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.\"
.IX Title "RDF::Trine::Parser 3pm"
.TH RDF::Trine::Parser 3pm "2014-10-24" "perl v5.20.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
RDF::Trine::Parser \- RDF Parser class
.SH "VERSION"
.IX Header "VERSION"
This document describes RDF::Trine::Parser version 1.011
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use RDF::Trine::Parser;
\& 
\& RDF::Trine::Parser\->parse_url_into_model( $url, $model );
\& 
\& my $parser     = RDF::Trine::Parser\->new( \*(Aqturtle\*(Aq );
\& $parser\->parse_into_model( $base_uri, $rdf, $model );
\& 
\& $parser\->parse_file_into_model( $base_uri, \*(Aqdata.ttl\*(Aq, $model );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
RDF::Trine::Parser is a base class for \s-1RDF\s0 parsers. It may be used as a factory
class for constructing parser objects by name or media type with the \f(CW\*(C`new\*(C'\fR
method, or used to abstract away the logic of choosing a parser based on the
media type of \s-1RDF\s0 content retrieved over the network with the
\&\f(CW\*(C`parse_url_into_model\*(C'\fR method.
.SH "METHODS"
.IX Header "METHODS"
.ie n .IP """media_type""" 4
.el .IP "\f(CWmedia_type\fR" 4
.IX Item "media_type"
Returns the canonical media type associated with this parser.
.ie n .IP """media_types""" 4
.el .IP "\f(CWmedia_types\fR" 4
.IX Item "media_types"
Returns the media types associated with this parser.
.ie n .IP """parser_by_media_type ( $media_type )""" 4
.el .IP "\f(CWparser_by_media_type ( $media_type )\fR" 4
.IX Item "parser_by_media_type ( $media_type )"
Returns the parser class appropriate for parsing content of the specified media type.
Returns undef if not appropriate parser is found.
.ie n .IP """guess_parser_by_filename ( $filename )""" 4
.el .IP "\f(CWguess_parser_by_filename ( $filename )\fR" 4
.IX Item "guess_parser_by_filename ( $filename )"
Returns the best-guess parser class to parse a file with the given filename.
Defaults to RDF::Trine::Parser::RDFXML if not appropriate parser is found.
.ie n .IP """new ( $parser_name, @args )""" 4
.el .IP "\f(CWnew ( $parser_name, @args )\fR" 4
.IX Item "new ( $parser_name, @args )"
Returns a new RDF::Trine::Parser object for the parser with the specified name
(e.g. \*(L"rdfxml\*(R" or \*(L"turtle\*(R"). If no parser with the specified name is found,
throws a RDF::Trine::Error::ParserError exception.
.Sp
Any \f(CW@args\fR will be passed through to the format-specific parser
constructor.
.Sp
If \f(CW@args\fR contains the key-value pair \f(CW\*(C`(canonicalize => 1)\*(C'\fR, literal
value canonicalization will be attempted during parsing with warnings being
emitted for invalid lexical forms for recognized datatypes.
.ie n .IP """parse_url_into_model ( $url, $model [, %args] )""" 4
.el .IP "\f(CWparse_url_into_model ( $url, $model [, %args] )\fR" 4
.IX Item "parse_url_into_model ( $url, $model [, %args] )"
Retrieves the content from \f(CW$url\fR and attempts to parse the resulting \s-1RDF\s0
into \f(CW$model\fR using a parser chosen by the associated content media type.
.Sp
If \f(CW%args\fR contains a \f(CW\*(Aqcontent_cb\*(Aq\fR key with a \s-1CODE\s0 reference value,
that callback function will be called after a successful response as:
.Sp
.Vb 1
\& $content_cb\->( $url, $content, $http_response_object )
.Ve
.Sp
If \f(CW%args\fR contains a \f(CW\*(Aquseragent\*(Aq\fR key with a LWP::UserAgent object value,
that object is used to retrieve the requested \s-1URL\s0 without any configuration (such as
setting the Accept: header) which would ordinarily take place. Otherwise, the default
user agent (\*(L"default_useragent\*(R" in RDF::Trine) is cloned and configured to retrieve
content that will be acceptable to any available parser.
.ie n .IP """parse_into_model ( $base_uri, $data, $model [, context => $context] )""" 4
.el .IP "\f(CWparse_into_model ( $base_uri, $data, $model [, context => $context] )\fR" 4
.IX Item "parse_into_model ( $base_uri, $data, $model [, context => $context] )"
Parses the bytes in \f(CW$data\fR, using the given \f(CW$base_uri\fR. For each \s-1RDF\s0
statement parsed, will call \f(CW\*(C`$model\->add_statement( $statement )\*(C'\fR.
.ie n .IP """parse_file_into_model ( $base_uri, $fh, $model [, context => $context] )""" 4
.el .IP "\f(CWparse_file_into_model ( $base_uri, $fh, $model [, context => $context] )\fR" 4
.IX Item "parse_file_into_model ( $base_uri, $fh, $model [, context => $context] )"
Parses all data read from the filehandle or file \f(CW$fh\fR, using the 
given \f(CW$base_uri\fR. For each \s-1RDF\s0 statement parsed, will call
\&\f(CW\*(C`$model\->add_statement( $statement )\*(C'\fR.
.ie n .IP """parse_file ( $base_uri, $fh, $handler )""" 4
.el .IP "\f(CWparse_file ( $base_uri, $fh, $handler )\fR" 4
.IX Item "parse_file ( $base_uri, $fh, $handler )"
Parses all data read from the filehandle or file \f(CW$fh\fR, using the given
\&\f(CW$base_uri\fR. If \f(CW$fh\fR is a filename, this method can guess the
associated parse. For each \s-1RDF\s0 statement parsed, \f(CW\*(C`$handler\->( $st )\*(C'\fR is called.
.ie n .IP """parse ( $base_uri, $rdf, \e&handler )""" 4
.el .IP "\f(CWparse ( $base_uri, $rdf, \e&handler )\fR" 4
.IX Item "parse ( $base_uri, $rdf, &handler )"
.PD 0
.ie n .IP """new_bnode_prefix ()""" 4
.el .IP "\f(CWnew_bnode_prefix ()\fR" 4
.IX Item "new_bnode_prefix ()"
.PD
Returns a new prefix to be used in the construction of blank node identifiers.
If either Data::UUID or UUID::Tiny are available, they are used to construct
a globally unique bnode prefix. Otherwise, an empty string is returned.
.ie n .IP """default_accept_header""" 4
.el .IP "\f(CWdefault_accept_header\fR" 4
.IX Item "default_accept_header"
Returns the default \s-1HTTP\s0 Accept header value used in requesting \s-1RDF\s0 content (e.g. in
\&\*(L"parse_url_into_model\*(R") that may be parsed by one of the available RDF::Trine::Parser
subclasses.
.Sp
By default, \s-1RDF/XML\s0 and Turtle are preferred over other media types.
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs or feature requests to through the GitHub web interface
at <https://github.com/kasei/perlrdf/issues>.
.SH "AUTHOR"
.IX Header "AUTHOR"
Gregory Todd Williams  \f(CW\*(C`<gwilliams@cpan.org>\*(C'\fR
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2006\-2012 Gregory Todd Williams. This
program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.