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https://issues.apache.org/jira/browse/SOLR-8337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15026025#comment-15026025
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Dennis Gove commented on SOLR-8337:
-----------------------------------
I might change the operationExpressions line to get operands of type
ReduceOperation.class. This would ensure that only expressions adhering to the
ReduceOperation interface are returned. That said, from a user perspective it
might be nice to be told you provided a StreamOperation when a ReduceOperation
is expected.
{code}
List<StreamExpression> operationExpressions =
factory.getExpressionOperandsRepresentingTypes(expression,
ReduceOperation.class);
{code}
> Add ReduceOperation Interface
> -----------------------------
>
> Key: SOLR-8337
> URL: https://issues.apache.org/jira/browse/SOLR-8337
> Project: Solr
> Issue Type: Bug
> Reporter: Joel Bernstein
> Attachments: SOLR-8337.patch, SOLR-8337.patch
>
>
> This is a very simple ticket to create new interface that extends the
> StreamOperation. The interface will be called the ReduceOperation.
> In the near future the ReducerStream will be changed to accept a
> ReduceOperation. This will allow users to pass in the specific reduce
> algorithm to the ReducerStream, making the ReducerStream much more powerful.
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