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https://issues.apache.org/jira/browse/JENA-967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne updated JENA-967:
-------------------------------
Description:
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.
was:
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:
BIND( "000000" as ?zfill )
BIND(
concat(if(strlen(?code)>=strlen(?zfill),"",substr(?zfill,strlen(?code)+1)),?code)
as ?reg_notation)
But it would have been nice to be able to use something less opaque like:
BIND( afn:printf("%06d",?code) as ?reg_notation)
So 'improvement'/'new feature' suggestion is an additional ARQ Extension
function that exposes java `printf` method.
> 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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