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https://issues.apache.org/jira/browse/NIFI-4348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16962822#comment-16962822
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ASF subversion and git services commented on NIFI-4348:
-------------------------------------------------------

Commit 3d56e2f26d2943c00f4ffdfe8629c6faf8be4998 in nifi's branch 
refs/heads/master from mtien
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=3d56e2f ]

NIFI-4348 handled NPE in isExpressionLanguagePresent.

Signed-off-by: Pierre Villard <[email protected]>

This closes #3857.


> isExpressionLanguagePresent throws NPE when attribute is null
> -------------------------------------------------------------
>
>                 Key: NIFI-4348
>                 URL: https://issues.apache.org/jira/browse/NIFI-4348
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework
>    Affects Versions: 1.3.0
>            Reporter: Kay-Uwe Moosheimer
>            Assignee: M Tien
>            Priority: Trivial
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The following code throws a NPE:
>     PropertyValue property = context.getProperty(SOME_PROPERTY);
>     if (property.isExpressionLanguagePresent()) {
> when the property is not set (NULL).
> So I have to write
>     PropertyValue property = context.getProperty(SOME_PROPERTY);
>     if (property.isSet() && property.isExpressionLanguagePresent()) {    
> It would be great if the method isExpressionLanguagePresent() checks for NULL 
> and then return false.



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