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https://issues.apache.org/jira/browse/NIFI-11627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17770634#comment-17770634
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David Handermann commented on NIFI-11627:
-----------------------------------------
Thanks for the reply [~nwchuckster], and thanks for [~markap14] for summarizing
the optimal approach.
As Mark highlighted, the general concept for selecting a schema makes sense,
but using the Parameter Context will not work for the reasons mentioned, and
Parameter Contexts are not intended to provide a general purpose registry of
schemas.
I agree with Mark's suggestion that providing a new Controller Service
interface for accessing JSON Schemas would meet the use case and provide a
configurable way forward. As JSON Schema has grown as a common way to express
format validation requirements, this would be an excellent improvement.
> Add Dynamic Schema References to ValidateJSON Processor
> -------------------------------------------------------
>
> Key: NIFI-11627
> URL: https://issues.apache.org/jira/browse/NIFI-11627
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Affects Versions: 1.19.1
> Reporter: Chuck Tilly
> Assignee: Daniel Stieglitz
> Priority: Major
>
> For the ValidateJSON processor, add support for flowfile attribute references
> that will allow for a JSON schema located in the Parameter Contexts, to be
> referenced dynamically based on a flowfile attribute. e.g.
> {code:java}
> #{${schema.name}} {code}
>
> The benefits of adding support for attribute references are significant.
> Adding this capability will allow a single processor to be used for all JSON
> schema validation. Unfortunately, the current version of this processor
> requires a dedicated processor for every schema, i.e. 12 schemas requires 12
> ValidateJSON processors. This is very laborious to construct and maintain,
> and resource expensive.
> ValidateJSON processor (https://issues.apache.org/jira/browse/NIFI-7392)
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