On 2018-06-28 03:36 PM, John Lilley wrote:
Reading about OneOf -- can I just union all of my messages into one
"container" message?
That's what I do, to map a class hierarchy to messages: I have an
umbrella message corresponding to my base class, and a list of leaf node
messages inside a OneOf representing all the concrete types I need to
serialize.
With that, serialization is a two-stage process: In the first stage I
serialize into a string. In the second stage that string is then saved
to a protobuf file, preceded with its size. Thus, when reading it back
in, I first read that size, then the string (of the given size), which I
then deserialize using the protobuf API into my actual message / class.
That trick allows me to stream arbitrary numbers of objects / messages.
Stefan
--
...ich hab' noch einen Koffer in Berlin...
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