[jira] Commented: (IVY-324) Conditional patterns

["Xavier Hanin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IVY-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12483098 ] 

Xavier Hanin commented on IVY-324:
----------------------------------

see also IVY-439, which could be a nice syntax for conditional patterns too (more similar to your suggestion, John).

> Conditional patterns
> --------------------
>
>                 Key: IVY-324
>                 URL: https://issues.apache.org/jira/browse/IVY-324
>             Project: Ivy
>          Issue Type: Improvement
>    Affects Versions: 1.4
>            Reporter: Xavier Hanin
>         Assigned To: Xavier Hanin
>
> For the moment Ivy supports optional parts in patterns, but sometimes pattern need to be truly conditional.
> Two solutions can be considered:
> - add a condition attribute on patterns occuring in a list, like for all resource based dependency resolvers. For instance:
> <artifact pattern="path/to/[organisation]/[module]/[revision]/[artifact].[ext]" if="type=jar"/>
> <artifact pattern="path/to/[organisation]/[module]/[revision]/[artifact]-src.[ext]" if="type=source"/>
> - add a special syntax to allow conditional patterns everywhere. The drawback of this solution is that it may be difficult to read. The advantage is that it could be used wherever patterns are used (without requiring an additional attribute). Example:
> <artifact pattern="path/to/[organisation]/[module]/[revision]/[artifact]-src.[ext](if type=source)|path/to/[organisation]/[module]/[revision]/[artifact].[ext](if type=jar)"/>

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