[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2572) NullPointerException when cascade-merge detached entity graph that contains null component property

[Nguyen Hau Giang (JIRA)]

NullPointerException when cascade-merge detached entity graph that contains null component property
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                 Key: HHH-2572
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2572
             Project: Hibernate3
          Issue Type: Bug
          Components: core
    Affects Versions: 3.2.3
         Environment: hibernate 3.2.3 only
            Reporter: Nguyen Hau Giang
            Priority: Critical
         Attachments: testCase.zip

when merging detached entity graph whose leaf-entity contains null-component property, hibernate 3.2.3 will throw NPE. (leaf-entity level>2)
No exception was thrown in hibenate 3.2.2

Mapping:
Parent -> Child -> GrandChild

All associations is cascade.
GrandChild contains a component property.

Test Case:
parent=<load>;
child=parent.get1Child();

GrandChild grandChild=new GrandChild();
grandChild.setComponent(null);
child.add(grandChild);

evict(parent);//session is closed
...
merge(parent);//merge in new sesson -> THROW NullPointerException

for further detail, see attache test case.



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