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https://issues.apache.org/jira/browse/MNG-7316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17633373#comment-17633373
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Christoph Läubrich commented on MNG-7316:
-----------------------------------------
Do you mean maven API or java API? The java API clearly states:
Throws: UnsupportedOperationException - if the XXX operation is not supported
by this list
so it is a bit unfortunate that actually one has to guard all "unsure"
operation but form API POV its all valid....
So now we just need an API to modify attached artifacts without relying on such
an ambiguous collection API :-)
> MavenProject.getAttachedArtifacts() regression with 3.8.1
> ---------------------------------------------------------
>
> Key: MNG-7316
> URL: https://issues.apache.org/jira/browse/MNG-7316
> Project: Maven
> Issue Type: Bug
> Components: Core
> Affects Versions: 3.8.2, 3.8.3
> Reporter: Gary D. Gregory
> Priority: Critical
> Fix For: waiting-for-feedback, wontfix-candidate
>
>
> The method {{MavenProject.getAttachedArtifacts()}} as of 3.8.2 breaks
> releasing components for us at Apache Commons using our Maven Release plugin
> because the list returned is now immutable, we now get an exception when
> calling {{remove()}} on the collection returned by the API; see
> [https://github.com/apache/commons-release-plugin/blob/master/src/main/java/org/apache/commons/release/plugin/mojos/CommonsDistributionDetachmentMojo.java#L137]
> This worked fine in 3.8.1, may you please change it back for 3.8.4?
> We cannot use Maven 3.8.2 and 3.8.3 to release our components.
> ([~michael-o]: Ironically, I discovered this trying to create a release
> candidate for Apache Commons CLI.)
> The exception in 3.8.3:
> {quote}Caused by: java.lang.UnsupportedOperationException
> at java.util.Collections$UnmodifiableCollection.remove
> (Collections.java:1060)
> at
> org.apache.commons.release.plugin.mojos.CommonsDistributionDetachmentMojo.execute
> (CommonsDistributionDetachmentMojo.java:136)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137)
> {quote}
>
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