[protobuf] Deserializng JSON tagged unions?

2016-05-06 Thread Marco
I'm looking to generate de/serialization for json tagged union messages 
from an external rest api, eg.
{ type: "error", message: "wrong"} or { type:"ok", response: { a: 1, b: 2}}.

Reading the docs it seems like an any valued field the type field modified 
json_name  would work similarly, although this isn't supported.

Is there an existing .proto message that would map to those messages? Perhaps 
with some annotation to this more obvious schema, or being able to specify 
a custom tag to determine which case of a oneof is in use (instead of the 
default enum value)?

message Error {
  string message = 1;
}

message Second {
  int64 response = 1;
}

message MyUnion {
  oneof Either {
Error  err = 1;
Ok ok  = 2;
  }
}




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Re: [protobuf] Deserializng JSON tagged unions?

2016-05-10 Thread Marco
That does work, but it seems like it creates a lot of unnecessary work if 
there are many fields.

Is there a better way to handle a schema more like this?

 { type: "error", message: "wrong"} or { type:"ok", a: 1, b:2, c:3, d:4, 
... }.

On Monday, May 9, 2016 at 3:12:19 PM UTC-4, Feng Xiao wrote:
>
>
>
> On Fri, May 6, 2016 at 8:18 PM, Marco <a.f@gmail.com > 
> wrote:
>
>> I'm looking to generate de/serialization for json tagged union messages 
>> from an external rest api, eg.
>> { type: "error", message: "wrong"} or { type:"ok", response: { a: 1, b: 
>> 2}}.
>>
>> Reading the docs it seems like an any valued field the type field 
>> modified json_name  would work similarly, although this isn't supported.
>>
>> Is there an existing .proto message that would map to those messages? 
>> Perhaps 
>> with some annotation to this more obvious schema, or being able to specify 
>> a custom tag to determine which case of a oneof is in use (instead of the 
>> default enum value)?
>>
> How about something like:
>
> message Response {
>   string type = 1;
>   message Content {
> int32 a = 1;
> int32 b = 2;
>   }
>   oneof OneofResponse {
> string message = 2;
> Content response = 3;
>   }
> }
>
> ?
>  
>
>> message Error {
>>   string message = 1;
>> }
>>
>> message Second {
>>   int64 response = 1;
>> }
>>
>> message MyUnion {
>>   oneof Either {
>> Error  err = 1;
>> Ok ok  = 2;
>>   }
>> }
>>
>>
>>
>>
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>> email to protobuf+u...@googlegroups.com .
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>> .
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>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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[protobuf] protocol buffers and client-server communication

2011-01-22 Thread Marco@worldcorp
Hi all
 i am new to protocol buffer, and was wondering if i can use it for my
needs.
Basically, i am trying to implement a client-server communication
where i can have this type of messages:
- INCOMING  (from client to server)
 - String
 - a  Savings  Object
 - a Share object
- OUTCOMING (from server to client)
 - String
 - a List of Savings objects
 - a List of Share object

Basically, what i am trying to say is that i have N types of messages
from client to server and M types of messages from server to client,
and all this messages are differents from each other (having in total
N + M) types of messages.
I am guessing i will need 1 proto file for each type of message,
correct?

w/kindest regards
  marco

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[protobuf] Problem when generating classes

2011-01-28 Thread Marco@worldcorp
Hi all
 i am starting to learn protobuffers so that i can use them alongside
Netty

I have created this simple .proto file

package tutorial;

option java_package = com.example.messages;
option java_outer_classname = MessageProtos;

message Message {
  required string content = 1;

  enum MessageType {
TEST = 0;
DEBUG = 1;
DO_TASK = 2;
  }
  required MessageType type = 2;
}

THis has generated a class with two methods that Errors out due to
'Cannot dereference boolean'

public static com.example.messages.MessageProtos.Message
parseDelimitedFrom(java.io.InputStream input)
throws java.io.IOException {
  return newBuilder().mergeDelimitedFrom(input).buildParsed();
}
public static com.example.messages.MessageProtos.Message
parseDelimitedFrom(
java.io.InputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws java.io.IOException {
  return newBuilder().mergeDelimitedFrom(input, extensionRegistry)
   .buildParsed();
}

could anyone tell me what have i done wrong in my .proto file?

thanks and regards
 marco




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[protobuf] Re: Problem when generating classes

2011-01-29 Thread Marco@worldcorp
Hi
  ok i think i found the problem.
I am compiling using protobuffer 2.2.0 , and in my project i am using
libraries from protobuf 2.3.0

rgds
 marco

On Jan 28, 11:45 pm, Marco@worldcorp mmistr...@gmail.com wrote:
 Hi all
  i am starting to learn protobuffers so that i can use them alongside
 Netty

