This is built if --with-tcl is given to the configure line, or --with-tcl=tclsh8.3 to use a particular Tcl version/program.
The Tcl shared library locations are discoverable but where the matching tcl.h includes live is something that is hard to do entirely automatically. Use configure option --with-tcl-include=/usr/local/include/tcl8.3 to specify it, if the default is not correct.
The standard 'make' at the top level will then build the Tcl API. You can also compile the Tcl interface by hand as follows:
cd tcl make # optional, but it may require a top-level 'make install # first depending on the operating system and how it # handles shared libraries make check
To install it system wide do this as root (or maybe via sudo make install). NOTE: This is untested:
root# make install
The Tcl interface has been tested with Tcl 8.4, 8.3 and 8.0.5. The TCL interface is alpha quality - the test and examples work.
The Tcl API is an object-based API with the class names and method names flattened into Tcl procedure names like this: librdf_class_method - the same names as in the underlying C API. The object references become Tcl variables.
The example program provided parses an RDF/XML source file into a model. It should be run with two arguments - the URI of the content (as file:/path/to/content) and the parser name (say, raptor):
tcl example.tcl file:../perl/dc.rdf raptor
Tools written in Extended Object Tcl (XOTcl):
xoRDF developed by Gustaf Neumann (University of Vienna, Austria) and Uwe Zdun (University of Essen, Germany) as part of the ActiWeb framework (X11-style open source license). xoRDF uses either the XML parser written in Tcl from TclXML (free for non-commercial use) or expat.
There is an online demonstration of the parser available. Another sample xoRDF application was developed for the ongoing UNIVERSAL project (funded by EU IST) targeting a "brokerage platform for learning resources", which processes RDF based metadata of learning resources and presents it in a a user friedly way (source).
Copyright 2001-2004 Dave Beckett, Institute for Learning and Research Technology, University of Bristol