I think that looking up things by role is a well defined operation, i.e.
"Hey, get me something that implements this interface!", so I think we
shouldn't break the pattern. That's why I would consider the following:
public interface Resolver {
Object lookup(String uri);
Object[] lookup(String[] uris);
Object lookupByRole(String role);
Object[] lookupByRole(String[] roles);
We could then define
lookupByRole("com.mycompany.MyComponent");
to be equivalent to
lookup("role://com.mycompany.MyComponent");
while being easier to use and not suffering from the additional cost of
parsing the URL. I think usability is more important than 'elegance', so
I wouldn't object to even adding something like:
Object lookupByRoleAndHint(String role, Object hint);
Well, that might be a bit too much, but I'd like to hear your opinions
all the same. It could potentially make the migration from CM/CS easier,
although that probably shouldn't be our primary concern.
(: Anrie ;)
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