Knut Anders Hatlen created DERBY-5868:
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Summary: Move java.sql.Wrapper implementations to base classes on
the client
Key: DERBY-5868
URL: https://issues.apache.org/jira/browse/DERBY-5868
Project: Derby
Issue Type: Improvement
Components: JDBC
Affects Versions: 10.10.0.0
Reporter: Knut Anders Hatlen
Assignee: Knut Anders Hatlen
The client classes that implement java.sql.Wrapper, implement the interface in
the leaf classes instead of the base classes. This is because unwrap() has a
generic signature, so it could not be in the base classes as long as they had
to be compatible with Java 1.4.
For example, in the statement class hierarchy, we implement unwrap() in
Statement40, PreparedStatement40 and CallableStatement40. Now that we compile
the client with source level 1.5, we can move the unwrap() method to the
Statement class and eliminate the duplication.
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