IFCXML -which xsd schema is Archicad using?

Anonymous — Thu, 13 Oct 2011 08:12:31 GMT

I am working on an application that could handle ifcxml content (using Microsoft .NET C#).
I am using xsd schema from http://www.iai-tech.org/ifcXML/IFC2x3/FINAL IFC2X3.xsd for early binding and to convert xml content to internal clases.

When deserializing files exported from Archicad I get errors like "there is an error in xml line 2" or "unsupported type". I tried also with the help of other libraries (like open source ifcdotnet) - same thing.

After analysing Archicad ifcxml files, I noticed that the namespace is not the same as in iai-tech, thus probably this is the same thing (?) (namespace in ian-tech is "xmlns:ex="urn:iso.org:standard:10303:part(28):version(2):xmlschema:common" in Archicad there is <doc:iso_10303_28 xmlns:doc="urn:oid:1.0.10303.28.2.1.3" > ...).

But then again there are some data types in Arhicad files that are slightly different from the specification and cause deserialization to fail (for example Archicad is using integer-wrapper inside element RefLongitude, while in xsd there is only long-wrapper).

So my question is where to find exact xsd schema used by Archicad or just to give me some other tip how to deserialize Archicad generated ifcxml files (since I would not like to parse those files manually)?

topic IFCXML -which xsd schema is Archicad using? in Collaboration with other software

IFCXML -which xsd schema is Archicad using?