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https://issues.apache.org/jira/browse/NIFI-1123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009424#comment-15009424
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ASF GitHub Bot commented on NIFI-1123:
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Github user apiri commented on the pull request:
https://github.com/apache/nifi/pull/116#issuecomment-157495716
@jskora Sorry, I think a few of the different contexts from messages
between you, @trkurc and I made communication a bit jumbled.
To that end, I am onboard with regex, but personally, would not want a
second field to the same focus. The issue that is present is more of an issue
with the underlying framework and its handling with EL. What I was suggesting
with the regex validator is applying the validation to an entered string, but
bypassing validation for where these values are specified on a per FlowFile
basis via EL. What is missing is not so much the granularity as it is the
ability to route failures which is currently nonexistent and was some of what
@trkurc was asking about what the appropriate tradeoffs/concessions are given
the current state of the framework. To this idea, I am more for keeping
consistent with how we are now and letting this get addressed with the needed
framework adjustments as we move forward.
To your question regarding deletion, that is certainly not on you or any
extension developer. As highlighted by NIFI-1181/1182, these values are
safeguarded but your processor exposed the bug of where it was not safeguarded
in this context.
> Extend the "Delete Attributes Expression" to support Expression Language
> ------------------------------------------------------------------------
>
> Key: NIFI-1123
> URL: https://issues.apache.org/jira/browse/NIFI-1123
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Joe Skora
> Assignee: Joe Skora
> Priority: Minor
> Labels: easyfix, features, patch
>
> Allow the "Delete Attributes Expression" to accept Expression Language to
> dynamically produce the regular expression to identify attributes to be
> deleted per discussion on
> [NIFI-641|https://issues.apache.org/jira/browse/NIFI-641].
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