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Posted to commits@s2graph.apache.org by st...@apache.org on 2017/07/01 15:28:13 UTC

[22/46] incubator-s2graph git commit: [SerializationTest] passed all, GryoTest.shouldSerializeTree failed.

[SerializationTest] passed all, GryoTest.shouldSerializeTree failed.


Project: http://git-wip-us.apache.org/repos/asf/incubator-s2graph/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-s2graph/commit/a9c50168
Tree: http://git-wip-us.apache.org/repos/asf/incubator-s2graph/tree/a9c50168
Diff: http://git-wip-us.apache.org/repos/asf/incubator-s2graph/diff/a9c50168

Branch: refs/heads/master
Commit: a9c50168979bacb7e40c3acf32d387a1d3fae33b
Parents: 9d175a7
Author: DO YUNG YOON <st...@apache.org>
Authored: Thu Apr 27 19:47:50 2017 +0900
Committer: DO YUNG YOON <st...@apache.org>
Committed: Thu Apr 27 19:47:50 2017 +0900

----------------------------------------------------------------------
 .../s2graph/core/io/S2GraphSimpleModule.java    | 118 ++++++++++++++++++
 .../scala/org/apache/s2graph/core/S2Edge.scala  |  41 ++++---
 .../scala/org/apache/s2graph/core/S2Graph.scala | 105 +++-------------
 .../apache/s2graph/core/S2GraphIoRegistry.scala |  58 +++++++++
 .../apache/s2graph/core/S2VertexProperty.scala  |  12 +-
 .../apache/s2graph/core/io/Conversions.scala    | 123 +++++++++++++++++++
 .../apache/s2graph/core/mysqls/ColumnMeta.scala |  16 +--
 .../apache/s2graph/core/mysqls/Service.scala    |  10 +-
 .../s2graph/core/mysqls/ServiceColumn.scala     |  25 ++--
 .../s2graph/core/types/InnerValLike.scala       |   1 -
 .../apache/s2graph/core/types/VertexId.scala    |  23 +++-
 .../apache/s2graph/core/io/ConversionTest.scala | 115 +++++++++++++++++
 .../core/tinkerpop/S2GraphProvider.scala        |   8 +-
 13 files changed, 515 insertions(+), 140 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/java/org/apache/s2graph/core/io/S2GraphSimpleModule.java
----------------------------------------------------------------------
diff --git a/s2core/src/main/java/org/apache/s2graph/core/io/S2GraphSimpleModule.java b/s2core/src/main/java/org/apache/s2graph/core/io/S2GraphSimpleModule.java
new file mode 100644
index 0000000..e1c1741
--- /dev/null
+++ b/s2core/src/main/java/org/apache/s2graph/core/io/S2GraphSimpleModule.java
@@ -0,0 +1,118 @@
+package org.apache.s2graph.core.io;
+
+
+import org.apache.s2graph.core.EdgeId;
+import org.apache.s2graph.core.S2VertexPropertyId;
+import org.apache.s2graph.core.types.VertexId;
+import org.apache.tinkerpop.shaded.jackson.core.JsonGenerator;
+import org.apache.tinkerpop.shaded.jackson.core.JsonParser;
+import org.apache.tinkerpop.shaded.jackson.core.JsonProcessingException;
+import org.apache.tinkerpop.shaded.jackson.databind.*;
+import org.apache.tinkerpop.shaded.jackson.databind.jsontype.TypeDeserializer;
+import org.apache.tinkerpop.shaded.jackson.databind.jsontype.TypeSerializer;
+import org.apache.tinkerpop.shaded.jackson.databind.module.SimpleModule;
+import java.io.IOException;
+
+public class S2GraphSimpleModule extends SimpleModule {
+    private S2GraphSimpleModule() {
+        addSerializer(EdgeId.class, new EdgeIdSerializer());
+        addSerializer(VertexId.class, new VertexIdSerializer());
+        addSerializer(S2VertexPropertyId.class, new S2VertexPropertyIdSerializer());
+
+        addDeserializer(EdgeId.class, new EdgeIdDeserializer());
+        addDeserializer(VertexId.class, new VertexIdDeserializer());
+        addDeserializer(S2VertexPropertyId.class, new S2VertexPropertyIdDeserializer());
+    }
+
+    private static final S2GraphSimpleModule INSTANCE = new S2GraphSimpleModule();
+
+    public static final S2GraphSimpleModule getInstance() {
+        return INSTANCE;
+    }
+
+    public static class EdgeIdSerializer extends JsonSerializer<EdgeId> {
+
+        @Override
+        public void serialize(EdgeId edgeId, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
+            String s = edgeId.toString();
+            jsonGenerator.writeString(s);
+        }
+
+        @Override
+        public void serializeWithType(EdgeId value, JsonGenerator gen, SerializerProvider serializers, TypeSerializer typeSer) throws IOException {
+            typeSer.writeCustomTypePrefixForScalar(value, gen, EdgeId.class.getName());
+            serialize(value, gen, serializers);
+            typeSer.writeCustomTypeSuffixForScalar(value, gen, EdgeId.class.getName());
+        }
+    }
+    public static class EdgeIdDeserializer extends JsonDeserializer<EdgeId> {
+        @Override
+        public EdgeId deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
+            String s = jsonParser.getValueAsString();
+            return EdgeId.fromString(s);
+        }
+
+        @Override
+        public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException {
+            return typeDeserializer.deserializeTypedFromScalar(p, ctxt);
+        }
+    }
+    public static class VertexIdSerializer extends JsonSerializer<VertexId> {
+
+        @Override
+        public void serialize(VertexId vertexId, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
+            String s = vertexId.toString();
