@Retention(value=RUNTIME)
@Target(value=FIELD)
public static @interface CommandLine.ParentCommand
Fields annotated with @ParentCommand will be initialized with the parent command of the current subcommand.
If the current command does not have a parent command, this annotation has no effect.
Parent commands often define options that apply to all the subcommands. This annotation offers a convenient way to inject a reference to the parent command into a subcommand, so the subcommand can access its parent options. For example:
@Command(name = "top", subcommands = Sub.class)
class Top implements Runnable {
@Option(names = {"-d", "--directory"}, description = "this option applies to all subcommands")
File baseDirectory;
public void run() { System.out.println("Hello from top"); }
}
@Command(name = "sub")
class Sub implements Runnable {
@ParentCommand
private Top parent;
public void run() {
System.out.println("Subcommand: parent command 'directory' is " + parent.baseDirectory);
}
}