[jira] [Updated] (PIG-4638) Allow TOMAP to accept dynamically sized input

["Niels Basjes (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-4638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Niels Basjes updated PIG-4638:
------------------------------
    Attachment: PIG-4638-20150723.patch

Please review the attached patch.
NOTE: The unit tests require the patch I attached with PIG-4405 to be present.

> Allow TOMAP to accept dynamically sized input 
> ----------------------------------------------
>
>                 Key: PIG-4638
>                 URL: https://issues.apache.org/jira/browse/PIG-4638
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.15.0
>            Reporter: Niels Basjes
>            Assignee: Niels Basjes
>             Fix For: 0.16.0
>
>         Attachments: PIG-4638-20150723.patch
>
>
> Currently the TOMAP function only supports a parameter list of values.
> Triggered by reading http://stackoverflow.com/q/17847970/ 
> {quote}I want to convert a bag of tuples to a map with specific value in each tuple as key. Basically I want to change:
> \{(id1, value1),(id2, value2), ...\} into \[id1#value1, id2#value2\]{quote}
> I propose to make the TOMAP accept both the current form
> {code}TOMAP($0, $1, $2, $3){code}
> and a new form where the a single parameter: 
> A bag of Tuples where each Tuple has exactly two fields: a "key" and a "value".



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