jclouds is a major consumer of guice 2.0 functionality. We pretty much use it for everything. Without guice jclouds would be a lot more complex. We love guice with its warts.
There is one wart hard to love: issue 146<http://code.google.com/p/google-guice/issues/detail?id=346>. When reviewing our code with new recruits, I often wince at explaining this one. Currently AssistedInject is awesome for simple cases. However, needing to create a separate factory per object is most certainly accidentaly complexity. We end up copying and pasting code into factories to get this to work. I've pasted an example below of what that looks like. I understand a patch is written, but not scheduled for any release. This implies that this will haunt us for some time. Unless this can make guice 2.1, I'd really like a second (third, ...) opinion on how to work around this. I'm looking for a way to achieve multi-type assisted inject in some way that doesn't involve copy/pasting boilerplates or needing to compile our own vesion of guice. I'd like people to have a pleasant experience with guice/jclouds when they decide to contribute. Any help greatly appreciated! Cheers, -Adrian jclouds <http://code.google.com/p/jclouds/> /** * temporary factory until guice can do multi-type assisted inject * * @see <a href="http://code.google.com/p/google-guice/issues/detail?id=346"; /> * * @author Adrian Cole */ public class CommandFactory { @Inject private ParseSaxFactory parseSaxFactory; public static interface ParseSaxFactory { ParseSax<?> create(ParseSax.HandlerWithResult<?> handler); } @Inject private GetAndParseSaxFactory getAndParseSaxFactory; public static interface GetAndParseSaxFactory { GetAndParseSax<?> create(String uri, ParseSax<?> callable); } public GetAndParseSax<?> createGetAndParseSax(String uri, ParseSax.HandlerWithResult<?> handler) { return getAndParseSaxFactory.create(uri, parseSaxFactory.create(handler)); } @Inject private GetStringFactory getStringFactory; public static interface GetStringFactory { GetString create(String uri); } public GetString createGetString(String uri) { return getStringFactory.create(uri); } @Inject private PutFactory putFactory; public static interface PutFactory { Put create(@Assisted("uri") String uri, @Assisted("payload") String payload); } public Put createPut(String uri, String payload) { return putFactory.create(uri, payload); } @Inject private HeadFactory headFactory; public static interface HeadFactory { Head create(String uri); } public Head createHead(String uri) { return headFactory.create(uri); } } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "google-guice" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-guice?hl=en -~----------~----~----~----~------~----~------~--~---
