subject:"Re\: \[protobuf\] he simple code bellow doesn't work. Is it the best way to use Any \? I'm just trying to read from\/write to Any and identify the type stored by Any."

Re: [protobuf] he simple code bellow doesn't work. Is it the best way to use Any ? I'm just trying to read from/write to Any and identify the type stored by Any.

2015-07-14 Thread Edgard Lima


Thanks, works like a charm!


On Monday, July 6, 2015 at 6:13:33 PM UTC-3, Feng Xiao wrote:



 On Mon, Jul 6, 2015 at 11:23 AM, Edgard Lima edgar...@gmail.com 
 javascript: wrote:

 // my .proto
 syntax = proto3;import google/protobuf/any.proto;
 message CommandListPrinters {}
 message Commands {
   int32 id = 1;
   repeated google.protobuf.Any command = 2;}

 // my.java

 CommandListPrinters commandListPrinters = 
 CommandListPrinters.newBuilder().build();Any any = 
 Any.newBuilder().setValue(commandListPrinters.toByteString()).build();Commands.Builder
  commandsBuilder = Commands.newBuilder().setId(0);
 commandsBuilder.addCommand(any);Commands commands = 
 commandsBuilder.build();//byte [] ba = commands.toByteArray();
 Commands cmds2 = Commands.parseFrom(ba);for (Any any2 : 
 cmds2.getCommandList()) {
 Descriptor fe = any2.getDescriptorForType();

 // This IF is FALSE;
 if (fe.equals(CommandListPrinters.getDescriptor()) ) {
 CommandListPrinters cmdLR = 
 CommandListPrinters.parseFrom(any2.getValue());
 }
 }

 We will add some helper functions in Java to ease the use of Any pretty 
 soon. For the time being you will probably use Any like this:

 String getTypeUrl(Descriptor descriptor) {
   return type.googleapis.com/ + descriptor.getFullName();
 }

 // Create Any message:
 Any createAny(Message message) {
   return Any.newBuilder()
   .setTypeId(getTypeUrl(message.getDescriptorForType()))
   .setValue(message.toByteString())
   .build();
 }

 CommandListPrinters commandListPrinters = 
 CommandListPrinters.newBuilder().build();
 Commands.Builder commandsBuilder = Commands.newBuilder().setId(0);
 commandsBuilder.addCommand(createAny(commandListPrinters));
 Commands commands = commandsBuilder.build();
  

 for (Any any : commands.getCommandList()) {
   if 
 (any.getTypeUrl().equals(getTypeUrl(CommandListPrinters.getDescriptor( {
 CommandListPrinters cmdLR = 
 CommandListPrinters.parseFrom(any2.getValue());
 ...
   }
 }

 With the helper functions we will introduce soon, the code will be 
 simplified to this:


 CommandListPrinters commandListPrinters = 
 CommandListPrinters.newBuilder().build();
 Commands.Builder commandsBuilder = Commands.newBuilder().setId(0);
 commandsBuilder.addCommand(*Any.pack(commandListPrinters)*);
 Commands commands = commandsBuilder.build();
  

 for (Any any : commands.getCommandList()) {
   if (*any.is http://any.is(CommandListPrinters.getClass())*) {
 CommandListPrinters cmdLR = 
 *any.unpack(CommandListPrinters.getClass())*;
 ...
   }
 }

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Re: [protobuf] he simple code bellow doesn't work. Is it the best way to use Any ? I'm just trying to read from/write to Any and identify the type stored by Any.

2015-07-06 Thread 'Feng Xiao' via Protocol Buffers

On Mon, Jul 6, 2015 at 11:23 AM, Edgard Lima edgard.l...@gmail.com wrote:

 // my .proto
 syntax = proto3;import google/protobuf/any.proto;
 message CommandListPrinters {}
 message Commands {
   int32 id = 1;
   repeated google.protobuf.Any command = 2;}

 // my.java

 CommandListPrinters commandListPrinters = 
 CommandListPrinters.newBuilder().build();Any any = 
 Any.newBuilder().setValue(commandListPrinters.toByteString()).build();Commands.Builder
  commandsBuilder = Commands.newBuilder().setId(0);
 commandsBuilder.addCommand(any);Commands commands = 
 commandsBuilder.build();//byte [] ba = commands.toByteArray();
 Commands cmds2 = Commands.parseFrom(ba);for (Any any2 : 
 cmds2.getCommandList()) {
 Descriptor fe = any2.getDescriptorForType();

 // This IF is FALSE;
 if (fe.equals(CommandListPrinters.getDescriptor()) ) {
 CommandListPrinters cmdLR = 
 CommandListPrinters.parseFrom(any2.getValue());
 }
 }

 We will add some helper functions in Java to ease the use of Any pretty
soon. For the time being you will probably use Any like this:

String getTypeUrl(Descriptor descriptor) {
  return type.googleapis.com/ + descriptor.getFullName();
}

// Create Any message:
Any createAny(Message message) {
  return Any.newBuilder()
  .setTypeId(getTypeUrl(message.getDescriptorForType()))
  .setValue(message.toByteString())
  .build();
}

CommandListPrinters commandListPrinters =
CommandListPrinters.newBuilder().build();
Commands.Builder commandsBuilder = Commands.newBuilder().setId(0);
commandsBuilder.addCommand(createAny(commandListPrinters));
Commands commands = commandsBuilder.build();


for (Any any : commands.getCommandList()) {
  if
(any.getTypeUrl().equals(getTypeUrl(CommandListPrinters.getDescriptor( {
CommandListPrinters cmdLR =
CommandListPrinters.parseFrom(any2.getValue());
...
  }
}

With the helper functions we will introduce soon, the code will be
simplified to this:


CommandListPrinters commandListPrinters =
CommandListPrinters.newBuilder().build();
Commands.Builder commandsBuilder = Commands.newBuilder().setId(0);
commandsBuilder.addCommand(*Any.pack(commandListPrinters)*);
Commands commands = commandsBuilder.build();


for (Any any : commands.getCommandList()) {
  if (*any.is http://any.is(CommandListPrinters.getClass())*) {
CommandListPrinters cmdLR = *any.unpack(CommandListPrinters.getClass())*
;
...
  }
}

 --
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 To post to this group, send email to protobuf@googlegroups.com.
 Visit this group at http://groups.google.com/group/protobuf.
 For more options, visit https://groups.google.com/d/optout.


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Re: [protobuf] he simple code bellow doesn't work. Is it the best way to use Any ? I'm just trying to read from/write to Any and identify the type stored by Any.

Re: [protobuf] he simple code bellow doesn't work. Is it the best way to use Any ? I'm just trying to read from/write to Any and identify the type stored by Any.

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