+            jsonGenerator.writeString(s);
+        }
+
+        @Override
+        public void serializeWithType(VertexId value, JsonGenerator gen, SerializerProvider serializers, TypeSerializer typeSer) throws IOException {
+            typeSer.writeCustomTypePrefixForScalar(value, gen, VertexId.class.getName());
+            serialize(value, gen, serializers);
+            typeSer.writeCustomTypeSuffixForScalar(value, gen, VertexId.class.getName());
+        }
+    }
+    public static class VertexIdDeserializer extends JsonDeserializer<VertexId> {
+
+        @Override
+        public VertexId deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
+            String s = jsonParser.getValueAsString();
+            return VertexId.fromString(s);
+        }
+
+        @Override
+        public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException {
+            return typeDeserializer.deserializeTypedFromScalar(p, ctxt);
+        }
+    }
+    public static class S2VertexPropertyIdSerializer extends JsonSerializer<S2VertexPropertyId> {
+
+        @Override
+        public void serialize(S2VertexPropertyId s2VertexPropertyId, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
+            jsonGenerator.writeString(s2VertexPropertyId.toString());
+        }
+
+        @Override
+        public void serializeWithType(S2VertexPropertyId value,
+                                      JsonGenerator gen,
+                                      SerializerProvider serializers, TypeSerializer typeSer) throws IOException {
+
+            typeSer.writeCustomTypePrefixForScalar(value, gen, S2VertexPropertyId.class.getName());
+            serialize(value, gen, serializers);
+            typeSer.writeCustomTypeSuffixForScalar(value, gen, S2VertexPropertyId.class.getName());
+        }
+    }
+    public static class S2VertexPropertyIdDeserializer extends JsonDeserializer<S2VertexPropertyId> {
+
+        @Override
+        public S2VertexPropertyId deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
+            return S2VertexPropertyId.fromString(jsonParser.getValueAsString());
+        }
+
+        @Override
+        public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException {
+            return typeDeserializer.deserializeTypedFromScalar(p, ctxt);
+        }
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/S2Edge.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/S2Edge.scala b/s2core/src/main/scala/org/apache/s2graph/core/S2Edge.scala
index edb3783..e6da0bb 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/S2Edge.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/S2Edge.scala
@@ -28,6 +28,7 @@ import org.apache.s2graph.core.JSONParser._
 import org.apache.s2graph.core.mysqls.{Label, LabelIndex, LabelMeta, ServiceColumn}
 import org.apache.s2graph.core.types._
 import org.apache.s2graph.core.utils.logger
+import org.apache.s2graph.core.io.Conversions._
 import org.apache.tinkerpop.gremlin.structure
 import org.apache.tinkerpop.gremlin.structure.util.StringFactory
 import org.apache.tinkerpop.gremlin.structure.{Direction, Edge, Graph, Property, T, Vertex}
@@ -701,22 +702,34 @@ case class S2Edge(innerGraph: S2Graph,
 object EdgeId {
   val EdgeIdDelimiter = ","
   def fromString(s: String): EdgeId = {
-    val Array(src, tgt, labelName, dir, ts) = s.split(EdgeIdDelimiter)
-    val label = Label.findByName(labelName).getOrElse(throw LabelNotExistException(labelName))
-    val srcColumn = label.srcColumnWithDir(GraphUtil.toDirection(dir))
-    val tgtColumn = label.tgtColumnWithDir(GraphUtil.toDirection(dir))
-    EdgeId(
-      JSONParser.toInnerVal(src, srcColumn.columnType, label.schemaVersion),
-      JSONParser.toInnerVal(tgt, tgtColumn.columnType, label.schemaVersion),
-      labelName,
-      dir,
-      ts.toLong
-    )
+//    val Array(src, tgt, labelName, dir, ts) = s.split(EdgeIdDelimiter)
+//    val label = Label.findByName(labelName).getOrElse(throw LabelNotExistException(labelName))
+//    val srcColumn = label.srcColumnWithDir(GraphUtil.toDirection(dir))
+//    val tgtColumn = label.tgtColumnWithDir(GraphUtil.toDirection(dir))
+//    EdgeId(
+//      JSONParser.toInnerVal(src, srcColumn.columnType, label.schemaVersion),
+//      JSONParser.toInnerVal(tgt, tgtColumn.columnType, label.schemaVersion),
+//      labelName,
+//      dir,
+//      ts.toLong
+//    )
+    val js = Json.parse(s)
+    s2EdgeIdReads.reads(Json.parse(s)).get
   }
 }
-case class EdgeId(srcVertexId: InnerValLike, tgtVertexId: InnerValLike, labelName: String, direction: String, ts: Long) {
-  override def toString: String =
-    Seq(srcVertexId.toIdString(), tgtVertexId.toIdString(), labelName, direction, ts.toString).mkString(EdgeId.EdgeIdDelimiter)
+
+case class EdgeId(srcVertexId: InnerValLike,
+                  tgtVertexId: InnerValLike,
+                  labelName: String,
+                  direction: String,
+                  ts: Long) {
+  override def toString: String = {
+    import io.Conversions._
+    //    Seq(srcVertexId.toIdString(), tgtVertexId.toIdString(), labelName, direction, ts.toString).mkString(EdgeId.EdgeIdDelimiter)
+    s2EdgeIdWrites.writes(this).toString()
+  }
+
+
 
