When I specify on which Gerrit projects to trigger a build on, I would like to be able to consider only some sub-directories.

We uses 'shared' git repositories for some stuff (configuration management, etc.) Gerrit OWNERS is used for the validation. And we have separated pipelines to deploy each perimeters. I wish my pipeline is trigerred only on changes on my sub-directories (or on common directories).

I think it could be expressed with in the project definition used in gerrit trigger, as follow:

    triggers {
        gerrit {
            events {
                changeMerged()
            }
            project(myRepo, 'master', ["ANT:common/**", "ANT:mySubDir/**"])
        }
    }

And it could be implemented in TriggerContext with com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.data.FilePath.