Question answering over a graph.
Used to correct relationship direction in generated Cypher statements. This code is copied from the winner's submission to the Cypher competition: https://github.com/sakusaku-rich/cypher-direction-competition
Abstract class for graph operations.
Chain for question-answering against a graph by generating Cypher statements.
Make sure that the database connection uses credentials that 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://docs.langchain.com/oss/python/security-policy for more information.
