{
  head:{
    type:"apache_drill_logical_plan",
    version:"1",
    generator:{
      type:"manual",
      info:"na"
    }
  },
  storage:{
    logs: {
      type:"text",
      file: "local://logs/*.log",
      compress:"gzip",
      line-delimiter:"\n",
      record-maker:{
        type:"first-row",
        delimiter:","
      }
    },
    {
      type:"mongo",
      name:"users",
      connection:"mongodb://blue:red@localhost/users"
    },
    {
      type:"mysql",
      name:"mysql",
      connection:"jdbc:mysql://localhost/main"
    }
  ],
  query:[
    {
      @id:"1",
      op:"scan",
      memo:"initial_scan",
      storageengine:"local-logs",
      selection: {}
    },
    {
      @id:"2",
      input:"1",
      memo:"transform1",
      op:"transform",
      transforms:[
        {
          ref:"userId",
          expr:"regex_like('activity.cookie', 'persistent=([^;]*)')"
        },
        {
          ref:"session",
          expr:"regex_like('activity.cookie', 'session=([^;]*)')"
        }
      ]
    },
    {
      @id:"3",
      input:"2",
      memo:"transform2",
      op:"transform",
      transforms:[
        {
          ref:"userId",
          expr:"regex_like('activity.cookie', 'persistent=([^;]*)')"
        },
        {
          ref:"session",
          expr:"regex_like('activity.cookie', 'session=([^;]*)')"
        }
      ]
    },
    {
      @id:"7",
      input:"3",
      op:"sequence",
      do:[
        {
          op:"transform",
          memo:"seq_transform",
          transforms:[
            {
              ref:"happy",
              expr:"regex_like('ep2', 'dink')"
            }
          ]
        }
        ,
        {
          op:"transform",
          memo:"last_transform",
          transforms:[
            {
              ref:"abc",
              expr:"123"
            }
          ]
        }
      ]
    },
    {
      @id:"10",
      input:"3",
      op:"transform",
      memo:"t3",
      transforms:[
        {
          ref:"happy",
          expr:"regex_like('ep2', 'dink')"
        }
      ]
    },
    {
      @id:12,
      op:"join",
      type: "inner",
      left:"7",
      right:"10",
      conditions: [{relationship:"==", left: "1", right: "1" }]
    }
    ,
    {
      input: 12,
      op: "store",
      memo: "output sink",
      target: {
        file: "console:///stdout"
      }

    }

  ]
}