buf.toString();
}
 

public EntityPersister getSubclassEntityPersister(Object instance, SessionFactoryImplementor factory, EntityMode entityMode) {
	if ( !hasSubclasses() ) {
		return this;
	}
	else {
		// TODO : really need a way to do something like :
		//      getTuplizer(entityMode).determineConcreteSubclassEntityName(instance)
		Class clazz = instance.getClass();
		if ( clazz == getMappedClass( entityMode ) ) {
			return this;
		}
		else {
			String subclassEntityName = getSubclassEntityName( clazz );
			if ( subclassEntityName == null ) {
				throw new HibernateException(
						"instance not of expected entity type: " + clazz.getName() +
						" is not a: " + getEntityName()
					);
			}
			else {
				return factory.getEntityPersister( subclassEntityName );
			}
		}
	}
}
 

/**
 * {@inheritDoc}
 */
public int getHashCode(Object x, EntityMode entityMode, SessionFactoryImplementor factory) {
	EntityPersister persister = factory.getEntityPersister(associatedEntityName);
	if ( !persister.canExtractIdOutOfEntity() ) {
		return super.getHashCode(x, entityMode);
	}

	final Serializable id;
	if (x instanceof HibernateProxy) {
		id = ( (HibernateProxy) x ).getHibernateLazyInitializer().getIdentifier();
	}
	else {
		id = persister.getIdentifier(x, entityMode);
	}
	return persister.getIdentifierType().getHashCode(id, entityMode, factory);
}
 

/**
 * Generate an info message string relating to a series of entities.
 *
 * @param persister The persister for the entities
 * @param ids The entity id values
 * @param factory The session factory
 * @return An info string, in the form [FooBar#<1,2,3>]
 */
public static String infoString(
		EntityPersister persister, 
		Serializable[] ids, 
		SessionFactoryImplementor factory) {
	StringBuffer s = new StringBuffer();
	s.append( '[' );
	if( persister == null ) {
		s.append( "<null EntityPersister>" );
	}
	else {
		s.append( persister.getEntityName() );
		s.append( "#<" );
		for ( int i=0; i<ids.length; i++ ) {
			s.append( persister.getIdentifierType().toLoggableString( ids[i], factory ) );
			if ( i < ids.length-1 ) {
				s.append( ", " );
			}
		}
		s.append( '>' );
	}
	s.append( ']' );

	return s.toString();

}
 

public static CollectionInitializer createBatchingOneToManyInitializer(
	final QueryableCollection persister,
	final int maxBatchSize,
	final SessionFactoryImplementor factory,
	final Map enabledFilters)
throws MappingException {

	if ( maxBatchSize>1 ) {
		int[] batchSizesToCreate = ArrayHelper.getBatchSizes(maxBatchSize);
		Loader[] loadersToCreate = new Loader[ batchSizesToCreate.length ];
		for ( int i=0; i<batchSizesToCreate.length; i++ ) {
			loadersToCreate[i] = new OneToManyLoader(persister, batchSizesToCreate[i], factory, enabledFilters);
		}
		return new BatchingCollectionInitializer(persister, batchSizesToCreate, loadersToCreate);
	}
	else {
		return new OneToManyLoader(persister, factory, enabledFilters);
	}
}
 

public BasicCollectionJoinWalker(
		QueryableCollection collectionPersister, 
		int batchSize, 
		String subquery, 
		SessionFactoryImplementor factory, 
		Map enabledFilters)
throws MappingException {

	super(factory, enabledFilters);

	this.collectionPersister = collectionPersister;

	String alias = generateRootAlias( collectionPersister.getRole() );

	walkCollectionTree(collectionPersister, alias);

	List allAssociations = new ArrayList();
	allAssociations.addAll(associations);
	allAssociations.add( new OuterJoinableAssociation( 
			collectionPersister.getCollectionType(),
			null, 
			null, 
			alias, 
			JoinFragment.LEFT_OUTER_JOIN, 
			getFactory(), 
			CollectionHelper.EMPTY_MAP 
		) );

	initPersisters(allAssociations, LockMode.NONE);
	initStatementString(alias, batchSize, subquery);

