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one to many bidirectional self reference - problem [message #988974]

Tue, 04 December 2012 06:51

vamsi raghava

Messages: 2
Registered: December 2012

Junior Member

Hi All,

I have self reference one to many bidirectional relationship.
while persisting a child i am doing the following.

1. getParentById(parentId);
2. parent.getChildern().add(child);

The children is getting persisted. I could even see the relationship column getting populated (parentID is getting populated in childs "parentID" column ).

problem is when i retrieve the parent with id and try to get the children of that parent i am not getting, even though the DB shows relation ship.

1. getParentById(parentId);
2. parent.getChildren(); // getting emptyList here.

Even checked the logs, could see the SELECT query for the parent but no query is fired when i say parent.getChildren(). "lazyLoading" is enabled.

The same scenario works fine with Junits in standalone environment.

In weblogic10.3.5 with eclipselink version 2.4.0 ... we are facing this problem.

Thank You.

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Re: one to many bidirectional self reference - problem [message #989104 is a reply to message #988974]

Tue, 04 December 2012 15:43

James Sutherland

Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

You need to set both sides of any relationship. Otherwise your objects are corrupt (in the cache).

Refreshing the object will reset it to the database state, but you need to fix your code to maintain both sides of the relationship.

James : Wiki : Book : Blog : Twitter

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