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https://issues.apache.org/jira/browse/NIFI-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17030361#comment-17030361
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Matt Burgess commented on NIFI-5547:
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This appears related to NIFI-5115
> Allow ScriptedLookupService to retrieve scripted Properties before service is
> enabled
> -------------------------------------------------------------------------------------
>
> Key: NIFI-5547
> URL: https://issues.apache.org/jira/browse/NIFI-5547
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: Matt Burgess
> Priority: Major
>
> Currently, any properties defined in a script for ScriptedLookupService do
> not get added to the ScriptedLookupService dialog until the service is
> enabled. This defeats the purpose of scripted properties as some may be
> required, and enabling the service can instantly render it invalid.
> It would be better if ScriptedLookupService worked like
> InvokeScriptedProcessor in the sense that the properties are queried when the
> ScriptedLookupService dialog is "saved"/"applied" by hitting the Apply button
> on the dialog. Then the properties will be added the next time the dialog is
> opened, and the correct validation can be performed.
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