 }
 

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/S2Graph.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/S2Graph.scala b/s2core/src/main/scala/org/apache/s2graph/core/S2Graph.scala
index a45d080..2635eba 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/S2Graph.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/S2Graph.scala
@@ -36,8 +36,8 @@ import org.apache.s2graph.core.utils.{DeferCache, Extensions, logger}
 import org.apache.tinkerpop.gremlin.process.computer.GraphComputer
 import org.apache.tinkerpop.gremlin.structure
 import org.apache.tinkerpop.gremlin.structure.Graph.{Features, Variables}
-import org.apache.tinkerpop.gremlin.structure.util.ElementHelper
-import org.apache.tinkerpop.gremlin.structure.{Edge, Element, Graph, Property, T, Transaction, Vertex}
+import org.apache.tinkerpop.gremlin.structure.io.{GraphReader, GraphWriter, Io, Mapper}
+import org.apache.tinkerpop.gremlin.structure.{Edge, Element, Graph, T, Transaction, Vertex}
 import play.api.libs.json.{JsObject, Json}
 
 import scala.annotation.tailrec
@@ -584,10 +584,8 @@ object S2Graph {
 //  new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceVertexTest", method="*", reason="no"),
   // passed: all, failed: none, all ignored
 
-  // not yet supported
-//  new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.VariablesTest", method="*", reason="no"), // all failed since implementation is missing.
-  new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.SerializationTest", method="*", reason="no"), // 10/16 failed.
-  new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.TransactionTest", method="*", reason="no"), // all ignored since supportTransaction is false.
+  new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.SerializationTest$GryoTest", method="shouldSerializeTree", reason="order of children is reversed. not sure why."),
+  // passed: all, failed: $GryoTest.shouldSerializeTree
 
 
   new Graph.OptOut(test="org.apache.tinkerpop.gremlin.structure.io.IoCustomTest", method="*", reason="no"), // all ignored.
@@ -1403,58 +1401,6 @@ class S2Graph(_config: Config)(implicit val ec: ExecutionContext) extends Graph
     S2Edge.fillPropsWithTs(snapshotEdge, propsWithTs)
     snapshotEdge
   }
-//
-//  /**
-//   * internal helper to actually store a single edge based on given peramters.
-//   *
-//   * Note that this is used from S2Vertex to implement blocking interface from Tp3.
-//   * Once tp3 provide AsyncStep, then this can be changed to return Java's CompletableFuture.
-//   *
-//   * @param srcVertex
-//   * @param tgtVertex
-//   * @param labelName
-//   * @param direction
-//   * @param props
-//   * @param ts
-//   * @param operation
-//   * @return
-//   */
-//  private[core] def addEdgeInner(srcVertex: S2Vertex,
-//                                 tgtVertex: S2Vertex,
-//                                 labelName: String,
-//                                 direction: String = "out",
-//                                 props: Map[String, AnyRef] = Map.empty,
-//                                 ts: Long = System.currentTimeMillis(),
-//                                 operation: String = "insert"): S2Edge = {
-//    Await.result(addEdgeInnerAsync(srcVertex, tgtVertex, labelName, direction, props, ts, operation), WaitTimeout)
-//  }
-//
-//  private[core] def addEdgeInnerAsync(srcVertex: S2Vertex,
-//                                      tgtVertex: S2Vertex,
-//                                      labelName: String,
-//                                      direction: String = "out",
-//                                      props: Map[String, AnyRef] = Map.empty,
-//                                      ts: Long = System.currentTimeMillis(),
-//                                      operation: String = "insert"): Future[S2Edge] = {
-//    // Validations on input parameter
-//    val label = Label.findByName(labelName).getOrElse(throw new LabelNotExistException(labelName))
-//    val dir = GraphUtil.toDir(direction).getOrElse(throw new RuntimeException(s"$direction is not supported."))
-////    if (srcVertex.id.column != label.srcColumnWithDir(dir)) throw new RuntimeException(s"srcVertex's column[${srcVertex.id.column}] is not matched to label's srcColumn[${label.srcColumnWithDir(dir)}")
-////    if (tgtVertex.id.column != label.tgtColumnWithDir(dir)) throw new RuntimeException(s"tgtVertex's column[${tgtVertex.id.column}] is not matched to label's tgtColumn[${label.tgtColumnWithDir(dir)}")
-//
-//    // Convert given Map[String, AnyRef] property into internal class.
-//    val propsPlusTs = props ++ Map(LabelMeta.timestamp.name -> ts)
-//    val propsWithTs = label.propsToInnerValsWithTs(propsPlusTs, ts)
-//    val op = GraphUtil.toOp(operation).getOrElse(throw new RuntimeException(s"$operation is not supported."))
-//
-//    val edge = newEdge(srcVertex, tgtVertex, label, dir, op = op, version = ts, propsWithTs = propsWithTs)
-//    // store edge into storage withWait option.
-//    mutateEdges(Seq(edge), withWait = true).map { rets =>
-//      if (!rets.headOption.getOrElse(false)) throw new RuntimeException("add edge failed.")
-//      else edge
-//    }
-//  }
-
 
   def newVertexId(serviceName: String)(columnName: String)(id: Any): VertexId = {
     val service = Service.findByName(serviceName).getOrElse(throw new RuntimeException(s"$serviceName is not found."))
@@ -1511,41 +1457,27 @@ class S2Graph(_config: Config)(implicit val ec: ExecutionContext) extends Graph
 
   /**
    * used by graph.traversal().V()
-   * @param vertexIds: array of VertexId values. note that last parameter can be used to control if actually fetch vertices from storage or not.
+   * @param ids: array of VertexId values. note that last parameter can be used to control if actually fetch vertices from storage or not.
    *                 since S2Graph use user-provided id as part of edge, it is possible to
    *                 fetch edge without fetch start vertex. default is false which means we are not fetching vertices from storage.
    * @return
    */
-  override def vertices(vertexIds: AnyRef*): util.Iterator[structure.Vertex] = {
-    val fetchVertices = vertexIds.lastOption.map { lastParam =>
+  override def vertices(ids: AnyRef*): util.Iterator[structure.Vertex] = {
+    val fetchVertices = ids.lastOption.map { lastParam =>
       if (lastParam.isInstanceOf[Boolean]) lastParam.asInstanceOf[Boolean]
       else true
     }.getOrElse(true)
 
-    if (vertexIds.isEmpty) {
+    if (ids.isEmpty) {
       //TODO: default storage need to be fixed.
       Await.result(defaultStorage.fetchVerticesAll(), WaitTimeout).iterator
     } else {
-      val (vIds, stringIds) = vertexIds.partition(_.isInstanceOf[VertexId])
-      val verticesFromIds = vIds.map(vertexId => newVertex(vertexId.asInstanceOf[VertexId]))
-      val verticesFromString = stringIds.flatMap { vId =>
-        if (vId.toString.contains(S2Vertex.VertexLabelDelimiter)) {
-          val Array(serviceName, columnName, id) =
-            if (vId.toString.take(2).mkString("") == "v[") vId.toString.drop(2).init.split(S2Vertex.VertexLabelDelimiter)
-            else {
-              if (vId.toString.contains(S2Vertex.VertexLabelDelimiter)) {
-                vId.toString.split(S2Vertex.VertexLabelDelimiter)
-              } else {
-                Array(DefaultService.serviceName, DefaultColumn.columnName, vId.toString)
-              }
-            }
-
-          Seq(toVertex(serviceName, columnName, id))
-        } else {
-          Nil
-        }
+      val vertices = ids.collect {
+        case s2Vertex: S2Vertex => s2Vertex
+        case vId: VertexId => newVertex(vId)
+        case vertex: Vertex => newVertex(vertex.id().asInstanceOf[VertexId])
+        case other @ _ => newVertex(VertexId.fromString(other.toString))
       }
-      val vertices = verticesFromIds ++ verticesFromString
 
       if (fetchVertices) {
         val future = getVertices(vertices).map { vs =>
@@ -1574,6 +1506,7 @@ class S2Graph(_config: Config)(implicit val ec: ExecutionContext) extends Graph
       case s2Edge: S2Edge => s2Edge.id().asInstanceOf[EdgeId]
       case id: EdgeId => id
       case s: String => EdgeId.fromString(s)
+      case s: java.lang.String => EdgeId.fromString(s)
     }
     val edgesToFetch = for {
       id <- s2EdgeIds
@@ -1592,7 +1525,7 @@ class S2Graph(_config: Config)(implicit val ec: ExecutionContext) extends Graph
     ???
   }
 
