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From "Pi Song (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-158) Rework logical plan
Date Sat, 05 Apr 2008 00:18:33 GMT

    [ https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585853#action_12585853
] 

Pi Song commented on PIG-158:
-----------------------------

+1 For this new design. Now responsibilities are separated. It's up to PlanVisitor's implementation
whether it has to look into inner plans and in such cases helper methods are provided in the
base class.

@Shravan: From Alan's sample LOVisitor code, after you pop a walker back, you will have w
and currentWalker, which hold inner plan state and output plan state respectively. You should
be able to manipulate them from here.

> 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, visitorWalker.patch
>
>
> Rework the logical plan in line with http://wiki.apache.org/pig/PigExecutionModel

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