嵌套对象中具有空值的颠簸转换

Question

Actual Json

  {
  "hits": {
    "hits": [
      {
        "_source": {
          "customer": {
            "name": "Gnana",
            "address": {
              "AdrLine": "11 main lane",
              "zipcode": "08598"
            },
            "contact": {
              "firstcontact": "fff",
              "secondcontact": "yyyy"
            }
          }
        }
      }
    ]
  }
}

Joltspec

[
  {
    "operation": "shift",
    "spec": {
      "hits": {
        "hits": {
          "": {
            "_source": {
              "customer": {
                "name": "customers[&3].&1.name",
                "address": {
                  "AdrLine": "customers[&4].&2.&1.adrline",
                  "Country": "customers[&4].&2.&1.country"
                },
                "contact": {
                  "firstcontact": "customers[&4].&2.&1.contact1",
                  "secondcontact": "customers[&4].&2.&1.contact2"
                }
              }
            }
          }
        }
      }
    }
  },
  {
    "operation": "default",
    "spec": {
      "customers[]": {
        "": {
          "customer": null
        }
      }
    }
  }
]



  I get the desired output with the following spec.



 {
  "customers": [
    {
      "customer": {
        "name": "Gnana",
        "address": {
          "adrline": "11 main lane"
        },
        "contact": {
          "contact1": "fff",
          "contact2": "yyyy"
        }
      }
    }
  ]
}

客户为空的情况2

   {
  "hits": {
    "hits": [
      {
        "_source": {
          "customer": null
        }
      }
    ]
  }
}

I need output as



  {
  "customers": [
    {
      "customer": null
    }
  ]
}

I am not getting customer:null in actual transformation
  {
  "customers": []
}

scenario 2 with address as null in customer object



 {
  "hits": {
    "hits": [
      {
        "_source": {
          "customer": {
            "name": "Gnana",
            "address": null,
            "contact": {
              "firstcontact": "fff",
              "secondcontact": "yyyy"
            }
          }
        }
      }
    ]
  }
}

Here address is null and I need output as



  {
  "customers": [
    {
      "customer": {
        "name": "Gnana",
        "address": null,
        "contact": {
          "contact1": "fff",
          "contact2": "yyyy"
        }
      }
    }
  ]
}

但是我没有得到“地址”：实际转换中为空

{
  "customers": [
    {
      "customer": {
        "name": "Gnana",
        "contact": {
          "contact1": "fff",
          "contact2": "yyyy"
        }
      }
    }
  ]
}

当我需要客户时，如何处理Json中的（Customer）对象为null：我的响应中还有另一个对象中的Object为null（客户对象中的地址），因为我需要{customer：{Address：null} }进行Jolt转换。

Answer 1

在这里回答。需要两个“默认”步骤。

https://github.com/bazaarvoice/jolt/issues/651