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https://issues.apache.org/jira/browse/DERBY-4412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen closed DERBY-4412.
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Resolution: Fixed
Fix Version/s: 10.6.0.0
Issue & fix info: (was: [Patch Available])
Committed revision 827035.
> Make getNegation() abstract in BinaryComparisonOperatorNode and
> UnaryComparisonOperatorNode
> -------------------------------------------------------------------------------------------
>
> Key: DERBY-4412
> URL: https://issues.apache.org/jira/browse/DERBY-4412
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 10.6.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Trivial
> Fix For: 10.6.0.0
>
> Attachments: abstract.diff
>
>
> Both BinaryComparisonOperatorNode and UnaryComparisonOperatorNode have a
> method called getNegation() with the following code:
> /* Keep the compiler happy - this method should never be called.
> * We should always be calling the method in a sub-class.
> */
> if (SanityManager.DEBUG)
> SanityManager.ASSERT(false,
> "expected to call getNegation() for
> subclass " +
> getClass().toString());
> return this;
> Instead of relying on asserts to detect missing method overrides at run-time,
> we should make the methods abstract so that such errors are detected by the
> compiler.
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