Trying to create a [StructType] from a JSON string.
val test = "{\"test\":\"validate\"}"
println( "datatype: " + DataType.fromJson(test) )
Keep getting error:
java.lang.IllegalArgumentException: Failed to convert the JSON string '{"test":"validate"}' to a data type.
Not sure what's the problem here..
You should define the JSON as shown below.
val test = """{
| "type":"struct",
| "fields":[
| {
| "name":"test",
| "type":"string",
| "nullable":true,
| "metadata":{
|
| }
| }
| ]
|}""".stripMargin
println("datatype: " + DataType.fromJson(test))
//datatype: StructType(StructField(test,StringType,true))