Support Questions

Find answers, ask questions, and share your expertise
Celebrating as our community reaches 100,000 members! Thank you!

Is there a way for anyMatchingAttribute to work with references?


As the question states I was wondering if it's possible to do something like:



Thank you


Super Mentor


An example or detailed description of yoru use case may be helpful in providing the bets guidance for you.  While the NiFi Expression Language (NEL) function anyMatchingAttribute expects a java regular expression that searches and returns values for multiple FlowFile attributes, that does not appear to be what you need???  Your attribute "attributeToSearch" implies only a single specific FlowFile attribute is desire to be checked if it contains some "${value}".  If this is correct, you would be able to use the following NEL:


For above NEL, let's assume a FlowFile with attribute "attributeToSearch" set to "username".  A FlowFile attribute "username" set to "admin-matt".  A FlowFile attribute "value" set to "admin".

The result of above NEL statement would be true
${$attributeToSearch}} would first resolve to ${username} which would then resolve to "admin-matt".  That "admin-matt" string would be then passed to the NEL contains function which will to check to see if that string contains the string "admin" within it.  The result is a boolean "true" or "false".

If you found that the provided solution(s) assisted you with your query, please take a moment to login and click Accept as Solution below each response that helped.

Thank you,