`langchain.chains.graph_qa.cypher_utils`.CypherQueryCorrector¶

class langchain.chains.graph_qa.cypher_utils.CypherQueryCorrector(schemas: List[Schema])[source]¶

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

Attributes

Methods

`__init__`(schemas)	param schemas list of schemas
`clean_node`(node)	param node node in string format
`correct_query`(query)	param query cypher query
`detect_labels`(str_node, node_variable_dict)	param str_node node in string format
`detect_node_variables`(query)	param query cypher query
`detect_relation_types`(str_relation)	param str_relation relation in string format
`extract_node_variable`(part)	param part node in string format
`extract_paths`(query)	param query cypher query
`judge_direction`(relation)	param relation relation in string format
`verify_schema`(from_node_labels, ...)	param from_node_labels labels of the from node

__init__(schemas: List[Schema])[source]¶

clean_node(node: str) → str[source]¶

correct_query(query: str) → str[source]¶

detect_labels(str_node: str, node_variable_dict: Dict[str, Any]) → List[str][source]¶

Parameters

detect_node_variables(query: str) → Dict[str, List[str]][source]¶

detect_relation_types(str_relation: str) → Tuple[str, List[str]][source]¶

extract_node_variable(part: str) → Optional[str][source]¶

extract_paths(query: str) → List[str][source]¶

judge_direction(relation: str) → str[source]¶

verify_schema(from_node_labels: List[str], relation_types: List[str], to_node_labels: List[str]) → bool[source]¶

Parameters

langchain.chains.graph_qa.cypher_utils.CypherQueryCorrector¶