http://code.google.com/webtoolkit/doc/trunk/DevGuideRequestFactory.html
The Request type returned from each method is parameterized with the return type of the service method. The type parameter becomes the type expected by the Receiver's onSuccess() method as in the example above. Methods that have no return value should return type Request<Void>. Requests can be parameterized with the following types: - Built-in value types: BigDecimal, BigInteger, Boolean, Byte, Enum, Character, Date, Double, Float, Integer, Long, Short, String, Void - Custom value types: any subclass of ValueProxy - Entity types: any subclass of EntityProxy - Collections: List<T> or Set<T>, where T is one of the above value or entity types TL;DR: No, map is not currently supported. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" 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-web-toolkit?hl=en.
