[jira] [Created] (NIFI-10869) ExtractText processor - RegEx captured twice

[Luigi De Giovanni (Jira)]

Luigi De Giovanni created NIFI-10869:
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             Summary: ExtractText processor - RegEx captured twice
                 Key: NIFI-10869
                 URL: https://issues.apache.org/jira/browse/NIFI-10869
             Project: Apache NiFi
          Issue Type: Bug
    Affects Versions: 1.18.0
            Reporter: Luigi De Giovanni
         Attachments: image (1).png, image (2).png, image.png

Hi,

There is an issue with the ExtractText processor, in the attempt of creating 
FlowFile attributes from FlowFile contents.

When creating a custom property with a regex value that does not contain named 
groups, the value captured in the group is added as 2 different attributes.

E.G.
||Property Name||Property Value||Expected FlowFile Attribute||Actual outcome||
|request.param.alpha|<regex for 
alpha>|request.param.alpha=alpha|request.param.alpha=alpha
request.param.alpha.1=alpha|


Reading the documentation, this might even be an expected behaviour, but if so, 
it is preferable to have the captured value only as a single attribute, without 
duplication.

Please see the attachment for a real example

 

 



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