 |
Home | Features | Reference | Downloads | About |
Reference/es_mbd_getclassbyid
Syntax
int es_mbd_getclassbyid( struct es_mbd *def, unsigned classid, struct es_mbc **res );
Arguments
struct es_mbd *def |
Database definition. |
|---|---|
unsigned classid |
Class integer identifier. |
struct es_mbc **res |
Assigned result. Passed by reference. |
Return Codes
ES_ERROR_NONE |
Success. No errors. |
|---|---|
ES_ERROR_UNKNOWNCLASS |
No class exists that corresponds to the class integer identifier classid. |
Description
Retrieves the class from the definition def, corresponding to the class integer identifier classid.
Each class is assigned an integer identifier known as a class-id. Classids fall in the range 0..N-1, where N is the total number of classes in a database. es_mbd_getnumclasses() returns N.
es_mbc_getclassid() returns the classid given a class definition object.