neograph::graph::Store Class Reference

Abstract interface for cross-thread shared memory. More...

#include <store.h>

Inheritance diagram for neograph::graph::Store:

Public Member Functions
virtual void	delete_item (const Namespace &ns, const std::string &key)=0
	Delete a single item.
virtual std::optional< StoreItem >	get (const Namespace &ns, const std::string &key) const =0
	Retrieve a single item.
virtual std::vector< Namespace >	list_namespaces (const Namespace &prefix={}) const =0
	List all namespaces under a prefix.
virtual void	put (const Namespace &ns, const std::string &key, const json &value)=0
	Store a value (create or update).
virtual std::vector< StoreItem >	search (const Namespace &ns_prefix, int limit=100) const =0
	Search items under a namespace prefix.

Detailed Description

Abstract interface for cross-thread shared memory.

Provides namespaced key-value storage accessible from any graph thread. Implement this to use databases or other persistence backends.

See also

InMemoryStore for a reference implementation.

Definition at line 49 of file store.h.

Member Function Documentation

delete_item()

virtual void neograph::graph::Store::delete_item ( const Namespace &  ns, const std::string &  key  )

pure virtual

Delete a single item.

Parameters

ns	Namespace path.
key	Item key to delete.

Implemented in neograph::graph::InMemoryStore.

get()

virtual std::optional< StoreItem > neograph::graph::Store::get ( const Namespace &  ns, const std::string &  key  ) const

pure virtual

Retrieve a single item.

Parameters

ns	Namespace path.
key	Item key.

Returns

The item, or std::nullopt if not found.

Implemented in neograph::graph::InMemoryStore.

list_namespaces()

virtual std::vector< Namespace > neograph::graph::Store::list_namespaces ( const Namespace &  prefix = {} ) const

pure virtual

List all namespaces under a prefix.

Parameters

prefix

Namespace prefix to filter by (empty = list all).

Returns

Vector of unique Namespace paths.

Implemented in neograph::graph::InMemoryStore.

put()

virtual void neograph::graph::Store::put ( const Namespace &  ns, const std::string &  key, const json &  value  )

pure virtual

Store a value (create or update).

Parameters

ns	Namespace path for the item.
key	Item key within the namespace.
value	JSON value to store.

Implemented in neograph::graph::InMemoryStore.

search()

virtual std::vector< StoreItem > neograph::graph::Store::search ( const Namespace &  ns_prefix, int  limit = 100  ) const

pure virtual

Search items under a namespace prefix.

Parameters

ns_prefix	Namespace prefix to match (e.g., {"users"} matches all user items).
limit	Maximum number of items to return (default: 100).

Returns

Vector of matching StoreItem objects.

Implemented in neograph::graph::InMemoryStore.

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The documentation for this class was generated from the following file:

• include/neograph/graph/store.h