View Javadoc
1   /*
2    * JBoss, Home of Professional Open Source
3    * Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
4    * contributors by the @authors tag. See the copyright.txt in the
5    * distribution for a full listing of individual contributors.
6    *
7    * Licensed under the Apache License, Version 2.0 (the "License");
8    * you may not use this file except in compliance with the License.
9    * You may obtain a copy of the License at
10   * http://www.apache.org/licenses/LICENSE-2.0
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.jboss.as.quickstart.hibernate3.data;
18  
19  import org.hibernate.Criteria;
20  import org.hibernate.Session;
21  import org.hibernate.criterion.Order;
22  import org.jboss.as.quickstart.hibernate3.model.Member;
23  
24  import java.util.List;
25  
26  import javax.annotation.PostConstruct;
27  import javax.enterprise.context.RequestScoped;
28  import javax.enterprise.event.Observes;
29  import javax.enterprise.event.Reception;
30  import javax.enterprise.inject.Produces;
31  import javax.inject.Inject;
32  import javax.inject.Named;
33  import javax.persistence.EntityManager;
34  
35  /**
36   * @author Madhumita Sadhukhan
37   */
38  
39  @RequestScoped
40  public class MemberListProducer {
41      @Inject
42      private EntityManager em;
43  
44      private List<Member> members;
45  
46      // @Named provides access the return value via the EL variable name "members" in the UI (e.g.,
47      // Facelets or JSP view)
48      @Produces
49      @Named
50      public List<Member> getMembers() {
51          return members;
52      }
53  
54      public void onMemberListChanged(@Observes(notifyObserver = Reception.IF_EXISTS) final Member member) {
55          retrieveAllMembersOrderedByName();
56      }
57  
58      @SuppressWarnings("unchecked")
59      @PostConstruct
60      public void retrieveAllMembersOrderedByName() {
61  
62          // using Hibernate Session and Criteria Query via Hibernate Native API
63          Session session = (Session) em.getDelegate();
64          Criteria cb = session.createCriteria(Member.class);
65          cb.addOrder(Order.asc("name"));
66          members = (List<Member>) cb.list();
67  
68      }
69  }