disk_storage
OnDiskPropertyDatabase Objects
class OnDiskPropertyDatabase(ABC)
An abstract class for implementing on-disk storage features with specific databases.
save_node_property
def save_node_property(node_id: int, property_name: str,
property_value: str) -> None
Saves a node property to an on disk database.
load_node_property
def load_node_property(node_id: int, property_name: str,
property_value: str) -> Optional[str]
Loads a node property from an on disk database.
delete_node_property
def delete_node_property(node_id: int, property_name: str,
property_value: str) -> None
Deletes a node property from an on disk database.
save_relationship_property
def save_relationship_property(relationship_id: int, property_name: str,
property_value: str) -> None
Saves a relationship property to an on disk database.
load_relationship_property
def load_relationship_property(relationship_id: int, property_name: str,
property_value: str) -> Optional[str]
Loads a relationship property from an on disk database.
delete_relationship_property
def delete_relationship_property(node_id: int, property_name: str,
property_value: str) -> None
Deletes a node property from an on disk database.
drop_database
def drop_database() -> None
Deletes all entries from the on disk database.
SQLitePropertyDatabase Objects
class SQLitePropertyDatabase(OnDiskPropertyDatabase)
execute_query
def execute_query(query: str) -> List[str]
Executes an SQL query on the on disk property database.
Arguments:
query- A string representing an SQL query.
Returns:
A list of strings representing the results of the query.
drop_database
def drop_database() -> None
Deletes all properties in the database.
save_node_property
def save_node_property(node_id: int, property_name: str,
property_value: str) -> None
Saves a node property to an on disk database.
Arguments:
node_id- An integer representing the internal id of the node.property_name- A string representing the name of the property.property_value- A string representing the value of the property.
load_node_property
def load_node_property(node_id: int, property_name: str) -> Optional[str]
Loads a node property from an on disk database.
Arguments:
node_id- An integer representing the internal id of the node.property_name- A string representing the name of the property.
Returns:
An optional string representing the property value.
delete_node_property
def delete_node_property(node_id: int, property_name: str) -> None
Deletes a node property from an on disk database.
Arguments:
node_id- An integer representing the internal id of the node.property_name- A string representing the name of the property.
save_relationship_property
def save_relationship_property(relationship_id: int, property_name: str,
property_value: str) -> None
Saves a relationship property to an on disk database.
Arguments:
relationship_id- An integer representing the internal id of the relationship.property_name- A string representing the name of the property.property_value- A string representing the value of the property.
load_relationship_property
def load_relationship_property(relationship_id: int,
property_name: str) -> Optional[str]
Loads a relationship property from an on disk database.
Arguments:
relationship_id- An integer representing the internal id of the relationship.property_name- A string representing the name of the property.
Returns:
An optional string representing the property value.
delete_relationship_property
def delete_relationship_property(relationship_id: int,
property_name: str) -> None
Deletes a node property from an on disk database.
Arguments:
relationship_id- An integer representing the internal id of the relationship.property_name- A string representing the name of the property.