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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TAJO-102) Add AlgebraVisitor and Refactor LogicalPlanner to use the visitor
Date Wed, 31 Jul 2013 16:07:48 GMT

     [ https://issues.apache.org/jira/browse/TAJO-102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hyunsik Choi updated TAJO-102:
------------------------------

    Attachment: TAJO-102.patch
    
> Add AlgebraVisitor and Refactor LogicalPlanner to use the visitor
> -----------------------------------------------------------------
>
>                 Key: TAJO-102
>                 URL: https://issues.apache.org/jira/browse/TAJO-102
>             Project: Tajo
>          Issue Type: Improvement
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-102.patch
>
>
> This patch adds AlgebraVisitor that visits the relational operators of the algebra expressions
recursively. It is helpful for implementing unit tests and utility methods related to algebra
expressions.
> In addition, this patch refactors LogicalPlanner class to be based on AlgebraVisitor.
This change improves the code readability.

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