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Author: Jakob Beetz [email protected] Eindhoven University of Technology This is the initial dump of some utility libraries to access STEP schemas and population files.

Currently only a very limited amount of javadoc tags has been added to the packages and the sources.

The library consists of 6 packages:

  • net.sourceforge.osexpress.parser a parser generator written by Josh Lubel et al in the context of the OSEXPRESS project. https://sourceforge.net/projects/osexpress/ modified and adapted slightly

  • nl.tue.buildingsmart.express.parser a modfied ANTLR grammar Express2SDAI.g it makes use of the dictionary package to store an in-memory meta-model of an ISO 10303 part 11 EXPRESS schema definition file. The main schemas that have been tested with it are different versions of the Industry Foundation Classes (IFC) model developed under the umbrella of the buildingSMART / IAI organization: http://www.iai-international.org/ http://www.iai-international.org/Model/IFC(ifcXML)Specs.html

  • nl.tue.buildingsmart.express.dictionary a meta model structure to capture some of the essential modeling constructs of the EXPRESS schema definition language. Many advanced features such as RULE, FUNCTION, QUERY etc. are not implemnted yet

  • nl.tue.buildingsmart.express.population a JavaCC based file-reader for ISO 10303 part 21 Step Physical File Format (SPFF) files. This primitive piece creates a large Hashmap of ENTITY and ATTRIBUTE instances and will quickly go through the memory roof of large population files. It has been particularly developed with reading in IFC files in mind The original JavaCC grammar has been developed by Singva Ma

  • nl.tue.buildingsmart.express.population.test a primitive test that reads in a SPFF (IFC) file given in argv and provided an .exp EXPRESS schema will spit out some statistics.

  • nl.tue.buildingsmart.emf a primitive generator that takes and EXPRESS .exp schema and converts it into an ecore model for the use in the Eclipse Modeling Framework (EMF)

other highly experimental mappings to RDF(S) and OWL, graphical editors, network visualizers etc. are available upon request

TODO: loads and loads of cleanup, refactoring and documentation.