-  override def variables(): Variables = new S2GraphVariables()
+  override def variables(): Variables = new S2GraphVariables
 
   override def configuration(): Configuration = apacheConfiguration
 
@@ -1705,10 +1638,10 @@ class S2Graph(_config: Config)(implicit val ec: ExecutionContext) extends Graph
 
   override def toString(): String = "[s2graph]"
 
-//  override def io[I <: Io[_ <: GraphReader.ReaderBuilder[_ <: GraphReader], _ <: GraphWriter.WriterBuilder[_ <: GraphWriter], _ <: Mapper.Builder[_]]](builder: Io.Builder[I]): I = {
-//    builder.graph(this).registry(new S2GraphIoRegistry).create().asInstanceOf[I]
-//
-//  }
+  override def io[I <: Io[_ <: GraphReader.ReaderBuilder[_ <: GraphReader], _ <: GraphWriter.WriterBuilder[_ <: GraphWriter], _ <: Mapper.Builder[_]]](builder: Io.Builder[I]): I = {
+    builder.graph(this).registry(new S2GraphIoRegistry).create().asInstanceOf[I]
+
+  }
 
 
 }

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/S2GraphIoRegistry.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/S2GraphIoRegistry.scala b/s2core/src/main/scala/org/apache/s2graph/core/S2GraphIoRegistry.scala
new file mode 100644
index 0000000..1b25928
--- /dev/null
+++ b/s2core/src/main/scala/org/apache/s2graph/core/S2GraphIoRegistry.scala
@@ -0,0 +1,58 @@
+package org.apache.s2graph.core
+
+
+import org.apache.s2graph.core.io.S2GraphSimpleModule
+import org.apache.s2graph.core.types.VertexId
+import org.apache.tinkerpop.gremlin.structure.io.AbstractIoRegistry
+import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONIo
+import org.apache.tinkerpop.gremlin.structure.io.gryo.GryoIo
+import org.apache.tinkerpop.shaded.kryo.io.{Input, Output}
+import org.apache.tinkerpop.shaded.kryo.{Kryo, Serializer}
+
+object S2GraphIoRegistry {
+  lazy val instance = new S2GraphIoRegistry
+}
+
+class S2GraphIoRegistry extends AbstractIoRegistry {
+
+  //  val simpleModule = new S2GraphSimpleModule
+  register(classOf[GraphSONIo], null, S2GraphSimpleModule.getInstance())
+  //  register(classOf[GraphSONIo], null, simpleModule)
+
+  register(classOf[GryoIo], classOf[S2VertexPropertyId], new S2VertexPropertyIdKryoSerializer)
+  register(classOf[GryoIo], classOf[VertexId], new VertexIdKryoSerializer)
+  register(classOf[GryoIo], classOf[EdgeId], new EdgeIdKryoSerializer)
+
+  class S2VertexPropertyIdKryoSerializer extends Serializer[S2VertexPropertyId] {
+    override def read(kryo: Kryo, input: Input, aClass: Class[S2VertexPropertyId]): S2VertexPropertyId = {
+      S2VertexPropertyId.fromString(input.readString())
+    }
+
+    override def write(kryo: Kryo, output: Output, t: S2VertexPropertyId): Unit = {
+      output.writeString(t.toString)
+    }
+  }
+
+  class VertexIdKryoSerializer extends Serializer[VertexId] {
+    override def read(kryo: Kryo, input: Input, aClass: Class[VertexId]): VertexId = {
+      VertexId.fromString(input.readString())
+    }
+
+    override def write(kryo: Kryo, output: Output, t: VertexId): Unit = {
+      output.writeString(t.toString())
+    }
+  }
+
+
+  class EdgeIdKryoSerializer extends Serializer[EdgeId] {
+    override def read(kryo: Kryo, input: Input, aClass: Class[EdgeId]): EdgeId = {
+      EdgeId.fromString(input.readString())
+    }
+
+    override def write(kryo: Kryo, output: Output, t: EdgeId): Unit = {
+      output.writeString(t.toString)
+    }
+  }
+
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/S2VertexProperty.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/S2VertexProperty.scala b/s2core/src/main/scala/org/apache/s2graph/core/S2VertexProperty.scala
index 84e6de7..d0b56a0 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/S2VertexProperty.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/S2VertexProperty.scala
@@ -24,8 +24,18 @@ import java.util
 import org.apache.s2graph.core.mysqls.ColumnMeta
 import org.apache.s2graph.core.types.{CanInnerValLike, InnerValLike}
 import org.apache.tinkerpop.gremlin.structure.{Property, VertexProperty}
+import play.api.libs.json.Json
 
-case class S2VertexPropertyId(columnMeta: ColumnMeta, value: InnerValLike)
+object S2VertexPropertyId {
+  def fromString(s: String): S2VertexPropertyId = {
+    io.Conversions.s2VertexPropertyIdReads.reads(Json.parse(s)).get
+  }
+}
+case class S2VertexPropertyId(columnMeta: ColumnMeta, value: InnerValLike) {
+  override def toString: String = {
+    io.Conversions.s2VertexPropertyIdWrites.writes(this).toString()
+  }
+}
 
 case class S2VertexProperty[V](element: S2Vertex,
                                columnMeta: ColumnMeta,

