С++ how to manage bsonobjbuilder

[kotovki...@gmail.com]

Hello world! I have few questions about bsonobjbuilder.

1) How can i reset whole bsonobjbuilder? Is that proper way to do that bsonBuilder.bb().reset(); ?

2) I have void* const pBytes and size_t size. received over the internet from another bsonobjbuilder. How can i initialize bsonobjbuilder with this raw data?

3) I need binary data form bsonobjbuilder to send it over the internet, is that proper way to retrieve bin. data and actual size of it? bsonBuilder.bb().buf(); bsonBuilder.len(); ?

Thanks!

[Dwight Merriman]

On Tuesday, May 16, 2017 at 5:57:51 PM UTC-4, kotovki...@gmail.com wrote:

Hello world! I have few questions about bsonobjbuilder.

1) How can i reset whole bsonobjbuilder? Is that proper way to do that bsonBuilder.bb().reset(); ?

 

probably not a good idea.  if it were indended a reset() at the upper class would exist.  

the best thing to do is just allocated a new bsonobjbuilder each time it is not too expensive.

[Dwight Merriman]

2) I have void* const pBytes and size_t size. received over the internet from another bsonobjbuilder. How can i initialize bsonobjbuilder with this raw data?

in that case it is already "built".  so instead perhaps:

    BSONObj myObj(pBytes);

    // do something with it...

 

3) I need binary data form bsonobjbuilder to send it over the internet, is that proper way to retrieve bin. data and actual size of it? bsonBuilder.bb().buf(); bsonBuilder.len(); ?

Thanks!

get a reference to a BSONObj the builder built, and then use the BSONObj methods to get the buf pointer and length for the BSONObj.

something like:

bsonobj o = myBuilder.done();

mySend( o.objdata(), o.objsize() );

 

[kotovki...@gmail.com]

Dwight Merriman thanks you a lot! For second case i need to continue object building that's why i need to construct bsonobjbuilder. Can you suggest me how to manage that properly?

[kotovki...@gmail.com]

Ok, and if i'll send data like you suggest, how can i create new bsonobjbuilder with this data? Thanks!

[kotovki...@gmail.com]

I resolve second issue like that. Is this correct? It works for me.

Packet::Packet( const void* const _pData, int _size )

{

    clear();

    

    auto serializedBson = _bson::bsonobj( static_cast< const char* >( _pData ) );

    mpBsonBuilder->appendElements( serializedBson );

}