NAME
Apache::XPointer::RDQL - mod_perl handler for addressing XML fragments using the RDF Data Query Language.
SYNOPSIS
<Directory /foo/bar>
<FilesMatch "\.rdf$">
SetHandler perl-script
PerlHandler Apache::XPointer::RDQL::RDFStore
PerlSetVar XPointerSendRangeAs "application/rdf+xml"
</FilesMatch>
</Directory>
#
my $ua = LWP::UserAgent->new();
my $req = HTTP::Request->new(GET => "http://example.com/foo/bar/baz.rdf");
$req->header("Range" => qq(SELECT ?title, ?link
WHERE
(?item, <rdf:type>, <rss:item>),
(?item, <rss::title>, ?title),
(?item, <rss::link>, ?link)
USING
rdf for <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
rss for <http://purl.org/rss/1.0/>));
$req->header("Accept" => qq(mulitpart/mixed));
my $res = $ua->request($req);DESCRIPTION
Apache::XPointer::RDQL::RDFStore is a mod_perl handler to address XML fragments using the HTTP 1.1 Range and Accept headers and the XPath scheme, as described in the paper : A Semantic Web Resource Protocol: XPointer and HTTP.
Additionally, the handler may also be configured to recognize a conventional CGI parameter as a valid range identifier.
If no 'range' property is found, then the original document is sent unaltered.
If an Accept header is specified with no corresponding match, then the server will return (406) HTTP_NOT_ACCEPTABLE.
Successful queries will return (206) HTTP_PARTIAL_CONTENT.
IMPORTANT
This package is a base class and not expected to be invoked directly. Please use one of the RDQL parser-specific handlers instead.
SUPPORTED PARSERS
RDFStore
Consult Apache::XPointer::RDQL::RDFStore
MOD_PERL COMPATIBILITY
This handler will work with both mod_perl 1.x and mod_perl 2.x.
VERSION
1.1
DATE
$Date: 2004/11/16 04:33:33 $
AUTHOR
Aaron Straup Cope <ascope@cpan.org>
SEE ALSO
http://www.w3.org/Submission/RDQL/
LICENSE
Copyright (c) 2004 Aaron Straup Cope. All rights reserved.
This is free software, you may use it and distribute it under the same terms as Perl itself.