 I have created this simple .proto file

 package tutorial;

 option java_package = com.example.messages;
 option java_outer_classname = MessageProtos;

 message Message {
   required string content = 1;

   enum MessageType {
     TEST = 0;
     DEBUG = 1;
     DO_TASK = 2;
   }
   required MessageType type = 2;

 }

 THis has generated a class with two methods that Errors out due to
 'Cannot dereference boolean'

 public static com.example.messages.MessageProtos.Message
 parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return newBuilder().mergeDelimitedFrom(input).buildParsed();
     }
     public static com.example.messages.MessageProtos.Message
 parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return newBuilder().mergeDelimitedFrom(input, extensionRegistry)
                .buildParsed();
     }

 could anyone tell me what have i done wrong in my .proto file?

 thanks and regards
  marco

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[protobuf] why am i getting this exception?

2011-01-29 Thread Marco@worldcorp
HI all
 i have wrote a simple messages.proto, compiled it (On Ubuntu Lucid
Lynx) with protobuf 2.2.0.
here's the .proto file

package tutorial;

option java_package = com.example.messages;
option java_outer_classname = MessageProtos;


enum MessageType {
TEST = 0;
DEBUG = 1;
DO_TASK = 2;
  }

message Message {
  required string content = 1;
  optional MessageType type = 2;
}



I am using Netty as well, and when i run it i get the following
exception

2011-01-29 11:05:30,708 [client.NettyEchoHandler ]
ERROR * Unexpected exception from downstream. [New I/O client worker
#1-1]
com.google.protobuf.InvalidProtocolBufferException: Protocol message
tag had invalid wire type.
at
com.google.protobuf.InvalidProtocolBufferException.invalidWireType(InvalidProtocolBufferException.java:
78)
at com.google.protobuf.UnknownFieldSet
$Builder.mergeFieldFrom(UnknownFieldSet.java:496)
at com.google.protobuf.GeneratedMessage
$Builder.parseUnknownField(GeneratedMessage.java:271)
at com.example.messages.MessageProtos$Message
$Builder.mergeFrom(MessageProtos.java:318)
at com.example.messages.MessageProtos$Message
$Builder.mergeFrom(MessageProtos.java:215)


could anyone help pls?

w/kindest regards
 marco


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[protobuf] Re: why am i getting this exception?

2011-01-29 Thread Marco@worldcorp
Hello,
  PLs ignore my message
It was a Netty problem as i was using  multiple decoders / encoders /
frames and that was messing up the result

sorry for bothering

regards
 marco

On Jan 29, 11:09 am, Marco@worldcorp mmistr...@gmail.com wrote:
 HI all
  i have wrote a simple messages.proto, compiled it (On Ubuntu Lucid
 Lynx) with protobuf 2.2.0.
 here's the .proto file

 package tutorial;

 option java_package = com.example.messages;
 option java_outer_classname = MessageProtos;

 enum MessageType {
     TEST = 0;
     DEBUG = 1;
     DO_TASK = 2;
   }

 message Message {
   required string content = 1;
   optional MessageType type = 2;

 }

 I am using Netty as well, and when i run it i get the following
 exception

 2011-01-29 11:05:30,708 [client.NettyEchoHandler                 ]
 ERROR * Unexpected exception from downstream. [New I/O client worker
 #1-1]
 com.google.protobuf.InvalidProtocolBufferException: Protocol message
 tag had invalid wire type.
         at
 com.google.protobuf.InvalidProtocolBufferException.invalidWireType(InvalidProtocolBufferException.java:
 78)
         at com.google.protobuf.UnknownFieldSet
 $Builder.mergeFieldFrom(UnknownFieldSet.java:496)
         at com.google.protobuf.GeneratedMessage
 $Builder.parseUnknownField(GeneratedMessage.java:271)
         at com.example.messages.MessageProtos$Message
 $Builder.mergeFrom(MessageProtos.java:318)
         at com.example.messages.MessageProtos$Message
 $Builder.mergeFrom(MessageProtos.java:215)

 could anyone help pls?

 w/kindest regards
  marco

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[protobuf] Error with Netty and extensions

2011-02-06 Thread Marco@worldcorp
Hi all
   i am trying to use extensions with protobuf and Netty
here's my proto file

package tutorial;

option java_package = com.example.messages;
option java_outer_classname = MessageProtos;
option optimize_for = LITE_RUNTIME;

enum MessageType {
TEST = 0;
DEBUG = 1;
DO_TASK = 2;
SPECIAL = 3;
  }

message Message {
  required string content = 1;
  required MessageType type = 2;

  extensions 3 to 99;

