API Tasks › Accessing Metamodel Information

Accessing Metamodel Information

You can obtain the metamodel of CA ERwin DM by using the API. The metamodel can be accessed in the same manner as a CA ERwin DM model. As in the case with model data, the ISCPersistenceUnit or ISCModelSet pointer in an ISCSession::Open call indicates the model set with which you are working.

There is a special case for the intrinsic metamodel. To obtain the intrinsic metamodel for a specific class of metadata, you can use the Property Bag component created with the PropertyBag method of the ISCApplicationEnvironment interface. A Property Bag instance populated with EMX_Metadata_Class or EM2_Metadata_Class properties from the Application category indicates the type of the intrinsic metamodel to access. The instance must be submitted as the first parameter in an ISCSession::Open call, instead of ISCPersistenceUnit or ISCModelSet pointers. If the first parameter in an ISCSession::Open call is NULL, then the intrinsic metamodel for the top model set in a persistence unit, the EMX class metadata, will be accessed.

To indicate that a session will access metamodel information, you set the Level parameter of the Open method to SCD_SL_M1.