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/io/Conversions.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/io/Conversions.scala b/s2core/src/main/scala/org/apache/s2graph/core/io/Conversions.scala
new file mode 100644
index 0000000..f9cc861
--- /dev/null
+++ b/s2core/src/main/scala/org/apache/s2graph/core/io/Conversions.scala
@@ -0,0 +1,123 @@
+package org.apache.s2graph.core.io
+
+import org.apache.s2graph.core.{EdgeId, JSONParser, S2VertexPropertyId}
+import org.apache.s2graph.core.mysqls.{ColumnMeta, Service, ServiceColumn}
+import org.apache.s2graph.core.types.{InnerValLike, VertexId}
+import play.api.libs.json._
+import play.api.libs.json.Reads._
+import play.api.libs.json.Writes._
+import play.api.libs.functional.syntax._
+
+object Conversions {
+  /* Serializer for inner value class */
+  implicit object InnerValLikeReads extends Reads[InnerValLike] {
+    def reads(json: JsValue) = {
+      val value = (json \ "value").as[JsValue]
+      val dataType = (json \ "dataType").as[String]
+      val schemaVersion = (json \ "schemaVersion").as[String]
+      val innerVal = JSONParser.jsValueToInnerVal(value, dataType, schemaVersion).get
+      JsSuccess(innerVal)
+    }
+  }
+  implicit object InnerValLikeWrites extends Writes[InnerValLike] {
+    override def writes(o: InnerValLike): JsValue = {
+      Json.obj("value" -> JSONParser.anyValToJsValue(o.value),
+        "dataType" -> o.dataType,
+        "schemaVersion" -> o.schemaVersion)
+    }
+  }
+
+  /* Serializer for Models */
+
+  implicit val serviceReads: Reads[Service] = (
+    (JsPath \ "id").readNullable[Int] and
+      (JsPath \ "serviceName").read[String] and
+      (JsPath \ "accessToken").read[String] and
+      (JsPath \ "cluster").read[String] and
+      (JsPath \ "hTableName").read[String] and
+      (JsPath \ "preSplitSize").read[Int] and
+      (JsPath \ "hTableTTL").readNullable[Int] and
+      (JsPath \ "options").readNullable[String]
+    )(Service.apply _)
+
+  implicit val serviceWrites: Writes[Service] = (
+    (JsPath \ "id").writeNullable[Int] and
+      (JsPath \ "serviceName").write[String] and
+      (JsPath \ "accessToken").write[String] and
+      (JsPath \ "cluster").write[String] and
+      (JsPath \ "hTableName").write[String] and
+      (JsPath \ "preSplitSize").write[Int] and
+      (JsPath \ "hTableTTL").writeNullable[Int] and
+      (JsPath \ "options").writeNullable[String]
+    )(unlift(Service.unapply))
+
+  implicit val serviceColumnReads: Reads[ServiceColumn] = (
+    (JsPath \ "id").readNullable[Int] and
+      (JsPath \ "serviceId").read[Int] and
+      (JsPath \ "columnName").read[String] and
+      (JsPath \ "columnType").read[String] and
+      (JsPath \ "schemaVersion").read[String]
+    )(ServiceColumn.apply _)
+
+  implicit val serviceColumnWrites: Writes[ServiceColumn] = (
+    (JsPath \ "id").writeNullable[Int] and
+      (JsPath \ "serviceId").write[Int] and
+      (JsPath \ "columnName").write[String] and
+      (JsPath \ "columnType").write[String] and
+      (JsPath \ "schemaVersion").write[String]
+    )(unlift(ServiceColumn.unapply))
+
+  implicit val columnMetaReads: Reads[ColumnMeta] = (
+    (JsPath \ "id").readNullable[Int] and
+      (JsPath \ "columnId").read[Int] and
+      (JsPath \ "name").read[String] and
+      (JsPath \ "seq").read[Byte] and
+      (JsPath \ "dataType").read[String]
+    )(ColumnMeta.apply _)
+
+  implicit val columnMetaWrites: Writes[ColumnMeta] = (
+    (JsPath \ "id").writeNullable[Int] and
+      (JsPath \ "columnId").write[Int] and
+      (JsPath \ "name").write[String] and
+      (JsPath \ "seq").write[Byte] and
+      (JsPath \ "dataType").write[String]
+    )(unlift(ColumnMeta.unapply))
+
+  /* Graph Class */
+  implicit val s2VertexPropertyIdReads: Reads[S2VertexPropertyId] = (
+    (JsPath \ "column").read[ColumnMeta] and
+      (JsPath \ "value").read[InnerValLike]
+    )(S2VertexPropertyId.apply _)
+
+  implicit val s2VertexPropertyIdWrites: Writes[S2VertexPropertyId] = (
+    (JsPath \ "column").write[ColumnMeta] and
+      (JsPath \ "value").write[InnerValLike]
+    )(unlift(S2VertexPropertyId.unapply))
+
+  implicit val s2VertexIdReads: Reads[VertexId] = (
+    (JsPath \ "column").read[ServiceColumn] and
+      (JsPath \ "value").read[InnerValLike]
+    )(VertexId.apply _)
+
+  implicit val s2VertexIdWrites: Writes[VertexId] = (
+    (JsPath \ "column").write[ServiceColumn] and
+      (JsPath \ "value").write[InnerValLike]
+    )(unlift(VertexId.unapply))
+
+  implicit val s2EdgeIdReads: Reads[EdgeId] = (
+    (JsPath \ "srcVertexId").read[InnerValLike] and
+      (JsPath \ "tgtVertexId").read[InnerValLike] and
+      (JsPath \ "labelName").read[String] and
+      (JsPath \ "direction").read[String] and
+      (JsPath \ "ts").read[Long]
+    )(EdgeId.apply _)
+
+  implicit val s2EdgeIdWrites: Writes[EdgeId] = (
+    (JsPath \ "srcVertexId").write[InnerValLike] and
+      (JsPath \ "tgtVertexId").write[InnerValLike] and
+      (JsPath \ "labelName").write[String] and
+      (JsPath \ "direction").write[String] and
+      (JsPath \ "ts").write[Long]
+    )(unlift(EdgeId.unapply))
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ColumnMeta.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ColumnMeta.scala b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ColumnMeta.scala
index a92c93b..14ad381 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ColumnMeta.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ColumnMeta.scala
@@ -33,7 +33,7 @@ object ColumnMeta extends Model[ColumnMeta] {
   val reservedMetas = Seq(timestamp, lastModifiedAtColumn)
   val reservedMetaNamesSet = reservedMetas.map(_.name).toSet
 
-  def apply(rs: WrappedResultSet): ColumnMeta = {
+  def valueOf(rs: WrappedResultSet): ColumnMeta = {
     ColumnMeta(Some(rs.int("id")), rs.int("column_id"), rs.string("name"), rs.byte("seq"), rs.string("data_type").toLowerCase())
   }
 
@@ -41,7 +41,7 @@ object ColumnMeta extends Model[ColumnMeta] {
     //    val cacheKey = s"id=$id"
     val cacheKey = "id=" + id
     withCache(cacheKey) {
-      sql"""select * from column_metas where id = ${id}""".map { rs => ColumnMeta(rs) }.single.apply
+      sql"""select * from column_metas where id = ${id}""".map { rs => ColumnMeta.valueOf(rs) }.single.apply
     }.get
   }
 
