Mark Payne created NIFI-431:
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Summary: Update standard validators not to validate if Expression
Language is present
Key: NIFI-431
URL: https://issues.apache.org/jira/browse/NIFI-431
Project: Apache NiFi
Issue Type: Sub-task
Components: Extensions, Tools and Build
Reporter: Mark Payne
Fix For: 0.1.0
We should not validate input in validators if expression language is used. This
way, we can avoid having to set property validators to NonEmptyValidator and
instead use more legit validators like PositiveIntegerValidator. This way, if
an Expression is used, the validator should indicate that the property is
valid. Otherwise, it should perform the validation.
This provides two very big benefits to users:
* If the user enters an invalid expression such as "${myVar" (without the
closing brace) this is valid according to the NonEmptyValidator. Assigning a
more legitimate validator such as a PositiveIntegerValidator will detect that
this is not an expression and will mark it as invalid.
* If no expression is used, we can still get the benefits of validation.
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