CODEWITHSUNDEEP
javamavenosgidependency-management
spitzanator
spitzanator

Reputation: 1897

Managing multiple dependency versions with OSGI/Maven

I've got a Maven build for an OSGI project I'm working on. I'd like to use some functionality from Google's guava-osgi library, version 11.0.1.

One of the projects I'm depending on has a dependency on guava-osgi, version 10.0.0. I know that having multiple versions for a particular dependency is feasible, but I'm having a little trouble with it.

Specifying the dependency on 11.0.1 in my project's pom compiles just fine, but when I run my unit tests, Java's pulling in version 10.0.0, which results in a runtime error. Specifically, one of the classes in 11.0.1 has the same name as an interface in 10.0.0, so Java barfs when I try to instantiate it.

Is there a way to do this elegantly?

Upvotes: 1

Views: 1043

Answers (3)

Kasun Gajasinghe
Kasun Gajasinghe

Reputation: 2776

Since you are working on a OSGi based environment you can easily specify the needed guava version using the bundle plugin. But, it's important to understand that at compile-time, and at unit testing time (ie. within Maven), it doesn't know/care about the OSGi environment you created. So, you have to use some trick as mentioned in other answers. I haven't tested those though.

Upvotes: 0

Dmytro Pishchukhin
Dmytro Pishchukhin

Reputation: 2369

  1. Check dependency tree with maven-dependency-plugin: mvn dependency:tree
  2. Find all dependencies that are active in test scope with guava-osgi:10.0.0 version
  3. Exclude guava-osgi:10.0.0 from test scope
...
<dependency>
    <groupId>dep1-groupid</groupId>
    <artifactId>dep1-artifactid</artifactId>
    <version>dep1-version</version>
    <scope>test</scope>
    <exclusions>
        <exclusion>
            <groupId>com.googlecode.guava-osgi</groupId>
            <artifactId>guava-osgi</artifactId>
        </exclusion>
    </exclusions>
</dependency>
...

Upvotes: 4

Kyle Renfro
Kyle Renfro

Reputation: 1248

You could try to exclude the 10.0.0 version from the 'project i depend on'

...
<dependency>
    <groupId>project i depend on</groupId>
    <artifactId>project</artifactId>
    <version>2.0.0</version>
    <exclusions>
        <exclusion>
            <groupId>com.googlecode.guava-osgi</groupId>
            <artifactId>guava-osgi</artifactId>
        </exclusion>
    </exclusions>
</dependency>
...

Upvotes: 0

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