INT32 _msgBuffer::write( const bson::BSONObj &obj, BOOLEAN align, INT32 bytes )
{
INT32 rc = SDB_OK ;
INT32 size = 0 ; // new size to realloc
INT32 num = 0 ; // number of memory block
UINT32 objsize = obj.objsize() ;
if( objsize > _capacity - _size )
{
num = ( objsize + _size ) / MEMERY_BLOCK_SIZE + 1 ;
size = num * MEMERY_BLOCK_SIZE ;
rc = realloc( _data, size ) ;
if( SDB_OK != rc )
{
goto error ;
}
}
ossMemcpy( _data + _size, obj.objdata(), objsize ) ;
if ( align )
{
_size += ossRoundUpToMultipleX( objsize, bytes ) ;
}
else
{
_size += objsize ;
}
done:
return rc ;
error:
goto done ;
}
int MongoBase::Insert(std::string name,bson::BSONObj& doc,int flag /* = 0 */)
{
return this->doInsert(name.c_str(),name.size(),flag,doc.objdata(),doc.objsize());
}
int MongoBase::Update(std::string name,int flag,bson::BSONObj& selector,bson::BSONObj& updator)
{
return this->doUpdate(name.c_str(),name.size(),flag,selector.objdata(),selector.objsize(),updator.objdata(),updator.objsize());
}
int MongoBase::Query(MongoQuery* reply,std::string name,bson::BSONObj& query,bson::BSONObj& selector,int flag /* = 0 */,int skip /* = 0 */,int number /* = 100 */)
{
int session = this->doQuery(name.c_str(),name.size(),query.objdata(),query.objsize(),selector.objdata(),selector.objsize(),flag,skip,number);
_queryCallBack[session] = boost::bind(&MongoBase::QueryReply,this,reply,_1,_2);
return session;
}
// PD_TRACE_DECLARE_FUNCTION ( SDB__MTHSELECTOR__BUILDCSV, "_mthSelector::_buildCSV" )
INT32 _mthSelector::_buildCSV( const bson::BSONObj &obj,
bson::BSONObj &csv )
{
INT32 rc = SDB_OK ;
PD_TRACE_ENTRY( SDB__MTHSELECTOR__BUILDCSV ) ;
BOOLEAN result = FALSE ;
INT32 stringLength = 0 ;
// in the first round, let's allocate memory
if ( 0 == _stringOutputBufferSize )
{
rc = mthDoubleBufferSize ( &_stringOutputBuffer,
_stringOutputBufferSize ) ;
PD_RC_CHECK ( rc, PDERROR,
"Failed to append string, rc = %d", rc ) ;
}
_stringOutputBuffer[FIRST_ELEMENT_STARTING_POS-6] = String ;
_stringOutputBuffer[FIRST_ELEMENT_STARTING_POS-5] = '\0' ;
while ( _stringOutputBufferSize < MAX_SELECTOR_BUFFER_THRESHOLD )
{
result = rawbson2csv ( obj.objdata(),
&_stringOutputBuffer[FIRST_ELEMENT_STARTING_POS],
_stringOutputBufferSize-FIRST_ELEMENT_STARTING_POS ) ;
if ( result )
{
break ;
}
else
{
rc = mthDoubleBufferSize ( &_stringOutputBuffer,
_stringOutputBufferSize ) ;
PD_RC_CHECK ( rc, PDERROR,
"Failed to double buffer, rc = %d", rc ) ;
}
}
if ( _stringOutputBufferSize >= MAX_SELECTOR_BUFFER_THRESHOLD )
{
PD_LOG ( PDERROR,
"string output buffer size is greater than threshold" ) ;
rc = SDB_INVALIDARG ;
goto error ;
}
stringLength =
ossStrlen ( &_stringOutputBuffer[FIRST_ELEMENT_STARTING_POS] ) ;
// assign object length, 1 for 0 at the end, 1 for the eoo
*(INT32*)_stringOutputBuffer = FIRST_ELEMENT_STARTING_POS + 2 +
stringLength ;
_stringOutputBuffer[ *(INT32*)_stringOutputBuffer -1 ] = EOO ;
// assign string length, 1 for 0 at the end
*(INT32*)(&_stringOutputBuffer[FIRST_ELEMENT_STARTING_POS-4]) =
stringLength + 1 ;
// it should not cause memory leak even if there's previous owned
// buffer because _stringOutputBuffer is owned by context, and we don't
// touch holder in BSONObj, so smart pointer should still holding the
// original buffer it owns
csv.init ( _stringOutputBuffer ) ;
done:
PD_TRACE_EXITRC( SDB__MTHSELECTOR__BUILDCSV, rc ) ;
return rc ;
error:
goto done ;
}
