[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Perfect, it works!
Thank you Robert, Pherl and everyone for the help.
On Jul 28, 4:16 pm, Robert wrote:
> Hi,
>
> I do only create one FileDescriptor instance that contains all message
> definitions, because they are all constructed dynamically.
> For creating the FileDescriptorProtoBuilder I call:
> FileDescriptorProto.Builder fileDescriptorProtoBuilder =
> FileDescriptorProto.newBuilder();
> Then I create all the message protos by calling (here A and B):
> DescriptorProto.Builder messageProtoBuilderA =
> DescriptorProto.newBuilder();
> messageProtoBuilderA.setName( "A" );
> DescriptorProto.Builder messageProtoBuilderB =
> DescriptorProto.newBuilder();
> messageProtoBuilderB.setName( "B" );
>
> If message A references message B using field f I call:
> messageProtoBuilderA.addFieldBuilder()
> .setName("f")
> .setNumber(2)
> .setTypeName("B");
>
> Then I add the message protos to the file descriptor:
>
> fileDescriptorProtoBuilder.addMessageType(messageProtoBuilderA);
>
> fileDescriptorProtoBuilder.addMessageType(messageProtoBuilderB);
>
> Finally I create the file descriptor using:
> FileDescriptorProto fileDescriptorProto =
> fileDescriptorProtoBuilder.build();
> FileDescriptor fileDescriptor =
> FileDescriptor.buildFrom(fileDescriptorProto, new FileDescriptor[0]);
>
> Now I can create concrete messages by calling:
> Builder messageA =
> DynamicMessage.newBuilder( fileDescriptor.findMessageTypeByName("A") );
> Builder messageB =
> DynamicMessage.newBuilder( fileDescriptor.findMessageTypeByName("B") );
>
> messageA.setField(
>
> fileDescriptor.findMessageTypeByName("A").findFieldByName("f"),
> messageB.build() );
>
> I hope I did not add any errors when abstracting the code and that I
> understood your problem correctly.
>
> Kind regards,
> Robert
>
> On 28 Jul., 14:35, Giancarlo Frison wrote:
>
>
>
>
>
>
>
> > on the field type descriptor previously create i set name as:
> > b2.setName(typename)
>
> > in the container class (which has reference the b2 field) I setup the
> > field as:
> > fb = DescriptorProtos.FieldDescriptorProto.newBuilder()
> > .setName(fieldName).setNumber(i+
> > +).setLabel(label).setTypeName(typename);
> > b1.addField(fb.build());
>
> > For creating the b1 descriptor, first I generate the descriptor of b2
> > then:
> > d1 = b1.build();
> > fdp1 =
> > DescriptorProtos.FileDescriptorProto.newBuilder().addMessageType(d1).build(
> > );
>
> > but I get an error because fdp1.getDependenciesCount()==0
> > (Descriptors.java:233) Dependencies passed to
> > FileDescriptor.buildFrom() don't match those listed in the
> > FileDescriptorProto.
>
> > thrown here:
> > dynamicDescriptor = Descriptors.FileDescriptor.buildFrom(fdp1, fds);
>
> > (fds is array of 1, the b2 descriptor)
>
> > Why the d1 builder doesn't have the dependency defined adding the
> > complex typed field?
>
> > Thanks!!
>
> > Ps.: Robert, it's very kind of you whether send me the related
> > snippet. Thank you
>
> > On Jul 27, 8:10 pm, Pherl Liu wrote:
>
> > > Take a look at the buildFrom() method. You need to provide an array of
> > > FileDescriptor as dependencies. If one of your message field is a complex
> > > type, you should build that complex type first, and pass the built
> > > FileDescriptor object to the buildFrom() in the dependencies array.
>
> > > On Wed, Jul 27, 2011 at 7:36 AM, Giancarlo Frison
> > > wrote:
>
> > > > if I call setTypeName(messageName), how protobuf match the name with
> > > > related Descriptor?
> > > > How can I map messageName and the descriptor of the type?
