Hi Kenton,
Thank you for your quick response and your feedback.
I'm going to use option 3, since as you say this will probably be the
fastest solution and I think that it will fit in the best with our
application. You are probably right that this will not be an issue for
most messages that are
Hi all, a guy that isn't working in my company anymore has defined some
protocol buffer messages that we still use. We need to extend these messages
now, but we don't have the .proto file. Is there a straight way to generate
the proto files from the java classes? How could I do this?
Thanks
Hi,
I've looked at protocol buffers, and I've noted that there is no
support for arrays
of values (double, integers). This is a significant drawback, for
example
JSOM, HDF5 etc they all have this.
One post suggested that one should put an array as one single
string in a field
I've did
On Thu, Oct 8, 2009 at 5:35 PM, sergei175 sergei...@googlemail.com wrote:
Hi,
I've looked at protocol buffers, and I've noted that there is no
support for arrays
of values (double, integers). This is a significant drawback, for
example
JSOM, HDF5 etc they all have this.
Have you
Hi,
This is exactly what I've done before putting arrays into a string.
When I've implemented arrays via repeated fields, the program was
even slower,
and the file size was too large (compare to Java serialization
mechanism+ zip).
This is why I've moved my array into a string, thinking
Hi,
This is exactly what I've done before putting arrays into a string.
When I've implemented arrays via repeated fields, the program was
even slower,
and the file size was too large (compare to Java serialization
mechanism+ zip).
If you put the values in a string and do you own array
Ok, this is a simple example of proto buffers file.
I want to write 1000 Records. Each record has its name and
NamedArray
Each array has its name and a set of double numbers, For my example,
I've filled array with 10 000 numbers for all 1000 Records.
There are 2 things you will see:
1)
Hi,
On Thu, Oct 8, 2009 at 10:57, sergei175 sergei...@googlemail.com wrote:
Ok, this is a simple example of proto buffers file.
I want to write 1000 Records. Each record has its name and
NamedArray
Each array has its name and a set of double numbers, For my example,
I've filled array
On Thu, Oct 8, 2009 at 10:57 AM, sergei175 sergei...@googlemail.com wrote:
1) After event 500, even 200MB memory is not enough.
2) It's slower by factor ~5 compare to the java serialization with
the
compression.
Protocol Buffers do not include compression, so to make this comparison
Yikes. That's kind of like someone left you with just .class files without
the .java files.
If you look at the code, though, you will notice that there are comments in
it defining each field, like:
// optional int32 i = 1;
These should be the exact field definitions as they might appear in the
On Thu, Oct 8, 2009 at 11:32, Kenton Varda ken...@google.com wrote:
Yikes. That's kind of like someone left you with just .class files without
the .java files.
If you look at the code, though, you will notice that there are comments in
it defining each field, like:
// optional int32 i =
Hmm, that's true. Although I'm not sure if there's actual code for writing
the .proto file in Java. In C++, descriptors have a DebugString() method
which returns a compilable .proto file.
On Thu, Oct 8, 2009 at 11:41 AM, Henner Zeller h.zel...@acm.org wrote:
On Thu, Oct 8, 2009 at 11:32,
Hi,
I've just downloaded and build a fresh Protocol Buffer package. I'm
planning to use the Java version. I've added protoc to my path and
compiled two .proto files successfully. I've created an eclipse
project, and added the protobuf-java-2.2.0.jar file to the path. The
two generated a
Thanks, I've started to understand this better. Indeed, I have to
implement
my own approach for I/O - protobuf alone is not enough. I only worry
that
my own I/O to read/write records will not be cross platform, so I
could not
benefit from the strength of this package.
On Oct 8, 1:24 pm,
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