java - Created a nested schema in Apache Spark SQL -


i want load simple json schema in sparksession has employee address array . sample json below

{"firstname":"neil","lastname":"irani", "addresses" : [ {  "city" : "brindavan", "state" : "nj"  }, {  "city" : "subala", "state" : "dt"  }]}

i'm trying create schema loading json, believe there wrong in below way of creating schema ... please advise .. below code in java ... not find reasonable sample 

    list<structfield> employeefields = new arraylist<>();     employeefields.add(datatypes.createstructfield("firstname", datatypes.stringtype, true));     employeefields.add(datatypes.createstructfield("lastname", datatypes.stringtype, true));     employeefields.add(datatypes.createstructfield("email", datatypes.stringtype, true));      list<structfield> addressfields = new arraylist<>();     addressfields.add(datatypes.createstructfield("city", datatypes.stringtype, true));     addressfields.add(datatypes.createstructfield("state", datatypes.stringtype, true));     addressfields.add(datatypes.createstructfield("zip", datatypes.stringtype, true));      employeefields.add(datatypes.createstructfield("addresses", datatypes.createstructtype(addressfields), true));      structtype employeeschema = datatypes.createstructtype(employeefields);       dataset<employee>  rowdataset = sparksession.read()             .option("inferschema", "false")             .schema(employeeschema)             .json("simple_employees.json").as(employeeencoder);

update

i not creating array type below code work fine

list<structfield> employeefields = new arraylist<>(); employeefields.add(datatypes.createstructfield("firstname", datatypes.stringtype, true)); employeefields.add(datatypes.createstructfield("lastname", datatypes.stringtype, true)); employeefields.add(datatypes.createstructfield("email", datatypes.stringtype, true));  list<structfield> addressfields = new arraylist<>(); addressfields.add(datatypes.createstructfield("city", datatypes.stringtype, true)); addressfields.add(datatypes.createstructfield("state", datatypes.stringtype, true)); addressfields.add(datatypes.createstructfield("zip", datatypes.stringtype, true)); arraytype addressstruct = datatypes.createarraytype( datatypes.createstructtype(addressfields));  employeefields.add(datatypes.createstructfield("addresses", addressstruct, true)); structtype employeeschema = datatypes.createstructtype(employeefields);


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