>
> > > > On Jul 27, 3:56 pm, Robert wrote:
> > > > > Hi,
>
> > > > > you either call setType() for primitive types or setTypeName(String)
> > > > > for referenced messages.
> > > > > You pass in the name of the message.
>
> > > > > Kind regards,
> > > > > Robert
>
> > > > > On 27 Jul., 10:35, Giancarlo Frison wrote:
>
> > > > > > Thank you very much Pherl!
>
> > > > > > An another question. What about not-primitive fields, or message
> > > > > > fields?
>
> > > > > > when I add fields I do:
>
> > > > > > DescriptorProtos.DescriptorProto.Builder desBuilder
> > > > > >
> > > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder =
> > > > > > DescriptorProtos.FieldDescriptorProto.newBuilder()
> > > > > > .setName(fieldName).setNumber(i+
> > > > > > +).setType(type).setLabel(label);
> > > > > > desBuilder.addField(fd1Builder.build());
>
> > > > > > with message typed field I set type as
> > > > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I
> > > > > > describe the field type?
> > > > > > I mean, I suppose to describe the field with
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Hi,
I do only create one FileDescriptor instance that contains all message
definitions, because they are all constructed dynamically.
For creating the FileDescriptorProtoBuilder I call:
FileDescriptorProto.Builder fileDescriptorProtoBuilder =
FileDescriptorProto.newBuilder();
Then I create all the message protos by calling (here A and B):
DescriptorProto.Builder messageProtoBuilderA =
DescriptorProto.newBuilder();
messageProtoBuilderA.setName( "A" );
DescriptorProto.Builder messageProtoBuilderB =
DescriptorProto.newBuilder();
messageProtoBuilderB.setName( "B" );
If message A references message B using field f I call:
messageProtoBuilderA.addFieldBuilder()
.setName("f")
.setNumber(2)
.setTypeName("B");
Then I add the message protos to the file descriptor:
fileDescriptorProtoBuilder.addMessageType(messageProtoBuilderA);
fileDescriptorProtoBuilder.addMessageType(messageProtoBuilderB);
Finally I create the file descriptor using:
FileDescriptorProto fileDescriptorProto =
fileDescriptorProtoBuilder.build();
FileDescriptor fileDescriptor =
FileDescriptor.buildFrom(fileDescriptorProto, new FileDescriptor[0]);
Now I can create concrete messages by calling:
Builder messageA =
DynamicMessage.newBuilder( fileDescriptor.findMessageTypeByName("A") );
Builder messageB =
DynamicMessage.newBuilder( fileDescriptor.findMessageTypeByName("B") );
messageA.setField(
fileDescriptor.findMessageTypeByName("A").findFieldByName("f"),
messageB.build() );
I hope I did not add any errors when abstracting the code and that I
understood your problem correctly.
Kind regards,
Robert
On 28 Jul., 14:35, Giancarlo Frison wrote:
> on the field type descriptor previously create i set name as:
> b2.setName(typename)
>
> in the container class (which has reference the b2 field) I setup the
> field as:
> fb = DescriptorProtos.FieldDescriptorProto.newBuilder()
> .setName(fieldName).setNumber(i+
> +).setLabel(label).setTypeName(typename);
> b1.addField(fb.build());
>
> For creating the b1 descriptor, first I generate the descriptor of b2
> then:
> d1 = b1.build();
> fdp1 =
> DescriptorProtos.FileDescriptorProto.newBuilder().addMessageType(d1).build();
>
> but I get an error because fdp1.getDependenciesCount()==0
> (Descriptors.java:233) Dependencies passed to
> FileDescriptor.buildFrom() don't match those listed in the
> FileDescriptorProto.
>
> thrown here:
> dynamicDescriptor = Descriptors.FileDescriptor.buildFrom(fdp1, fds);
>
> (fds is array of 1, the b2 descriptor)
>
> Why the d1 builder doesn't have the dependency defined adding the
> complex typed field?
>
> Thanks!!
