package org.trails.page;

 import org.apache.tapestry.annotations.Bean;

 import org.apache.tapestry.annotations.Lifecycle;

 import org.apache.tapestry.annotations.InjectObject;

 import org.hibernate.validator.InvalidStateException;

 import org.trails.persistence.HibernatePersistenceService;

 import org.trails.persistence.PersistenceException;

 import org.trails.validation.HibernateValidationDelegate;

 public abstract class HibernateEditPage extends EditPage

 {

         @Bean(lifecycle = Lifecycle.REQUEST)

         public abstract HibernateValidationDelegate getHibernateValidationDelegate();

         /**

          * @todo: remove when the components reuse issue goes away.

          */

         public HibernateValidationDelegate getDelegate()

         {

                 return getHibernateValidationDelegate();

         }

         @InjectObject("service:trails.hibernate.PersistenceService")

         public abstract HibernatePersistenceService getHibernatePersistenceService();

         /**

          * @todo: remove when the components reuse issue goes away.

          */

         public HibernatePersistenceService getPersistenceService()

         {

                 return getHibernatePersistenceService();

         }

         @Override

         protected boolean save()

         {

                 if (!getDelegate().getHasErrors())

                 {

                         try

                         {

                                 if (isReferencedByParentPage() && isModelNew())

                                 {

                                         setModel(getPersistenceService().saveCollectionElement(

                                                         getAssociationDescriptor().getAddExpression(), getModel(), getParent()));

                                         setModelNew(false);

                                 } else

                                 {

                                         setModel(getPersistenceService().save(getModel()));

                                 }

                         } catch (PersistenceException pe)

                         {

                                 getDelegate().record(pe);

                                 return false;

                         } catch (InvalidStateException ivex)

                         {

                                 getDelegate().record(getClassDescriptor(), ivex);

                                 return false;

                         }

                         return true;

                 }

                 return false;

         }

 }