Schema with records referring to each other

Question

I have an schema where I have two records with field that contain elements of each other. How do you forward declare a record in Avro so that you can use its declaration before it is defined.

  {
"namespace": "mytest",
"name": "Foo",
"type": "record",
"fields": [
  {"name" : "bar", "type": ["null", "Bar"]}
],

"name": "Bar",
"type": "record",
"fields": [
  {"name" : "foo", "type": ["null", "Foo"]}
]
}

Answer 1

As far as I know you can't use record statements in schema as you did.

I think you need a schema like this:

{
  "type": "record",
  "name": "Foo",
  "namespace": "q44820145",
  "fields": [
    {
      "name": "bar",
      "type": {
        "type": "record",
        "name": "Bar",
        "fields": [
          {
            "name": "foo",
            "type": ["null", "Foo"]
          }
        ]
      }
    }
  ]
}