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FUNCTION xpxGetEntityExtent (modelId , entityId , VAR extentId : SET OF GENERIC)
status : INTEGER;
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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.
This function is equivalent to the EDMinterface function sdaiGetEntityExtent
Arguments
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| 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
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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; |
See also
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