}
 

protected Connection getConnection() throws SQLException {
    if (sessionFactory instanceof SessionFactoryImplementor) {
        ConnectionProvider cp = ((SessionFactoryImplementor) sessionFactory).getConnectionProvider();
        return cp.getConnection();
    }
    return super.getConnection();
}
 

/**
 * Execute schema creation script, determined by the Configuration object
 * used for creating the SessionFactory. A replacement for Hibernate's
 * SchemaExport class, to be invoked on application setup.
 * <p>Fetch the LocalSessionFactoryBean itself rather than the exposed
 * SessionFactory to be able to invoke this method, e.g. via
 * {@code LocalSessionFactoryBean lsfb = (LocalSessionFactoryBean) ctx.getBean("&mySessionFactory");}.
 * <p>Uses the SessionFactory that this bean generates for accessing a
 * JDBC connection to perform the script.
 * @throws DataAccessException in case of script execution errors
 * @see org.hibernate.cfg.Configuration#generateSchemaCreationScript
 * @see org.hibernate.tool.hbm2ddl.SchemaExport#create
 */
public void createDatabaseSchema() throws DataAccessException {
	logger.info("Creating database schema for Hibernate SessionFactory");
	DataSource dataSource = getDataSource();
	if (dataSource != null) {
		// Make given DataSource available for the schema update.
		configTimeDataSourceHolder.set(dataSource);
	}
	try {
		SessionFactory sessionFactory = getSessionFactory();
		final Dialect dialect = ((SessionFactoryImplementor) sessionFactory).getDialect();
		HibernateTemplate hibernateTemplate = new HibernateTemplate(sessionFactory);
		hibernateTemplate.execute(
			new HibernateCallback<Object>() {
				@Override
				public Object doInHibernate(Session session) throws HibernateException, SQLException {
					Connection con = session.connection();
					String[] sql = getConfiguration().generateSchemaCreationScript(dialect);
					executeSchemaScript(con, sql);
					return null;
				}
			}
		);
	}
	finally {
		if (dataSource != null) {
			configTimeDataSourceHolder.remove();
		}
	}
}
 

public CriteriaJoinWalker(
		final OuterJoinLoadable persister, 
		final CriteriaQueryTranslator translator,
		final SessionFactoryImplementor factory, 
		final CriteriaImpl criteria, 
		final String rootEntityName,
		final Map enabledFilters)
throws HibernateException {
	super(persister, factory, enabledFilters);

	this.translator = translator;

	querySpaces = translator.getQuerySpaces();

	if ( translator.hasProjection() ) {
		resultTypes = translator.getProjectedTypes();
		
		initProjection( 
				translator.getSelect(), 
				translator.getWhereCondition(), 
				translator.getOrderBy(),
				translator.getGroupBy(),
				LockMode.NONE 
			);
	}
	else {
		resultTypes = new Type[] { TypeFactory.manyToOne( persister.getEntityName() ) };

		initAll( translator.getWhereCondition(), translator.getOrderBy(), LockMode.NONE );
	}
	
	userAliasList.add( criteria.getAlias() ); //root entity comes *last*
	userAliases = ArrayHelper.toStringArray(userAliasList);

}
 

/**
 * Generate an info message string relating to a series of managed
 * collections.
 *
 * @param persister The persister for the collections
 * @param ids The id values of the owners
 * @param factory The session factory
 * @return An info string, in the form [Foo.bars#<1,2,3>]
 */
public static String collectionInfoString(
		CollectionPersister persister, 
		Serializable[] ids, 
		SessionFactoryImplementor factory) {
	StringBuffer s = new StringBuffer();
	s.append( '[' );
	if ( persister == null ) {
		s.append( "<unreferenced>" );
	}
	else {
		s.append( persister.getRole() );
		s.append( "#<" );
		for ( int i = 0; i < ids.length; i++ ) {
			// Need to use the identifier type of the collection owner
			// since the incoming is value is actually the owner's id.
			// Using the collection's key type causes problems with
			// property-ref keys...
			s.append( persister.getOwnerEntityPersister().getIdentifierType().toLoggableString( ids[i], factory ) );
			if ( i < ids.length-1 ) {
				s.append( ", " );
			}
		}
		s.append( '>' );
	}
	s.append( ']' );
	return s.toString();
}
 

public CustomOracleSpatialDialect() {
	super();

