001// Copyright 2008, 2010 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.internal.hibernate;
016
017import org.apache.tapestry5.annotations.ImmutableSessionPersistedObject;
018import org.hibernate.Session;
019
020import java.io.Serializable;
021
022/**
023 * Encapsulates a Hibernate entity name with an entity id.
024 */
025@ImmutableSessionPersistedObject
026public class PersistedEntity implements Serializable
027{
028    private static final long serialVersionUID = 897120520279686518L;
029
030    private final String entityName;
031
032    private final Serializable id;
033
034    public PersistedEntity(String entityName, Serializable id)
035    {
036        this.entityName = entityName;
037        this.id = id;
038    }
039
040    public Object restore(Session session)
041    {
042        try
043        {
044            return session.get(entityName, id);
045        }
046        catch (Exception ex)
047        {
048            throw new RuntimeException(HibernateMessages.sessionPersistedEntityLoadFailure(entityName, id, ex));
049        }
050    }
051
052    @Override
053    public String toString()
054    {
055        return String.format("<PersistedEntity: %s(%s)>", entityName, id);
056    }
057}