xpxGetEntityExtent
FUNCTION xpxGetEntityExtent (modelId , entityId , VAR extentId : SET OF GENERIC) status : INTEGER;
The xpxGetEntityExtent function returns the aggregateId of the specified entity_extent aggregate. The actual instance type is defined by the modelId and entityId arguments. The aggregateId of the actual entity_extent is returned in the extentId argument. An entity_extent aggregate is a SET that contains all instances of the same type in a model. The number of entity_extents in a model is equal to the number of possible instance types in the model.
Arguments
Type | Name | Comment |
 SET OF GENERIC | modelId | Id of the model |
 SET OF GENERIC | entityId | Id of the entoty |
 SET OF GENERIC | extentId |  |
Return Value
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Options
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Example
FUNCTION getEntityExtent(modelId,entityId : GENERIC) : GENERIC; LOCAL extentId : GENERIC; members : INTEGER; END_LOCAL; ON_ERROR_DO; xpxPrintf('\nError.'); xpxThrow; END_ON_ERROR_DO; xpxGetEntityExtent(modelId,entityId,extentId); members := xpfGetMemberCount(extentId); xpxPrintf('\n%d Members of type %s in model.',members,entityId.name); RETURN(extentId); END_FUNCTION;
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