Mark Payne created NIFI-10970:
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Summary: Add a 'count' function to RecordPath
Key: NIFI-10970
URL: https://issues.apache.org/jira/browse/NIFI-10970
Project: Apache NiFi
Issue Type: New Feature
Components: Extensions
Reporter: Mark Payne
Assignee: Mark Payne
We should provide a {{count}} function for RecordPath. Currently there's no
simple way to express something like "get element A where at least 1 of the
child elements meets some criteria."
We should provide the ability to count the number of elements that match a
given RecordPath. For example, I can get all items from an order that have a
price over 10 by using the RecordPath {{/orders/items[price > 10]}}
However, I have no way of counting how many of those items have a price over 10.
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