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From "Joel Bernstein (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SOLR-8763) Add EvalStream to support "computing on the code" use cases
Date Thu, 20 Apr 2017 14:07:04 GMT

     [ https://issues.apache.org/jira/browse/SOLR-8763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joel Bernstein resolved SOLR-8763.
----------------------------------
    Resolution: Duplicate

> Add EvalStream to support "computing on the code" use cases
> -----------------------------------------------------------
>
>                 Key: SOLR-8763
>                 URL: https://issues.apache.org/jira/browse/SOLR-8763
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Joel Bernstein
>            Priority: Minor
>
> Streaming Expression presents interesting opportunities for "computing on the code".
The EvalStream will call toExpression() on an underlying stream and then compile and run the
resulting expression. This will allow developers to write Streaming Expressions that dynamically
build other Streaming Expressions. 
> This type of behavior could probably be already done in the open() method, but having
an EvalStream adds specific support for dynamic generation of Streaming Expressions and should
encourage these types of applications.



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