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https://issues.apache.org/jira/browse/NIFI-3838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16008374#comment-16008374
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ASF subversion and git services commented on NIFI-3838:
-------------------------------------------------------

Commit b1901d5fe0bf87be3dcce144f13b74eb995be168 in nifi's branch 
refs/heads/master from [~markap14]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=b1901d5 ]

NIFI-3838: Initial implementation of RecordPath and UpdateRecord processor

NIFI-3838: Updated version from 1.2.0-SNAPSHOT to 1.3.0-SNAPSHOT; removed 
unneeded value from AttributeExpression.ResultType enum

NIFI-3838: Addressed PR Review feedback

NIFI-3838: Allow for schemas to be merged together for a record; refactored 
RecordSetWriterFactory so that there is a method to obtain the schema and then 
the writer is created with that schema. Added additional unit tests

NIFI-3838: Addressed problems with documentation based on PR Review

NIFI-3838: Fixed checkstyle violation

NIFI-3838: Addressed issue of comparing different types of Number objects

Signed-off-by: Matt Burgess <mattyb...@apache.org>

This closes #1772


> Create UpdateRecord processor and provide a RecordPath DSL to specify fields
> ----------------------------------------------------------------------------
>
>                 Key: NIFI-3838
>                 URL: https://issues.apache.org/jira/browse/NIFI-3838
>             Project: Apache NiFi
>          Issue Type: New Feature
>            Reporter: Mark Payne
>            Assignee: Mark Payne
>
> With the addition of the RecordReader and RecordWriter controller services, 
> it would be nice to have a Processor that is capable of updating specific 
> fields of a record, based on user-defined values or based on the value of 
> another field in the Record.
> To do so, we need some sort of DSL that would allow us to access a specific 
> field in a record - something akin to JsonPath but that will work on any 
> Record object.



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