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From "Thomas Neidhart (JIRA)" <>
Subject [jira] [Commented] (COLLECTIONS-483) Cyclic dependencies among several packages.
Date Sun, 20 Oct 2013 17:01:44 GMT


Thomas Neidhart commented on COLLECTIONS-483:

Hi Brahim,

first of all, thanks for all the effort that you have put into this.
It is a proposal that would involve very radical changes to the codebase, also going away
from the convention to put the interfaces and util classes in the base package and all implementations
in sub-packages.

Such a change should be discussed on the dev mailinglist, where it would get a greater audience.
So I would suggest that you post a message there in case you want to continue with this change.
Keep in mind that our plans are to release a 4.0 quite soon, thus a change like this should
happen either fast or will have to wait for a (potential) 5.0 release.

> Cyclic dependencies among several packages.
> -------------------------------------------
>                 Key: COLLECTIONS-483
>                 URL:
>             Project: Commons Collections
>          Issue Type: Improvement
>    Affects Versions: 4.0, 4.0-alpha1
>            Reporter: Brahim Djoudi
>            Priority: Minor
>         Attachments: c4.png, c4-refactored.png, c4-refactoring.pdf,
>   Original Estimate: 4h
>  Remaining Estimate: 4h
> Many packages have mutual dependency, directly or undirectly.
> These dependencies may be avoided just by moving some classes and interfaces within different
> This refactoring breaks API compatibility but enhances the useability and the maintainability
(hopefully) of the library. In addition, few issues in dynamic environments (like OSGi) less

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