}

 extend Message {
   optional string enhancedContent = 3;
   optional Share share = 4;
   optional int32 bar = 5;
 }


message Share {
   required string ticker = 10;
   required string company = 11;
   required double price = 12;
}


I am setting extensions this way in my client

if(line.startsWith(task)) {
builder.setType(MessageProtos.MessageType.DO_TASK);
builder.setExtension(MessageProtos.bar, 1);
} else {
builder.setType(MessageProtos.MessageType.DEBUG);

}

I have written an unit test which works fine

@Test
public void testExtensions() throws Exception {
MessageProtos.Message.Builder builder =
MessageProtos.Message.newBuilder();
builder.setExtension(MessageProtos.bar, 1);
builder.setContent(foobar);
builder.setType(MessageProtos.MessageType.DEBUG);
MessageProtos.Message message = builder.build();
Assert.assertTrue(message.hasExtension(MessageProtos.bar));

}

However, on the serverside i am getting this exception

2011-02-06 20:44:58,130 [handlers.EchoServerHandler  ]
ERROR * Unexpected exception from downstream. [New I/O server worker
#1-1]
java.lang.NullPointerException
at com.google.protobuf.GeneratedMessageLite
$ExtendableBuilder.parseUnknownField(GeneratedMessageLite.java:311)
at com.example.messages.MessageProtos$Message
$Builder.mergeFrom(MessageProtos.java:273)
at com.example.messages.MessageProtos$Message
$Builder.mergeFrom(MessageProtos.java:187)
at com.google.protobuf.AbstractMessageLite
$Builder.mergeFrom(AbstractMessageLite.java:107)
at com.google.protobuf.AbstractMessageLite
$Builder.mergeFrom(AbstractMessageLite.java:161)
at com.google.protobuf.AbstractMessageLite
$Builder.mergeFrom(AbstractMessageLite.java:93)
at
org.jboss.netty.handler.codec.protobuf.ProtobufDecoder.decode(ProtobufDecoder.java:
103)
at
org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:
72)
at
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:
302)
at
org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:
317)
at
org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:
299)
at
org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:
216)
at
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:
274)
at
org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:
261)
at
org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:350)
at
org.jboss.netty.channel.socket.nio.NioWorker.processSelectedKeys(NioWorker.java:
281)
at
org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:201)
at
org.jboss.netty.util.internal.IoWorkerRunnable.run(IoWorkerRunnable.java:
46)
at java.util.concurrent.ThreadPoolExecutor
$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor
$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

Do i need to somehow declare extensions whenever i register my
ProtocolDecoder / ProtocolEncoder?

If i don't set any extensions, the client-server communication works
fine

could anyone help?

w/kindest regards
 marco












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[protobuf] field of type timestamp or date with protobuf message

2011-02-12 Thread Marco@worldcorp
HI all
 is it possible to add a field of type timestamp , or date, to a
protobuf message..

i have quickly read the guide, and i saw no trace of timestamps or
fields of type date.

could anyone assist?

w/kindest regards
 marco

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[protobuf] XSD to define .proto format?

2011-05-20 Thread Marco Tedone
Hi all,

Is there an XML schema (XSD) which defines the .proto file format? I
need it so that JAXB can create the POJOs to fill a .proto file.

Regards,

Marco

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[protobuf] Numeric range not supported?

2011-05-30 Thread Marco Tedone
Hi all,

I'm checking the protobuf language definition and I couldn't find
anywhere support for numeric range. In XSD, for instance, one could
have:

simpleType name=ZeroToTen
restriction base=int
  minInclusive value=0 /
  maxInclusive value=10 /
/restriction
 /simpleType

However I couldn't find equivalent translation in the proto language
definition. I could find defaults and enums, but not number ranges.

Regards,

Marco

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[protobuf] Maps in protobuf / 2

2011-06-16 Thread Marco Mistroni
HI all
 sorry i hijacked a previous thread ..
Is it possibel to define Maps in protobuff?

i have some serverside code which returns a MapString, Double, and i was
wondering if there was a way in protobuf
to define a Map

could anyone help ?

w/kindest regards
 marco

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[protobuf] Uploading the maven-protoc-plugin to Maven Central?

2011-06-19 Thread Marco Tedone
Hi all,

Is there a reason why the plugin hasn't been uploaded to Maven
Central? If you want I could take ownership of that but then I'd have
to be the owner of the com.google.protobuf Maven groupId, which I
don't think is a good idea.

There are already two other maven-protoc-plugin out there, both custom
and this is causing confusion. I believe people would like to see the
Google maven-protoc-plugin and use that, but in a way is easy to use
(e.g. available in Maven Central).

