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From "Christopher Olston (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-38) abstract PigScript parser
Date Thu, 06 Dec 2007 18:35:43 GMT

     [ https://issues.apache.org/jira/browse/PIG-38?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Christopher Olston resolved PIG-38.
-----------------------------------

    Resolution: Fixed

committed the changes

> abstract PigScript parser
> -------------------------
>
>                 Key: PIG-38
>                 URL: https://issues.apache.org/jira/browse/PIG-38
>             Project: Pig
>          Issue Type: Improvement
>          Components: grunt
>         Environment: grunt and pigpen
>            Reporter: Christopher Olston
>         Attachments: pigScriptParser.patch
>
>
> I am developing Pig Pen, an Eclipse plugin for Pig. Pig Pen needs to parse .pig scripts.
The parsing is the same as for grunt, but the actions I take are different (e.g., Pig Pen
will ignore "store" commands for the purpose of editing).
> What I'd like to do is create an abstract class PigScriptParser, which is identical to
the current GruntParser except no actions are taken. Then I'll add a GruntParser that extends
PigScriptParser, and has concrete implementations of actions (e.g., what to do when a "store"
command is encountered).
> I'll also add a PigPenParser that also extends PigScriptParser.
> This should not affect the behavior of GruntParser at all -- it just separates the parsing
from the actuating.

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