1RDF::Trine::Parser(3) User Contributed Perl DocumentationRDF::Trine::Parser(3)
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NAME

6       RDF::Trine::Parser - RDF Parser class
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VERSION

9       This document describes RDF::Trine::Parser version 1.019
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SYNOPSIS

12        use RDF::Trine::Parser;
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14        RDF::Trine::Parser->parse_url_into_model( $url, $model );
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16        my $parser     = RDF::Trine::Parser->new( 'turtle' );
17        $parser->parse_into_model( $base_uri, $rdf, $model );
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19        $parser->parse_file_into_model( $base_uri, 'data.ttl', $model );
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DESCRIPTION

22       RDF::Trine::Parser is a base class for RDF parsers. It may be used as a
23       factory class for constructing parser objects by name or media type
24       with the "new" method, or used to abstract away the logic of choosing a
25       parser based on the media type of RDF content retrieved over the
26       network with the "parse_url_into_model" method.
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METHODS

29       "media_type"
30           Returns the canonical media type associated with this parser.
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32       "media_types"
33           Returns the media types associated with this parser.
34
35       "parser_by_media_type ( $media_type )"
36           Returns the parser class appropriate for parsing content of the
37           specified media type.  Returns undef if not appropriate parser is
38           found.
39
40       "guess_parser_by_filename ( $filename )"
41           Returns the best-guess parser class to parse a file with the given
42           filename.  Defaults to RDF::Trine::Parser::RDFXML if not
43           appropriate parser is found.
44
45       "new ( $parser_name, @args )"
46           Returns a new RDF::Trine::Parser object for the parser with the
47           specified name (e.g. "rdfxml" or "turtle"). If no parser with the
48           specified name is found, throws a RDF::Trine::Error::ParserError
49           exception.
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51           Any @args will be passed through to the format-specific parser
52           constructor.
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54           If @args contains the key-value pair "(canonicalize => 1)", literal
55           value canonicalization will be attempted during parsing with
56           warnings being emitted for invalid lexical forms for recognized
57           datatypes.
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59       "parse_url_into_model ( $url, $model [, %args] )"
60           Retrieves the content from $url and attempts to parse the resulting
61           RDF into $model using a parser chosen by the associated content
62           media type.
63
64           If %args contains a 'content_cb' key with a CODE reference value,
65           that callback function will be called after a successful response
66           as:
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68            $content_cb->( $url, $content, $http_response_object )
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70           If %args contains a 'useragent' key with a LWP::UserAgent object
71           value, that object is used to retrieve the requested URL without
72           any configuration (such as setting the Accept: header) which would
73           ordinarily take place. Otherwise, the default user agent
74           ("default_useragent" in RDF::Trine) is cloned and configured to
75           retrieve content that will be acceptable to any available parser.
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77       "parse_url ( $url, \&handler [, %args] )"
78           Retrieves the content from $url and attempts to parse the resulting
79           RDF.  For each parsed RDF triple that is parsed, &handler will be
80           called with the triple as an argument. Otherwise, this method acts
81           just like "parse_url_into_model".
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83       "parse_into_model ( $base_uri, $data, $model [, context => $context] )"
84           Parses the bytes in $data, using the given $base_uri. For each RDF
85           statement parsed, will call "$model->add_statement( $statement )".
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87       "parse_file_into_model ( $base_uri, $fh, $model [, context => $context]
88       )"
89           Parses all data read from the filehandle or file $fh, using the
90           given $base_uri. For each RDF statement parsed, will call
91           "$model->add_statement( $statement )".
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93       "parse_file ( $base_uri, $fh, $handler )"
94           Parses all data read from the filehandle or file $fh, using the
95           given $base_uri. If $fh is a filename, this method can guess the
96           associated parse. For each RDF statement parsed, "$handler->( $st
97           )" is called.
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99       "parse ( $base_uri, $rdf, \&handler )"
100       "new_bnode_prefix ()"
101           Returns a new prefix to be used in the construction of blank node
102           identifiers.  If either Data::UUID or UUID::Tiny are available,
103           they are used to construct a globally unique bnode prefix.
104           Otherwise, an empty string is returned.
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106       "default_accept_header"
107           Returns the default HTTP Accept header value used in requesting RDF
108           content (e.g. in "parse_url_into_model") that may be parsed by one
109           of the available RDF::Trine::Parser subclasses.
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111           By default, RDF/XML and Turtle are preferred over other media
112           types.
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BUGS

115       Please report any bugs or feature requests to through the GitHub web
116       interface at <https://github.com/kasei/perlrdf/issues>.
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AUTHOR

119       Gregory Todd Williams  "<gwilliams@cpan.org>"
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122       Copyright (c) 2006-2012 Gregory Todd Williams. This program is free
123       software; you can redistribute it and/or modify it under the same terms
124       as Perl itself.
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128perl v5.34.0                      2021-07-22             RDF::Trine::Parser(3)
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