neo4j cypher queries - node name and label - relation name and type - records content / published by https://github.com/dacr/code-examples-manager #50657667-fdcf-4b0c-8562-aebed139c5c5/abd4396c122b2bd6c5be585b55f1819dab101520

neo4j-cypher-raw-records-content.sc

// summary : neo4j cypher queries - node name and label - relation name and type - records content
// keywords : scala, neo4j, cypher, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 50657667-fdcf-4b0c-8562-aebed139c5c5
// created-on : 2024-06-19T14:12:31+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "org.neo4j.test:neo4j-harness:5.20.0"
//> using dep "org.neo4j.driver:neo4j-java-driver:5.21.0"
// ---------------------

import org.neo4j.driver.{GraphDatabase, AuthTokens}
import scala.util.Using
import scala.util.chaining.*
import scala.jdk.CollectionConverters.*

val fixture =
  """// ---- NODES
    |CREATE (jane:Person {name: 'JANE', age: 32})
    |CREATE (joe:Person {name: 'JOE', age: 42})
    |CREATE (james:User {name: 'JAMES', age: 64})
    |
    |// ---- EDGES
    |CREATE (jane)-[:KNOWS {since:5}]->(joe)
    |CREATE (joe)-[:LIKES {level:32}]->(jane)
    |""".stripMargin

val builder =
  org.neo4j.harness.Neo4jBuilders
    .newInProcessBuilder()
    .withFixture(fixture)

Using(builder.build()) { embedded =>
  Using(GraphDatabase.driver(embedded.boltURI(), AuthTokens.none())) { driver =>
    Using(driver.session()) { session =>
      val query    = "MATCH (n)-[r]->() RETURN n,r"
      val response = session.run(query)
      val results  = response.list().asScala.map(r => (r.get("n").asNode(), r.get("r").asRelationship()))
      results.foreach { (node, relation) =>
        println("---------------------------------")
        println(s"node labels = ${node.labels().asScala.mkString(",")}")
        println(s"node elementId = ${node.elementId()}")
        println(s"node fields = ${node.asMap().asScala}")
        println(s"relationship type = ${relation.`type`()}")
        println(s"relationship elementId = ${relation.elementId()}")
        println(s"relationship startNodeElementId = ${relation.startNodeElementId()}")
        println(s"relationship endNodeElementId = ${relation.endNodeElementId()}")
        println(s"relationship fields = ${relation.asMap().asScala}")
      }
    }.tap(r => println(r))
  }.tap(r => println(r))
}.tap(r => println(r))