>
> Ps.: Robert, it's very kind of you whether send me the related
> snippet. Thank you
>
> On Jul 27, 8:10 pm, Pherl Liu wrote:
>
>
>
> > Take a look at the buildFrom() method. You need to provide an array of
> > FileDescriptor as dependencies. If one of your message field is a complex
> > type, you should build that complex type first, and pass the built
> > FileDescriptor object to the buildFrom() in the dependencies array.
>
> > On Wed, Jul 27, 2011 at 7:36 AM, Giancarlo Frison wrote:
>
> > > if I call setTypeName(messageName), how protobuf match the name with
> > > related Descriptor?
> > > How can I map messageName and the descriptor of the type?
>
> > > On Jul 27, 3:56 pm, Robert wrote:
> > > > Hi,
>
> > > > you either call setType() for primitive types or setTypeName(String)
> > > > for referenced messages.
> > > > You pass in the name of the message.
>
> > > > Kind regards,
> > > > Robert
>
> > > > On 27 Jul., 10:35, Giancarlo Frison wrote:
>
> > > > > Thank you very much Pherl!
>
> > > > > An another question. What about not-primitive fields, or message
> > > > > fields?
>
> > > > > when I add fields I do:
>
> > > > > DescriptorProtos.DescriptorProto.Builder desBuilder
> > > > >
> > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder =
> > > > > DescriptorProtos.FieldDescriptorProto.newBuilder()
> > > > > .setName(fieldName).setNumber(i+
> > > > > +).setType(type).setLabel(label);
> > > > > desBuilder.addField(fd1Builder.build());
>
> > > > > with message typed field I set type as
> > > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I
> > > > > describe the field type?
> > > > > I mean, I suppose to describe the field with a inner
> > > > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can
> > > > > do to describe a complex type field?
>
> > > > > Thanks!
>
> > > > > On Jul 26, 8:21 pm, Pherl Liu wrote:
>
> > > > > > Not sure if I understand your question correctly. You can set the
> > > label in
> > > > > > FieldDescriptorProto:
>
>
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
on the field type descriptor previously create i set name as: b2.setName(typename) in the container class (which has reference the b2 field) I setup the field as: fb = DescriptorProtos.FieldDescriptorProto.newBuilder() .setName(fieldName).setNumber(i+ +).setLabel(label).setTypeName(typename); b1.addField(fb.build()); For creating the b1 descriptor, first I generate the descriptor of b2 then: d1 = b1.build(); fdp1 = DescriptorProtos.FileDescriptorProto.newBuilder().addMessageType(d1).build(); but I get an error because fdp1.getDependenciesCount()==0 (Descriptors.java:233) Dependencies passed to FileDescriptor.buildFrom() don't match those listed in the FileDescriptorProto. thrown here: dynamicDescriptor = Descriptors.FileDescriptor.buildFrom(fdp1, fds); (fds is array of 1, the b2 descriptor) Why the d1 builder doesn't have the dependency defined adding the complex typed field? Thanks!! Ps.: Robert, it's very kind of you whether send me the related snippet. Thank you On Jul 27, 8:10 pm, Pherl Liu wrote: > Take a look at the buildFrom() method. You need to provide an array of > FileDescriptor as dependencies. If one of your message field is a complex > type, you should build that complex type first, and pass the built > FileDescriptor object to the buildFrom() in the dependencies array. > > On Wed, Jul 27, 2011 at 7:36 AM, Giancarlo Frison wrote: > > > > > > > > > if I call setTypeName(messageName), how protobuf match the name with > > related Descriptor? > > How can I map messageName and the descriptor of the type? > > > On Jul 27, 3:56 pm, Robert wrote: > > > Hi, > > > > you either call setType() for primitive types or setTypeName(String) > > > for referenced messages. > > > You pass in the name of the message. > > > > Kind regards, > > > Robert > > > > On 27 Jul., 10:35, Giancarlo Frison wrote: > > > > > Thank you very much Pherl! > > > > > An another question. What about not-primitive fields, or message > > > > fields? > > > > > when I add fields I do: > > > > > DescriptorProtos.DescriptorProto.Builder desBuilder > > > > > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > > > > DescriptorProtos.FieldDescriptorProto.newBuilder() > > > > .setName(fieldName).setNumber(i+ > > > > +).setType(type).setLabel(label); > > > > desBuilder.addField(fd1Builder.build()); > > > > > with message typed field I set type as > > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > > > > describe the field type? > > > > I mean, I suppose to describe the field with a inner > > > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > > > > do to describe a complex type field? > > > > > Thanks! > > > > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > > > Not sure if I understand your question correctly. You can set the > > label in > > > > > FieldDescriptorProto: > > > > > > LABEL_OPTIONAL = 1; > > > > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison < > > gfri...