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RE: [protobuf] Uploading the maven-protoc-plugin to Maven Central?

2011-06-21 Thread Marco Tedone
So, the google maven-protoc plugin has been retired in favour of dtrott one. I 
had a look at dtrott plugin and it seems to me unnecessary convoluted. 
Additionally it runs under the BSD license, which is not very Enterprise 
Friendly. 

I created my own, which is just a wrapper around protoc and runs under the MIT 
license *and* is on Maven central: 
http://repo2.maven.org/maven2/uk/co/jemos/maven/plugins/maven-jemosProtoc-plugin/

Regards,

Marco

-Original Message-
From: Gregory Kick [mailto:g...@google.com] 
Sent: 21 June 2011 18:26
To: Pherl Liu
Cc: Marco Tedone; Protocol Buffers
Subject: Re: [protobuf] Uploading the maven-protoc-plugin to Maven Central?

See http://code.google.com/p/protobuf/issues/detail?id=81#c20

On Tue, Jun 21, 2011 at 4:23 AM, Pherl Liu liuj...@google.com wrote:
 +Gregory

 On Sun, Jun 19, 2011 at 4:16 PM, Marco Tedone marco.ted...@gmail.com
 wrote:

 Hi all,

 Is there a reason why the plugin hasn't been uploaded to Maven 
 Central? If you want I could take ownership of that but then I'd have 
 to be the owner of the com.google.protobuf Maven groupId, which I 
 don't think is a good idea.

 There are already two other maven-protoc-plugin out there, both 
 custom and this is causing confusion. I believe people would like to 
 see the Google maven-protoc-plugin and use that, but in a way is 
 easy to use (e.g. available in Maven Central).

 --
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 Groups Protocol Buffers group.
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--
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Data Liberation

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RE: [protobuf] Uploading the maven-protoc-plugin to Maven Central?

2011-06-21 Thread Marco Tedone
I have already talked to dtrott and he confirmed his plugin runs under the BSD 
license. Time allowing I will attempt to contact him and suggest an official 
release. In the meantime I'm releasing version 0.0.2.RELEASE of my one.

Regards,

Marco

-Original Message-
From: Gregory Kick [mailto:g...@google.com] 
Sent: 21 June 2011 19:28
To: Marco Tedone
Cc: Pherl Liu; Protocol Buffers
Subject: Re: [protobuf] Uploading the maven-protoc-plugin to Maven Central?

I can't seem to find anything about licenses in that code and IANAL anyway.  
That said, much of that code is derived from my original code, which was under 
the same license as protobuf anyway.  Might be worth emailing him to make sure 
that the licensing is what you think it is.

Anyway, I definitely support a community effort to build a better plugin.  I'd 
suggest reaching out to dtrott and discussing collaboration and if you guys 
want to work on making some version of either plugin official then we can get 
CLAs for you guys and do that.

On Tue, Jun 21, 2011 at 12:49 PM, Marco Tedone marco.ted...@gmail.com wrote:
 So, the google maven-protoc plugin has been retired in favour of dtrott one. 
 I had a look at dtrott plugin and it seems to me unnecessary convoluted. 
 Additionally it runs under the BSD license, which is not very Enterprise 
 Friendly.

 I created my own, which is just a wrapper around protoc and runs under 
 the MIT license *and* is on Maven central: 
 http://repo2.maven.org/maven2/uk/co/jemos/maven/plugins/maven-jemosPro
 toc-plugin/

 Regards,

 Marco

 -Original Message-
 From: Gregory Kick [mailto:g...@google.com]
 Sent: 21 June 2011 18:26
 To: Pherl Liu
 Cc: Marco Tedone; Protocol Buffers
 Subject: Re: [protobuf] Uploading the maven-protoc-plugin to Maven Central?

 See http://code.google.com/p/protobuf/issues/detail?id=81#c20

 On Tue, Jun 21, 2011 at 4:23 AM, Pherl Liu liuj...@google.com wrote:
 +Gregory

 On Sun, Jun 19, 2011 at 4:16 PM, Marco Tedone 
 marco.ted...@gmail.com
 wrote:

 Hi all,

 Is there a reason why the plugin hasn't been uploaded to Maven 
 Central? If you want I could take ownership of that but then I'd 
 have to be the owner of the com.google.protobuf Maven groupId, which 
 I don't think is a good idea.

 There are already two other maven-protoc-plugin out there, both 
 custom and this is causing confusion. I believe people would like to 
 see the Google maven-protoc-plugin and use that, but in a way is 
 easy to use (e.g. available in Maven Central).