	InlineFunctionRegistrationManager.registerInlineFunctions(this);

	registerFunction("dwithin", new StandardSQLFunction("SDO_WITHIN_DISTANCE", StandardBasicTypes.STRING));
	registerFunction("spatial_contains", new StandardSQLFunction("SDO_CONTAINS", StandardBasicTypes.BOOLEAN));
	registerFunction("intersection", new StandardSQLFunction("SDO_GEOM.SDO_INTERSECTION", GeometryUserType.TYPE));
	registerFunction("spatial_nn", new StandardSQLFunction("SDO_NN", StandardBasicTypes.BIG_DECIMAL));
	registerFunction("length_spa", new StandardSQLFunction("SDO_GEOM.SDO_LENGTH", StandardBasicTypes.BIG_DECIMAL));
	registerFunction("filter", new StandardSQLFunction("SDO_FILTER", StandardBasicTypes.STRING));
	registerFunction("distance", new StandardSQLFunction("SDO_GEOM.SDO_DISTANCE", StandardBasicTypes.BIG_DECIMAL));
	registerFunction("union", new StandardSQLFunction("SDO_GEOM.SDO_UNION", GeometryUserType.TYPE));
	registerFunction("centroid", new StandardSQLFunction("SDO_GEOM.SDO_CENTROID", GeometryUserType.TYPE));
	registerFunction("covers", new StandardSQLFunction("SDO_COVERS", StandardBasicTypes.STRING));
	registerFunction("coveredby", new StandardSQLFunction("SDO_COVEREDBY", StandardBasicTypes.STRING));
	registerFunction("relate", new StandardSQLFunction("SDO_GEOM.RELATE", StandardBasicTypes.STRING));
	registerFunction("inside", new StandardSQLFunction("SDO_INSIDE", StandardBasicTypes.STRING));
	registerFunction("to_km", new SQLFunctionTemplate(StandardBasicTypes.BIG_DECIMAL, "((?1) * 1.852)"));
	registerFunction("to_nm", new SQLFunctionTemplate(StandardBasicTypes.BIG_DECIMAL, "((?1) / 1.852)"));
	registerFunction("extract", new SQLFunctionTemplate(StandardBasicTypes.LONG, "extract (?1 from (?2))"));
	registerFunction("to_timezone", new SQLFunctionTemplate(StandardBasicTypes.TIMESTAMP, "((?1) + ?2/24)") {
		@Override
		public String render(Type argumentType, List args, SessionFactoryImplementor factory) {
			if (args == null || args.size() != 2) {
				throw new QueryException("to_timezone() requires two arguments");
			}
			if (!((String) args.get(1)).matches("\\-?((1?[0-9])|(2[0-3]))")) {
				throw new QueryException("to_timezone()'s second parameter must be a number from -23 to +23");
			}
			return super.render(argumentType, args, factory);
		}
	});
	registerFunction("latitude", new SQLFunctionTemplate(StandardBasicTypes.STRING, "CASE ?1.Get_GType() WHEN 1 THEN to_char(?1.sdo_point.y) ELSE '' END"));
	registerFunction("longitude",
			new SQLFunctionTemplate(StandardBasicTypes.STRING, "CASE ?1.Get_GType() WHEN 1 THEN to_char(?1.sdo_point.x) ELSE '' END"));
}
 

public BasicCollectionLoader(
		QueryableCollection collectionPersister, 
		int batchSize, 
		SessionFactoryImplementor factory, 
		Map enabledFilters)
throws MappingException {
	this(collectionPersister, batchSize, null, factory, enabledFilters);
}
 

