Streamline some pojo stuff

Author: piyush-zlai

service/src/main/java/ai/chronon/service/handlers/JoinSchemaHandler.java

@@ -42,18 +42,10 @@ public void handle(RoutingContext ctx) {
         }
 
         JavaJoinSchemaResponse joinSchemaResponse = joinSchemaResponseTry.getValue();
-        JsonObject joinSchemaObj = new JsonObject()
-                .put("joinName", joinSchemaResponse.joinName)
-                .put("keySchema", joinSchemaResponse.keySchema)
-                .put("valueSchema", joinSchemaResponse.valueSchema);
-
-        JsonObject response =
-                new JsonObject()
-                        .put("joinSchema", joinSchemaObj)
-                        .put("schemaHash", joinSchemaResponse.schemaHash);
+
         ctx.response()
                 .setStatusCode(200)
                 .putHeader("content-type", "application/json")
-                .end(response.encode());
+                .end(JsonObject.mapFrom(joinSchemaResponse).encode());
     }
 }

service/src/test/java/ai/chronon/service/handlers/JoinSchemaHandlerTest.java

@@ -84,15 +84,13 @@ public void testSuccessfulRequest(TestContext context) {
             String schemaHash = actualResponse.getString("schemaHash");
             context.assertEquals(schemaHash, "fakeschemaHash");
 
-            JsonObject returnedJoinSchema = actualResponse.getJsonObject("joinSchema");
-
-            String returnedJoinName = returnedJoinSchema.getString("joinName");
+            String returnedJoinName = actualResponse.getString("joinName");
             context.assertEquals(returnedJoinName, "user_join");
 
-            String keySchema = returnedJoinSchema.getString("keySchema");
+            String keySchema = actualResponse.getString("keySchema");
             context.assertEquals(keySchema, avroSchemaString);
 
-            String valueSchema = returnedJoinSchema.getString("valueSchema");
+            String valueSchema = actualResponse.getString("valueSchema");
             context.assertEquals(valueSchema, avroSchemaString);
 
             // confirm we can parse the avro schema fine