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Posted to users@nifi.apache.org by Adam Williams <aa...@outlook.com> on 2015/09/23 19:01:42 UTC

ExtractText Capturing Groups Limit (1-40)

I've been playing with the ExtractText processor and added lots of capturing groups, for a single property i split into ~50 capturing groups, but the processor shows a warning that we can only have between 1 & 40 capturing groups.  Is it wrong to go over this?  Just parsing a wide CSV file with a regex, but I've thought of modifying the StandardValidators.createRegexValidator from 40 to 50 for now in the below class and rebuilding.  
https://github.com/apache/nifi/blob/f044ba5d45150a0d17990b4c1a304fbbdf35a010/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ExtractText.java

Re: ExtractText Capturing Groups Limit (1-40)

Posted by Joe Witt <jo...@gmail.com>.

Adam,

We really should just allow it to be configurable.  We tend to be
conservative on such cases but you should have control.  Interested in
filing a JIRA?

Thanks
Joe

On Wed, Sep 23, 2015 at 10:01 AM, Adam Williams
<aa...@outlook.com> wrote:
> I've been playing with the ExtractText processor and added lots of capturing
> groups, for a single property i split into ~50 capturing groups, but the
> processor shows a warning that we can only have between 1 & 40 capturing
> groups.  Is it wrong to go over this?  Just parsing a wide CSV file with a
> regex, but I've thought of modifying the
> StandardValidators.createRegexValidator from 40 to 50 for now in the below
> class and rebuilding.
>
> https://github.com/apache/nifi/blob/f044ba5d45150a0d17990b4c1a304fbbdf35a010/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ExtractText.java