Mark Payne created NIFI-4270:
--------------------------------
Summary: UpdateRecord should allow option of appending result to
indicated field
Key: NIFI-4270
URL: https://issues.apache.org/jira/browse/NIFI-4270
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Reporter: Mark Payne
Assignee: Mark Payne
Currently, when UpdateRecord is configured, it is given a Record Path where the
results should be placed and either a 'literal value' or a 'record path' of
where to obtain the results. It then evaluates the results and replaces
whatever is currently at the destination with the result. However, we should
allow the user to option append those results to the destination instead. For
example, if I have the following data:
{code}
{
"id": "4",
"table": {
"name": "mytable",
"columns": 8,
"rows": 40283
}
}
{code}
Then I should be able to use UpdateRecord to 'copy those fields from "table" to
the root level by adding a property with the name "/" and the value "/table/*"
I want this to then yield the following:
{code}
{
"id": "4",
"table": {
"name": "mytable",
"columns": 8,
"rows": 40283
},
"name": "mytable",
"columns": 8,
"rows": 40283
}
{code}
I think we can best accomplish this by adding a new property named "Destination
Conflict Strategy" with the following values:
Replace: Replaces the field specified by the property name with the results
(the current behavior)
Append: Appends the result to the field specified by the property name (the
desired behavior here)
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