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From Juan José Ramos Cassella (Jira) <j...@apache.org>
Subject [jira] [Created] (GEODE-7195) Add BeforeAggregates Callback in QueryObserver
Date Thu, 12 Sep 2019 12:48:00 GMT
Juan José Ramos Cassella created GEODE-7195:
-----------------------------------------------

             Summary: Add BeforeAggregates Callback in QueryObserver
                 Key: GEODE-7195
                 URL: https://issues.apache.org/jira/browse/GEODE-7195
             Project: Geode
          Issue Type: Improvement
          Components: querying
            Reporter: Juan José Ramos Cassella


The interface is used by testing/debugging code to be notified of query events. We should
add a new callback to be invoked *after* executing the query criteria but *before* applying
the aggregate functions and group by clauses:


{code:title=CompiledGroupBySelect.java|borderStyle=solid}
@Override
public SelectResults evaluate(ExecutionContext context) throws FunctionDomainException, TypeMismatchException,
NameResolutionException, QueryInvocationTargetException {
  SelectResults sr = super.evaluate(context);
  // Invoke Listener Here!
  return this.applyAggregateAndGroupBy(sr, context); 
}
{code}




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