Re: [protobuf] Guid conventions

['Adam Cozzette' via Protocol Buffers]

I haven't had to store a GUID/UUID in a proto before but it seems like
string or bytes would be the best choice. You would definitely want to use
bytes (not string) if you're using the binary representation, since string
fields are for UTF-8 only. We could consider eventually creating a
well-known type but I'm not sure how much demand there is for one.

On Wed, Dec 6, 2017 at 11:46 AM, Marc Gravell 
wrote:

> A question on Stack Overflow earlier (https://stackoverflow.com/
> questions/47674930/google-protobuf-proto-file-query/4767629) reminded me
> that I'm not fully "up" on the conventions for using guids in protobuf.
>
> There's no primitive / keyword for them, and AFAIK no "well known type".
> So : how do folks tend to handle guids? Strings? Bytes? *Should* there be a
> stronger guid story? Or is this just a non-issue?
>
> Thoughts?
>
> Marc
>
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Re: [protobuf] ParseFromArray always returning true

['Feng Xiao' via Protocol Buffers]

On Wed, Dec 6, 2017 at 4:39 PM, 'Allen Vicencio' via Protocol Buffers <
protobuf@googlegroups.com> wrote:

> If all my fields in a protobuf are `optional`, will ParseFromArray ever
> return false? I am doing some tests right now, and I am testing two
> scenarios:
>
>
>> Person
>
> optional string name;
>
>
>  Vehicle
>
>  optional int64 wheels;
>
>
> 1. Empty buffer is passed into Person#ParseFromArray. Returns true.
> 2. Instance of Person is serialized into a buffer. Buffer is passed into
> Vehicle#ParseFromArray. Returns true.
>
> Is this expected behavior?
>
Unless you have required fields, protobuf parsing will always return true
as long as the input data is valid proto wire format.


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Re: [protobuf] Validate .proto file in Java

[Omar Al-Safi]

I guess this might help, I found this class
https://github.com/square/wire/blob/master/wire-schema/src/main/java/com/squareup/wire/schema/internal/parser/ProtoParser.java
which looks like something I could use though. I will give it a shot and
let you know. Thanks a lot for the tip!

On 6 December 2017 at 21:39, Marc Gravell  wrote:

> Apparently https://github.com/square/wire/ includes a runtime .proto
> parser for Java. That might help? It isn't the official one, note.
>
> On 6 Dec 2017 8:28 p.m., "Omar Al-Safi"  wrote:
>
>> Hello folks,
>>
>> I stubbled upon a requirements that I receive a textual representation of
>> a proto file from an external service and then I need to save it. I want
>> first to check if the text is a valid protobuf schema representation, is
>> there way a to validate the syntax of a proto file during the runtime? I
>> know that I can use the protoc compiler to validate a file and produce the
>> compiled schema but my intention here just only to* validate the syntax*
>> of the textual representation of a text if is a valid proto schema syntax.
>>
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