 --
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 --
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 Data Liberation





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[protobuf] PROTOMAK 0.0.2.RELEASE just released

2011-06-24 Thread Marco Tedone
Hi, Protomak is a tool to auto-convert XSDs to .proto files. We have
just released version 0.0.2.RELEASE. You can find out more at
http://www.jemos.eu/projects/protomak

Regards,

Marco

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[protobuf] What causes TargetInvocationException during serialization

2014-05-16 Thread Marco P.
I am trying to serialize something like this (i'll summarize as the object 
is more complex):

class Anag {

}

System.Reflection.TargetInvocationException was unhandled
  Message=TargetInvocationException
  StackTrace:
at System.Reflection.RuntimePropertyInfo.GetValue()
at ProtoBuf.Serializers.TupleSerializer.GetValue()
at ProtoBuf.Serializers.TupleSerializer.Write()
at ProtoBuf.Meta.RuntimeTypeModel.Serialize()
at ProtoBuf.ProtoWriter.WriteObject()
at 
ProtoBuf.Serializers.SubItemSerializer.ProtoBuf.Serializers.IProtoSerializer.Write()
at ProtoBuf.Serializers.TagDecorator.Write()
at ProtoBuf.Serializers.ListDecorator.Write()
at ProtoBuf.Serializers.PropertyDecorator.Write()
at ProtoBuf.Serializers.TypeSerializer.Write()
at ProtoBuf.Meta.RuntimeTypeModel.Serialize()
at ProtoBuf.Meta.TypeModel.SerializeCore()
at ProtoBuf.Meta.TypeModel.Serialize()
at ProtoBuf.Meta.TypeModel.Serialize()
at ProtoBuf.Serializer.Serialize()
 [...]
  InnerException: 

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Re: [protobuf] Deserializng JSON tagged unions?

2016-05-10 Thread Marco Farrugia
Unnecessary being that deserialization ismore than a switch on the type.
The Union approach also puts all the fields on one object, as opposed to
separating by the type field - this is what I wanted to confirm as
unsupported by protobuf.

On Tue, May 10, 2016, 10:22 Tim Kientzle <t...@kientzle.com> wrote:

> I’m not sure what you think is “unnecessary”.
>
> Are you trying to avoid actually declaring the types of a, b, c, d, etc?
>
> If so, you could use google.protobuf.Struct (which can parse a JSON object
> in a generic way without requiring you to create a .proto at all) or any of
> a number of other popular JSON parsing libraries.
>
> But if you want the type-safety that protobuf provides, then you have to
> actually tell the protoc compiler the type of every field.  In return, you
> can skip a lot of checking in your code.
>
> Cheers,
>
> Tim
>
> > On May 10, 2016, at 7:08 AM, Marco <a.f.ma...@gmail.com> wrote:
> >
> > That does work, but it seems like it creates a lot of unnecessary work
> if there are many fields.
> >
> > Is there a better way to handle a schema more like this?
> >
> >  { type: "error", message: "wrong"} or { type:"ok", a: 1, b:2, c:3, d:4,
> ... }.
> >
> > On Monday, May 9, 2016 at 3:12:19 PM UTC-4, Feng Xiao wrote:
> >
> >
> > On Fri, May 6, 2016 at 8:18 PM, Marco <a.f@gmail.com> wrote:
> > I'm looking to generate de/serialization for json tagged union messages
> from an external rest api, eg.
> > { type: "error", message: "wrong"} or { type:"ok", response: { a: 1, b:
> 2}}.
> >
> > Reading the docs it seems like an any valued field the type field
> modified json_name  would work similarly, although this isn't supported.
> >
> > Is there an existing .proto message that would map to those messages?
> Perhaps with some annotation to this more obvious schema, or being able to
> specify a custom tag to determine which case of a oneof is in use (instead
> of the default enum value)?
> > How about something like:
> >
> > message Response {
> >   string type = 1;
> >   message Content {
> > int32 a = 1;
> > int32 b = 2;
> >   }
> >   oneof OneofResponse {
> > string message = 2;
> > Content response = 3;
> >   }
> > }
> >
> > ?
> >
> > message Error {
> >   string message = 1;
> > }
> >
> > message Second {
> >   int64 response = 1;
> > }
> >
> > message MyUnion {
> >   oneof Either {
> > Error  err = 1;
> > Ok ok  = 2;
> >   }
> > }
> >
> >
> >
> >
> > --
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> >
> >
> > --
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>
>

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Re: [protobuf] Issues in the proto 3 spec

2016-11-29 Thread Marco Willemart
Done :-) 

https://github.com/google/protobuf/issues/2424

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