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From George Porter <gmpor...@gmail.com>
Subject Re: How to define an RPC message with a void return type
Date Sat, 01 Aug 2009 00:05:52 GMT
The issue showed up when I was implementing put() on the server side.

I had written the method like this:

  public Void put(ByteBuffer key, ByteBuffer value) throws AvroRemoteException {
    kvstore.put(key, value);

and was getting compiler errors.  I just added a "return null;" and it
fixed the problem.  I guess that I had expected the compiler to
produce a method with a return type of 'void', rather than 'Void'.


On Fri, Jul 31, 2009 at 4:54 PM, Doug Cutting<cutting@apache.org> wrote:
> George Porter wrote:
>> The 'put' message gets compiled into the following signature in Java:
>> {code}
>> Void put(ByteBuffer key, ByteBuffer value)
>>    throws AvroRemoteException;
>> {code}
>> Unfortunately, Void isn't an instantiatable type in Java.  Any thoughts?
> When do you need to instantiate a Void?  I'm not saying this isn't a
> problem, I'm just not yet sure where the problem is.
> Doug

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