I have a json object like following

"values": {
      "GROUP(date)": "2019-09",
      "GROUP(account)": [
            {
                 "value": "228",
                 "text": "Subscription"
             }
         ],
       "SUM(amount)": "630.638",
}

The json object consists of key value pairs like above snippet. But the key is like method name coz there is a bracket like GROUP(date).

when I try to traverse using the key it not recognize the key. values.GROUP(date)

what is the way to get the value using this kind of key in ballerina?

CodePudding user response：

To use field access like values.GROUP(date), the parentheses can be escaped.

values.GROUP\(date\)

Alternatively, if the static type of values is a map (e.g., map<json> which represents JSON objects), member access can be used with a string literal.

values["GROUP(date)"]

CodePudding user response：

This is the answer that I found.

"values": {
      "GROUP(date)": "2019-09",
      "GROUP(account)": [
            {
                 "value": "228",
                 "text": "Subscription"
             }
         ],
       "SUM(amount)": "630.638",
}

         // direct call by key
         string date = values["GROUP(date)"].toString();
        
         // access value inside the array
         json[] account = <json[]> values["GROUP(account)"];
         map<json> account_obj = <map<json>> account[0];
         string account_value = check account_obj.text;

I tries to define a record and access the object. But wasn't able to have the approach.