///PD_TRACE_DECLARE_FUNCTION ( SDB__MTHSLICEBUILD, "mthSliceBuild" )
INT32 mthSliceBuild( const CHAR *fieldName,
const bson::BSONElement &e,
_mthSAction *action,
bson::BSONObjBuilder &builder )
{
INT32 rc = SDB_OK ;
PD_TRACE_ENTRY( SDB__MTHSLICEBUILD ) ;
SDB_ASSERT( NULL != action, "can not be null" ) ;
INT32 begin = 0 ;
INT32 limit = -1 ;
if ( e.eoo() )
{
goto done ;
}
else if ( Array == e.type() )
{
action->getSlicePair( begin, limit ) ;
_mthSliceIterator i( e.embeddedObject(),
begin, limit ) ;
BSONArrayBuilder sliceBuilder( builder.subarrayStart( fieldName ) ) ;
while ( i.more() )
{
sliceBuilder.append( i.next() ) ;
}
sliceBuilder.doneFast() ;
}
else
{
builder.append( e ) ;
}
done:
PD_TRACE_EXITRC( SDB__MTHSLICEBUILD, rc ) ;
return rc ;
}
///PD_TRACE_DECLARE_FUNCTION ( SDB__MTHELEMMATCHBUILDN, "mthElemMatchBuildN" )
static INT32 mthElemMatchBuildN( const CHAR *fieldName,
const bson::BSONElement &e,
_mthSAction *action,
bson::BSONObjBuilder &builder,
INT32 n )
{
INT32 rc = SDB_OK ;
PD_TRACE_ENTRY( SDB__MTHELEMMATCHBUILDN ) ;
if ( Array == e.type() )
{
BSONArrayBuilder arrayBuilder( builder.subarrayStart( fieldName ) ) ;
_mthElemMatchIterator i( e.embeddedObject(),
&( action->getMatcher() ),
n ) ;
do
{
BSONElement next ;
rc = i.next( next ) ;
if ( SDB_OK == rc )
{
arrayBuilder.append( next ) ;
}
else if ( SDB_DMS_EOC == rc )
{
arrayBuilder.doneFast() ;
rc = SDB_OK ;
break ;
}
else
{
PD_LOG( PDERROR, "failed to get next element:%d", rc ) ;
goto error ;
}
} while ( TRUE ) ;
}
done:
PD_TRACE_EXITRC( SDB__MTHELEMMATCHBUILDN, rc ) ;
return rc ;
error:
goto done ;
}