[AVRO-2723] Avro Java: Obtaining default field values for POJO objects with ReflectData

• Type: New Feature
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.9.1
• Fix Version/s: 1.10.0
• Component/s: java
• Assignee: Andy Le
• Reporter: Andy Le
• Created: 02/Feb/20 23:16
• Updated: 02/Jul/20 12:22
• Resolved: 30/Apr/20 16:57

Description

Hi guys,

 

I've got a simple app using Avro Reflection:

 

public class App {
  public static void main(String[] args) {
    testReflection();
  }

  static class User {
    public String first = "Andy";
    public String last = "Le";
  }

  static void testReflection(){
    // get the reflected schema for packets
    Schema schema = ReflectData.AllowNull.get().getSchema(User.class);
    System.out.println(schema.toString(true));
  }

The output on console will be:

{
  "type" : "record",
  "name" : "User",
  "namespace" : "App",
  "fields" : [ {
    "name" : "first",
    "type" : [ "null", "string" ],
    "default" : null
  }, {
    "name" : "last",
    "type" : [ "null", "string" ],
    "default" : null
  } ]
}

 

As you can see, there's no default values for fields. Would you please tell me how to obtain such values?

Thank you.

 

 

 

 

 

Issue Links

• links to: GitHub Pull Request #842