Brian Ghigiarelli created NIFI-476:
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Summary: EvaluateJsonPath fails with NullPointerException on null
values
Key: NIFI-476
URL: https://issues.apache.org/jira/browse/NIFI-476
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Affects Versions: 0.0.2, 0.1.0
Reporter: Brian Ghigiarelli
The EvaluateJsonPath processor fails with a NullPointerException when the input
JSON has a null value in the contents of a field it is evaluating.
{code:none}
Caused by: java.lang.NullPointerException
at
org.apache.nifi.processors.standard.AbstractJsonPathProcessor.getResultRepresentation(AbstractJsonPathProcessor.java:84)
at
org.apache.nifi.processors.standard.EvaluateJsonPath.onTrigger(EvaluateJsonPath.java:268)
at
org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
{code}
null is a valid value in the [JSON spec|http://www.json.org/]
The current spec of EvaluateJsonPath from NIFI-360 indicated that any missing
fields should be given an empty string attribute value in the output flow file
sent to "match".
null values should either follow this same pattern, or perhaps allow for null
values in the output FlowFile attributes to properly indicate the difference
between null and an empty String. Either way, EvaluateJsonProcessor should
handle null input values instead of throwing exceptions.
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