Gradle: specify appropriate repo for dependency

As of Jan 2019 this is possible. Say you have a specific repo for oracle deps:

 maven {
    url 'https://artifactory.mycompany.com/somepath/oracle-binaries/'
    content {
        includeGroupByRegex "com\\.oracle.*"
    }
 }

Note: this requires at least Gradle 5.1

See https://docs.gradle.org/5.1.1/release-notes.html#repository-to-dependency-matching

There is no way to associate a dependency with a repository. The repositories will always be searched in their declared order.