org.joda.time.DateTime serializer for titan

DateTimeSerializer.scala

package com.example

import java.nio.ByteBuffer
import org.joda.time.DateTime
import com.thinkaurelius.titan.core.AttributeSerializer

class DateTimeSerializer extends AttributeSerializer[DateTime] {

  private val serialVersionUID = 272513079663L

  def read(buffer: ByteBuffer): DateTime =
    new DateTime(buffer.getLong() + Long.MinValue)

  def writeObjectData(buffer: ByteBuffer, obj: DateTime): Unit =
    buffer.putLong(obj.getMillis - Long.MinValue)

}