2023-10-26 01:47:42 +00:00
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from langchain.graphs import Neo4jGraph
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graph = Neo4jGraph()
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2023-10-29 22:50:09 +00:00
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# Import sample data
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2023-10-26 01:47:42 +00:00
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graph.query(
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"""
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MERGE (m:Movie {name:"Top Gun"})
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WITH m
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UNWIND ["Tom Cruise", "Val Kilmer", "Anthony Edwards", "Meg Ryan"] AS actor
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MERGE (a:Person {name:actor})
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MERGE (a)-[:ACTED_IN]->(m)
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"""
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)
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# Create full text index for entity matching
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# on Person and Movie nodes
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graph.query(
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"CREATE FULLTEXT INDEX entity IF NOT EXISTS"
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" FOR (m:Movie|Person) ON EACH [m.title, m.name]"
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)
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