/**
 * Execute schema creation script, determined by the Configuration object
 * used for creating the SessionFactory. A replacement for Hibernate's
 * SchemaValidator class, to be invoked after application startup.
 * <p>Fetch the LocalSessionFactoryBean itself rather than the exposed
 * SessionFactory to be able to invoke this method, e.g. via
 * {@code LocalSessionFactoryBean lsfb = (LocalSessionFactoryBean) ctx.getBean("&mySessionFactory");}.
 * <p>Uses the SessionFactory that this bean generates for accessing a
 * JDBC connection to perform the script.
 * @throws DataAccessException in case of script execution errors
 * @see org.hibernate.cfg.Configuration#validateSchema
 * @see org.hibernate.tool.hbm2ddl.SchemaValidator
 */
public void validateDatabaseSchema() throws DataAccessException {
	logger.info("Validating database schema for Hibernate SessionFactory");
	DataSource dataSource = getDataSource();
	if (dataSource != null) {
		// Make given DataSource available for the schema update.
		configTimeDataSourceHolder.set(dataSource);
	}
	try {
		SessionFactory sessionFactory = getSessionFactory();
		final Dialect dialect = ((SessionFactoryImplementor) sessionFactory).getDialect();
		HibernateTemplate hibernateTemplate = new HibernateTemplate(sessionFactory);
		hibernateTemplate.setFlushMode(HibernateTemplate.FLUSH_NEVER);
		hibernateTemplate.execute(
			new HibernateCallback<Object>() {
				@Override
				public Object doInHibernate(Session session) throws HibernateException, SQLException {
					Connection con = session.connection();
					DatabaseMetadata metadata = new DatabaseMetadata(con, dialect, false);
					getConfiguration().validateSchema(dialect, metadata);
					return null;
				}
			}
		);
	}
	finally {
		if (dataSource != null) {
			configTimeDataSourceHolder.remove();
		}
	}
}
 

private CurrentSessionContext buildCurrentSessionContext() {
	String impl = properties.getProperty( Environment.CURRENT_SESSION_CONTEXT_CLASS );
	// for backward-compatability
	if ( impl == null && transactionManager != null ) {
		impl = "jta";
	}

	if ( impl == null ) {
		return null;
	}
	else if ( "jta".equals( impl ) ) {
		if ( settings.getTransactionFactory().areCallbacksLocalToHibernateTransactions() ) {
			log.warn( "JTASessionContext being used with JDBCTransactionFactory; auto-flush will not operate correctly with getCurrentSession()" );
		}
		return new JTASessionContext( this );
	}
	else if ( "thread".equals( impl ) ) {
		return new ThreadLocalSessionContext( this );
	}
	else if ( "managed".equals( impl ) ) {
		return new ManagedSessionContext( this );
	}
	else {
		try {
			Class implClass = ReflectHelper.classForName( impl );
			return ( CurrentSessionContext ) implClass
					.getConstructor( new Class[] { SessionFactoryImplementor.class } )
					.newInstance( new Object[] { this } );
		}
		catch( Throwable t ) {
			log.error( "Unable to construct current session context [" + impl + "]", t );
			return null;
		}
	}
}
 

public String toLoggableString(Object value, SessionFactoryImplementor factory)
throws HibernateException {
	if ( value == null ) {
		return "null";
	}
	else if ( customLogging ) {
		return ( ( LoggableUserType ) userType ).toLoggableString( value, factory );
	}
	else {
		return toXMLString( value, factory );
	}
}
 

private void compileWithAstQueryTranslator(String hql, boolean scalar) {
	Map replacements = new HashMap();
	QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
	SessionFactoryImplementor factory = getSessionFactoryImplementor();
	QueryTranslator newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
	newQueryTranslator.compile( replacements, scalar );
}
 

