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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-2355) Allow parameters for comparator
Date Mon, 09 May 2011 12:56:03 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne updated CASSANDRA-2355:
----------------------------------------

    Attachment: 0001-Allow-comparators-to-take-arguments-ReversedType-v4.patch

Attaching v4 that is rebased against current trunk.

> Allow parameters for comparator
> -------------------------------
>
>                 Key: CASSANDRA-2355
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2355
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 0.8.1
>
>         Attachments: 0001-Allow-comparators-to-take-arguments-ReversedType-v3.patch,
0001-Allow-comparators-to-take-arguments-ReversedType-v4.patch, 0001-Allow-comparators-to-take-arguments-ReversedType_0.7.patch,
Allow-comparators-to-take-arguments-ReversedType.patch
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> Being able to provide arguments to a comparator, to parametrize its behavior, can be
useful.
> For example, a generic ReverseComparator is trivial to write, but without the ability
to provide arguments at the comparator constriction, it cannot be used.
> CASSANDRA-2231 provides another use case for this.
> This ticket proposes to introduce a parser for comparator definition that supports optional
parameters and to introduce a generic ReverseType as a simple example of this.

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