8.2.3.1 IfcApproval

An IfcApproval represents information about approval processes such as for a plan, a design, a proposal, or a change order in a construction or facilities management project. IfcApproval is referenced by IfcRelAssociatesApproval in IfcControlExtension schema, and thereby can be related to all subtypes of IfcRoot. An approval may also be given to resource objects using IfcResourceApprovalRelationship

New entity in IFC2.0 Attributes Identifier and Name made optional, where rule added to require at least one of them being asserted. Inverse attributes ApprovedObjects, ApprovedResources and HasExternalReferences added. Inverse attribute Properties deleted (more general relationship via inverse ApprovedResources to be used instead).

8.2.3.1.2 Entity inheritance

- IfcApproval

8.2.3.1.3 Attributes

#	Attribute	Type	Description
IfcApproval (14)
1	Identifier	OPTIONAL IfcIdentifier	A computer interpretable identifier by which the approval is known.
2	Name	OPTIONAL IfcLabel	A human readable name given to an approval.
3	Description	OPTIONAL IfcText	A general textual description of a design, work task, plan, etc. that is being approved for.
4	TimeOfApproval	OPTIONAL IfcDateTime	Date and time when the result of the approval process is produced. IFC4-CHANGE Attribute data type changed to IfcDateTime using ISO 8601 representation, renamed from ApprovalDateTime and made OPTIONAL.
5	Status	OPTIONAL IfcLabel	The result or current status of the approval, e.g. Requested, Processed, Approved, Not Approved.
6	Level	OPTIONAL IfcLabel	Level of the approval e.g. Draft v.s. Completed design.
7	Qualifier	OPTIONAL IfcText	Textual description of special constraints or conditions for the approval.
8	RequestingApproval	OPTIONAL IfcActorSelect	The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and requesting an approval. IFC4-CHANGE New attribute for approval request replacing IfcApprovalActorRelationship (being deleted).
9	GivingApproval	OPTIONAL IfcActorSelect	The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and giving an approval. IFC4-CHANGE New attribute for approval provision replacing IfcApprovalActorRelationship (being deleted).
	HasExternalReferences	SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects	Reference to external references, e.g. library, classification, or document information, that are associated to the Approval. IFC4-CHANGE New inverse attribute.
	ApprovedObjects	SET [0:?] OF IfcRelAssociatesApproval FOR RelatingApproval	Reference to the IfcRelAssociatesApproval instances associating this approval to objects (subtypes of IfcRoot
	ApprovedResources	SET [0:?] OF IfcResourceApprovalRelationship FOR RelatingApproval	The set of relationships by which resource objects that are are approved by this approval are known.
	IsRelatedWith	SET [0:?] OF IfcApprovalRelationship FOR RelatedApprovals	The set of relationships by which this approval is related to others.
	Relates	SET [0:?] OF IfcApprovalRelationship FOR RelatingApproval	The set of relationships by which other approvals are related to this one.

Table 8.2.3.1.A

8.2.3.1.4 Formal propositions

Name	Description
HasIdentifierOrName	Either Identifier or Name (or both) by which the approval is known shall be given.
`EXISTS (Identifier) OR EXISTS (Name)`

Table 8.2.3.1.B

8.2.3.1.5 Formal representation

ENTITY IfcApproval;
	Identifier : OPTIONAL IfcIdentifier;
	Name : OPTIONAL IfcLabel;
	Description : OPTIONAL IfcText;
	TimeOfApproval : OPTIONAL IfcDateTime;
	Status : OPTIONAL IfcLabel;
	Level : OPTIONAL IfcLabel;
	Qualifier : OPTIONAL IfcText;
	RequestingApproval : OPTIONAL IfcActorSelect;
	GivingApproval : OPTIONAL IfcActorSelect;
 INVERSE
	HasExternalReferences : SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
	ApprovedObjects : SET [0:?] OF IfcRelAssociatesApproval FOR RelatingApproval;
	ApprovedResources : SET [0:?] OF IfcResourceApprovalRelationship FOR RelatingApproval;
	IsRelatedWith : SET [0:?] OF IfcApprovalRelationship FOR RelatedApprovals;
	Relates : SET [0:?] OF IfcApprovalRelationship FOR RelatingApproval;
 WHERE
	HasIdentifierOrName : EXISTS (Identifier) OR EXISTS (Name);
END_ENTITY;

8.2.3.1.6 References

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8.2.3.1.7 Changelog

8.2.3.1.7.1 IFC4

attribute, GivingApproval
attribute, Identifier
attribute, RequestingApproval
inverse attribute, ApprovedResources
inverse attribute, IsRelatedWith
where rule, HasIdentifierOrName
attribute, ApprovalStatus
attribute ApprovalDateTime name, Changed from "ApprovalDateTime" to "Name"
attribute ApprovalDateTime optional, Changed from "False" to "True"
attribute ApprovalDateTime type, Changed from "IfcDateTimeSelect" to "IfcLabel"
attribute ApprovalLevel name, Changed from "ApprovalLevel" to "TimeOfApproval"
attribute ApprovalLevel type, Changed from "IfcLabel" to "IfcDateTime"
attribute ApprovalQualifier name, Changed from "ApprovalQualifier" to "Status"
attribute ApprovalQualifier type, Changed from "IfcText" to "IfcLabel"
attribute Identifier name, Changed from "Identifier" to "Qualifier"
attribute Identifier optional, Changed from "False" to "True"
attribute Identifier type, Changed from "IfcIdentifier" to "IfcText"
attribute Name name, Changed from "Name" to "Level"
attribute Name optional, Changed from "False" to "True"
inverse attribute Actors name, Changed from "Actors" to "HasExternalReferences"
inverse attribute Actors type, Changed from "SET OF [0:?] IfcApprovalActorRelationship FOR Approval" to "SET OF [0:?] IfcExternalReferenceRelationship FOR RelatedResourceObjects"
inverse attribute IsRelatedWith name, Changed from "IsRelatedWith" to "ApprovedObjects"
inverse attribute IsRelatedWith type, Changed from "SET OF [0:?] IfcApprovalRelationship FOR RelatedApproval" to "SET OF [0:?] IfcRelAssociatesApproval FOR RelatingApproval"