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From "Karl Heinz Marbaise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MSHADE-287) honor classpath order
Date Tue, 10 Apr 2018 19:35:00 GMT

    [ https://issues.apache.org/jira/browse/MSHADE-287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16432827#comment-16432827
] 

Karl Heinz Marbaise commented on MSHADE-287:
--------------------------------------------

What was causing that issue which is related to classpath order in the WAR file? (I'm not
talking about the order itself)..What is loaded/used etc. which is depending on the order?
 You are talking about a file.list? Is that used somewhere in your own code ? 

> honor classpath order
> ---------------------
>
>                 Key: MSHADE-287
>                 URL: https://issues.apache.org/jira/browse/MSHADE-287
>             Project: Maven Shade Plugin
>          Issue Type: Improvement
>            Reporter: Jürgen Weber
>            Priority: Major
>
> Shade Plugin should be able to honor classpath order semantics: -cp a.jar:b.jar has the
effect that resources in b.jar are not visible if also in a.jar
> It should be possible to have the same effect with Shade Plugin: iterate for last to
first in classpath: extract current element overwriting content of previous extracted.
> use case:
> running an app with Maven has a defined classpath order, whereas the order of jars in
WEB-INF/lib is rather random. So you could build an ueber jar containing all jars of lib which
would result in the desired class order.
> This is currently not possible with org.apache.maven.plugins.shade.ShadeRequest as the
input jars are in a java.util.Set which has no order.
> See 
> [https://stackoverflow.com/questions/4466526/order-of-class-loading-from-a-war-file]
> [https://stackoverflow.com/questions/2021227/control-the-classpath-ordering-of-jars-in-web-inf-lib-on-tomcat-5]
>  



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