[OPENJPA-365] Unexpected behavior on finding a Composite Key entity with a single value.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: kernel
• Environment: Windows XP, JDK 1.5, OpenJPA 0.9.7
• Assignee: Pinaki Poddar
• Reporter: Gene Wu
• Created: 12/Sep/07 01:58
• Updated: 09/Mar/10 18:32
• Resolved: 16/Jul/08 03:59

Description

Entity A has a composite key AId, thus User should look up A with an instance of AId.
Example: em.find(A.class, new AId());

In case of looking up A with a single value, for example: em.find(A.class, 12345). It will through an unexpected exception:
>>>The id type "AId" specfied by persistent type "A" does not have a public string or class + string constructor.

>>>>> org.apache.openjpa.kernel.BrokerImpl.newObjectId
>>>>> (BrokerImpl.java:1120)
>>>>> [WLServer TmsServer] at
>>>>> org.apache.openjpa.kernel.DelegatingBroker.newObjectId
>>>>> (DelegatingBroker.java:254)
>>>>> [WLServer TmsServer] at
>>>>> org.apache.openjpa.persistence.EntityManagerImpl.find
>>>>> (EntityManagerImpl.java:345)

I suppose to get an exception of error id type.

Issue Links

• is duplicated by: OPENJPA-1159 Bad error message for find of an Entity with compound primary key if parameter of wrong class