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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1244) parameter syntax in scripts, add support for ${VAR} (in addition to current $VAR)
Date Tue, 21 Sep 2010 19:35:33 GMT

     [ https://issues.apache.org/jira/browse/PIG-1244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Alan Gates updated PIG-1244:

         Assignee: Xuefu Zhang
    Fix Version/s: 0.9.0
         Priority: Minor  (was: Major)

> parameter syntax in scripts, add support for ${VAR} (in addition to current $VAR)
> ---------------------------------------------------------------------------------
>                 Key: PIG-1244
>                 URL: https://issues.apache.org/jira/browse/PIG-1244
>             Project: Pig
>          Issue Type: Improvement
>          Components: impl
>         Environment: all
>            Reporter: Alejandro Abdelnur
>            Assignee: Xuefu Zhang
>            Priority: Minor
>             Fix For: 0.9.0
> Currently parameter syntax in pig scripts is $VAR.
> This complicates scripts as parameter-literal concatenation is not supported. For example:
> An occurrence of '$OUT_tmp' in a script resolves to a parameter 'OUT_tmp', it would be
desirable this to resolve to a contactenation of $OUT&_tmp
> This can be solved by supporting parameter syntax ${VAR}, so the pig parser can identify
the end of the parameter name.
> Adding support for ${VAR} syntax in addition of $VAR would maintain backwards compatibility.
Changing to syntax ${VAR} syntax will break backwards compatibility.

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