[KARAF-1333] Support for M2E workspace resolution via reference: protocol

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0
• Component/s: karaf
• Labels: m2e reference workspace
• Assignee: Unassigned
• Reporter: Tuomas Kiviaho
• Created: 06/Apr/12 08:31
• Updated: 09/Oct/20 04:11

Description

Eclipse M2E plugin provides a 'workspace resolution' mode where Maven projects in Eclipse workspace are provided as workspace repository which takes precedence over other repositories.

This leads to situation where artifact file isn't necessarily yet - depending on Mavens current lifecycle phase - provided as .jar but instead as directory pointing to project's output directory.

<features xmlns="http://karaf.apache.org/xmlns/features/v1.0.0" name="example">
    <feature name="example" description="example">
        <bundle>mvn:com/example/dependency/1.0.0</bundle>
        ...
        <bundle>mvn:com/example/project/0.0.1-SNAPSHOT</bundle>
        ...
    </feature>
</features>

The patches provided in this issue not only takes care of treating directories as exploded .jar files (common approach) but also provisions them with reference: protocol that most of the OSGi frameworks understand as direct filesystem references thus allowing exploded .jars to be installed.

<features xmlns="http://karaf.apache.org/xmlns/features/v1.0.0" name="example">
    <feature name="example" description="example">
        <bundle>mvn:com/example/dependency/1.0.0</bundle>
        ...
        <bundle>reference:file:/~/workspace/example-project/classes/</bundle>
        ...
    </feature>
</features>

Without intermediate round-trip via OSGi framework's bundle cache the 'workspace resolution' mode now offers also hot code replacement.