On Dec 3, 2010, at 14:21 , Koert Kuipers wrote:
public class ProtobufDeserializer<T extends Message> {
public T fromByteBuffer(ByteBuffer byteBuffer) {
I don't *think* the generic type is going to be enough due to erasure,
but I'm not a generics expert. I know something like the following
works (I may be messing up the generics syntax since I'm not super
familiar with it):
<T extends MessageLite> public T fromByteBuffer(ByteBuffer byteBuffer,
T defaultInstance) {
Builder b = defaultInstance.newBuilderForType();
b.mergeFrom(ByteString.copyFrom(byteBuffer));
return b.build();
}
You can get defaultInstance from
ConcreteMessageType.getDefaultInstance();
You may want to create a tiny InputStream wrapper around ByteBuffer to
avoid an extra copy, or if you know it is a heap byte buffer, use the
array mergeFrom().
Hope that helps,
Evan
--
Evan Jones
http://evanjones.ca/
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