NAME¶

Attean::API::Binding - Name to term bindings

VERSION¶

This document describes Attean::API::Binding version 0.002

DESCRIPTION¶

The Attean::API::Binding role defines a common API for all objects that map names to Attean::API::Term objects. This includes triples, quads, and SPARQL results (variable bindings).

REQUIRED METHODS¶

Classes consuming this role must provide the following methods:

"value( $name )"

Returns the Attean::API::Term object mapped to the variable named $name, or "undef" if no such term is mapped.

"variables"

Returns a list of the variable names mapped to Attean::API::Term objects in this mapping.

"apply_map( $mapper )"

Returns a new mapping object (of the same class as the referent) with term objects rewritten using the supplied Attean::Mapper object $mapper.

METHODS¶

This role provides default implementations of the following methods:

"mapping"

Returns a HASH mapping variable names to Attean::API::Term objects.

"values"

Returns a list of Attean::API::Term objects corresponding to the variable names returned by the referent's "variables" method.

"tuples_string"

Returns a string serialization of the Attean::API::Term objects in the order they are returned by the referent's "values" method.

"as_string"

Returns a string serialization of the variable bindings.

"has_blanks"

Returns true if any variable is bound to an Attean::API::Blank term, false otherwise.

BUGS¶

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

SEE ALSO¶

<http://www.perlrdf.org/>

AUTHOR¶

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

COPYRIGHT¶

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