@chelab.com>wrote: > > > > > > > There is this example that I'm approaching to re-implement > > >http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > > > > a question: > > > > > > > How to handle repeated fields? How can you describe them in the > > > > > > fieldDescriptor? > > > > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > > > > Hi all, > > > > > > > > I've got 2 questions: > > > > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in > > Java? > > > > > > > In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > > > > functionality. > > > > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > > > > In cpp, I'm using DynamicMessageFactory class's > > 'GetPrototype()' > > > > > > > functionality. > > > > > > > > thanks > > > > > > > -- > > > > > > You received this message because you are subscribed to the Google > > Groups > > > > > > "Protocol Buffers" group. > > > > > > To post to this group, send email to protobuf@googlegroups.com. > > > > > > To unsubscribe from this group, send email to > > > > > > protobuf+unsubscr...@googlegroups.com. > > > > > > For more options, visit this group at > > > > > >http://groups.google.com/group/protobuf?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Protocol Buffers" group. > > To post to this group, send email to protobuf@googlegroups.com. > > To unsubscribe from this group, send email to > > protobuf+unsubscr...@googlegroups.com. > > For more options, visit this group at > >http://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at ht
Re: [protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Take a look at the buildFrom() method. You need to provide an array of FileDescriptor as dependencies. If one of your message field is a complex type, you should build that complex type first, and pass the built FileDescriptor object to the buildFrom() in the dependencies array. On Wed, Jul 27, 2011 at 7:36 AM, Giancarlo Frison wrote: > if I call setTypeName(messageName), how protobuf match the name with > related Descriptor? > How can I map messageName and the descriptor of the type? > > On Jul 27, 3:56 pm, Robert wrote: > > Hi, > > > > you either call setType() for primitive types or setTypeName(String) > > for referenced messages. > > You pass in the name of the message. > > > > Kind regards, > > Robert > > > > On 27 Jul., 10:35, Giancarlo Frison wrote: > > > > > > > > > > > > > > > > > Thank you very much Pherl! > > > > > An another question. What about not-primitive fields, or message > > > fields? > > > > > when I add fields I do: > > > > > DescriptorProtos.DescriptorProto.Builder desBuilder > > > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > > > DescriptorProtos.FieldDescriptorProto.newBuilder() > > > .setName(fieldName).setNumber(i+ > > > +).setType(type).setLabel(label); > > > desBuilder.addField(fd1Builder.build()); > > > > > with message typed field I set type as > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > > > describe the field type? > > > I mean, I suppose to describe the field with a inner > > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > > > do to describe a complex type field? > > > > > Thanks! > > > > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > > > Not sure if I understand your question correctly. You can set the > label in > > > > FieldDescriptorProto: > > > > > > LABEL_OPTIONAL = 1; > > > > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison < > gfri...@chelab.com>wrote: > > > > > > > There is this example that I'm approaching to re-implement > > > > > > http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > > > > a question: > > > > > > > How to handle repeated fields? How can you describe them in the > > > > > fieldDescriptor? > > > > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > > > Hi all, > > > > > > > > I've got 2 questions: > > > > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in > Java? > > > > > >In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > > > functionality. > > > > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > > >In cpp, I'm using DynamicMessageFactory class's > 'GetPrototype()' > > > > > > functionality. > > > > > > > > thanks > > > > > > > -- > > > > > You received this message because you are subscribed to the Google > Groups > > > > > "Protocol Buffers" group. > > > > > To post to this group, send email to protobuf@googlegroups.com. > > > > > To unsubscribe from this group, send email to > > > > > protobuf+unsubscr...@googlegroups.com. > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/protobuf?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To post to this group, send email to protobuf@googlegroups.com. > To unsubscribe from this group, send email to > protobuf+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/protobuf?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
