Neo4j Typed Traverser Examples using the REST interface

gistfile1.scala

{

  {

      /**
       * follow list of nodes with relations BOTH "KNOWS" and OUT "CODED_BY"
       */
      val erg = startNodes.doTraverse[Test_MatrixBase](follow -- "KNOWS" ->- "CODED_BY") {
        /**
         * prune evaluator is Java Script and returns false
         */
        PruneEvaluator("false")
      } {
        /**
         * Return filter (running on client side)
         */
        case (x: Test_Matrix, tp) if (tp.depth == 3) => x.name.length > 2
        case (x: Test_NonMatrix, _) => false

        /**
         * converted to List[Test_MatrixBase]
         */
      }.toList.sortWith(_.name < _.name)

    }


   {
      val erg = nodeMap("Neo").doTraverse[Test_MatrixBase](follow(BREADTH_FIRST) -- "KNOWS" ->- "CODED_BY" -<- "FOO") {

        /**
         * using prune eval as Java Script code
         */
        "position.length() > 100;"
      } {
        case (x: Test_Matrix, tp) if (tp.depth == 2) => x.name.length > 2
        case (x: Test_NonMatrix, _) => false
      }.toList.sortWith(_.name < _.name)

    }


    {

      /**
       * setting max depth to 100 instead of prune evaluator
       */
      val erg = nodeMap("Neo").doTraverse[Test_MatrixBase](follow(BREADTH_FIRST) -- "KNOWS" ->- "CODED_BY")(100) {
        case (x: Test_Matrix, tp) if (tp.depth == 2) => x.name.length > 2
      }.toList.sortWith(_.name < _.name)

    }


    {

      /**
       * set max depth to 1 and using builtin ReturnAllButStartNode function
       */
      val erg = nodeMap("Neo").
        doTraverse[Test_MatrixBase](follow(BREADTH_FIRST) -- "KNOWS" ->- "CODED_BY", 1, ReturnAllButStartNode).
        toList.sortWith(_.name < _.name)

    }


   {

      /**
       * set max depth to 1 and using Java Script "true" code
       */
      val erg = nodeMap("Neo").
        doTraverse[Test_MatrixBase](follow(BREADTH_FIRST) -- "KNOWS" ->- "CODED_BY", 1, "true").
        toList.sortWith(_.name < _.name)

    }


   {

      /**
       * server side type check with endNode.isOfType[Test_Matrix] that created Java Script code
       */
      val erg = nodeMap("Neo").doTraverse[Test_MatrixBase](follow(BREADTH_FIRST) -- "KNOWS" ->- "CODED_BY", 1,
        endNode.instanceof[Test_Matrix]
      ).toList.sortWith(_.name < _.name)

    }
  }