edmiRemoteIsSubtypeOf

EdmiError edmiRemoteIsSubtypeOf(SdaiServerContext serverContextId,
                                  SdaiEntity        subtypeEntityId,
                                  SdaiEntity        supertypeEntityId,
                                  SdaiBoolean       *isSubtypeOf,
                                  SdaiInvocationId  *edmiInvocationId);

Determines whether a specified instance type is a subtype of another specified instance type. This operation will return sdaiTRUE if the instance type specified by the <subtypeEntity> argument is the same or a subtype of the instance type specified by the <supertypeEntity> argument, else sdaiFALSE will be returned.

Arguments

Type	Name	Comment
SdaiServerContext	serverContextId	Context identification, from edmiDefineServerContext
SdaiEntity	subtypeEntityId	The numeric entityID that uniquely identifies the assumed entity subtype within the the remote EDMdatabase
SdaiEntity	supertypeEntityId	The numeric entityID that uniquely identifies the assumed entity supertype within the the remote EDMdatabase
SdaiBoolean	isSubtypeOf	A variable that will receive sdaiTRUE if the entity <subtypeEntityId> is a subtype of the entity <supertypeEntityId>.
SdaiInvocationId	edmiInvocationId	Currently not used.

Return Value

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Options

Example

 /*
 SCHEMA Relations 
 ENTITY Person; 
 PID : INTEGER; 
 Name : STRING; 
 END_ENTITY; 
  
 ENTITY Man SUBTYPE OF Person; 
 . . . 
 HasBeard : BOOLEAN; 
 . . . 
 END_ENTITY; 
  
 ENTITY Woman SUBTYPE OF Person; 
 . . . 
 HasGivenBirth : BOOLEAN; 
 . . . 
 END_ENTITY; 
 END_SCHEMA; 
 */
 EdmiError rstat;
 SdaiInteger nWrn, nErr;
 SdaiServerContext myContext;
 SdaiEntity manEID, personEID;
 SdaiBoolean isSubType;
 SdaiModel modelId;
  
 /* Define Remote Server Context */
 rstat = edmiDefineServerContext("MyRemoteServerContext",
 "Johnny", "Supervisor", "cf37ftr", 
 "TCP", "9090", "MyServerHost", 
 NULL, NULL, NULL, NULL, NULL, &myContext); 
  
 /* Compile the schema */
 rstat = edmiRemoteDefineSchema(myContext, EXPRESS_SCHEMA_TYPE,
 "c:/data/Relations.exp", "c:/tmp/Relations.dia",  
 "Relations", 0, &nWrn, &nErr, NULL); 
  
 /* Create the MyRelations model */
 rstat = edmiRemoteCreateModel(myContext, "JohnnysRepository",
 "MyRelations", "Relations", 0, NULL); 
  
 /* Get the model Id */
 rstat = edmiRemoteGetModelBN(myContext, "JohnnysRepository",
 "MyRelations", &modelId, NULL); 
  
 /* Get Man entity Id */
 rstat = edmiRemoteGetEntity(myContext, modelId,
 "Man", &manEID, NULL);
  
 /* Get Person entity Id */
 rstat = edmiRemoteGetEntity(myContext, modelId,
 "Person", &personEID, NULL);
  
 /* Is man subtype of person? */
 rstat = edmiRemoteIsSubtypeOf(myContext,
 manEID, personEID, &isSubType, NULL); 
  
 printf("\nMan is%s subtype of person",
 isSubType ? "" : "n't"); 
 . . .

EDMsix

edmiRemoteIsSubtypeOf

Arguments

Return Value

Options

Example

See also

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