@@ -50,10 +50,10 @@ object ColumnMeta extends Model[ColumnMeta] {
     val cacheKey = "columnId=" + columnId
     if (useCache) {
       withCaches(cacheKey)( sql"""select *from column_metas where column_id = ${columnId} order by seq ASC"""
-        .map { rs => ColumnMeta(rs) }.list.apply())
+        .map { rs => ColumnMeta.valueOf(rs) }.list.apply())
     } else {
       sql"""select * from column_metas where column_id = ${columnId} order by seq ASC"""
-        .map { rs => ColumnMeta(rs) }.list.apply()
+        .map { rs => ColumnMeta.valueOf(rs) }.list.apply()
     }
   }
 
@@ -62,10 +62,10 @@ object ColumnMeta extends Model[ColumnMeta] {
     val cacheKey = "columnId=" + columnId + ":name=" + name
     if (useCache) {
       withCache(cacheKey)( sql"""select * from column_metas where column_id = ${columnId} and name = ${name}"""
-          .map { rs => ColumnMeta(rs) }.single.apply())
+          .map { rs => ColumnMeta.valueOf(rs) }.single.apply())
     } else {
       sql"""select * from column_metas where column_id = ${columnId} and name = ${name}"""
-          .map { rs => ColumnMeta(rs) }.single.apply()
+          .map { rs => ColumnMeta.valueOf(rs) }.single.apply()
     }
   }
 
@@ -93,7 +93,7 @@ object ColumnMeta extends Model[ColumnMeta] {
     val cacheKey = "columnId=" + columnId + ":seq=" + seq
     lazy val columnMetaOpt = sql"""
         select * from column_metas where column_id = ${columnId} and seq = ${seq}
-    """.map { rs => ColumnMeta(rs) }.single.apply()
+    """.map { rs => ColumnMeta.valueOf(rs) }.single.apply()
 
     if (useCache) withCache(cacheKey)(columnMetaOpt)
     else columnMetaOpt
@@ -111,7 +111,7 @@ object ColumnMeta extends Model[ColumnMeta] {
   }
 
   def findAll()(implicit session: DBSession = AutoSession) = {
-    val ls = sql"""select * from column_metas""".map { rs => ColumnMeta(rs) }.list().apply()
+    val ls = sql"""select * from column_metas""".map { rs => ColumnMeta.valueOf(rs) }.list().apply()
 
     putsToCache(ls.map { x =>
       val cacheKey = s"id=${x.id.get}"

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/mysqls/Service.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/Service.scala b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/Service.scala
index 20330c4..e745cb0 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/Service.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/Service.scala
@@ -27,26 +27,26 @@ import play.api.libs.json.Json
 import scalikejdbc._
 
 object Service extends Model[Service] {
-  def apply(rs: WrappedResultSet): Service = {
+  def valueOf(rs: WrappedResultSet): Service = {
     Service(rs.intOpt("id"), rs.string("service_name"), rs.string("access_token"),
       rs.string("cluster"), rs.string("hbase_table_name"), rs.int("pre_split_size"), rs.intOpt("hbase_table_ttl"))
   }
 
   def findByAccessToken(accessToken: String)(implicit session: DBSession = AutoSession): Option[Service] = {
     val cacheKey = s"accessToken=$accessToken"
-    withCache(cacheKey)( sql"""select * from services where access_token = ${accessToken}""".map { rs => Service(rs) }.single.apply)
+    withCache(cacheKey)( sql"""select * from services where access_token = ${accessToken}""".map { rs => Service.valueOf(rs) }.single.apply)
   }
 
   def findById(id: Int)(implicit session: DBSession = AutoSession): Service = {
     val cacheKey = "id=" + id
-    withCache(cacheKey)( sql"""select * from services where id = ${id}""".map { rs => Service(rs) }.single.apply).get
+    withCache(cacheKey)( sql"""select * from services where id = ${id}""".map { rs => Service.valueOf(rs) }.single.apply).get
   }
 
   def findByName(serviceName: String, useCache: Boolean = true)(implicit session: DBSession = AutoSession): Option[Service] = {
     val cacheKey = "serviceName=" + serviceName
     lazy val serviceOpt = sql"""
         select * from services where service_name = ${serviceName}
-      """.map { rs => Service(rs) }.single.apply()
+      """.map { rs => Service.valueOf(rs) }.single.apply()
 
     if (useCache) withCache(cacheKey)(serviceOpt)
     else serviceOpt
@@ -85,7 +85,7 @@ object Service extends Model[Service] {
   }
 
   def findAll()(implicit session: DBSession = AutoSession) = {
-    val ls = sql"""select * from services""".map { rs => Service(rs) }.list.apply
+    val ls = sql"""select * from services""".map { rs => Service.valueOf(rs) }.list.apply
     putsToCache(ls.map { x =>
       val cacheKey = s"id=${x.id.get}"
       (cacheKey -> x)

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ServiceColumn.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ServiceColumn.scala b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ServiceColumn.scala
index 32ca653..be1ae9a 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ServiceColumn.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/mysqls/ServiceColumn.scala
@@ -19,37 +19,26 @@
 
 package org.apache.s2graph.core.mysqls
 
-/**
- * Created by shon on 6/3/15.
- */
-
-import org.apache.s2graph.core.JSONParser
 import org.apache.s2graph.core.JSONParser._
 import org.apache.s2graph.core.types.{HBaseType, InnerValLike, InnerValLikeWithTs}
-import org.apache.s2graph.core.utils.logger
 import play.api.libs.json.Json
 import scalikejdbc._
+
 object ServiceColumn extends Model[ServiceColumn] {
   val Default = ServiceColumn(Option(0), -1, "default", "string", "v4")
 
-  def apply(rs: WrappedResultSet): ServiceColumn = {
+  def valueOf(rs: WrappedResultSet): ServiceColumn = {
     ServiceColumn(rs.intOpt("id"), rs.int("service_id"), rs.string("column_name"), rs.string("column_type").toLowerCase(), rs.string("schema_version"))
   }
 
-//  def findByServiceAndColumn(serviceName: String,
-//                             columnName: String,
-//                             useCache: Boolean  = true)(implicit session: DBSession): Option[ServiceColumn] = {
-//    val service = Service.findByName(serviceName).getOrElse(throw new RuntimeException(s"$serviceName is not found."))
-//    find(service.id.get, columnName, useCache)
-//  }
 
   def findById(id: Int, useCache: Boolean = true)(implicit session: DBSession = AutoSession): ServiceColumn = {
     val cacheKey = "id=" + id
 
     if (useCache) {
-      withCache(cacheKey)(sql"""select * from service_columns where id = ${id}""".map { x => ServiceColumn(x) }.single.apply).get
+      withCache(cacheKey)(sql"""select * from service_columns where id = ${id}""".map { x => ServiceColumn.valueOf(x) }.single.apply).get
     } else {
-      sql"""select * from service_columns where id = ${id}""".map { x => ServiceColumn(x) }.single.apply.get
+      sql"""select * from service_columns where id = ${id}""".map { x => ServiceColumn.valueOf(x) }.single.apply.get
     }
   }
 
