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From "Santhosh Srinivasan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-158) Rework logical plan
Date Fri, 09 May 2008 16:40:55 GMT

    [ https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595666#action_12595666
] 

Santhosh Srinivasan commented on PIG-158:
-----------------------------------------

1. The arguments to the user defined functions are represented as a list of expression operators.
This allows you to pass projections, arithmetic expressions, constants, etc to the UDF.

2. LOProject supports projection of more than one field. The columns to be projected are represented
as a list of column positions. As such, setStar() will be required.

> Rework logical plan
> -------------------
>
>                 Key: PIG-158
>                 URL: https://issues.apache.org/jira/browse/PIG-158
>             Project: Pig
>          Issue Type: Sub-task
>          Components: impl
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>         Attachments: logical_operators.patch, logical_operators_rev_1.patch, logical_operators_rev_2.patch,
logical_operators_rev_3.patch, parser_changes.patch, parser_changes_v1.patch, parser_changes_v2.patch,
parser_changes_v3.patch, parser_changes_v4.patch, ParserErrors.txt, visitorWalker.patch
>
>
> Rework the logical plan in line with http://wiki.apache.org/pig/PigExecutionModel

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