[Ivo Bellin Salarin]

In a class derived from Project
the instruction this.getSCMs().add(gitSCM)

causes the compilation error:

    incompatible types: GitSCM cannot be converted to CAP#1

    where CAP#1 is a fresh type-variable:

    CAP#1 extends SCM frpù capture of ? extends SCM

The object gitSCM is being initialized as follows:
    public void addGitRepo(String url, String branch)

    {

        List<UserRemoteConfig> repoList = new ArrayList<UserRemoteConfig>();

        repoList.add(new UserRemoteConfig(url, null, null, null));

        BranchSpec spec = new BranchSpec(branch);

        ArrayList<BranchSpec> specList = new ArrayList<BranchSpec>();

        specList.add(spec);

        ArrayList<GitSCMExtension> scmExtensions = new ArrayList<GitSCMExtension>();

        scmExtensions.add(new CleanCheckout());

        GitSCM gitSCM = new GitSCM(repoList, specList, false, null, null, "", scmExtensions);

        getSCMs().add(gitSCM);

    }

GitSCM extends GitSCMBackwardsCompatibility, which extends SCM.

getSCMs returns a collection of SCM.

Even if I cast GitSCM to SCM I get the same error.

Why am I getting this error?

Thanks for your attention,

Ivo

[Jesse Glick]

On Fri, Feb 6, 2015 at 10:02 AM, Ivo Bellin Salarin
<ivo.bell...@gmail.com> wrote:
> Why am I getting this error?

Because https://github.com/jenkinsci/jenkins/blob/17baaf7151fb3dbb5c7c79ac61a3bf2769dd82f6/core/src/main/java/hudson/model/Project.java#L120
is intentionally given a signature which makes it impossible to add
anything to the list without @SuppressWarnings("unchecked") (and even
then you would get an UnsupportedOperationException since the list is
immutable).

If you want this functionality in a freestyle-ish project you must use
multiple-scms-plugin.

[Ivo Bellin Salarin]

Thanks Jesse,

I'm thus using setSCM instead of getSCMs.

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