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From "Josh Wills (JIRA)" <>
Subject [jira] [Resolved] (CRUNCH-157) Mark the setContext function in the DoFn class as final
Date Tue, 05 Feb 2013 12:27:13 GMT


Josh Wills resolved CRUNCH-157.

       Resolution: Fixed
    Fix Version/s: 0.5.0

Committed version 2, the one that separates the calls to setContext and initialize.
> Mark the setContext function in the DoFn class as final
> -------------------------------------------------------
>                 Key: CRUNCH-157
>                 URL:
>             Project: Crunch
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.3.0, 0.4.0
>            Reporter: Josh Wills
>            Assignee: Josh Wills
>             Fix For: 0.5.0
>         Attachments: CRUNCH-157.patch, CRUNCH-157-sep.patch
> We often use a pattern of nested DoFns-- DoFns that are composed of operations on other
DoFns. There is currently an ambiguity around the right way to initialize those DoFns, since
it can be done either via overriding the initialize() or the setContext() methods in DoFn.
We should mark setContext as final in order to remove the ambiguity and fix the instances
in Crunch core where we override setContext() instead of initialize().

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