[NIFI-6320] ExtractHL7Attributes should better tolerate custom segments (e.g. Z segments)

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.9.2
• Fix Version/s: 1.10.0
• Component/s: Extensions
• Labels: Processor hl7
• Environment: OSX iMac
• Assignee: Unassigned
• Reporter: Gary Teichrow
• Created: 25/May/19 01:03
• Updated: 10/Feb/23 19:32
• Resolved: 10/Jul/19 16:54

Description

If a user is processing an HL7 message that contains custom segments (e.g. Z segments), an NPE is thrown at line 288 in ExtractHL7Attributes.java upon encountering that segment. The call to segment.getNames() will return a list of Nulls from HAPI for this custom segment.

Added a check whereby, if the user is using the "Use Segment Names" option in the ExtractHL7Attributes processor and the HL7 message being processed contains custom user segments (e.g., Z Segments), the code will downgrade to returning the Segment Label as it does when this option is not used. Without this a null pointer is thrown at line 288.

Issue Links

• fixes: NIFI-4610 Hanging Processor: ExtractHL7Attributes
• links to: GitHub Pull Request #3494