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Posted to dev@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2016/03/23 23:18:25 UTC

[jira] [Created] (CALCITE-1166) Disallow sub-classes of RelOptRuleOperand

Julian Hyde created CALCITE-1166:
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             Summary: Disallow sub-classes of RelOptRuleOperand
                 Key: CALCITE-1166
                 URL: https://issues.apache.org/jira/browse/CALCITE-1166
             Project: Calcite
          Issue Type: Bug
            Reporter: Julian Hyde
            Assignee: Julian Hyde


Disallow sub-classes of {{RelOptRuleOperand}}. The only reason that people have sub-classed {{RelOptRuleOperand}} is to override the {{boolean matches(RelNode)}} method, and you can now achieve that by supplying a {{Predicate}} to the constructor.

Next release, we will deprecate {{RelOptRuleOperand}}'s protected constructor and create a new private or package-protected one. Later we will remove that constructor.



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