Have we considered having precondition validation and postcondition validation. 
  Preconditions could check that the fields are in good condition to be 
transformed.   Postconditions could find errors in events after field 
transformations.

Thanks
Carolyn



On 10/11/16, 1:52 PM, "cestella" <[email protected]> wrote:

>GitHub user cestella opened a pull request:
>
>    https://github.com/apache/incubator-metron/pull/304
>
>    METRON-496: Field transformations are applied after parser validation
>
>    Field transformations are applied after validation, which means that the 
> validation cannot be affected by the transformations. Consider a situation 
> where you get a timestamp field in as a string and the parser validation 
> expects a long. Conversion could be done as part of a field transformation, 
> whereas now it would fail validation.
>
>You can merge this pull request into a Git repository by running:
>
>    $ git pull https://github.com/cestella/incubator-metron METRON-496
>
>Alternatively you can review and apply these changes as the patch at:
>
>    https://github.com/apache/incubator-metron/pull/304.patch
>
>To close this pull request, make a commit to your master/trunk branch
>with (at least) the following in the commit message:
>
>    This closes #304
>    
>----
>commit fa40a3b496a251d55d7fe301b5a839435a4ade7d
>Author: cstella <[email protected]>
>Date:   2016-10-11T17:47:24Z
>
>    METRON-496: Field transformations are applied after parser validation
>
>commit 329a13d2d676701f4284cf216f9d444de5a56986
>Author: cstella <[email protected]>
>Date:   2016-10-11T17:51:10Z
>
>    Merge branch 'master' into METRON-496
>
>----
>
>
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