Definition from IAI: An IfcDocumentReference is a
reference to the location of a document. The reference is given by a system
interpretable Location attribute (e.g., an URL string) or by a human
readable location, where the document can be found, and an optional inherited
internal reference ItemReference, which refers to a system interpretable
position within the document. The optional inherited Name attribute is
meant to have meaning for human readers. Optional document metadata can also be
captured through reference to IfcDocumentInformation.
HISTORY: New Entity in IFC
Release 2.0. In IFC Release 2x: Restructuring in reference and additional
information
ISSUES: See issue and change
log for changes made in IFC Release 2x
Use Definitions
Provides a lightweight capability that enables a document to be
identified solely by reference to a name by which it is commonly known. The
reference can also be used to point to document information for more detail as
required.
EXAMPLE: IAI mission in a document "Introduction to
IAI" can be referenced by IfcDocumentReference.Location =
'http://iaiweb.lbl.gov/intro.html', and IfcDocumentReference.Name = 'Mission
statement'. Additionally: IfcDocumentReference.ReferenceToDocument[1].Name =
'Introduction to IAI', and
IfcDocumentReference.ReferenceToDocument[1].Description = 'Basic document to
introduce the aims of IAI'.
The content in the example could be exchanged as follows:
-
#1 = IFCDOCUMENTREFERENCE ('http://iaiweb.lbl.gov/intro.html',$,'Mission statement');
-
#2 = IFCDOCUMENTINFORMATION ('id001','Introduction to IAI', 'Basic document to introduce the aims of IAI', #1, ... );
