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From "Pi Song (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-112) Allow Java packages to be searched for functions.
Date Wed, 02 Apr 2008 13:11:24 GMT

    [ https://issues.apache.org/jira/browse/PIG-112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584559#action_12584559
] 

Pi Song commented on PIG-112:
-----------------------------

Craig,

I like this concept. I have the same problem when I have to retype long package names everytime
I refer to UDFs. 

Comments :-

1. This "include" should be specific to each instance of PigContext so packageImportList should
be modified to non-static
2. Your example makes use of the token "include" but your code uses "import". I prefer import
but I also want to know other people's opinions.
3. I don't understand either why it affects only dump command. Can you regenerate the patch
using the latest trunk so that I can help you on this?

> Allow Java packages to be searched for functions.
> -------------------------------------------------
>
>                 Key: PIG-112
>                 URL: https://issues.apache.org/jira/browse/PIG-112
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Craig Macdonald
>            Priority: Minor
>         Attachments: patch.import
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Motivation: Why should a user have to supply the fully qualified name to his user defined
function, if all the functions he ever uses are in a pre-defined list of packages?
> Currently PigContext has a list of Java packages that are searched for functions. Currently
the list consists of the following 
> packages:
>  * org.apache.pig.builtin.
>  * org.apache.pig.impl.builtin.
>  * com.yahoo.pig.yst.sds.ULT.
> Users should be able to add to this packagelist.
> Example in Grunt:
> {noformat}
> include com.pig.function.package.
> {noformat}
> This has connections to imports in Java classes, namespaces in XQuery, and the PATH env
var in shell scripting.
> Should be trivial to implement, or could be a property.

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