BSON Google Group

Re: [bson] How to create a BSONObj in iterations? (C++)

2013-03-08T17:00:02Z

Not sure about BSONObj but you can definitely do this append-style building
with mongo-c-driver: [link]

Re: how to post a bson object using curl from a c program

2013-03-08T16:03:30Z

I'm in the middle of this now. I'm using the libcurl libs to interact with
a Sinatra service i.e. not command line curl, I want to post bson up to
Sinatra and thought about just using Base64 encoding. Is this not a
reasonable approach ? Pros and cons ? please
thanks
-Charles

How to create a BSONObj in iterations? (C++)

2013-03-07T23:18:54Z

It looks like the current implementation if BSONObj revolves around
immutability, and one can't even modify an existing field without
recreating the whole object. Is there a way to *add* a field without
recreating the object?
I tried to use addFields, but it asserts that the object is empty. I need

Json.parse error 。help

2013-02-04T06:45:28Z

String sql="{aggregate:\"cms_article\ ",pipeline:[{$match:{$and:
[{\"_id\":{$ne:\"\"}},{\"edito r\":{$regex:/sys/}}]
BasicDBObject bdr=(BasicDBObject)JSON.parse( sql);
there is error .
{aggregate:"cms_article",pipel ine:[{$match:{$and:
[{"_id":{$ne:""}},{"editor":{$ regex:/sys/}}]
^
at com.mongodb.util.JSONParser.pa rse(JSON.java:381)

Re: Mutable BSON

2012-12-29T21:43:00Z

Hi Claudio -
Yes, these files are part of a new BSON API that offers the ability to
modify values in a BSON document, in contrast with the BSONObjBuilder
facility in the C++ driver which builds in a streaming fashion. However,
this interface is currently in active development, and for now it should be

Mutable BSON

2012-12-29T11:16:41Z

I have seen that in the last bson implementation that is contained on
mongodb git repo, there is a folder named mutable BSON. What is intended
for mutable? the ability to update the values for a key?
thanks in advanced?

Re: Element ordering in BSON documents

2012-12-19T15:25:23Z

Hi Gary,
Thanks for the clarification about the BSON specification mandating order
perservation. The question came up for my own C++ API for BSON. I had
originally implemented the == operator to ensure ordering is also
considered but was then intrigued by the possibility of "equivalent"
documents. I decided in favour of also implementing a isEquivalentTo

How to explain the encode of the complex BSON document example in the BSON specification?

2012-12-19T09:30:09Z

{"BSON": ["awesome", 5.05, 1986]}
encoding:
"\x31\x00\x00\x00\x04BSON\x00\ x26\x00
\x00\x00\x020\x00\x08\x00\x00
\x00awesome\x00\x011\x00\x33\x 33\x33\x33\x33\x33
\x14\x40\x102\x00\xc2\x07\x00\ x00
\x00\x00"
How to explain it?
Thanks.

Re: Element ordering in BSON documents

2012-12-13T18:41:49Z

What language are you using? BSON by specification is order preserving.
However, mapping into a data structure is language and/or driver
dependent. Here's what Ruby and the 10gen Ruby driver does, in Ruby 1.9.3
where Hash is order preserving.
$ irb
1.9.3-p327 :001 > require 'bson'
=> true
1.9.3-p327 :002 > { a: 1, b: 2 } == { b: 2, a: 1 }

Element ordering in BSON documents

2012-12-12T17:27:39Z

Hello,
I do not see any mention of it in the specifications, but are two BSON
documents considered identical if they have the exact same elements
regardless of ordering of the elements? I need this to properly implement
my operator == for BSON documents.
Thanks
Rakesh

Re: Independent C++ Library

2012-11-04T13:44:27Z

I downgraded to C++98 and the library compiles and the unit test suite runs
on Windows 7/MSVS 2010 64 bit.

Re: [bson] Re: bson c driver

2012-11-03T09:45:03Z

If you use my[1] BSON implementation for C, you can do all of which you
requested here.
For creating new structures, you have:
- mongo_bson_new_from_data to create a new structure copying the data.
- mongo_bson_new_take_data to create and take ownership of data (must be
freeable with g_free, but generally that works for anyting with free).

Re: BSON size with C driver

2012-11-03T09:36:36Z

I've written an implementation[1] of BSON in C as well, which has a bunch
of BSON buffers[2] created with python and verified in unit tests in C.
Unlike the upstream bson driver, mine doesn't require calling bson_finish()
all over the place (which is what updates the bson size in the first 4
bytes). You might find some of the tests[3] useful for your purpose.

Re: How to test a new driver?

2012-11-02T13:24:20Z

Firstly, we commend you for your efforts. We certainly appreciate any
contributions made.
To help facilitate contributions like this we have begun working on a
'meta' driver project located at
[link]
Currently it is very much in the beginning stages and it's not very likely

Re: How to test a new driver?

2012-11-02T07:29:24Z

Hi Colin, feel free to look at the tests for the node.js implementation at
[link] or the c driver at
[link]. They are actively developed and
should contain a decent set of test cases.