NAME¶

AtteanX::Parser::SPARQL - SPARQL 1.1 Parser.

VERSION¶

This document describes AtteanX::Parser::SPARQL version 0.034.

SYNOPSIS¶

 use AtteanX::Parser::SPARQL;
 my $algbrea = AtteanX::Parser::SPARQL->parse($sparql);
 # or:
 my $parser     = AtteanX::Parser::SPARQL->new();
 my ($algebra) = $parser->parse_list_from_bytes($sparql);
 
 # or to allow parsing of SPARQL 1.1 Updates:
 
 my $algbrea = AtteanX::Parser::SPARQL->parse_update($sparql);
 # or:
 my $parser = AtteanX::Parser::SPARQL->new(update => 1);
 my ($algebra) = $parser->parse_list_from_bytes($sparql);

DESCRIPTION¶

This module implements a recursive-descent parser for SPARQL 1.1 using the AtteanX::Parser::SPARQLLex tokenizer. Successful parsing results in an object whose type is one of: Attean::Algebra::Query, Attean::Algebra::Update, or Attean::Algebra::Sequence.

ROLES¶

This class consumes Attean::API::Parser, Attean::API::AtOnceParser, and Attean::API::AbbreviatingParser.

ATTRIBUTES¶

"canonical_media_type"

"media_types"

"file_extensions"

"handled_type"

"lexer"

"args"

"build"

"update"

"namespaces"

"baseURI"

"filters"

METHODS¶

"parse ( $sparql )"

Parse the $sparql query string and return the resulting Attean::API::Algebra object.

"parse_update ( $sparql )"

Parse the $sparql update string and return the resulting Attean::API::Algebra object.

parse_list_from_io( $fh )

parse_list_from_bytes( $bytes )

"parse_nodes ( $string )"

Returns a list of Attean::API::Term or Attean::API::Variable objects, parsed in SPARQL syntax from the supplied $string. Parsing is ended either upon seeing a DOT, or reaching the end of the string.

"error"

Returns the error encountered during the last parse.

"new_binary_expression ( $operator, @operands )"

Returns a new binary expression structure.

"new_function_expression ( $function, @operands )"

Returns a new function expression structure.

BUGS¶

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

SEE ALSO¶

AUTHOR¶

Gregory Todd Williams "<gwilliams@cpan.org>"

COPYRIGHT¶

Copyright (c) 2014--2022 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.