Struct Variable¶

Defined in File Variable.hpp

Inheritance Relationships¶

Base Type¶

public rdf4cpp::Node (Struct Node)

Struct Documentation¶

struct Variable : public rdf4cpp::Node ¶

Public Functions

Variable() noexcept¶

explicit Variable(storage::identifier::NodeBackendHandle handle) noexcept¶

explicit Variable(std::string_view name, bool anonymous = false, storage::DynNodeStoragePtr node_storage = storage::default_node_storage)¶

Variable to_node_storage(storage::DynNodeStoragePtr node_storage) const¶

Variable try_get_in_node_storage(storage::DynNodeStoragePtr node_storage) const noexcept¶

bool is_anonymous() const¶

CowString name() const¶

FetchOrSerializeResult fetch_or_serialize_name(std::string_view &out, writer::BufWriterParts writer) const noexcept¶

See also

Literal::fetch_or_serialize_lexical_form

bool serialize(writer::BufWriterParts writer) const noexcept¶: See Node::serialize

explicit operator std::string() const¶

bool is_blank_node() const = delete¶

bool is_literal() const = delete¶

bool is_variable() const = delete¶

bool is_iri() const = delete¶

std::strong_ordering order(Variable const &other) const noexcept¶

bool order_eq(Variable const &other) const noexcept¶

bool order_ne(Variable const &other) const noexcept¶

bool eq(Variable const &other) const noexcept¶

bool ne(Variable const &other) const noexcept¶

Public Static Functions

static Variable make_named(std::string_view name, storage::DynNodeStoragePtr node_storage = storage::default_node_storage)¶

static Variable make_anonymous(std::string_view name, storage::DynNodeStoragePtr node_storage = storage::default_node_storage)¶

static Variable make_unchecked(std::string_view name, bool anonymous = false, storage::DynNodeStoragePtr node_storage = storage::default_node_storage)¶

static Variable find_named(std::string_view name, storage::DynNodeStoragePtr node_storage = storage::default_node_storage) noexcept¶

searches for a named Variable in the specified node storage and returns it. returns a null Variable, if not found.

Parameters:

name –
node_storage –

Returns:

static Variable find_anonymous(std::string_view name, storage::DynNodeStoragePtr node_storage = storage::default_node_storage) noexcept¶

searches for an anonymous Variable in the specified node storage and returns it. returns a null Variable, if not found.

Parameters:

name –
node_storage –

Returns:

static void validate(std::string_view var_name, bool anonymous = false)¶

Validates that the given name is a valid Variable name

Parameters:

var_name – name to check
anonymous – if the variable is supposed to be anonymous

Throws:

ParsingError – if the variable name is not valid

Friends

friend struct Node

friend std::ostream &operator<<(std::ostream &os, const Variable &variable)¶