[jira] [Commented] (NIFI-6782) Create EL function for repeating a string

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-6782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976993#comment-16976993 ] 

ASF subversion and git services commented on NIFI-6782:
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Commit f1be730c9470e56e6042be8418cb03a70845eb69 in nifi's branch refs/heads/master from Matt Burgess
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=f1be730 ]

NIFI-6782: Added repeat() String EL function

NIFI-6782: Fixed intermittent unit test failure

This closes #3825

Signed-off-by: Mike Thomsen <mt...@apache.org>


> Create EL function for repeating a string
> -----------------------------------------
>
>                 Key: NIFI-6782
>                 URL: https://issues.apache.org/jira/browse/NIFI-6782
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Extensions
>            Reporter: Andy LoPresto
>            Assignee: Matt Burgess
>            Priority: Minor
>              Labels: expression-language, string-manipulation
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> As per a discussion with [~mattyb149], an Expression Language function which allowed for a number of repetitions of a string would be useful for generating arbitrary random text in a {{GenerateFlowFile}} processor. The usage would be:
> {code}
> ${"some string here":repeat(4)} # repeats the literal string 4 times
> ${literal("this_is_also_an_attribute_name"):repeat(3)} # repeats the literal string 3 times
> ${my_string_attr:repeat(5)} # repeats the value in the attribute 5 times
> ${"explicit string":repeat(random():mod(10):plus(1))} # repeats the string between 1 and 10 times
> {code}
> If it's easy to implement, I think a multiple parameter option would also be convenient, but it is not a requirement: 
> {code}
> ${"explicit string":repeat(random():mod(10):plus(1))} # repeats the string between 1 and 10 times
> ${"explicit string":repeat(1, 10)} # identical behavior to above
> {code}



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