 | Einfaches Merkmal - Vorlage |
 | Simple Property Template |
 | Modèle de propriété simple |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 4.0.0.0 |
|---|---|---|---|---|
| IfcSimplePropertyTemplate | ADDED | IFC2x3 to IFC4 4.0.0.0 | ||
| IfcSimplePropertyTemplate | ADDED |
The IfcSimplePropertyTemplate defines the template for all dynamically extensible properties, either the subtypes of IfcSimpleProperty, or the subtypes of IfcPhysicalSimpleQuantity. The individual property templates are interpreted according to their Name attribute and may have a predefined template type, property units, and property measure types. The correct interpretation of the attributes:
is determined by the TemplateType. The attributes Enumerators and Expression only apply to instances of IfcSimplePropertyTemplate having a particular TemplateType. The TemplateType also controls, which subtype of either IfcSimpleProperty or IfcPhysicalSimpleQuantity shall be used for property occurrences corresponding to this template.
The IfcSimplePropertyTemplate is part of the set of templates included in the IfcPropertySetTemplate. The template can be accessed throught the inverse attribute PartOfPsetTemplate The IfcPropertySetTemplate may define one or several instances of IfcPropertySet (or IfcElementQuantity). The definition assignment is established by the objectified relationship IfcRelDefinesByTemplate as shown in Figure 138. There is no direct link between an IfcSimplePropertyTemplate and a subtype of either IfcSimpleProperty or IfcPhysicalSimpleQuantity. The definition relationship between the template and the individual properties (or quantities) is established by the Name attributes.
NOTE Constraints at IfcPropertySetTemplate and IfcPropertySet (and IfcElementQuantity) guarantee that the Name attributes of included property templates and individual properties are unique.
 |
Figure 138 — Property template relationships |
HISTORY New entity in IFC4.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 5 | TemplateType | IfcSimplePropertyTemplateTypeEnum | ? |
Property type defining whether the property template defines a property with a single value, a bounded value, a list value, a table value, an enumerated value, or a reference value. Or the quantity type defining whether the template defines a quantity with a length, area, volume, weight or time value.
NOTE the value of this property determines the correct use of the PrimaryUnit, SecondaryUnit, PrimaryDataType, SecondaryDataType, and Expression attributes. | X |
| 6 | PrimaryMeasureType | IfcLabel | ? |
Primary measure type assigned to the definition of the property. It should be provided, if the PropertyType is set to:
NOTE The value range of the measure type is within the select type IfcValue for all PropertyType's with the exeption of P_REFERENCEVALUE. Here it is within the select type IfcObjectReferenceSelect. | X |
| 7 | SecondaryMeasureType | IfcLabel | ? |
Secondary measure type assigned to the definition of the property. It should be provided, if the PropertyType is set to:
NOTE The measure type of IfcPropertyEnumeration.EnumerationValues is provided as PrimaryDataType. | X |
| 8 | Enumerators | IfcPropertyEnumeration | ? |
Name of the property enumeration, and list of all valid enumerators being selectable values, assigned to the definition of the property.
This attribute shall only be provided, if the PropertyType is set to:
| X |
| 9 | PrimaryUnit | IfcUnit | ? |
Primary unit assigned to the definition of the property. It should be provided, if the PropertyType is set to:
| X |
| 10 | SecondaryUnit | IfcUnit | ? |
Secondary unit assigned to the definition of the property. It should be provided, if the PropertyType is set to:
| X |
| 11 | Expression | IfcLabel | ? |
The expression used to store additional information for the property template depending on the PropertyType. It should the following definitions, if the PropertyType is set to:
NOTE No value shall be asserted if the PropertyType is not listed above. | X |
| 12 | AccessState | IfcStateEnum | ? |
Information about the access state of the property. It determines whether a property be viewed and/or modified by any receiving application without specific knowledge of it.
Attribute use definition for IfcStateEnum* READWRITE: Properties of this template are readable and writable. They may be viewed and modified by users of any application. These are typical informational properties set by a user.
