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https://issues.apache.org/jira/browse/CXF-9143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17955482#comment-17955482
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Daniel Meier edited comment on CXF-9143 at 6/1/25 9:54 AM:
-----------------------------------------------------------

After debugging through the failed tests, I found out that Angus Mail is 
required since CXF (or at least the failing test) depends on the 
{{DataContentHandler}} s which are implicitly registered by the 
[{{META-INF/mailcap}} file in the Angus Mail Jar 
|https://github.com/eclipse-ee4j/angus-mail/blob/2.0.3/core/src/main/resources/META-INF/mailcap].
 Since I am not familiar enough with the code of CXF to determine whether it is 
really needed at runtime, I prefer not to make any changes to the dependencies.


was (Author: dnl):
After debugging through the failed tests, I found out that Angus Mail is 
required since CXF (or at least the failing test) depends on the 
{{DataContentHandler}}s which are implicitly registered by the 
[{{META-INF/mailcap}} file in the Angus Mail Jar 
|https://github.com/eclipse-ee4j/angus-mail/blob/2.0.3/core/src/main/resources/META-INF/mailcap].
 Since I am not familiar enough with the code of CXF to determine whether it is 
really needed at runtime, I prefer not to make any changes to the dependencies.

> Remove Jakarta Mail and Jakarta Activation-Impl Dependencies
> ------------------------------------------------------------
>
>                 Key: CXF-9143
>                 URL: https://issues.apache.org/jira/browse/CXF-9143
>             Project: CXF
>          Issue Type: Improvement
>          Components: Core, Simple Frontend
>    Affects Versions: 4.1.2
>            Reporter: Daniel Meier
>            Priority: Major
>
> We are currently in the process of upgrading our application from Jakarta EE 
> 8 to Jakarta EE 10 which of course also affects CXF. Our application also 
> uses the Jakarta Mail API and to make progress during migration I just 
> commented out the old dependency on the Sun Mail Implementation 
> ({{com.sun.mail:jakarta.mail}}) and wanted to look at it at a later time. I 
> then saw that a mail implementation (Apache Angus) was a transitive 
> dependency of CXF. I looked at the source code of CXF and it seems like not 
> even the Jakarta Mail API is used outside of test code.
> A implementation of the Jakarta Activation API (Apache Angus) is also a 
> dependency of CXF, even though no SPI classes ({{MailcapRegistry}}, 
> {{MailcapRegistryProvider}}, {{MimeTypeRegistry}}, 
> {{MimeTypeRegistryProvider}}) are used.
> Would it be possible to remove those transitive Dependencies?



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