EdmiError edmiRemoteDeleteInstance(SdaiServerContext serverContextId,
                                     SdaiAppInstance   instance, 
                                     SdaiOptions       options, 
                                     SdaiInvocationId  *edmiInvocationId);

Deletes an application instance from the remote EDMdatabase. Any data, included aggregates, owned by the actual instance will be deleted. An instance may not normally be deleted if it is externally referenced from one or more instances. Any external references to the instance must be deleted before this operation can be successfully performed. The function edmiRemoteDeleteInstanceReferences can be used to delete all the external references to an instance, or the references can be deleted one by one by the appropriate operations. This operation is applicable only to application instances. The instanceID of the deleted instance will not be reused before the edmModel that contained the instance is deleted.

Arguments

Type	Name	Comment
SdaiServerContext	serverContextId	Context identification, from edmiDefineServerContext
SdaiAppInstance	instance	The numeric instanceID that uniquely identifies the instance in the remote EDMdatabase
SdaiOptions	options	See description of available options below.
SdaiInvocationId	edmiInvocationId	Currently not used.

Return Value

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Options

Option	Comment
DELETE_INSTANCE_REFERENCES	All instances that are referenced from the instance to be deleted will be deleted as well. This option makes the operation deep.

Example

 EdmiError rstat;
 SdaiServerContext myContext;
 SdaiInteger index, nHits;
 SdaiQueryResult qexRes;
 SdaiInstance personId;
  
 /* Create Server Context */
 rstat = edmiDefineServerContext("MyContext",
 "Johnny", "Supervisor", "cf37ftr", 
 "TCP", "9090", "MyServerHost", 
 NULL, NULL, NULL, NULL, NULL, &myContext); 
  
 /* Get a persons instance Id from a unique
 primary key attribute 'PID' */ 
 nHits = 1;
 index = 0;
 rstat = edmiRemoteSelectInstances(myContext,
 "DataRepository", "SocialRelations", 
 "Person", "PID = '16126353127'", 
 (ONLY_INSTANCE_IDS | SUBTYPES), 
 NULL, NULL, NULL,  
 &index, &nHits, &qexRes, 
 NULL, NULL, NULL, NULL); 
 if (!nHits) {
 printf("\nRequested pid not found."); 
 goto err; 
 }
 personId = qexRes->instanceIds[0];
  
 /* Delete all references to personId */
 rstat = edmiRemoteDeleteInstanceReferences(myContext, personId, NULL);
  
 /* Delete the instance it self */
 rstat = edmiRemoteDeleteInstance(myContext, personId, 0, NULL);
 . . .

See also

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