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From "Santhosh Srinivasan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-158) Rework logical plan
Date Wed, 28 May 2008 00:39:45 GMT

     [ https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Santhosh Srinivasan updated PIG-158:
------------------------------------

    Attachment: is_null.patch

The is_null.patch contains the following:

1. The logical operator LOIsNull.java
2. The physical operator POIsNull.java
3. Translation of LOIsNull to POIsNull
4. Unit test cases for LOIsNull, POIsNull and the translation from LOIsNull to POIsNull

Note:

1. The physical operators do not have the equivalent of LONot.
2. Comparison in physical operators is assumed to be a BinaryOperator. This assumption does
not hold for LONot and LOIsNull. In order to submit this patch, I have marked the rhs operator
in POIsNull as null

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

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