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https://issues.apache.org/jira/browse/NIFI-462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph Witt resolved NIFI-462.
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Resolution: Duplicate
> ProcessContext should supply an isExpressionLanguagePresent(String) method
> --------------------------------------------------------------------------
>
> Key: NIFI-462
> URL: https://issues.apache.org/jira/browse/NIFI-462
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Priority: Minor
>
> The specific use case that I have in mind for this is if allowing a property
> to contain the Expression Language, it may prevent us from performing
> optimizations such as compiling a Regular Expression (because the value could
> change for each FlowFile). If we know that no Expression Language is present,
> we can go ahead and compile it once.
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