IfcValue

Semantic definitions at the type

Type definition

IfcValue is a select type for selecting between more specialised select types IfcSimpleValue, IfcMeasureValue and IfcDerivedMeasureValue.

SELECT

IfcSimpleValue A select type for basic defined types of simple data type.
IfcMeasureValue A select type for basic measure types of ISO 10303-41.
IfcDerivedMeasureValue A select type for derived measure types.

HISTORY New type in IFC2x.

Select definition

Type	Description
IfcMeasureValue
IfcSimpleValue
IfcDerivedMeasureValue

Formal representations

XSD Specification

 <xs:group name="IfcValue">

  <xs:choice>

   <xs:element ref="ifc:IfcAreaMeasure-wrapper"/>

   <xs:element ref="ifc:IfcBoolean-wrapper"/>

   <xs:element ref="ifc:IfcCompoundPlaneAngleMeasure-wrapper"/>

   <xs:element ref="ifc:IfcCountMeasure-wrapper"/>

   <xs:element ref="ifc:IfcDateTime-wrapper"/>

   <xs:element ref="ifc:IfcDuration-wrapper"/>

   <xs:element ref="ifc:IfcDynamicViscosityMeasure-wrapper"/>

   <xs:element ref="ifc:IfcIdentifier-wrapper"/>

   <xs:element ref="ifc:IfcInteger-wrapper"/>

   <xs:element ref="ifc:IfcLabel-wrapper"/>

   <xs:element ref="ifc:IfcLengthMeasure-wrapper"/>

   <xs:element ref="ifc:IfcLinearStiffnessMeasure-wrapper"/>

   <xs:element ref="ifc:IfcLogical-wrapper"/>

   <xs:element ref="ifc:IfcMassDensityMeasure-wrapper"/>

   <xs:element ref="ifc:IfcMassMeasure-wrapper"/>

   <xs:element ref="ifc:IfcMassPerLengthMeasure-wrapper"/>

   <xs:element ref="ifc:IfcModulusOfElasticityMeasure-wrapper"/>

   <xs:element ref="ifc:IfcMolecularWeightMeasure-wrapper"/>

   <xs:element ref="ifc:IfcMomentOfInertiaMeasure-wrapper"/>

   <xs:element ref="ifc:IfcNonNegativeLengthMeasure-wrapper"/>

   <xs:element ref="ifc:IfcNormalisedRatioMeasure-wrapper"/>

   <xs:element ref="ifc:IfcParameterValue-wrapper"/>

   <xs:element ref="ifc:IfcPlaneAngleMeasure-wrapper"/>

   <xs:element ref="ifc:IfcPositiveInteger-wrapper"/>

   <xs:element ref="ifc:IfcPositiveLengthMeasure-wrapper"/>

   <xs:element ref="ifc:IfcPositiveRatioMeasure-wrapper"/>

   <xs:element ref="ifc:IfcPressureMeasure-wrapper"/>

   <xs:element ref="ifc:IfcRatioMeasure-wrapper"/>

   <xs:element ref="ifc:IfcReal-wrapper"/>

   <xs:element ref="ifc:IfcRotationalStiffnessMeasure-wrapper"/>

   <xs:element ref="ifc:IfcSectionModulusMeasure-wrapper"/>

   <xs:element ref="ifc:IfcText-wrapper"/>

   <xs:element ref="ifc:IfcThermalExpansionCoefficientMeasure-wrapper"/>

   <xs:element ref="ifc:IfcTimeMeasure-wrapper"/>

   <xs:element ref="ifc:IfcTimeStamp-wrapper"/>

   <xs:element ref="ifc:IfcVolumeMeasure-wrapper"/>

   <xs:element ref="ifc:IfcWarpingConstantMeasure-wrapper"/>

  </xs:choice>

 </xs:group>

EXPRESS Specification


TYPE IfcValue = SELECT (

 IfcMeasureValue, 
 IfcSimpleValue, 
 IfcDerivedMeasureValue);
END_TYPE;


 EXPRESS-G diagram

	Wert
	Value
	Valeur