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https://issues.apache.org/jira/browse/NIFI-447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14949283#comment-14949283
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Mark Payne commented on NIFI-447:
---------------------------------

I replaced the existing patch because i found that ReplaceText was creating a 
very large buffer for each incoming FlowFile, which was causing some 
performance problems. This has been addressed here.

Thanks
-Mark

> Add "Replacement Strategy" property to ReplaceText
> --------------------------------------------------
>
>                 Key: NIFI-447
>                 URL: https://issues.apache.org/jira/browse/NIFI-447
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Extensions
>            Reporter: Mark Payne
>            Assignee: Joseph Percivall
>             Fix For: 0.4.0
>
>         Attachments: 
> 0001-NIFI-447-Fixed-some-typos-and-clarified-some-documen.patch, 
> NIFI-447.patch
>
>
> "Regular Expression" property should have displayName changed to "Search 
> Value"
> ReplaceText should allow for a "Replacement Strategy" with values:
> Prepend (Search Value is ignored; replacement value prepended to FlowFile)
> Append (Search Value is ignored; replacement value appended to FlowFIle)
> Regex Replace (current behavior, so this should be default)
> Linewise Regex Replace (like current behavior if Evaluation Mode is set to 
> Line-by-Line)
> Literal Replace (do not interpret the Replacement value
> The Line-by-Line property should be removed; this is breaking change!



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