//$Id: EntityLoader.java 7652 2005-07-26 05:51:47Z oneovthafew $ package org.hibernate.loader.entity; import java.util.Map; import org.hibernate.HibernateException; import org.hibernate.LockMode; import org.hibernate.MappingException; import org.hibernate.engine.SessionFactoryImplementor; import org.hibernate.engine.SessionImplementor; import org.hibernate.loader.JoinWalker; import org.hibernate.persister.entity.OuterJoinLoadable; import org.hibernate.type.Type; /** * Loads an entity instance using outerjoin fetching to fetch associated entities. * <br> * The <tt>EntityPersister</tt> must implement <tt>Loadable</tt>. For other entities, * create a customized subclass of <tt>Loader</tt>. * * @author Gavin King */ public class EntityLoader extends AbstractEntityLoader { private final boolean batchLoader; public EntityLoader( OuterJoinLoadable persister, LockMode lockMode, SessionFactoryImplementor factory, Map enabledFilters) throws MappingException { this(persister, 1, lockMode, factory, enabledFilters); } 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 EntityLoader( OuterJoinLoadable persister, String[] uniqueKey, Type uniqueKeyType, int batchSize, LockMode lockMode, SessionFactoryImplementor factory, Map enabledFilters) throws MappingException { super(persister, uniqueKeyType, factory, enabledFilters); JoinWalker walker = new EntityJoinWalker( persister, uniqueKey, batchSize, lockMode, factory, enabledFilters ); initFromWalker( walker ); postInstantiate(); batchLoader = batchSize > 1; log.debug( "Static select for entity " + entityName + ": " + getSQLString() ); } public Object loadByUniqueKey(SessionImplementor session, Object key) throws HibernateException { return load(session, key, null, null); } protected boolean isSingleRowLoader() { return !batchLoader; } }