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https://issues.apache.org/jira/browse/STREAMPIPES-170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17639010#comment-17639010
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Dominik Riemer commented on STREAMPIPES-170:
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This issue has been migrated to https://github.com/apache/streampipes/issues/325
> NullPointer in JS Evaluator if no event is returned
> ---------------------------------------------------
>
> Key: STREAMPIPES-170
> URL: https://issues.apache.org/jira/browse/STREAMPIPES-170
> Project: StreamPipes
> Issue Type: Bug
> Components: Pipeline Elements
> Reporter: Philipp Zehnder
> Assignee: Philipp Zehnder
> Priority: Major
> Fix For: 0.67.0
>
>
> Currently users must return an event. It should also be possible to filter
> events out of the data stream. In that case nothing should be returned.
> e.g.:
> if (value > 5) {
> return event;
> }
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