EJB 3.0 and creating bean .xml files for DataControl

Question

In entity beans I haven't parameter updateble in source for column witch represent Id. I generate Id with TableGenerator strategy.
@TableGenerator(name="TEST_SEQ", initialValue=1, allocationSize=1)
@Column(nullable = false)
@GeneratedValue(strategy=GenerationType.TABLE,generator="TEST_SEQ")
@Id
private Long id;When I create DataControl why some <entity bean>.xml files have IsUpdateable="0" parameter for attribute witch represent Id (primary key) column in entity bean?
<Attribute Name="id" Type="java.lang.Long" IsUpdateable="0"/>In some files this parameter have default value (true), that is it does not show in source!
If I use datacontrol (method findAll for example) with selectOneChoiche component error is:
The selected target attribute has read-only access.Please select an updatable attributeWhen I modify files and after that refresh or create new DataControl I loss my changes in files.

Answer 1

Hi Ric,
This is the test case which describe my problem.
Test entity:
@Entity()
@Table(name="TEST")
@NamedQueries({
    @NamedQuery(name = "Test.findAll", query = "select o from Test o"),
    @NamedQuery(name = "Test.findById ", query = "select o from Testo where o.id = :id")
public class Test extends BaseTest implements Serializable {
    @Id
    @TableGenerator(name="TEST_SEQ", initialValue=1, allocationSize=1)
    @Column(name = "ID", nullable = false)
    @GeneratedValue(strategy=GenerationType.TABLE,generator="TEST_SEQ")
    private Long id;
    private String test;
public String getTest() {
return test;
public String setTest(String param) {
this.test=param;
    public Long getId() {
        return id;
    private void setId(Long id) {
        this.id = id;
   }Base entity:
@MappedSuperclass
public abstract class BaseTest implements Serializable {
    @Column(name = "LASTCHANGE")
    private Timestamp lastChange;
    public MasterEntity() {
    public void setLastChange(Timestamp param) {
      this.lastChange = param;
    public Timestamp getLastChange() {
        return lastChange;
}Main entity:
@Entity()
@Table(name="MAIN")
@NamedQueries({
    @NamedQuery(name = "Test.findAll", query = "select o from Test o"),
    @NamedQuery(name = "Test.findById", query = "select o from Test o where o.id = :id")
public class Main extends BaseTest implements Serializable {
    @Id
    @TableGenerator(name="MAIN_SEQ", initialValue=1, allocationSize=1)
    @Column(name = "ID", nullable = false)
    @GeneratedValue(strategy=GenerationType.TABLE,generator="MAIN_SEQ")
    private Long id;
    @ManyToOne
    @JoinColumn(name = "IDTEST", referencedColumnName="ID")
    private Test test;
    public Long getId() {
        return id;
    private void setId(Long id) {
        this.id = id;
    public Long getTest() {
        return test;
    private void setTest(Test test) {
        this.test = test;
   }The part code of session bean:
public Main findById(Long id){
return em.find(Main.class, id);
}When I create DataControl from this sessionBean, the Test.xml(ENTITY->Test) file is generated.
Test.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<JavaBean xmlns=" http://xmlns.oracle.com/adfm/beanmodel" version="11.1.1.45.24"
          id="Test" Package="package.test"
          BeanClass="package.test.Test"
          isJavaBased="true">
  <Attribute Name="id" IsUpdateable="0" Type="java.lang.Long"/>
  <ConstructorMethod IsCollection="false" Type="void"
                     id="Test"/>
</JavaBean>Questions:
Why attribute "id" have property isUpdatable="0" ?
I didn't specify "update=false" on my entity 'Test' for that column.
In witch case propery isUpdateble have value "0", "1", "2", "true", "false"?