You have to define the name when constructing the DescriptorProto. I have done this myself lately but unfortunately I am currently not in the office. But I can send you an example tomorrow of you like. Kind regards Robert On 27 Jul., 16:36, Giancarlo Frison wrote: > if I call setTypeName(messageName), how protobuf match the name with > related Descriptor? > How can I map messageName and the descriptor of the type? > > On Jul 27, 3:56 pm, Robert wrote: > > > > > Hi, > > > you either call setType() for primitive types or setTypeName(String) > > for referenced messages. > > You pass in the name of the message. > > > Kind regards, > > Robert > > > On 27 Jul., 10:35, Giancarlo Frison wrote: > > > > Thank you very much Pherl! > > > > An another question. What about not-primitive fields, or message > > > fields? > > > > when I add fields I do: > > > > DescriptorProtos.DescriptorProto.Builder desBuilder > > > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > > > DescriptorProtos.FieldDescriptorProto.newBuilder() > > > .setName(fieldName).setNumber(i+ > > > +).setType(type).setLabel(label); > > > desBuilder.addField(fd1Builder.build()); > > > > with message typed field I set type as > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > > > describe the field type? > > > I mean, I suppose to describe the field with a inner > > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > > > do to describe a complex type field? > > > > Thanks! > > > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > > Not sure if I understand your question correctly. You can set the label > > > > in > > > > FieldDescriptorProto: > > > > > LABEL_OPTIONAL = 1; > > > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison > > > > wrote: > > > > > > There is this example that I'm approaching to re-implement > > > > >http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > > > a question: > > > > > > How to handle repeated fields? How can you describe them in the > > > > > fieldDescriptor? > > > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > > > Hi all, > > > > > > > I've got 2 questions: > > > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in > > > > > > Java? > > > > > > In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > > > functionality. > > > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > > > In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > > > > > > functionality. > > > > > > > thanks > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups > > > > > "Protocol Buffers" group. > > > > > To post to this group, send email to protobuf@googlegroups.com. > > > > > To unsubscribe from this group, send email to > > > > > protobuf+unsubscr...@googlegroups.com. > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
Re: [protobuf] Re: Java - DynamicMessage and FileDescriptorProto
The descriptor building libraries handle cross linking. The message type name must be defined in either the same file, or be available through one of the file's imports. On Wed, Jul 27, 2011 at 7:36 AM, Giancarlo Frison wrote: > if I call setTypeName(messageName), how protobuf match the name with > related Descriptor? > How can I map messageName and the descriptor of the type? > > On Jul 27, 3:56 pm, Robert wrote: > > Hi, > > > > you either call setType() for primitive types or setTypeName(String) > > for referenced messages. > > You pass in the name of the message. > > > > Kind regards, > > Robert > > > > On 27 Jul., 10:35, Giancarlo Frison wrote: > > > > > > > > > > > > > > > > > Thank you very much Pherl! > > > > > An another question. What about not-primitive fields, or message > > > fields? > > > > > when I add fields I do: > > > > > DescriptorProtos.DescriptorProto.Builder desBuilder > > > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > > > DescriptorProtos.FieldDescriptorProto.newBuilder() > > > .setName(fieldName).setNumber(i+ > > > +).setType(type).setLabel(label); > > > desBuilder.addField(fd1Builder.build()); > > > > > with message typed field I set type as > > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > > > describe the field type? > > > I mean, I suppose to describe the field with a inner > > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > > > do to describe a complex type field? > > > > > Thanks! > > > > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > > > Not sure if I understand your question correctly. You can set the > label in > > > > FieldDescriptorProto: > > > > > > LABEL_OPTIONAL = 1; > > > > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison < > gfri...