edmiValueUnique

EdmiError edmiValueUnique(SdaiAggr    aggr,
                           SdaiLogical *result);

Implements the Express built in function Value_Unique as defined in section 15.29 Value_unique – uniqueness function; in ISO 10303-11:1994(E) : The EXPRESS Language Reference Manual. The Value_Unique function returns a SdaiLogical value depending on whether or not the elements in the specified <aggr> are value unique or not. This operation uses value comparison (deep comparison).This operation is only applicable on data models. The actual data model must be open before this operation can be successfully performed.

Arguments

Type

Name

Comment

SdaiAggr

aggr

A numeric aggregateID that uniquely identifies the aggregate of interest in the EDMdatabase. The aggregateID is returned when the aggregate is created or it can be retrieved with an EDMinterface get operation.

SdaiLogical

result

Address of a SdaiLogical variable that will receive the result of the Value_Unique operation. The returned result is as follows:

sdaiTRUE: elements in <aggr> are value unique
sdaiFALSE: elements in <aggr> are not value unique
sdaiUNKNOWN: Unpredictable result due to unset values or error in operation. Use sdaiErrorQuery to check for error in operation.

Return Value

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Options

Example

EdmiError rstat;
 SdaiAggr aggr;
 SdaiLogical result;
 . . .
 if (rstat = edmiValueUnique (aggr, &result)) {
 /* Error in operation */ 
 printf("\nError: %s in edmiValueUnique \n", 
 edmiGetErrorText(rstat)); 
 goto error; 
 }
 switch (result) {
 case sdaiTRUE: 
 . . . /* Aggregate elements are value unique */ 
 break; 
 case sdaiFALSE: 
 . . . /* Aggregate elements are not value unique */ 
 break; 
 default: 
 . . . /* Unpredictable result */ 
 break; 
 }
 . . .

EDMsix

edmiValueUnique

Arguments

Return Value

Options

Example

See also

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