Yes indeed, thank you Juan. I have used this advanced button to employ some
fairly sophisticated expressions over many attributes. You are right: this
has proven to be exceptionally helpful in our workflows here. -Jim
On Thu, Jun 8, 2017 at 12:26 PM, Juan Sequeiros wrote:
> Jim,
>
> This might b
Jim,
This might be related and coincidentally today we were talking with a
coworker about the "advanced" button of UpdateAttribute and its ability to
set attributes based on conditions.
It's pretty powerful. [1]
It might come in useful for your efforts.
[1]
https://nifi.apache.org/docs/nifi-docs/
I do understand now. Thank you very much Mark. -Jim
On Thu, Jun 8, 2017 at 9:34 AM, Mark Payne wrote:
> Jim,
>
> The first expression will return false. None of the expressions below will
> ever throw an Exception.
>
> You could even chain them together like
> ${myAttribute:toLower():length():g
Jim,
The first expression will return false. None of the expressions below will ever
throw an Exception.
You could even chain them together like ${myAttribute:toLower():length():gt(4)}
and if myAttribute does not
exist, it will return false, rather than throwing an Exception.
Thanks
-Mark
On
So then if myAttribute does not even exist in a particular flowFile, the
first expression will return a null value rather than throw an error. Thank
you very much Mark. -Jim
On Thu, Jun 8, 2017 at 8:44 AM, Mark Payne wrote:
> Jim,
>
> You can use the expression:
>
> ${myAttribute:isNull()}
>
> O
Jim,
You can use the expression:
${myAttribute:isNull()}
Or, alternatively, depending on how you want to setup the route:
${myAttribute:notNull()}
If you want to check if the attribute contains 'True' somewhere within its
value,
then you can use:
${myAttribute:contains('True')}
Thanks
-Mark
Good morning. I receive HTTP POSTs of various types of files. Some have a
particular attribute myAttribute, some do not. I want to route the
flowfiles to different workflow paths depending on the presence of this
attribute. Can I use RouteAttribute and the expression language to do that,
something
