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https://issues.apache.org/jira/browse/NIFI-2442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Kawamura updated NIFI-2442:
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Summary: ExternalStateManager should support Expression Language evaluation
(was: Support Expression Language evaluation at onPropertyModified)
> ExternalStateManager should support Expression Language evaluation
> ------------------------------------------------------------------
>
> Key: NIFI-2442
> URL: https://issues.apache.org/jira/browse/NIFI-2442
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Koji Kawamura
>
> Some components have to eagerly get property value change, and do some stuff.
> Sometimes, the target properties support Expression Language (EL).
> However, since current onPropertyModified method only passes String
> representation of property value, we can't evaluate EL in that method
> directly.
> It would be useful if we can use subject-less EL functions (i.e without
> incoming FlowFile) at onPropertyModified, especially with Variable Registry.
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