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Sun Java System Application Server Platform Edition 9 Release Notes
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ChapterĀ 3 Known Issues and Limitations
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Java Persistence API
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A query selecting a relationship field does not include null in the query result.
> Solution
Sun Java System Application Server Platform Edition 9 Release Notes
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: Accessing a LAZY initialized relationship from client side sometimes causes a NullPointerException.
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: A query selecting a JOIN identification variable defined for a single valued relationship field may result in invalid SQL.
Solution
Select a state field from the related instance.
SELECT o.customer.customerId FROM Order o WHERE ...
Previous
: Accessing a LAZY initialized relationship from client side sometimes causes a NullPointerException.
Next
: A query selecting a JOIN identification variable defined for a single valued relationship field may result in invalid SQL.
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