Redland librdf RDF API Library (original) (raw)

Redland librdf Language Bindings - Perl Interface

Installing the Redland Perl interface

This is built if --with-perl is given to the configure line, or --with-perl=perl5.8 to use a particular perl version/program. The standard 'make' at the top level will build it.

You can also compile the perl interface by hand as follows:

cd perl make

optional

make check

To install it system wide do this as root (or maybe via sudo make install):

root# make install

The Redland Perl interface is mature has been tested with the following versions (5.6.0 is the likely minimum; 5.005 is too old).

5.8.3 on Solaris/Sparc
5.8.3 on Linux/x86
5.8.2 on Linux/x86
5.8.1-RC3 on OSX/PPC
5.8.0 on Linux/x86
5.8.0 on Linux/IA64

Testing the Redland Perl interface

If you did the optional install above, run the perl example program with:

perl ./example.pl

Otherwise, to run in the source tree do:

perl -Iblib/arch -Iblib/lib ./example.pl

and the result should be:

Creating storage

Creating model

Creating statement

Adding statement to model

Adding statement (new Statement(n, n, n)) to model

Adding statement (n,n,n) to model

Parsing URI (file) ../data/dc.rdf Parsing added 3 statements

Printing all statements Statement: {[http://example.org/foo], [http://example.org/foo], [http://example.org/foo]} Statement: {[http://example.org/foo], [http://example.org/foo], [http://example.org/foo]} Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/title], "Dave Beckett's Home Page"} Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/creator], "Dave Beckett"} Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/creator], "Dave Beckett"} Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/description], "The generic home page of Dave Beckett."}

Searching model for statements matching predicate http://purl.org/dc/elements/1.1/creator Matching Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/creator], "Dave Beckett"} Subject: [http://www.dajobe.org/] Predicate: [http://purl.org/dc/elements/1.1/creator] Object: Dave Beckett Matching Statement: {[http://www.dajobe.org/], [http://purl.org/dc/elements/1.1/creator], "Dave Beckett"} Subject: [http://www.dajobe.org/] Predicate: [http://purl.org/dc/elements/1.1/creator] Object: Dave Beckett

Searching model for targets of subject http://www.dajobe.org/ predicate http://purl.org/dc/elements/1.1/creator Matching Node: Dave Beckett Matching Node: Dave Beckett Querying for dc:titles: result 1: { a=[http://www.dajobe.org/] c=Dave Beckett's Home Page }

Writing model to test-out.rdf as rdf/xml

Done

Using the Redland Perl API

Read the Redland Perl PODdocumentation for full details of the classes and methods provided along with examples of use.

The Perl API is an object-based API reflecting the same structure of the Redland objects with simple mappings between them:

Perl API Reference Documentation

Either use any of the RDF::Redland:: module links above or start at the main RDF::Redland moduleand follow the references from there.