edmiRemoteUnsetAttrs

 
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.
Related function: edmiRemoteUnsetAttrsBN
Header:
#include "sdai.h"
Prototype:
EdmiError edmiRemoteUnsetAttrs(SdaiServerContext serverContextId,
                                SdaiInstance      instanceId, 
                                SdaiInteger       attributes, 
                                SdaiAttr          attributeIds[], 
                                SdaiInvocationId  *edmiInvocationId);
 
Arguments:

Returns:
A completion code of datatype EdmiError is the returned function value. The completion code has the following values:
Completion code = 0 : Operation successfully performed.
Completion code != 0: Error in operation. Completion code is an _EDMinterface^_ error code. Use edmiGetErrorText to get the error text corresponding to the error code.
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);
. . .