| // Copyright 2008 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.internal.hibernate; |
| |
| import org.apache.tapestry5.internal.services.AbstractSessionPersistentFieldStrategy; |
| import org.apache.tapestry5.services.Request; |
| import org.hibernate.HibernateException; |
| import org.hibernate.Session; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Persists Hibernate entities by storing their id in the session. |
| * |
| * @see org.apache.tapestry5.internal.hibernate.PersistedEntity |
| */ |
| public class EntityPersistentFieldStrategy extends AbstractSessionPersistentFieldStrategy |
| { |
| private final Session session; |
| |
| public EntityPersistentFieldStrategy(Session session, Request request) |
| { |
| super("entity:", request); |
| |
| this.session = session; |
| } |
| |
| @Override |
| protected Object convertApplicationValueToPersisted(Object newValue) |
| { |
| try |
| { |
| String entityName = session.getEntityName(newValue); |
| Serializable id = session.getIdentifier(newValue); |
| |
| return new PersistedEntity(entityName, id); |
| } |
| catch (HibernateException ex) |
| { |
| throw new IllegalArgumentException(HibernateMessages.entityNotAttached(newValue), ex); |
| } |
| } |
| |
| @Override |
| protected Object convertPersistedToApplicationValue(Object persistedValue) |
| { |
| PersistedEntity persisted = (PersistedEntity) persistedValue; |
| |
| return persisted.restore(session); |
| } |
| } |