Natural language names
 | Weist Prozess zu - Relation |
 | Rel Assigns To Process |
 | Assignation à processus |
| Weist Prozess zu - Relation |
| Rel Assigns To Process |
| Assignation à processus |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcRelAssignsToProcess | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. | ||
| RelatingProcess | MODIFIED | Type changed from IfcProcess to IfcProcessSelect. |
The objectified relationship IfcRelAssignsToProcess handles the assignment of one or many objects to a process or activity. An object can be a product that is the item the process operates on. Processes and activities can operate on things other than products, and can operate in ways other than input and output.
EXAMPLE It may be common to define processes during estimating or scheduling that describe design tasks (resulting in documents), procurement tasks (resulting in construction materials), planning tasks (resulting in processes), etc. Furthermore, the ways in which process can operate on something might include "installs", "finishes", "transports", "removes", etc. The ways are described as operation types.
The inherited attribute RelatedObjects gives the references to the objects, or object type, which the process operates on. The RelatingProcess is the process or process type, that operates on the object. The operation types are captured in the inherited attribute Name.
NOTE The agreement on valid and recognizable values for the Name attribute is part of view definitions and implementer agreements.
HISTORY New entity in IFC1.5. Has been renamed from IfcRelProcessOperatesOn in IFC2x.
IFC4 CHANGE The data type RelatingProcess has been extended to cover also IfcTypeProcess
| # | Attribute | Type | Cardinality | Description | C |
|---|---|---|---|---|---|
| 7 | RelatingProcess | IfcProcessSelect | [1:1] | Reference to the process to which the objects are assigned to. | X |
| 8 | QuantityInProcess | IfcMeasureWithUnit | [0:1] | Quantity of the object specific for the operation by this process. | X |
| Rule | Description |
|---|---|
| NoSelfReference | The instance to with the relation points as provided by RelatingProcess shall not be contained in the set of RelatedObjects. |
| # | Attribute | Type | Cardinality | Description | C |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | [1:1] | Assignment of a globally unique identifier within the entire software world. | X |
| 2 | OwnerHistory | IfcOwnerHistory | [0:1] |
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. | X |
| 3 | Name | IfcLabel | [0:1] | 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 | [0:1] | Optional description, provided for exchanging informative comments. | X |
| IfcRelationship | |||||
| IfcRelAssigns | |||||
| 5 | RelatedObjects | IfcObjectDefinition | S[1:?] | Related objects, which are assigned to a single object. The type of the single (or relating) object is defined in the subtypes of IfcRelAssigns. | X |
| 6 | RelatedObjectsType | IfcObjectTypeEnum | [0:1] | Particular type of the assignment relationship. It can constrain the applicable object types, used within the role of RelatedObjects. | X |
| IfcRelAssignsToProcess | |||||
| 7 | RelatingProcess | IfcProcessSelect | [1:1] | Reference to the process to which the objects are assigned to. | X |
| 8 | QuantityInProcess | IfcMeasureWithUnit | [0:1] | Quantity of the object specific for the operation by this process. | X |
| # | Concept | Model View |
|---|---|---|
| IfcRoot | ||
| Software Identity | Common Use Definitions | |
| Revision Control | Common Use Definitions | |
<xs:element name="IfcRelAssignsToProcess" type="ifc:IfcRelAssignsToProcess" substitutionGroup="ifc:IfcRelAssigns" nillable="true"/>
<xs:complexType name="IfcRelAssignsToProcess">
<xs:complexContent>
<xs:extension base="ifc:IfcRelAssigns">
<xs:sequence>
<xs:element name="RelatingProcess">
<xs:complexType>
<xs:group ref="ifc:IfcProcessSelect"/>
</xs:complexType>
</xs:element>
<xs:element name="QuantityInProcess" type="ifc:IfcMeasureWithUnit" nillable="true" minOccurs="0"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcRelAssignsToProcess
SUBTYPE OF (IfcRelAssigns);
RelatingProcess : IfcProcessSelect;
QuantityInProcess : OPTIONAL IfcMeasureWithUnit;
WHERE
NoSelfReference : SIZEOF(QUERY(Temp <* SELF\IfcRelAssigns.RelatedObjects | RelatingProcess :=: Temp)) = 0;
END_ENTITY;
EXPRESS-G diagram
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