Natural language names
 | Merkmal mit Listenwert |
 | Property List Value |
 | Propriété à liste de valeurs |
| Merkmal mit Listenwert |
| Property List Value |
| Propriété à liste de valeurs |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcPropertyListValue | ||||
| ListValues | MODIFIED | Instantiation changed to OPTIONAL. | IFC4 to IFC4 ADD1 | |
| IfcPropertyListValue | ||||
| HasConstraints | ADDED | |||
| HasApprovals | ADDED |
An IfcPropertyListValue defines a property that has several (numeric or descriptive) values assigned, these values are given by an ordered list. It defines a property - list value combination for which the property Name, an optional Description, the optional ListValues with measure type and optionally an Unit is given. An IfcPropertyListValue is a list of values. The order in which values appear is significant. All list members shall be of the same type.
The unit is handled by the Unit attribute, see Table 112 for an example of a list property:
NOTE An IfcPropertyListValue may be exchanged with no values assigned yet. In this case the ListValues are set to NIL.
Name ListValues Type
(through IfcValue)Unit ApplicableSizes 1200 IfcPositiveLengthMeasure - - 1600 IfcPositiveLengthMeasure - - 2400 IfcPositiveLengthMeasure - Table 112 — List property with values, measure types and units
HISTORY New entity in IFC2x2.
IFC4 CHANGE Attribute ListValues has been made OPTIONAL with upward compatibility for file based exchange.
| # | Attribute | Type | Cardinality | Description | B |
|---|---|---|---|---|---|
| 3 | ListValues | IfcValue | L[1:?] | List of property values. | X |
| 4 | Unit | IfcUnit | [0:1] | Unit for the list values, if not given, the default value for the measure type (given by the TYPE of nominal value) is used as defined by the global unit assignment at IfcProject. | X |
| Rule | Description |
|---|---|
| WR31 | All values within the list of values shall be of the same measure type. |
| # | Attribute | Type | Cardinality | Description | B |
|---|---|---|---|---|---|
| IfcPropertyAbstraction | |||||
| IfcProperty | |||||
| 1 | Name | IfcIdentifier | [1:1] | Name for this property. This label is the significant name string that defines the semantic meaning for the property. | X |
| 2 | Description | IfcText | [0:1] | Informative text to explain the property. | X |
| PartOfPset | IfcPropertySet @HasProperties | S[0:?] | Reference to the IfcPropertySet by which the IfcProperty is referenced. | ||
| PartOfComplex | IfcComplexProperty @HasProperties | S[0:?] | Reference to the IfcComplexProperty in which the IfcProperty is contained. | ||
| IfcSimpleProperty | |||||
| IfcPropertyListValue | |||||
| 3 | ListValues | IfcValue | L[1:?] | List of property values. | X |
| 4 | Unit | IfcUnit | [0:1] | Unit for the list values, if not given, the default value for the measure type (given by the TYPE of nominal value) is used as defined by the global unit assignment at IfcProject. | X |
<xs:element name="IfcPropertyListValue" type="ifc:IfcPropertyListValue" substitutionGroup="ifc:IfcSimpleProperty" nillable="true"/>
<xs:complexType name="IfcPropertyListValue">
<xs:complexContent>
<xs:extension base="ifc:IfcSimpleProperty">
<xs:sequence>
<xs:element name="ListValues" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcValue" maxOccurs="unbounded"/>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcValue"/>
<xs:attribute ref="ifc:cType" fixed="list"/>
<xs:attribute ref="ifc:arraySize" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="Unit" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcUnit"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcPropertyListValue
SUBTYPE OF (IfcSimpleProperty);
ListValues : OPTIONAL LIST [1:?] OF IfcValue;
Unit : OPTIONAL IfcUnit;
WHERE
WR31 : SIZEOF(QUERY(temp <* SELF.ListValues |
NOT(TYPEOF(SELF.ListValues[1]) = TYPEOF(temp))
)) = 0;
END_ENTITY;
EXPRESS-G diagram
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