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https://issues.apache.org/jira/browse/KARAF-4251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Grzegorz Grzybek reassigned KARAF-4251:
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Assignee: (was: Grzegorz Grzybek)
> karaf-maven-plugin register its own URLStreamHandlerFactory for mvn
> -------------------------------------------------------------------
>
> Key: KARAF-4251
> URL: https://issues.apache.org/jira/browse/KARAF-4251
> Project: Karaf
> Issue Type: Question
> Components: karaf-tooling
> Affects Versions: 3.0.5
> Reporter: Alexander Osterwald
>
> The karaf-maven-plugin registers its own URLStreamHandlerFactory for the
> protocol _mvn_ [see
> here|https://github.com/apache/karaf/blob/karaf-3.0.x/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/features/InstallKarsMojo.java#L56].
> {code:title=InstallKarsMojo.java|borderStyle=solid}
> static {
> URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() {
> public URLStreamHandler createURLStreamHandler(String protocol) {
> if ("wrap".equals(protocol)) {
> return new org.ops4j.pax.url.wrap.Handler();
> }
> if ("mvn".equals(protocol)) {
> return new org.ops4j.pax.url.mvn.Handler();
> }
> return null;
> }
> });
> }
> {code}
> 1. Why is this necessary?
> 2. Why not using the system property _java.protocol.handler.pkgs_?
> I tried to set the URLStreamHandlerFactory in a project where I use the
> karaf-maven-plugin which leads to the exception 'factory already set....'
> 3. Is it possible to implement a check whether the protocol _mvn_ is already?
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