| X |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE only the last modification in stored - either as addition, deletion or modification. IFC4 CHANGE The attribute has been changed to be OPTIONAL. | X |
| 3 | Name | IfcLabel | ? | Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. | X |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcPropertyDefinition | |||||
| HasContext | IfcRelDeclares @RelatedDefinitions | S[0:1] | X | ||
| HasAssociations | IfcRelAssociates @RelatedObjects | S[0:?] | Reference to the relationship IfcRelAssociates and thus to those externally defined concepts, like classifications, documents, or library information, which are associated to the property definition. | X | |
| IfcPropertyTemplateDefinition | |||||
| IfcPropertyTemplate | |||||
| PartOfComplexTemplate | IfcComplexPropertyTemplate @HasPropertyTemplates | S[0:?] | Reference to a complex property templates. It should only be provided, if the PropertyType of the referenced complex property template is set to COMPLEX. | X | |
| PartOfPsetTemplate | IfcPropertySetTemplate @HasPropertyTemplates | S[0:?] | Reference to the IfcPropertySetTemplate that defines the scope for the IfcPropertyTemplate. A single IfcPropertyTemplate can be defined within the scope of zero, one or many IfcPropertySetTemplate'. | X | |
| IfcSimplePropertyTemplate | |||||
| 5 | TemplateType | IfcSimplePropertyTemplateTypeEnum | ? |
Property type defining whether the property template defines a property with a single value, a bounded value, a list value, a table value, an enumerated value, or a reference value. Or the quantity type defining whether the template defines a quantity with a length, area, volume, weight or time value.
NOTE the value of this property determines the correct use of the PrimaryUnit, SecondaryUnit, PrimaryDataType, SecondaryDataType, and Expression attributes. | X |
| 6 | PrimaryMeasureType | IfcLabel | ? |
Primary measure type assigned to the definition of the property. It should be provided, if the PropertyType is set to:
NOTE The value range of the measure type is within the select type IfcValue for all PropertyType's with the exeption of P_REFERENCEVALUE. Here it is within the select type IfcObjectReferenceSelect. | X |
| 7 | SecondaryMeasureType | IfcLabel | ? |
Secondary measure type assigned to the definition of the property. It should be provided, if the PropertyType is set to:
NOTE The measure type of IfcPropertyEnumeration.EnumerationValues is provided as PrimaryDataType. | X |
| 8 | Enumerators | IfcPropertyEnumeration | ? |
Name of the property enumeration, and list of all valid enumerators being selectable values, assigned to the definition of the property.
This attribute shall only be provided, if the PropertyType is set to:
| X |
| 9 | PrimaryUnit | IfcUnit | ? |
Primary unit assigned to the definition of the property. It should be provided, if the PropertyType is set to:
| X |
| 10 | SecondaryUnit | IfcUnit | ? |
Secondary unit assigned to the definition of the property. It should be provided, if the PropertyType is set to:
| X |
| 11 | Expression | IfcLabel | ? |
The expression used to store additional information for the property template depending on the PropertyType. It should the following definitions, if the PropertyType is set to:
NOTE No value shall be asserted if the PropertyType is not listed above. | X |
| 12 | AccessState | IfcStateEnum | ? |
Information about the access state of the property. It determines whether a property be viewed and/or modified by any receiving application without specific knowledge of it.
Attribute use definition for IfcStateEnum* READWRITE: Properties of this template are readable and writable. They may be viewed and modified by users of any application. These are typical informational properties set by a user.
| X |
| # | Concept | Template | Model View |
|---|---|---|---|
| IfcRoot | |||
| Identity | Software Identity | General Usage | |
| Revision Control | Revision Control | General Usage | |
<xs:element name="IfcSimplePropertyTemplate" type="ifc:IfcSimplePropertyTemplate" substitutionGroup="ifc:IfcPropertyTemplate" nillable="true"/>
<xs:complexType name="IfcSimplePropertyTemplate">
<xs:complexContent>
<xs:extension base="ifc:IfcPropertyTemplate">
<xs:sequence>
<xs:element name="Enumerators" type="ifc:IfcPropertyEnumeration" nillable="true" minOccurs="0"/>
<xs:element name="PrimaryUnit" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcUnit"/>
</xs:complexType>
</xs:element>
<xs:element name="SecondaryUnit" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcUnit"/>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="TemplateType" type="ifc:IfcSimplePropertyTemplateTypeEnum" use="optional"/>
<xs:attribute name="PrimaryMeasureType" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="SecondaryMeasureType" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="Expression" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="AccessState" type="ifc:IfcStateEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcSimplePropertyTemplate
SUBTYPE OF (IfcPropertyTemplate);
TemplateType : OPTIONAL IfcSimplePropertyTemplateTypeEnum;
PrimaryMeasureType : OPTIONAL IfcLabel;
SecondaryMeasureType : OPTIONAL IfcLabel;
Enumerators : OPTIONAL IfcPropertyEnumeration;
PrimaryUnit : OPTIONAL IfcUnit;
SecondaryUnit : OPTIONAL IfcUnit;
Expression : OPTIONAL IfcLabel;
AccessState : OPTIONAL IfcStateEnum;
END_ENTITY;
EXPRESS-G diagram
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