[ 
http://issues.apache.org/jira/browse/DERBY-970?page=comments#action_12369672 ] 

Kathey Marsden commented on DERBY-970:
--------------------------------------

Sorry I didn't look at this earlier I have a few  questions as I try to come up 
to speed on the issues.

1) Could you clarify the issue with JDK 1.6?
>From what I understand, the issue is:
 We just don't have access to the JDK 1.6 interfaces because in our build we 
don't build with JDK 1.6.   Is that correct?   If that is the case, can our 
SystemProcedure just call our internal implementation?

2) With your plan will metadata.properties remain as is and we keep the stored 
prepared statements?

3)Could you epxplain how thie factory solution would work a little more?


And a couple of tangental questions:
4)
Do you understand how metadata.properties changes are handled with regard to 
soft upgrade, downgrade, upgrade, etc currentlyy?  I have had on my list for a 
long time to research what is happenning in Derby with this as it was the 
source of intractable upgrade issues in the past and the mechanism that I knew 
of to handle it (dropping the SPS's whenever the version changed) is no longer 
in Derby.  I just haven't been able to get to researching it yet.


5)  Is there a general problem with incompatiblity of compiled Stored Prepared 
Statements  in databases that may have been created with different JVM versions?


On   the earlier suggestions:

Either c or d  would be a fatal blow to client/server compatibility, so they 
have all the appeal of euthanasia for client/server compat.




> Add new metadata methods to network client driver
> -------------------------------------------------
>
>          Key: DERBY-970
>          URL: http://issues.apache.org/jira/browse/DERBY-970
>      Project: Derby
>         Type: Sub-task
>     Reporter: David Van Couvering
>     Assignee: Knut Anders Hatlen

>
> Implement new JDBC 4.0 DatabaseMetaData methods in the client driver:
>   - supportsStoredFunctionsUsingCallSyntax()
>   - autoCommitFailureClosesAllResultSets()
>   - getClientInfoProperties()
>   - providesQueryObjectGenerator()
>   - getSchemas()

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