Use the get_blob v4 API method to retrieve an input blob parameter.
short get_blob( void *arg_handle, a_sql_uint32 arg_num, a_v4_extfn_blob **blob )
Use get_blob to retrieve a blob input parameter after calling get_value(). Use the macro EXTFN_IS_INCOMPLETE to determine if a blob object is required to read the data for the value returned from get_value(), if piece_len < total_len. The blob object is returned as an output parameter and is owned by the caller.
get_blob obtains a blob handle that can be used to read the contents of the blob. Call this method only on columns that contain blob objects.
| Parameter | Description |
|---|---|
| arg_handle | Handle to the arguments in the server |
| arg_num | The argument is a number 1...N |
| blob | Output argument containing the blob object |
1 if successful, 0 otherwise.