Hi,
Am 30.07.2007 um 15:41 schrieb VojBarZ:
> I'm trying to send JS object as parameter to RPC method at the java
> side. Communication is OK, but I don't know how to set the type of the
> given object (or how to retype JSONObject to the java object)
>
> If I try the following code, the JSON conversion throws the exception:
>
> public void testObject(MyObject o) throws RemoteServiceException {
> ......
> }
>
> If i try set type of the parameter to Object, the HashMap is set up.
The RPC implementation tries to convert any JavaScript object to the
corresponding method parameter type. If this is a custom class (i.e.
no simple type or string or map), it's treated as a JavaBean. For
example, let's say you send the object {"foo":"bar", "num":1} and
your method expects an instance of MyObject. In this case, a new
instance of MyObject is created. For this to work, MyObject needs to
have a public default constructor (i.e. a contructor that doesn't
take any parameters). Next, the RPC implementation looks for setFoo()
and setNum() methods. If they exist, they are called with the values
of "foo" and "num" of the JavaScript object.
In short, you can use strings, simple types, maps, and JavaBeans as
parameter types. However, you can't use classes that don't have a
public default constructor. For more information, see http://
qooxdoo.org/documentation/0.7/rpc
Regards,
Andreas
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