dson 0.1.0

Convert Objects to Json and Json to Objects

DSON Object Mapper

The porpouse of this library is to convert Objects to JSON and JSON Objects using reflection (simillar approch to Jackson and Gson Java Object Mappers).

##JSON to Object To convert JSON to a Dart Object you need to create a library wich contains your PODO(Pure Old Dart Object):

library myclass_library;

class MyNestedClass {
  String name;
}

class MyClass {
  int i, j;
  String greeting;
  MyNestedClass myNestedClass;
  int get sum => i + j;
  List<int> intList;
  List<String> stringList;
  List<MyNestedClass> myNestedClassList;

  MyClass();
}

And then import it in the libray that is in charge of converting the object:

import "package:DSON/ObjectMapper.dart";
import "myclass_library.dart";

main() {

   MyClass myObject = Reader.jsonToObject(
        '{'
            '"greeting": "hello, there",'
            '"i": 3,'
            '"j": 5,'
            '"intList": [1, 2, 3, 4, 5],'
            '"stringList": ["string1", "string2"],'
            '"myNestedClass": {'
                  '"name": "someName"'
            '},'
            '"myNestedClassList": ['
               '{'
                 '"name": "someName1"'
               '},{'
                 '"name": "someName2"'
               '}'
            ']'
        '}', MyClass, "myclass_library");

  print(myObject.i); // prints 3
  print(myObject.j); // prints 5
  print(myObject.greeting); //prints "hello, there"
  print(myObject.myNestedClass.name); // prints "someName"
  print(myObject.myNestedClassList[0].name); // prints "someName1"
  print(myObject.myNestedClassList[1].name); // prints "someName2"
}

##JSON to List of Objects Basically is the same as converting JSON to an object, you just need to pass the type of the list that you want to convert:

import "package:DSON/object_mapper.dart";
import "myclass_library.dart";

main() {

   var myNestedClassList = Reader.jsontoListOfObjects(
      '['
        '{'
          '"name": "someName1"'
        '},{'
          '"name": "someName2"'
        '}'
      ']', MyNestedClass, "myclass_library");

    print(myNestedClassList[0].name); // print "someName1"
    print(myNestedClassList[1].name); // print "someName2"
}

Note that the class MyNestedClass is inside a library. This is because a class cannot be converted if it is not inside a library.

##Object to JSON To convert from an object to JSON you just need to declare the class, instantiate the object and convert it:

class MyNestedClass {
  String name;
}

class MyClass {
  int i, j;
  MyNestedClass myNestedClass;
  int get sum => i + j;

  MyClass(this.i, this.j);
}

main() {

  MyClass myClass = new MyClass(3, 5)
    ..myNestedClass = (new MyNestedClass()..name = "luis");

  print(Writer.objectToJson(myClass)) //resutl: '{"i":3,"j":5,"myNestedClass":{"name":"luis"},"sum":8}'));
}