[ http://issues.apache.org/jira/browse/DERBY-915?page=all ]
David Van Couvering reassigned DERBY-915:
-----------------------------------------
Assign To: David Van Couvering
> EmbedDatabaseMetadata, EmbedDatabaseMetadata40, and
> client.net.NetDatabaseMetadata40 should not throw a "not implemented"
> exception
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-915
> URL: http://issues.apache.org/jira/browse/DERBY-915
> Project: Derby
> Type: Bug
> Reporter: David Van Couvering
> Assignee: David Van Couvering
>
> Per this email from Lance Andersen, JDBC4 spec lead:
> "The JDBC spec requires DatabaseMetaData to be fully implemented.
> For non DatabaseMetaData methods not implement and not required, a
> SQLException must be thrown and in the case of JDBC 4.0
> SQLFeatureNotSupportedException must be thrown.
> Any drivers which fail to implement DatabaseMetaData methods and throw an
> Exception would not pass the conformance tests.
> HTH
> Lance"
> These metadata calls need to be modified to return either true/false for
> boolean methods, or an empty result set for methods that return result sets.
> The client.am.DatabaseMetadata.getSuperTypes() has a good example of how to
> generate an empty result set:
> String sql = "SELECT CAST(NULL AS VARCHAR(128)) AS TYPE_CAT," +
> "CAST(NULL AS VARCHAR(128)) AS TYPE_SCHEM," +
> "VARCHAR('', 128) AS TYPE_NAME," +
> "CAST(NULL AS VARCHAR(128)) AS SUPERTYPE_CAT," +
> "CAST(NULL AS VARCHAR(128)) AS SUPERTYPE_SCHEM," +
> "VARCHAR('', 128) AS SUPERTYPE_NAME " +
> "FROM SYSIBM.SYSDUMMY1 WHERE 1=0 WITH UR ";
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