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 IfcDocumentInformationSUBTYPE 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;INVERSEDocumentInfoForObjects : 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;
#########################