/**
 * Generate an info message string relating to a particular managed
 * collection.
 *
 * @param persister The persister for the collection
 * @param id The id value of the owner
 * @param factory The session factory
 * @return An info string, in the form [Foo.bars#1]
 */
public static String collectionInfoString(
		CollectionPersister persister, 
		Serializable id, 
		SessionFactoryImplementor factory) {
	StringBuffer s = new StringBuffer();
	s.append( '[' );
	if ( persister == null ) {
		s.append( "<unreferenced>" );
	}
	else {
		s.append( persister.getRole() );
		s.append( '#' );

		if ( id == null ) {
			s.append( "<null>" );
		}
		else {
			// Need to use the identifier type of the collection owner
			// since the incoming is value is actually the owner's id.
			// Using the collection's key type causes problems with
			// property-ref keys...
			s.append( persister.getOwnerEntityPersister().getIdentifierType().toLoggableString( id, factory ) );
		}
	}
	s.append( ']' );

	return s.toString();
}
 

public String render(List args, SessionFactoryImplementor factory) throws QueryException {
	StringBuffer buf = new StringBuffer().append(begin);
	for ( int i=0; i<args.size(); i++ ) {
		buf.append( args.get(i) );
		if (i<args.size()-1) buf.append(sep);
	}
	return buf.append(end).toString();
}
 

public EntityLoader(
		OuterJoinLoadable persister, 
		LockMode lockMode,
		SessionFactoryImplementor factory, 
		Map enabledFilters) 
throws MappingException {
	this(persister, 1, lockMode, factory, enabledFilters);
}
 

/**
 * Load an instance by a unique key that is not the primary key.
 *
 * @param entityName The name of the entity to load
 * @param uniqueKeyPropertyName The name of the property defining the uniqie key.
 * @param key The unique key property value.
 * @param session The originating session.
 * @return The loaded entity
 * @throws HibernateException generally indicates problems performing the load.
 */
public Object loadByUniqueKey(
		String entityName, 
		String uniqueKeyPropertyName, 
		Object key, 
		SessionImplementor session) throws HibernateException {
	final SessionFactoryImplementor factory = session.getFactory();
	UniqueKeyLoadable persister = ( UniqueKeyLoadable ) factory.getEntityPersister( entityName );

	//TODO: implement caching?! proxies?!

	EntityUniqueKey euk = new EntityUniqueKey(
			entityName, 
			uniqueKeyPropertyName, 
			key, 
			getIdentifierOrUniqueKeyType( factory ),
			session.getEntityMode(), 
			session.getFactory()
	);

	final PersistenceContext persistenceContext = session.getPersistenceContext();
	Object result = persistenceContext.getEntity( euk );
	if ( result == null ) {
		result = persister.loadByUniqueKey( uniqueKeyPropertyName, key, session );
	}
	return result == null ? null : persistenceContext.proxyFor( result );
}
 

/**
 * {@inheritDoc}
 */
public boolean isEqual(Object x, Object y, EntityMode entityMode, SessionFactoryImplementor factory) {
	EntityPersister persister = factory.getEntityPersister(associatedEntityName);
	if ( !persister.canExtractIdOutOfEntity() ) {
		return super.isEqual(x, y, entityMode);
	}

	Serializable xid;
	if (x instanceof HibernateProxy) {
		xid = ( (HibernateProxy) x ).getHibernateLazyInitializer()
				.getIdentifier();
	}
	else {
		xid = persister.getIdentifier(x, entityMode);
	}

	Serializable yid;
	if (y instanceof HibernateProxy) {
		yid = ( (HibernateProxy) y ).getHibernateLazyInitializer()
				.getIdentifier();
	}
	else {
		yid = persister.getIdentifier(y, entityMode);
	}

	return persister.getIdentifierType()
			.isEqual(xid, yid, entityMode, factory);
}
 

/**
 * Creates a new Loader implementation.
 *
 * @param queryTranslator The query translator that is the delegator.
 * @param factory The factory from which this loader is being created.
 * @param selectClause The AST representing the select clause for loading.
 */
public QueryLoader(
		final QueryTranslatorImpl queryTranslator,
        final SessionFactoryImplementor factory,
        final SelectClause selectClause) {
	super( factory );
	this.queryTranslator = queryTranslator;
	initialize( selectClause );
	postInstantiate();
}