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Attean::API::Binding(3pm) | User Contributed Perl Documentation | Attean::API::Binding(3pm) |
NAME¶
Attean::API::Binding - Name to term bindingsVERSION¶
This document describes Attean::API::Binding version 0.021DESCRIPTION¶
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¶
AUTHOR¶
Gregory Todd Williams "<gwilliams@cpan.org>"COPYRIGHT¶
Copyright (c) 2014--2018 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.2019-02-13 | perl v5.28.1 |