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https://issues.apache.org/jira/browse/NIFI-4272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16502551#comment-16502551
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ASF GitHub Bot commented on NIFI-4272:
--------------------------------------
Github user mosermw commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2748#discussion_r193223710
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ReplaceText.java
---
@@ -79,7 +80,8 @@
@SystemResourceConsideration(resource = SystemResource.MEMORY)
public class ReplaceText extends AbstractProcessor {
- private static Pattern REPLACEMENT_NORMALIZATION_PATTERN =
Pattern.compile("(\\$\\D)");
+ private static Pattern QUOTED_GROUP_REF_PATTERN =
Pattern.compile("('\\$\\d+')");
+ private static Pattern LITERAL_QUOTED_PATTERN =
Pattern.compile("literal\\(('.*?')\\)",Pattern.DOTALL);
--- End diff --
Expression Language allows single quotes and double quotes to be used
interchangeably. Can this pattern be updated to handle both?
> ReplaceText processor does not properly iterate multiple replacement values
> when EL is used
> -------------------------------------------------------------------------------------------
>
> Key: NIFI-4272
> URL: https://issues.apache.org/jira/browse/NIFI-4272
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.1.0, 1.2.0, 1.3.0
> Reporter: Matthew Clarke
> Assignee: Otto Fowler
> Priority: Major
>
> I am using the ReplaceText processor to take a string input (example:
> {"name":"Smith","middle":"nifi","firstname":"John"} ) and change all the
> filed names to all uppercase.
> Using above input as an example, I expect output like
> {"NAME":"Smith","MIDDLE":"nifi","FIRSTNAME":"John"}
> I expect I should be able to do this with ReplaceText processor; however, I
> see some unexpected behavior:
> -------
> Test 1: (uses EL in the replacement value property)
> Search value: \"([a-z]+?)\":\"(.+?)\"
> Replacement Value: \"*${'$1':toUpper()}*":\"$2\"
> Result: {"NAME":"Smith","NAME":"nifi","NAME":"John"}
> -------
> Test 2: (Does not use EL in the replacement Value property)
> Search value: \"([a-z]+?)\":\"(.+?)\"
> Replacement Value: \"new$1":\"$2\"
> Result: {"newname":"Smith","newmiddle":"nifi","newfirstname":"John"}
> --------
> As you can see if I use a NiFi expression Language statement in the
> Replacement Value property it no longer iterates as expect through the
> various $1 captured values. It repeatedly uses the EL result from the first
> EL evaluation in every iteration while $2 correctly iterates through the
> search values.
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