[udm-dev] Re: How to get access to GME object IDs using Udm?

[Endre Magyari]

Attila,

	udm uniqued IDs in case of GME backend are derived from GME unique IDs  
with a mechanism which is invertable:

		swscanf(nn, OLESTR("id-%04lx-%08lx"), &c, &p) != 2 || (c-=100) >  
OBJTYPE_FOLDER || c < OBJTYPE_MODEL || p > 100000000)
		return 100000000 * c + p;

	(nn is the GME id - string)

	This is needed because GME IDs are strings and UDM ids are unsigned long  
ints.

	My way of getting back the GME string ID from UDM id -  I needed in MILAN  
project:

void GetStrObjId(long ObjId, CString & strObjId)
{
	
	div_t   res = div( ObjId, 100000000);
	long ss = res.rem;
	long mm = res.quot + 100;

	wchar_t id[100];
	swprintf(id, OLESTR("id-%04lx-%08lx"), mm, ss);
	strObjId = id;
};


Thanks,
Endre




On Wed, 24 Aug 2005 10:49:31 -0500, Attila Vizhanyo  
<viza at isis.vanderbilt.edu> wrote:

> Hi Endre,
>
> Jason needs to extract GME Object IDs (those IDs that uniquely identify
> objects in MGA) using Udm.
> Is there any way to do this? I could be wrong, but I thought that Udm
> unique IDs correspond to Object IDs when using the MGA backend. But
> unique IDs are not guaranteed to be persistent, right?
> I could not decipher this information from the source code or the
> documentation.
>
> Thanks,
> Attila