4.1.3.5 Object User Identity
====================
对象可以被标记以供人类识别,其中 Name 可以指示一个广为人知的标识符。虽然对此类标识符的使用没有限制,但建议 Name 在其包含的范围内是唯一的。特定实体提供了进一步的使用指南;例如,对于空间,Name 可以反映房间号。对象可以通过 Description 特性提供描述,该描述提供了识别或定位对象的进一步上下文。
特定子类型为 Object User Identity 模板引入了附加特性。
空间对象可以通过 LongName 特性进一步识别。此值通常应对应于描述楼层或房间的建筑标牌。虽然 Name 特性通常提供一个编码的或缩写的标识符,但 LongName 提供了一个功能性的位置名称,例如“接待区”。请参阅概念模板 Spatial Element Occurrence Attributes
物理元素可以通过 Tag 特性进一步识别。这是一个人类可读的标识符,例如元素或项目编号。虽然对此类标签的使用没有限制,但建议 Tag 在其包含的范围内是唯一的。请参阅概念模板 Element Occurrence Attributes
下图展示了应用此概念时使用的通用类和关系。
此外,概念可能对常见或标准化的行业实践和场景具有特殊意义。对于这些特定的使用场景,下表展示了用户可采用的推荐通用使用模式列表。
G
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObject.htm'>IfcObject</a>
IfcObject
1. GlobalId
[1:1]
2. OwnerHistory
[0:1]
ObjectName
3. Name
[0:1]
ObjectDescription
4. Description
[0:1]
HasAssignments
[0:?]
Nests
[0:1]
IsNestedBy
[0:?]
HasContext
[0:1]
IsDecomposedBy
[0:?]
Decomposes
[0:1]
HasAssociations
[0:?]
5. ObjectType
[0:1]
IsDeclaredBy
[0:1]
Declares
[0:?]
IsTypedBy
[0:1]
IsDefinedBy
[0:?]
IfcLabel_0
IfcLabel
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObject.htm'>IfcObject</a>:Name1->IfcLabel_0:IfcLabel0
IfcText_0
IfcText
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObject.htm'>IfcObject</a>:Description1->IfcText_0:IfcText0
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelDefinesByType.htm'>IfcRelDefinesByType</a>
IfcRelDefinesByType
1. GlobalId
[1:1]
2. OwnerHistory
[0:1]
3. Name
[0:1]
4. Description
[0:1]
5. RelatedObjects
[1:?]
6. RelatingType
[1:1]
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObject.htm'>IfcObject</a>:IsTypedBy1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelDefinesByType.htm'>IfcRelDefinesByType</a>:RelatedObjects0
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm'>IfcTypeObject</a>
IfcTypeObject
1. GlobalId
[1:1]
2. OwnerHistory
[0:1]
TypeName
3. Name
[0:1]
TypeDescription
4. Description
[0:1]
HasAssignments
[0:?]
Nests
[0:1]
IsNestedBy
[0:?]
HasContext
[0:1]
IsDecomposedBy
[0:?]
Decomposes
[0:1]
HasAssociations
[0:?]
5. ApplicableOccurrence
[0:1]
6. HasPropertySets
[1:?]
Types
[0:1]
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelDefinesByType.htm'>IfcRelDefinesByType</a>:RelatingType1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm'>IfcTypeObject</a>:IfcTypeObject0
IfcLabel_1
IfcLabel
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm'>IfcTypeObject</a>:Name1->IfcLabel_1:IfcLabel0
IfcText_1
IfcText
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm'>IfcTypeObject</a>:Description1->IfcText_1:IfcText0
Figure 4.1.3.5.A
General Usage表 4.1.3.5.B