I found out that the simple parent-child example I gave, does not produce the
selection statements I was talking about. Instead a parent-child-grandchild
relation does produce the problem.
I used the following classes to test (the getters and setters are removed here)
:
|
| // Parent
|
| @Entity(access = AccessType.FIELD)
| @Table(name="t_tests", schema="grid")
| @SequenceGenerator(name="TestBeanSequence", sequenceName="grid.s_tests")
| public class TestBean implements Serializable {
|
| @Id(generate=GeneratorType.SEQUENCE, generator="TestBeanSequence")
| private Integer id;
|
| @Column(length=255)
| private String someText;
|
| @Basic(temporalType = TemporalType.TIMESTAMP)
| private Date someDate;
|
| private Boolean someBoolean;
|
| @OneToMany(targetEntity=TestChildBean.class,
| mappedBy="test",
| cascade=CascadeType.ALL,
| fetch=FetchType.LAZY)
| private List<TestChildBean> testChildren;
| }
|
|
| // Child
|
| @Entity(access = AccessType.FIELD)
| @Table(name="t_testchilds", schema="grid")
| @SequenceGenerator(name="TestChildBeanSequence",
sequenceName="grid.s_testchilds")
| public class TestChildBean {
|
| @Id(generate=GeneratorType.SEQUENCE, generator="TestChildBeanSequence")
| private Integer id;
|
| @Column(length=20, nullable=false)
| private String name;
|
| @ManyToOne(targetEntity=TestBean.class, fetch=FetchType.LAZY)
| @JoinColumn(name="test_id", nullable = false)
| private TestBean test;
|
| @OneToMany(targetEntity=TestGrandChildBean.class,
| mappedBy="testChild",
| cascade=CascadeType.ALL,
| fetch=FetchType.LAZY)
| private List<TestGrandChildBean> testGrandChildren;
| }
|
| // Grandchild
|
| @Entity(access = AccessType.FIELD)
| @Table(name="t_testgrandchilds", schema="grid")
| @SequenceGenerator(name="TestGrandChildBeanSequence",
sequenceName="grid.s_testgrandchilds")
| public class TestGrandChildBean {
|
| @Id(generate=GeneratorType.SEQUENCE,
generator="TestGrandChildBeanSequence")
| private Integer id;
|
| @Column(length=20, nullable=false)
| private String name;
|
| @ManyToOne(targetEntity=TestChildBean.class, fetch=FetchType.LAZY)
| @JoinColumn(name="testchild_id", nullable = false)
| private TestChildBean testChild;
| }
|
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3914539#3914539
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3914539
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