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

     [ https://issues.apache.org/jira/browse/GEODE-7195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Juan José Ramos Cassella reassigned GEODE-7195:
-----------------------------------------------

    Assignee: Juan José Ramos Cassella

> 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
>            Assignee: Juan José Ramos Cassella
>            Priority: Major
>              Labels: GeodeCommons
>
> 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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