Neo4jGraph

from neo4j_runway.database import Neo4jGraph

Handler for Neo4j graph interactions.

Attributes
----------
apoc_version : Union[str, None]
    The APOC version present in the database.
database : Union[str, None]
    The database name to run queries against in the
    Neo4j instance.
database_edition : str
    The edition of the Neo4j instance.
database_version : str
    The Neo4j version of the Neo4j instance.
driver : GraphDatabase.Driver
    The driver used to communicate with Neo4j.
    Constructed from credentials provided to the
    constructor.
schema : Union[Dict[str, Any], None]
    The database schema gathered from APOC.meta.schema

Class Methods

init

Constructor for the Neo4jGraph.

Parameters
----------
username : Optional[str], optional
    Neo4j username. If not provided, will check
    NEO4J_USERNAME env variable. By default None
password : Optional[str], optional
    Neo4j password. If not provided, will check
    NEO4J_PASSWORD env variable. By default None
uri : Optional[str], optional
    Neo4j uri. If not provided, will check NEO4J_URI env
    variable. By default None
database : Optional[str], optional
    Neo4j database to connect to. If not provided, will
    check NEO4J_DATABASE env variable. By default None
driver_config : Dict[str, Any], optional
    Any additional configuration to provide the driver,
    by default dict()

refresh_schema

Refresh the graph schema via APOC from the database.

Raises
------
APOCNotInstalledError
    If APOC is not installed on the Neo4j instance.

Returns
-------
Dict[str, Any]
    The schema in APOC format, if APOC is present on
    database

verify

Verify connection and authentication.

Returns
-------
Dict[str, Any]
    Whether connection is successful and any messages.

Class Properties

schema

The database schema provided by apoc.meta.schema

Returns
-------
Dict[str, Any]
    The schema.