gwt - Using List<Serializable> in a RPC call?

Posted by Garagos on Stack Overflow See other posts from Stack Overflow or by Garagos
Published on 2010-06-17T07:49:39Z Indexed on 2010/06/17 7:53 UTC
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Filed under:

java

|

serialization

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gwt

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rpc

I have a RPC service with the following method:

public List<Serializable> myMethod(TransactionCall call) {...}

But I get a warning when this method is analyzed, and then the rpc call fails

Analyzing 'my.project.package.myService' for serializable types
Analyzing methods:
public abstract java.util.List<java.io.Serializable> myMethod(my.project.package.TransactionCall call)
Return type: java.util.List<java.io.Serializable>
[...]
java.io.Serializable
Verifying instantiability
(!) Checking all subtypes of Object wich qualify for serialization

It seems I can't use Serializable for my List... I could use my own interface instead (something like AsyncDataInterface, wich implements the Serializable interface) but the fact is that my method will return a list custom objects AND basic objects (such as Strings, int....).

So my questions are:

Is it a standart behaviour? (I can't figure out why I can't use this interface in that case)
Does anyone have a workaround for that kind of situation?

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