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https://issues.apache.org/jira/browse/NIFI-16001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Thomsen resolved NIFI-16001.
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Fix Version/s: 2.13.0
Resolution: Fixed
> String around an expression language in python processor is cut
> ---------------------------------------------------------------
>
> Key: NIFI-16001
> URL: https://issues.apache.org/jira/browse/NIFI-16001
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 2.9.0
> Environment: Podman 5.8.2 with official Nifi image
> Reporter: Fabian Reiber
> Priority: Minor
> Fix For: 2.13.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> I try to use an expression language in a python processor. It works pretty
> fine, but when I use something like "${my_attribute}_foo_bar" (where
> "my_attribute" has the value "hello") as the property value, everything after
> the expression is cut. Just "hello" is shown. If I use a parameter from the
> context like "#\{my_attribute}_foo_bar", it works and the value is
> "hello_foo_bar". I was wondering, if I am doing something wrong. But I found
> the
> [WritePropertyToFlowFile|https://github.com/apache/nifi/blob/rel/nifi-2.9.0/nifi-extension-bundles/nifi-py4j-extension-bundle/nifi-python-test-extensions/src/main/resources/extensions/WritePropertyToFlowFile.py]
> processor and tried it. It shows the same behaviour.
> It can be workarounded with "${my_attribute:append('_foo_bar')}".
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