@chelab.com>wrote: > > > > > > > There is this example that I'm approaching to re-implement > > > > > > http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > > > > a question: > > > > > > > How to handle repeated fields? How can you describe them in the > > > > > fieldDescriptor? > > > > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > > > Hi all, > > > > > > > > I've got 2 questions: > > > > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in > Java? > > > > > >In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > > > functionality. > > > > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > > >In cpp, I'm using DynamicMessageFactory class's > 'GetPrototype()' > > > > > > functionality. > > > > > > > > thanks > > > > > > > -- > > > > > You received this message because you are subscribed to the Google > Groups > > > > > "Protocol Buffers" group. > > > > > To post to this group, send email to protobuf@googlegroups.com. > > > > > To unsubscribe from this group, send email to > > > > > protobuf+unsubscr...@googlegroups.com. > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/protobuf?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To post to this group, send email to protobuf@googlegroups.com. > To unsubscribe from this group, send email to > protobuf+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/protobuf?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
if I call setTypeName(messageName), how protobuf match the name with related Descriptor? How can I map messageName and the descriptor of the type? On Jul 27, 3:56 pm, Robert wrote: > Hi, > > you either call setType() for primitive types or setTypeName(String) > for referenced messages. > You pass in the name of the message. > > Kind regards, > Robert > > On 27 Jul., 10:35, Giancarlo Frison wrote: > > > > > > > > > Thank you very much Pherl! > > > An another question. What about not-primitive fields, or message > > fields? > > > when I add fields I do: > > > DescriptorProtos.DescriptorProto.Builder desBuilder > > > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > > DescriptorProtos.FieldDescriptorProto.newBuilder() > > .setName(fieldName).setNumber(i+ > > +).setType(type).setLabel(label); > > desBuilder.addField(fd1Builder.build()); > > > with message typed field I set type as > > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > > describe the field type? > > I mean, I suppose to describe the field with a inner > > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > > do to describe a complex type field? > > > Thanks! > > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > Not sure if I understand your question correctly. You can set the label in > > > FieldDescriptorProto: > > > > LABEL_OPTIONAL = 1; > > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison > > > wrote: > > > > > There is this example that I'm approaching to re-implement > > > >http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > > a question: > > > > > How to handle repeated fields? How can you describe them in the > > > > fieldDescriptor? > > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > > Hi all, > > > > > > I've got 2 questions: > > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in Java? > > > > > In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > > functionality. > > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > > In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > > > > > functionality. > > > > > > thanks > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups > > > > "Protocol Buffers" group. > > > > To post to this group, send email to protobuf@googlegroups.com. > > > > To unsubscribe from this group, send email to > > > > protobuf+unsubscr...@googlegroups.com. > > > > For more options, visit this group at > > > >http://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Hi, you either call setType() for primitive types or setTypeName(String) for referenced messages. You pass in the name of the message. Kind regards, Robert On 27 Jul., 10:35, Giancarlo Frison wrote: > Thank you very much Pherl! > > An another question. What about not-primitive fields, or message > fields? > > when I add fields I do: > > DescriptorProtos.DescriptorProto.Builder desBuilder > > DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = > DescriptorProtos.FieldDescriptorProto.newBuilder() > .setName(fieldName).setNumber(i+ > +).setType(type).setLabel(label); > desBuilder.addField(fd1Builder.build()); > > with message typed field I set type as > 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I > describe the field type? > I mean, I suppose to describe the field with a inner > 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can > do to describe a complex type field? > > Thanks! > > On Jul 26, 8:21 pm, Pherl Liu wrote: > > > > > Not sure if I understand your question correctly. You can set the label in > > FieldDescriptorProto: > > > LABEL_OPTIONAL = 1; > > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison > > wrote: > > > > There is this example