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

Attean::API::Binding(3pm) User Contributed Perl Documentation Attean::API::Binding(3pm)

NAME

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

VERSION

This document describes Attean::API::Binding version 0.017

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.
"is_ground"
Returns tue is all the bound values consume Attean::API::Term, false otherwise.
"values_consuming_role( $role )"
Returns the list of bound values that consume $role.
"tree_attributes"
Returns the variables which are bound in this object.
"apply_bindings( $binding )"
Construct a new binding by replacing variables with their bound values from $binding.
"parse ( $string )"
Returns a triple or quad pattern object using the variables and/or terms parsed from $string in SPARQL syntax.
"project( @keys )"
Returns a new Attean::Result binding which contains variable-value mappings from the invocant for every variable name in @keys.

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 (c) 2014--2016 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
2017-10-02 perl v5.26.0