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https://issues.apache.org/jira/browse/NIFI-14687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann resolved NIFI-14687.
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Assignee: David Handermann
Resolution: Information Provided
> New processor to modify flow file content in JSON format
> --------------------------------------------------------
>
> Key: NIFI-14687
> URL: https://issues.apache.org/jira/browse/NIFI-14687
> Project: Apache NiFi
> Issue Type: Wish
> Components: Extensions
> Affects Versions: 2.4.0
> Reporter: Oleksandr Shpak
> Assignee: David Handermann
> Priority: Trivial
>
> h2. Use case
> In case when user need to modify JSON flow file content and set the new
> values of some keys using attribute values, currently it's possible with
> external scripts or complex schemas only.
> Example. NiFi calls external API, get the result in JSON format. Then calls
> another API endpoint to get the recent object status. After that the recent
> status should be set to the specific key (by path) in the original response.
> h2. Processor requirements
> * Processor should modify JSON content only
> * User can define one or more attribute names which values will be used to
> update the flow file content
> * For every attribute name user should set the path in JSONPath format
> * Processor should accept the next additional parameter:
> ** Processing behavior:
> *** Ignore empty or unset attribute values.
> *** Assign null value if attribute value is empty or not set
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