edmiRemoteUnsetAttrs

EdmiError edmiRemoteUnsetAttrs(SdaiServerContext serverContextId,
                                SdaiInstance      instanceId, 
                                SdaiInteger       attributes, 
                                SdaiAttr          attributeIds[], 
                                SdaiInvocationId  *edmiInvocationId);;

Unsets one ore more attributes, identified by their attributeIds, of a specified instance, identified by its instanceId. The attributeIds are specified in the input buffer argument <attributeIds>. This operation is only applicable on the explicit attributes of application instances.

Arguments

Type	Name	Comment
SdaiServerContext	serverContextId	Context identification, from edmiDefineServerContext
SdaiInstance	instanceId	A numeric instanceID that uniquely identifies the instance of interest in the remote EDMdatabase
SdaiInteger	attributes	The number of attribute names in the <attributeIds> argument.
SdaiAttr	attributeIds[]	A buffer containing the attributeIds of all the attributes to be unset.
SdaiInvocationId	edmiInvocationId	Currently not used.

Return Value

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Options

Example

EdmiError rstat;
 SdaiServerContext myContext;
 SdaiInteger index, nHits;
 SdaiQueryResult qexRes;
 char condition[1024], *pCond;
 SdaiOptions options;
  
 /* Create Server Context */
 rstat = edmiDefineServerContext("MyContext",
 "Johnny", "Supervisor", "cf37ftr", 
 "TCP", "9090", "MyServerHost", 
 NULL, NULL, NULL, NULL, NULL, &myContext); 
  
 /* Get Johnnys instance Id */
 nHits = 2;
 index = 0;
 options = ONLY_INSTANCE_IDS | SUBTYPES;
 pCond = &condition[0];
 pCond += sprintf(pCond, "(LAST_NAME = 'Jackson')");
 pCond += sprintf(pCond, " AND (FIRST_NAME = 'Johnny')");
 pCond += sprintf(pCond, " AND (BIRTH_DATE = '19631216)')");
 rstat = edmiRemoteSelectInstances(myContext, "DataRepository",
 "SocialRelations", "Person", condition, options, 
 NULL, NULL, NULL, &index, &nHits, &qexRes, 
 NULL, NULL, NULL, NULL); 
 if (nHits != 1) {
 printf("\n%s", nHits ? "Ambigious" : "Not found"); 
 } else { 
 SdaiInstance _johnnysId = qexRes->instanceIds[0]; 
 SdaiAttr _attrIds[2]; 
 SdaiEntity _manEID; 
 SdaiModel _modelId; 
  
 /* Johnny was recently divorced.  
 His wife left him in his car. */ 
  
 /* Get the model Id */ 
 rstat = edmiRemoteGetModelBN(myContext, "DataRepository",  
 "SocialRelations", &_modelId, NULL); 
  
 /* Get Man entity Id */ 
 rstat = edmiRemoteGetEntity(myContext, _modelId,  
 "Man", &_manEID, NULL);
  
 /* Get Man.Wife attribute Id */
 rstat = edmiRemoteGetAttrDefinitionBN(myContext,  
 "SocialRelations", "Man", "Wife", 
 &_attrIds[0], NULL); 
  
 /* Get Man.Car attribute Id */ 
 rstat = edmiRemoteGetAttrDefinitionBN(myContext,  
 "SocialRelations", "Man", "Car", 
 &_attrIds[1], NULL); 
  
 /* Unset Johnnys Wife and Car attributes */ 
 rstat = edmiRemoteUnsetAttrs(myContext,  
 _johnnysId, 2, _attrIds, NULL); 
 }
 edmiFreeQueryResult(qexRes);
 . . .

EDMsix

edmiRemoteUnsetAttrs

Arguments

Return Value

Options

Example

See also

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