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https://issues.apache.org/jira/browse/NIFI-1593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15203280#comment-15203280
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Uwe Geercken commented on NIFI-1593:
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I have created the processor myself (to learn how to contruct a processor).
Actually two of them after a discussion on the dev mailing list.
First processor "SplitToAttribute" maps the data to fields/columns and assignes
them to attributes.
The template engine processor "MergeTemplate" reads the attributes of a
flowfile, merges it with the velocity template and outputs the result to the
flowfile content. a second relationship is created for the output of the
original data.
The processors, a sample flow and more info are on github at
https://github.com/uwegeercken/nifi_processors
The only really issue I have is that the "usage" documentation does not work -
but I am working on that.
> New Processor to make use of a template engine
> ----------------------------------------------
>
> Key: NIFI-1593
> URL: https://issues.apache.org/jira/browse/NIFI-1593
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Core UI
> Affects Versions: 0.4.1
> Environment: all
> Reporter: Uwe Geercken
> Priority: Minor
>
> Add a new processor that allows to use the functionality of a template engine
> such as Apache Velocity.
> The user would provide either the template code or reference a template file.
> In the process the flowfile content/attributes would be merged with the
> template and thus transforming the content.
> A use case would be:
> Get a Json file >> EvaluateJsonPath >> transform the attributes of the Json
> file to a different format using the given template code or template file
> (using the template engine) >> conversion into any other text based format
> such as xml, html, text.
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