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returned values are empty!
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created by <a href="http://community.jboss.org/people/aupres">Joseph Hwang</a> in <i>EJB3</i> - <a href="http://community.jboss.org/message/621968#621968">View the full discussion</a>
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<div class="jive-rendered-content"><p>I coded 2 entity class and joined them with @ManyToOne annotation like below</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>- Members.java</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Entity<br/>@Table(name = "family")<br/>public class Members implements Serializable {<br/>    @Id<br/>    @Column(name = "EMP_ID")<br/>    private String id ;</p><p>    </p><p>   @Column(name = "EMP_Passwd")<br/>    private String passwd ;<br/>    <br/>    @Column(name = "EMP_Name")<br/>    private String name ;</p><p>    </p><p>    @Column(name="EMP_Record")<br/>    @OneToMany(fetch=FetchType.EAGER, mappedBy="member", cascade=CascadeType.ALL)<br/>    private List<Records> record;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    ...getter and setter method...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    </p><p>    public List<Records> getRecord() {<br/>       return record;<br/>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public void setRecord(List<Records> record) {<br/>       this.record = record;<br/>    }</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>- Records.java</p><p>@Entity<br/>@Table(name = "info")<br/>public class Records implements Serializable {<br/>    <br/>   @Id<br/>   @GeneratedValue(strategy=GenerationType.AUTO)<br/>    @Column(name = "EMP_ID")<br/>    private int i;<br/>    <br/>    @ManyToOne(fetch=FetchType.EAGER, cascade=CascadeType.ALL)<br/>    @JoinColumn(name="EMP_Record")<br/>    private Members member; </p><p>    </p><p>   @Column(name = "EMP_Bank_Account")<br/>    private String account;</p><p>    </p><p>   @Column(name = "EMP_Hobby")<br/>    private String hobby;</p><p>    </p><p>    @Column(name = "EMP_Phone")<br/>    private int phone;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    ...getter and setter method..</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>EntityManager.persist is OK. Data were inserted well. But Members.getRecord() method is problem.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In Bean class I coded to return value List<Records> like below</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Stateless<br/>public class MappingTestBean implements IMappingTestPort {<br/> <br/>    @PersistenceContext(unitName="MyFamily")<br/>    EntityManager em;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public List<Records> getFamilyMember(String name) {<br/>        // TODO Auto-generated method stub<br/>        Members m = (Members)em.find(Members.class, name);<strong> // EntityManager.find() works well</strong><br/>        System.out.println(m.toString());<strong> // The method prints some value</strong><br/>        List<Records> records = m.getRecord(); <strong>// getRecord() return empty value</strong><br/>        System.out.println(records.toString());<br/>  <br/>        return records;</p><p>   }</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>in console</p><p>Joined select is executed well.</p><p>[STDOUT] Hibernate: select members0_.EMP_ID as EMP1_49_1_, members0_.EMP_Name as EMP2_49_1_, members0_.EMP_Passwd as EMP3_49_1_, record1_.EMP_Record as EMP5_3_, record1_.EMP_ID as EMP1_3_, record1_.EMP_ID as EMP1_50_0_, record1_.EMP_Bank_Account as EMP2_50_0_, record1_.EMP_Hobby as EMP3_50_0_, record1_.EMP_Record as EMP5_50_0_, record1_.EMP_Phone as EMP4_50_0_ from family members0_ left outer join info record1_ on members0_.EMP_ID=record1_.EMP_Record where members0_.EMP_ID=?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But records value is empty nor null.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I need your advice! Thanks in advance.</p></div>
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