[NIFI-6127] AttributeExpressionLanguage - 'match' and 'find' throw NPE when comparison object is a non existing flowfile attribute

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.10.0, 1.9.2
• Component/s: Core Framework
• Assignee: Matt Burgess
• Reporter: Steven Youtsey
• Created: 15/Mar/19 17:47
• Updated: 01/Apr/19 16:48
• Resolved: 20/Mar/19 01:32

Description

MatchesEvaluator, line 56 - When the flow file attributes do not contain the attribute specified in the comparison portion of a 'matches' operation, the Pattern.compile(null) throws an NPE.

Since there is no guarantee that a specified flow file attribute is present, this should simply return BooleanQueryResult(false) if the desired attribute does not exist.

Issue Links

• links to: GitHub Pull Request #3378