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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1244) parameter syntax in scripts, add support for ${VAR} (in addition to current $VAR)
Date Fri, 19 Feb 2010 00:52:27 GMT
parameter syntax in scripts, add support for ${VAR} (in addition to current $VAR)
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                 Key: PIG-1244
                 URL: https://issues.apache.org/jira/browse/PIG-1244
             Project: Pig
          Issue Type: Improvement
          Components: impl
         Environment: all
            Reporter: Alejandro Abdelnur
             Fix For: 0.7.0


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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