langchain_community.graphs.neptune_graph.NeptuneGraph¶
class langchain_community.graphs.neptune_graph.NeptuneGraph(host: str, port: int = 8182, use_https: bool = True, client: Any = None, credentials_profile_name: Optional[str] = None, region_name: Optional[str] = None, service: str = 'neptunedata', sign: bool = True)[source]¶
Neptune wrapper for graph operations.
Parameters
host – endpoint for the database instance
port – port number for the database instance, default is 8182
use_https – whether to use secure connection, default is True
client – optional boto3 Neptune client
credentials_profile_name – optional AWS profile name
region_name – optional AWS region, e.g., us-west-2
service – optional service name, default is neptunedata
sign – optional, whether to sign the request payload, default is True
Example
graph = NeptuneGraph(host=’<my-cluster>’,
port=8182
)
Security note: Make sure that the database connection uses credentialsthat are narrowly-scoped to only include necessary permissions.
Failure to do so may result in data corruption or loss, since the calling
code may attempt commands that would result in deletion, mutation
of data if appropriately prompted or reading sensitive data if such
data is present in the database.
The best way to guard against such negative outcomes is to (as appropriate)
limit the permissions granted to the credentials used with this tool.
See https://python.langchain.com/docs/security for more information.
Create a new Neptune graph wrapper instance.
Attributes
get_schema
Returns the schema of the Neptune database
Methods
__init__(host[, port, use_https, client, ...])
Create a new Neptune graph wrapper instance.
query(query[, params])
Query Neptune database.