See how we use the plugin is Aries rsa:

This is the plugin config:
https://github.com/apache/aries-rsa/blob/master/parent/pom.xml#L223-L247

The comparisonVersion is set to 1.9.0:
https://github.com/apache/aries-rsa/blob/master/parent/pom.xml#L28

Typically you set the baseline to the last release of your project. This means changes in your current code are compared to the given version.

This is one package where we actually use baselining:
https://github.com/apache/aries-rsa/blob/master/spi/src/main/java/org/apache/aries/rsa/spi/packageinfo

When I now change an interface incompatibly in this package the baselining will complain in the build. If I then increase the version in packageinfo to the the next major version the build will accept incompatible changes.

Christian

On 22.06.2017 16:01, Tom Quarendon wrote:
I'm trying to set up api baselining using the maven-bundle-plugin.

I think I have it set up. I have messages coming out that say it's doing stuff. 
So that's good.

Forgive my confusion though, but I don't understand how it is supposed to work.
I have published a 1.0.0 version of my bundle to the repository.
I then make an incompatible change to the API, I get:
   Unable to find a previous version of the project in the repository

If I manually change the version number in my pom to 1.0.1, I then get errors 
about my API having changed and it requiring a change in version number.

So I don't understand. I only get a baseline check once I've remembered to 
change the version number? Surely the point is to tell me that I *need* to 
change the version number? That's certainly the support you get in bndtools 
(being also based on bnd, same as the maven plugin).

Have I set it up correctly? Or is this how it's supposed to work?
In the configuration, it looks like the setting comparisonVersion is initialised to 
(,${project.version}) by default, presumably meaning "up to and not including 
${project.version}".
Changing that to be (,${project.version}] makes it do a comparison, but 
produces no errors, presumably because it's comparing the bundle against 
itself. What I want it to do is compare against the current latest in the 
release repository.

So I'm confused. How do I make it tell me that I need to change my project 
version, without first changing my project version?

Thanks.


--
Christian Schneider
http://www.liquid-reality.de

Open Source Architect
http://www.talend.com


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