Scala + Neo4j + Blueprints

scala-neo4j-blueprints.scala

import com.tinkerpop.blueprints.Graph
import com.tinkerpop.blueprints.impls.neo4j.Neo4jGraph
import com.tinkerpop.blueprints.Vertex
import com.tinkerpop.blueprints.Edge
import java.util.Iterator
import com.tinkerpop.blueprints.Direction

object BlueprintsNeo4j {
  def main(args: Array[String]): Unit = {
    val graph : Graph = new Neo4jGraph("tmp/graph")
    val a : Vertex = graph.addVertex()
    val b : Vertex = graph.addVertex()
    a.setProperty("name", "Marko")
    b.setProperty("name", "Polo")
    val e : Edge = graph.addEdge(null, a, b, "knows")
    e.setProperty("since", 2006)
    
    val it = a.getEdges(Direction.BOTH).iterator();
    
    while(it.hasNext()) {
      val edge : Edge = it.next()
      val v1 : Vertex = edge.getVertex(Direction.IN)
      val v2 : Vertex = edge.getVertex(Direction.OUT)
      println(v1.getProperty("name") + " knows " + v2.getProperty("name") + " since " + edge.getProperty("since"))
    }
  }
}