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Skeson

JSON Library for Java with a focus on providing a clean DSL

obj(
    name -> lit("Vaishnav"),
    age -> lit(21),
    address -> obj(
        street -> lit("Some where"),
        city -> lit("In some City"),
        state -> lit("In some State")
    )
)
{"name": "Vaishnav","age": 21,"address": {"street": "Some where","city": "In some City","state": "In some State"}}

Usage Example

IMPORTANT: Your application/library must be compiled with the -parameters command line argument

Type 1 (Preffered)

JsonAdapter
class Human {
  private final String name;
  private final int age;
  private final int height;

  Human(String name, int age, int height) {
      this.name = name;
      this.age = age;
      this.height = height;
  }

  public String getName() {
      return name;
  }

  public int getAge() {
      return age;
  }

  public int getHeight() {
      return height;
  }

  @Override
  public boolean equals(final Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;
      final Human human = (Human) o;
      return getAge() == human.getAge() && getHeight() == human.getHeight() && Objects.equals(getName(), human.getName());
  }

  @Override
  public int hashCode() {
      return Objects.hash(getName(), getAge(), getHeight());
  }
}

class HumanJsonAdapter implements JsonAdapter < Human > {

  @Override
  public JsonNode toJson(final Human object) {
      final String objectName = object.getName();
      final int objectAge = object.getAge();
      final int objectHeight = object.getHeight();
      return obj(
          name - > lit(objectName),
          age - > lit(objectAge),
          height - > lit(objectHeight)
      );
  }

  @Override
  public Human fromJson(final Consumer < JsonNode > readNode) {
      final LiteralReadingJsonNode < String > nameMatcher = matchString();
      final LiteralReadingJsonNode < Number > ageMatcher = matchNumber();
      final LiteralReadingJsonNode < Number > heightMatcher = matchNumber();
      readNode.accept(obj(
          name - > nameMatcher,
          age - > ageMatcher,
          height - > heightMatcher
      ));
      return new Human(nameMatcher.getValue(), ageMatcher.getValue().intValue(), heightMatcher.getValue().intValue());
  }
}

Type 2

Plain Json Read
final LiteralReadingJsonNode<String> nameMatcher = matchString();
final LiteralReadingJsonNode<Number> ageMatcher = matchNumber();
final BranchReadingJsonNode<ObjectJsonNode> addressMatcher = matchObject();
final JsonNode node = obj(
   name -> nameMatcher,
   age -> ageMatcher,
   address -> addressMatcher
);
node.match(jsonString);
System.out.printf("Name: %s\n", nameMatcher.getValue());
System.out.printf("Age: %s\n", ageMatcher.getValue());
System.out.printf("Address: %s\n", addressMatcher.getValue());
Plain Json Write
final JsonNode node = obj(
   name -> lit("Vaishnav"),
   age -> lit(21),
   address -> obj(
       street -> lit("Some where"),
       city -> lit("In some City"),
       state -> lit("In some State")
   )
);
System.out.println(node);

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Json Dsl - Java

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