[mapguide-users] Displaying shp runtime with session user

[yadi]

I want to create app for monitoring some sensor, like water ground 

The step of app is :
A. Logging data (sms): monitoring sms engine, if incoming new sms,
parsing XYZ data and save it to postgresql (Done)
B. Displaying contour on the web by MGOS: user can create contour
runtime by selected time with session user:
- extract data from postgreSQL to XYZ (.txt) by selected time (Done)
- gridding XYZ text file to grid file (.grd) with surfit (Done)
- contouring grid file (.grd) to shape file (.shp) with gdal_contour
(Done)
- displaying shape file (.shp) (contour) in MGOS (Not yet)

Please help and suggest me to :
- create feature class runtime for shp
- create layer runtime point to new feature class
- shp vs sdf ? which more fast ?

Thanks

YADI