langchain/templates/neo4j-cypher-memory/ingest.py

from langchain_community.graphs import Neo4jGraph

graph = Neo4jGraph()

graph.query(
    """
MERGE (m:Movie {name:"Top Gun"})
WITH m
UNWIND ["Tom Cruise", "Val Kilmer", "Anthony Edwards", "Meg Ryan"] AS actor
MERGE (a:Actor {name:actor})
MERGE (a)-[:ACTED_IN]->(m)
WITH a
WHERE a.name = "Tom Cruise"
MERGE (a)-[:ACTED_IN]->(:Movie {name:"Mission Impossible"})
"""
)
docs, experimental[patch], langchain[patch], community[patch]: update storage imports (#15429) ran ```bash g grep -l "langchain.vectorstores" \| xargs -L 1 sed -i '' "s/langchain\.vectorstores/langchain_community.vectorstores/g" g grep -l "langchain.document_loaders" \| xargs -L 1 sed -i '' "s/langchain\.document_loaders/langchain_community.document_loaders/g" g grep -l "langchain.chat_loaders" \| xargs -L 1 sed -i '' "s/langchain\.chat_loaders/langchain_community.chat_loaders/g" g grep -l "langchain.document_transformers" \| xargs -L 1 sed -i '' "s/langchain\.document_transformers/langchain_community.document_transformers/g" g grep -l "langchain\.graphs" \| xargs -L 1 sed -i '' "s/langchain\.graphs/langchain_community.graphs/g" g grep -l "langchain\.memory\.chat_message_histories" \| xargs -L 1 sed -i '' "s/langchain\.memory\.chat_message_histories/langchain_community.chat_message_histories/g" gco master libs/langchain/tests/unit_tests//test_imports.py gco master libs/langchain/tests/unit_tests/*/test_public_api.py ``` 2024-01-02 21:47:11 +00:00			`from langchain_community.graphs import Neo4jGraph`
Neo4j conversation cypher template (#12927) Adding custom graph memory to Cypher chain --------- Co-authored-by: Erick Friis <erick@langchain.dev> 2023-11-07 19:05:28 +00:00
			`graph = Neo4jGraph()`

			`graph.query(`
			`"""`
			`MERGE (m:Movie {name:"Top Gun"})`
			`WITH m`
			`UNWIND ["Tom Cruise", "Val Kilmer", "Anthony Edwards", "Meg Ryan"] AS actor`
			`MERGE (a:Actor {name:actor})`
			`MERGE (a)-[:ACTED_IN]->(m)`
			`WITH a`
			`WHERE a.name = "Tom Cruise"`
			`MERGE (a)-[:ACTED_IN]->(:Movie {name:"Mission Impossible"})`
			`"""`
			`)`