We are using protobuf as our messaging, and each message, we loop thru the
set fields, and do something with it.
We loop it using
for ( final Map.Entry<Descriptors.FieldDescriptor, Object> entry :
msg.getAllFields().entrySet()) {
FieldDescriptor field = entry.getKey();
Object value = entry.getValue();
Under profiler, we found that this GetAllFields uses most of the time, and
I did some research, and it looks like there is no other way.
I know that we can use do something like this:
for ( final FieldDescriptor field : msg.getDescriptorForType().getFields())
{
if (!msg.hasField(field)){
continue;
}
Object value = message.getField(field);
But getDescriptorForType returns all the fields rather than just the set
ones.
Does anyone know of another better performing way to loop thru the fields?
I believe the problem with getAllFields are creating a new map each time,
and also reflection. Can i force it to use Trove map inside rather than a
regular hashmap?
Thanks.
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