Hibernate: How can I know the children is dirty or not?

Question

There are two Parent/Children relationship entities. And only have the mapping configuration in child's hbm.xml file. Like this:

    <many-to-one 
    name="child"
    class="com.Child"
    update="true"
    insert="true"
    cascade="save-update">
        <column not-null="false" name="PARENT_ID"></column>
   </many-to-one>

No <one-to-many> configuration in parent's hbm.xml.

Now I want to use ClassMetaData to get all the properties from the entity to verify it dirty or not. But I cannot get the child properties from ClassMetaData because it not configured.

But When I use session.saveAndUpdate(parentEntity), Hibernate knows the child is dirty and can update dirty child entity. How the Hibernate do that? Is there anyway that I can get the dirty state of the child entity?

You mean like this: http://stackoverflow.com/questions/5268466/how-does-hibernate-detect-dirty-state-of-an-entity-object ? — Stijn Geukens, Jun 05 '13 at 10:42

score 1 · Answer 1 · answered Jun 06 '13 at 13:29

1

Some googling reveals that there is no 'simple' way. You need to use hibernate interceptors for this. Your use case is explained in this blog.

answered Jun 06 '13 at 13:29

Stijn Geukens

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Hibernate: How can I know the children is dirty or not?

1 Answers1