@@ -60,12 +49,12 @@ object ServiceColumn extends Model[ServiceColumn] {
       withCache(cacheKey) {
         sql"""
           select * from service_columns where service_id = ${serviceId} and column_name = ${columnName}
-        """.map { rs => ServiceColumn(rs) }.single.apply()
+        """.map { rs => ServiceColumn.valueOf(rs) }.single.apply()
       }
     } else {
       sql"""
         select * from service_columns where service_id = ${serviceId} and column_name = ${columnName}
-      """.map { rs => ServiceColumn(rs) }.single.apply()
+      """.map { rs => ServiceColumn.valueOf(rs) }.single.apply()
     }
   }
   def insert(serviceId: Int, columnName: String, columnType: Option[String], schemaVersion: String)(implicit session: DBSession = AutoSession) = {
@@ -94,7 +83,7 @@ object ServiceColumn extends Model[ServiceColumn] {
     }
   }
   def findAll()(implicit session: DBSession = AutoSession) = {
-    val ls = sql"""select * from service_columns""".map { rs => ServiceColumn(rs) }.list.apply
+    val ls = sql"""select * from service_columns""".map { rs => ServiceColumn.valueOf(rs) }.list.apply
     putsToCache(ls.map { x =>
       var cacheKey = s"id=${x.id.get}"
       (cacheKey -> x)

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/types/InnerValLike.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/types/InnerValLike.scala b/s2core/src/main/scala/org/apache/s2graph/core/types/InnerValLike.scala
index f653901..3f9e7b5 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/types/InnerValLike.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/types/InnerValLike.scala
@@ -20,7 +20,6 @@
 package org.apache.s2graph.core.types
 
 import org.apache.hadoop.hbase.util._
-import org.apache.s2graph.core.utils.logger
 
 object InnerVal extends HBaseDeserializableWithIsVertexId {
   import HBaseType._

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/main/scala/org/apache/s2graph/core/types/VertexId.scala
----------------------------------------------------------------------
diff --git a/s2core/src/main/scala/org/apache/s2graph/core/types/VertexId.scala b/s2core/src/main/scala/org/apache/s2graph/core/types/VertexId.scala
index 31bdce6..628a149 100644
--- a/s2core/src/main/scala/org/apache/s2graph/core/types/VertexId.scala
+++ b/s2core/src/main/scala/org/apache/s2graph/core/types/VertexId.scala
@@ -23,9 +23,13 @@ import org.apache.hadoop.hbase.util.Bytes
 import org.apache.s2graph.core.{GraphUtil, S2Vertex}
 import org.apache.s2graph.core.mysqls.ServiceColumn
 import org.apache.s2graph.core.types.HBaseType._
+import org.apache.s2graph.core.io.Conversions._
+import play.api.libs.json.Json
 
 object VertexId extends HBaseDeserializable {
   import HBaseType._
+
+
   def fromBytes(bytes: Array[Byte],
                 offset: Int,
                 len: Int,
@@ -49,6 +53,20 @@ object VertexId extends HBaseDeserializable {
   def toTargetVertexId(vid: VertexId) = {
     TargetVertexId(vid.column, vid.innerId)
   }
+
+  def unapply(vertexId: VertexId): Option[(ServiceColumn, InnerValLike)] = {
+    Some((vertexId.column, vertexId.innerId))
+  }
+
+  def fromString(s: String): VertexId = {
+
+//    val Array(serviceId, columnName, innerValStr) = s.split(S2Vertex.VertexLabelDelimiter)
+//    val service = Service.findById(serviceId.toInt)
+//    val column = ServiceColumn.find(service.id.get, columnName).getOrElse(throw new LabelNotExistException(columnName))
+//    val innerId = JSONParser.toInnerVal(innerValStr, column.columnType, column.schemaVersion)
+//    VertexId(column, innerId)
+    s2VertexIdReads.reads(Json.parse(s)).get
+  }
 }
 
 class VertexId (val column: ServiceColumn, val innerId: InnerValLike) extends HBaseSerializable {
@@ -67,9 +85,10 @@ class VertexId (val column: ServiceColumn, val innerId: InnerValLike) extends HB
   def bytes: Array[Byte] = Bytes.add(hashBytes, innerId.bytes, colIdBytes)
 
   override def toString(): String = {
+    s2VertexIdWrites.writes(this).toString()
     //    column.id.get.toString() + "," + innerId.toString()
-    val del = S2Vertex.VertexLabelDelimiter
-    s"${column.serviceId}${del}${column.columnName}${del}${innerId}"
+//    val del = S2Vertex.VertexLabelDelimiter
+//    Seq(column.serviceId, column.columnName, innerId.toIdString()).mkString(del)
   }
 
