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A new issue has been created in JIRA.
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http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-267
Here is an overview of the issue:
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Key: HB-267
Summary: ObjectNotFoundException is thrown instead of setting the object to null
Type: Bug
Status: Unassigned
Priority: Major
Project: Hibernate2
Components:
core
Assignee:
Reporter: abe zafar
Created: Sat, 16 Aug 2003 1:12 AM
Updated: Sat, 16 Aug 2003 1:12 AM
Environment: JDK1.4
Description:
Class A is associated with class B by a many-to-one relationship. Class B has a composite primary key which is composed of two columns, these two columns are used as foreign keys in class A.
Hiberate creates the composite key for class B from the values of these two columns, but when one of the column's value is null the composite key created will not refer to a row in table B. As a result Hibernate throws an ObjectNotFoundException.
I would have expected Hibernate to simply give a value of null for that instance of B instead of throwing the exception.
In a database schema where the foreign key constraints are enforced this would not be a problem, but when that constraint is not present it is definitely a problem.
Is there a workaround to this issue?
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