that I'm approaching to re-implement > > >http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > > a question: > > > > How to handle repeated fields? How can you describe them in the > > > fieldDescriptor? > > > > On Jul 18, 5:20 pm, yoave wrote: > > > > Hi all, > > > > > I've got 2 questions: > > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in Java? > > > > In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > > functionality. > > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > > In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > > > > functionality. > > > > > thanks > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "Protocol Buffers" group. > > > To post to this group, send email to protobuf@googlegroups.com. > > > To unsubscribe from this group, send email to > > > protobuf+unsubscr...@googlegroups.com. > > > For more options, visit this group at > > >http://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Thank you very much Pherl! An another question. What about not-primitive fields, or message fields? when I add fields I do: DescriptorProtos.DescriptorProto.Builder desBuilder DescriptorProtos.FieldDescriptorProto.Builder fd1Builder = DescriptorProtos.FieldDescriptorProto.newBuilder() .setName(fieldName).setNumber(i+ +).setType(type).setLabel(label); desBuilder.addField(fd1Builder.build()); with message typed field I set type as 'DescriptorProtos.FieldDescriptorProto.Type.TYPE_MESSAGE'. How do I describe the field type? I mean, I suppose to describe the field with a inner 'DescriptorProtos.DescriptorProto.Builder', is it correct? How I can do to describe a complex type field? Thanks! On Jul 26, 8:21 pm, Pherl Liu wrote: > Not sure if I understand your question correctly. You can set the label in > FieldDescriptorProto: > > LABEL_OPTIONAL = 1; > > LABEL_REQUIRED = 2;LABEL_REPEATED = 3; > > On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison wrote: > > > > > > > > > There is this example that I'm approaching to re-implement > >http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > > a question: > > > How to handle repeated fields? How can you describe them in the > > fieldDescriptor? > > > On Jul 18, 5:20 pm, yoave wrote: > > > Hi all, > > > > I've got 2 questions: > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in Java? > > > In cpp, I'm using DescriptorPool class's 'BuildFile()' > > > functionality. > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > > > In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > > > functionality. > > > > thanks > > > -- > > You received this message because you are subscribed to the Google Groups > > "Protocol Buffers" group. > > To post to this group, send email to protobuf@googlegroups.com. > > To unsubscribe from this group, send email to > > protobuf+unsubscr...@googlegroups.com. > > For more options, visit this group at > >http://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
Re: [protobuf] Re: Java - DynamicMessage and FileDescriptorProto
Not sure if I understand your question correctly. You can set the label in FieldDescriptorProto: LABEL_OPTIONAL = 1; LABEL_REQUIRED = 2;LABEL_REPEATED = 3; On Tue, Jul 26, 2011 at 12:21 AM, Giancarlo Frison wrote: > There is this example that I'm approaching to re-implement > http://flori.posterous.com/dynamically-creating-protocol-buffer-objects > > a question: > > How to handle repeated fields? How can you describe them in the > fieldDescriptor? > > > > On Jul 18, 5:20 pm, yoave wrote: > > Hi all, > > > > I've got 2 questions: > > > > 1. how do I generate a Descriptor from a FileDescriptorProto in Java? > >In cpp, I'm using DescriptorPool class's 'BuildFile()' > > functionality. > > > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > >In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > > functionality. > > > > thanks > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To post to this group, send email to protobuf@googlegroups.com. > To unsubscribe from this group, send email to > protobuf+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/protobuf?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
[protobuf] Re: Java - DynamicMessage and FileDescriptorProto
There is this example that I'm approaching to re-implement http://flori.posterous.com/dynamically-creating-protocol-buffer-objects a question: How to handle repeated fields? How can you describe them in the fieldDescriptor? On Jul 18, 5:20 pm, yoave wrote: > Hi all, > > I've got 2 questions: > > 1. how do I generate a Descriptor from a FileDescriptorProto in Java? > In cpp, I'm using DescriptorPool class's 'BuildFile()' > functionality. > > 2. how do I generate a Dynamic Message from a Descriptor in Java? > In cpp, I'm using DynamicMessageFactory class's 'GetPrototype()' > functionality. > > thanks -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
