//$Id: CascadeEntityJoinWalker.java 9889 2006-05-05 01:24:12Z [email protected] $ package org.hibernate.loader.entity; import org.hibernate.FetchMode; import org.hibernate.LockMode; import org.hibernate.MappingException; import org.hibernate.engine.CascadeStyle; import org.hibernate.engine.CascadingAction; import org.hibernate.engine.SessionFactoryImplementor; import org.hibernate.loader.AbstractEntityJoinWalker; import org.hibernate.persister.entity.OuterJoinLoadable; import org.hibernate.type.AssociationType; import org.hibernate.util.CollectionHelper; public class CascadeEntityJoinWalker extends AbstractEntityJoinWalker { private final CascadingAction cascadeAction; public CascadeEntityJoinWalker(OuterJoinLoadable persister, CascadingAction action, SessionFactoryImplementor factory) throws MappingException { super( persister, factory, CollectionHelper.EMPTY_MAP ); this.cascadeAction = action; StringBuffer whereCondition = whereString( getAlias(), persister.getIdentifierColumnNames(), 1 ) //include the discriminator and class-level where, but not filters .append( persister.filterFragment( getAlias(), CollectionHelper.EMPTY_MAP ) ); initAll( whereCondition.toString(), "", LockMode.READ ); } protected boolean isJoinedFetchEnabled(AssociationType type, FetchMode config, CascadeStyle cascadeStyle) { return ( type.isEntityType() || type.isCollectionType() ) && ( cascadeStyle==null || cascadeStyle.doCascade(cascadeAction) ); } protected boolean isTooManyCollections() { return countCollectionPersisters(associations)>0; } public String getComment() { return "load " + getPersister().getEntityName(); } }