IfcDocumentInformation

IfcDocumentInformation

实体定义

IfcDocumentInformation捕获外部文档的“元数据”。本规范未定义文件的实际内容；相反，它可以在Location属性之后找到。

可以使用IfcDocumentReference从交换结构中全部或部分引用相同的IFCDocationInformation（例如，通过引用特定章节或段落）。使用IfcDocumentInformation的所有IFCDocationReference都可以通过反向关系HasDocumentReferences访问。

IFC2x中的新实体。

IFC4将属性HasDocumentReferences更改为反向，添加了属性位置，并修改了属性ElectronicFormat。

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcExternalInformation
IfcDocumentInformation
1	Identification	IfcIdentifier	[1:1]	Identifier that uniquely identifies a document.	X
2	Name	IfcLabel	[1:1]	File name or document name assigned by owner.	X
3	Description	IfcText	[0:1]	Description of document and its content.	X
4	Location	IfcURIReference	[0:1]	Resource identifier or locator, provided as URI, URN or URL, of the document information for online references.	X
5	Purpose	IfcText	[0:1]	Purpose for this document.	X
6	IntendedUse	IfcText	[0:1]	Intended use for this document.	X
7	Scope	IfcText	[0:1]	Scope for this document.	X
8	Revision	IfcLabel	[0:1]	Document revision designation.	X
9	DocumentOwner	IfcActorSelect	[0:1]	Information about the person and/or organization acknowledged as the 'owner' of this document. In some contexts, the document owner determines who has access to or editing right to the document.	X
10	Editors	IfcActorSelect	S[1:?]	The persons and/or organizations who have created this document or contributed to it.	X
11	CreationTime	IfcDateTime	[0:1]	Date and time stamp when the document was originally created.	X
12	LastRevisionTime	IfcDateTime	[0:1]	Date and time stamp when this document version was created.	X
13	ElectronicFormat	IfcIdentifier	[0:1]	Describes the media type used in various internet protocols, also referred to as "Content-type", or "MIME-type (Multipurpose Internet Mail Extension), of the document being referenced. It is composed of (at least) two parts, a type and a subtype. NOTE  The iana (Internet Assigned Numbers Authority) published the media types. EXAMPLE  'image/png' denotes an image type of png (Portable Network Graphics) subtype, 'application/pdf' denotes an application specific type of pdf (Portable Document Format) subtype	X
14	ValidFrom	IfcDate	[0:1]	Date when the document becomes valid.	X
15	ValidUntil	IfcDate	[0:1]	Date until which the document remains valid.	X
16	Confidentiality	IfcDocumentConfidentialityEnum	[0:1]	The level of confidentiality of the document.	X
17	Status	IfcDocumentStatusEnum	[0:1]	The current status of the document. Examples of status values that might be used for a document information status include: - DRAFT - FINAL DRAFT - FINAL - REVISION	X
	DocumentInfoForObjects	IfcRelAssociatesDocument @RelatingDocument	S[0:?]	The document information with which objects are associated.	X
	HasDocumentReferences	IfcDocumentReference @ReferencedDocument	S[0:?]	The document references to which the document applies	X
	IsPointedTo	IfcDocumentInformationRelationship @RelatedDocuments	S[0:?]	An inverse relationship from the IfcDocumentInformationRelationship to the related documents./EPM-HTML>	X
	IsPointer	IfcDocumentInformationRelationship @RelatingDocument	S[0:1]	An inverse relationship from the IfcDocumentInformationRelationship to the relating document.	X

 

EXPRESS Specification

ENTITY IfcDocumentInformation
 SUBTYPE OF (IfcExternalInformation);
  Identification : IfcIdentifier;
  Name : IfcLabel;
  Description : OPTIONAL IfcText;
  Location : OPTIONAL IfcURIReference;
  Purpose : OPTIONAL IfcText;
  IntendedUse : OPTIONAL IfcText;
  Scope : OPTIONAL IfcText;
  Revision : OPTIONAL IfcLabel;
  DocumentOwner : OPTIONAL IfcActorSelect;
  Editors : OPTIONAL SET [1:?] OF IfcActorSelect;
  CreationTime : OPTIONAL IfcDateTime;
  LastRevisionTime : OPTIONAL IfcDateTime;
  ElectronicFormat : OPTIONAL IfcIdentifier;
  ValidFrom : OPTIONAL IfcDate;
  ValidUntil : OPTIONAL IfcDate;
  Confidentiality : OPTIONAL IfcDocumentConfidentialityEnum;
  Status : OPTIONAL IfcDocumentStatusEnum;
 INVERSE
  DocumentInfoForObjects : SET OF IfcRelAssociatesDocument FOR RelatingDocument;
  HasDocumentReferences : SET OF IfcDocumentReference FOR ReferencedDocument;
  IsPointedTo : SET OF IfcDocumentInformationRelationship FOR RelatedDocuments;
  IsPointer : SET [0:1] OF IfcDocumentInformationRelationship FOR RelatingDocument;
END_ENTITY;

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