| Version 6 (modified by yy, 14 years ago) |
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Perl modules concerning RDF serialization
I (yy) tried the following modules.
RDF::Simple is literally "simple", so IMO it is useful only for understanding how serialization works, but not for a practical use. As the module page says, it doesn't care the node type. You cannot declare whether a node is a URI or literal. On the other hand, a serialized output (RDF/XML) is better organized than the other.
RDF::Trine doesn't provide a sufficient document, and I have a bit difficulty in making a code. A serialized output (RDF/XML) has some redundancies. This module groups statements that share a same subject, and embraces them by "<rdf:Description>" tags. It's OK, but declaration of user-defined namespaces is not at the first "<rdf:RDF>" tag, but at each rdf-description tag. Also, nest level is one. Even so, it's more compact than that of REF::Redland.
RDF::Redland uses a compilation (i.e., not a pure Perl module), and you may have troubles on some platforms / environments. In my case the cpan command didn't work because of the "make test" failure. The reason is that the test script assumes that libraries generated by swig are in the shared library paths. After taking care of it, no problem occurred. To make the test script work, the following paths need to be added to LD_LIBRARY_PATH.
Redland-1.0.5.4/redland/rasqal/src/.libs Redland-1.0.5.4/redland/raptor/src/.libs