   override def hashCode(): Int = {

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/test/scala/org/apache/s2graph/core/io/ConversionTest.scala
----------------------------------------------------------------------
diff --git a/s2core/src/test/scala/org/apache/s2graph/core/io/ConversionTest.scala b/s2core/src/test/scala/org/apache/s2graph/core/io/ConversionTest.scala
new file mode 100644
index 0000000..b305108
--- /dev/null
+++ b/s2core/src/test/scala/org/apache/s2graph/core/io/ConversionTest.scala
@@ -0,0 +1,115 @@
+package org.apache.s2graph.core.io
+
+//import org.apache.s2graph.core.{EdgeId, S2VertexPropertyId}
+import org.apache.s2graph.core.mysqls.{ColumnMeta, Service, ServiceColumn}
+import org.apache.s2graph.core.types.{InnerVal, VertexId}
+import org.apache.s2graph.core.utils.logger
+import org.scalatest.{FunSuite, Matchers}
+
+//class ConversionsTest extends FunSuite with Matchers {
+//  import Conversions._
+//  import org.apache.s2graph.core.types.HBaseType._
+//
+//  test("innerVal test") {
+//    val value = InnerVal.withStr("a,b,c", DEFAULT_VERSION)
+//
+//    val writer = InnerValLikeWrites
+//    val reader = InnerValLikeReads
+//    val json = writer.writes(value)
+//    val deserialized = reader.reads(json).get
+//
+//    println(s"[Given]: $value")
+//    println(s"[GivenJson]: $json")
+//    println(s"[Deserialized]: $deserialized")
+//    println(s"[DeserializedJson]: ${writer.writes(deserialized)}")
+//
+//    value shouldBe (deserialized)
+//  }
+//
+//  test("serviceColumn test") {
+//    val value = Service(Option(1), "serviceName", "accessToken", "cluster", "hTableName", 10, Option(10), None)
+//    val writer = serviceWrites
+//    val reader = serviceReads
+//    val json = writer.writes(value)
+//    val deserialized = reader.reads(json).get
+//
+//    println(s"[Given]: $value")
+//    println(s"[GivenJson]: $json")
+//    println(s"[Deserialized]: $deserialized")
+//    println(s"[DeserializedJson]: ${writer.writes(deserialized)}")
+//
+//    value shouldBe (deserialized)
+//
+//  }
+//
+//  test("s2VertexPropertyId test") {
+////    val column = ServiceColumn(Option(10), 1, "vertex", "string", DEFAULT_VERSION)
+//    val columnMeta = ColumnMeta(Option(1), 1, "name", 1.toByte, "string")
+//    val innerVal = InnerVal.withStr("shon", DEFAULT_VERSION)
+//    val value = S2VertexPropertyId(columnMeta, innerVal)
+//
+//    val writer = s2VertexPropertyIdWrites
+//    val reader = s2VertexPropertyIdReads
+//    val json = writer.writes(value)
+//    val deserialized = reader.reads(json).get
+//
+//    println(s"[Given]: $value")
+//    println(s"[GivenJson]: $json")
+//    println(s"[Deserialized]: $deserialized")
+//    println(s"[DeserializedJson]: ${writer.writes(deserialized)}")
+//
+//    value shouldBe (deserialized)
+//  }
+//
+//  test("s2VertexId test") {
+//    val column = ServiceColumn(Option(10), 1, "vertex", "string", DEFAULT_VERSION)
+//    val innerVal = InnerVal.withStr("vertex.1", DEFAULT_VERSION)
+//    val value = VertexId(column, innerVal)
+//
+//    val writer = s2VertexIdWrites
+//    val reader = s2VertexIdReads
+//    val json = writer.writes(value)
+//    val deserialized = reader.reads(json).get
+//
+//    println(s"[Given]: $value")
+//    println(s"[GivenJson]: $json")
+//    println(s"[Deserialized]: $deserialized")
+//    println(s"[DeserializedJson]: ${writer.writes(deserialized)}")
+//
+//    value shouldBe (deserialized)
+//  }
+//
+//  test("EdgeId test") {
+//    val s =
+//      s"""
+//         |{
+//         |	"srcVertexId": {
+//         |		"value": 1,
+//         |		"dataType": "long",
+//         |		"schemaVersion": "v3"
+//         |	},
+//         |	"tgtVertexId": {
+//         |		"value": 2,
+//         |		"dataType": "bigDecimal",
+//         |		"schemaVersion": "v3"
+//         |	},
+//         |	"labelName": "knows",
+//         |	"direction": "out",
+//         |	"ts": 0
+//         |}
+//       """.stripMargin
+//    val value = EdgeId.fromString(s)
+//
+//    val writer = s2EdgeIdWrites
+//    val reader = s2EdgeIdReads
+//    val json = writer.writes(value)
+//    val deserialized = reader.reads(json).get
+//
+//    println(s"[Given]: $value")
+//    println(s"[GivenJson]: $json")
+//    println(s"[Deserialized]: $deserialized")
+//    println(s"[DeserializedJson]: ${writer.writes(deserialized)}")
+//
+//    value shouldBe (deserialized)
+//  }
+//}

http://git-wip-us.apache.org/repos/asf/incubator-s2graph/blob/a9c50168/s2core/src/test/scala/org/apache/s2graph/core/tinkerpop/S2GraphProvider.scala
----------------------------------------------------------------------
diff --git a/s2core/src/test/scala/org/apache/s2graph/core/tinkerpop/S2GraphProvider.scala b/s2core/src/test/scala/org/apache/s2graph/core/tinkerpop/S2GraphProvider.scala
index dc24cb6..5165252 100644
--- a/s2core/src/test/scala/org/apache/s2graph/core/tinkerpop/S2GraphProvider.scala
+++ b/s2core/src/test/scala/org/apache/s2graph/core/tinkerpop/S2GraphProvider.scala
@@ -139,16 +139,14 @@ class S2GraphProvider extends AbstractGraphProvider {
       ColumnMeta.findOrInsert(defaultServiceColumn.id.get, "aKey", dataType, useCache = false)
     }
 
-    if (testClass.getSimpleName == "ReferenceEdgeTest") {
-      mnt.createLabel("knows", defaultService.serviceName, "person", "integer", defaultService.serviceName, "person", "integer",
-        true, defaultService.serviceName, Nil, knowsProp, "strong", None, None, options = Option("""{"skipReverse": false}"""))
-    } else if (testClass.getName.contains("SerializationTest") || testClass.getSimpleName == "IoPropertyTest") {
+    if (testClass.getName.contains("SerializationTest") || testClass.getSimpleName == "IoPropertyTest") {
       mnt.createLabel("knows", defaultService.serviceName, "person", "integer", defaultService.serviceName, "person", "integer",
         true, defaultService.serviceName, Nil, knowsProp, "strong", None, None, options = Option("""{"skipReverse": false}"""))
     } else if (testClass.getSimpleName.contains("CommunityGeneratorTest")) {
       mnt.createLabel("knows", defaultService.serviceName, "person", "integer", defaultService.serviceName, "person", "integer",
         true, defaultService.serviceName, Nil, knowsProp, "strong", None, None, options = Option("""{"skipReverse": true}"""))
-    } else if (testClass.getSimpleName == "DetachedEdgeTest" || testClass.getSimpleName.contains("GraphSONTest")) {
+    } else if (testClass.getSimpleName == "DetachedEdgeTest" ||
+        testClass.getSimpleName.contains("GraphSONTest")) {
       mnt.createLabel("knows", defaultService.serviceName, "person", "integer", defaultService.serviceName, "person", "integer",
         true, defaultService.serviceName, Nil, knowsProp, "strong", None, None, options = Option("""{"skipReverse": false}"""))
     } else {