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https://issues.apache.org/jira/browse/JENA-967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15226860#comment-15226860
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ASF GitHub Bot commented on JENA-967:
-------------------------------------
Github user afs commented on the pull request:
https://github.com/apache/jena/pull/132#issuecomment-205935091
Hi - looks good
One suggestion : Java printf can take a variable number of arguments from
zero upwards.
It would be nice if `afn:sprintf("%d != %d", 1, 2)` worked. Could the
arguments (args 1 on) go into a list, and javaSprintf proces them into a a
Object[] for String.format?
> Suggested ARQ Extension function: afn:printf(...)
> -------------------------------------------------
>
> Key: JENA-967
> URL: https://issues.apache.org/jira/browse/JENA-967
> Project: Apache Jena
> Issue Type: New Feature
> Components: ARQ
> Reporter: Stuart Williams
> Priority: Minor
>
> There are situations where it would be useful to be able to format strings
> bound to variable. In particular I have wanted to create some zero-filled
> numeric strings.
> I've accomplished the task with a pair of BINDs as follows where {{?code}} is
> bound to a numeric string:
> {noformat}
> BIND( "000000" as ?zfill )
> BIND(
> concat(if(strlen(?code)>=strlen(?zfill),"",substr(?zfill,strlen(?code)+1)),?code)
> as ?reg_notation)
> {noformat}
> But it would have been nice to be able to use something less opaque like:
> {noformat}
> BIND( afn:printf("%06d",?code) as ?reg_notation)
> {noformat}
> So 'improvement'/'new feature' suggestion is an additional ARQ Extension
> function that exposes java {{printf}} method.
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