Fast JSON parser for java projects

The easiest way to get started is to look at the unit tests or the demo.

There should be a package-visible no-argument constructor for each of your model classes. The fields also need to be package-visible.

Each class that needs a serializer/deserializer generated should be annotated with @JsonType. Each field that needs to be mapped to/from JSON should be annotated with @JsonField. The @JsonField annotation has one mandatory argument, which is the fieldname for the field in the JSON.

The following is an example of a very simple model class:

@JsonType
class Dessert {
  @JsonField(fieldName="type")
  String type;

  @JsonField(fieldName="rating")
  float rating;
}

The following scalar types are supported:

• String
• boolean/Boolean
• int/Integer
• long/Long
• float/Float
• double/Double

If a json field is another dictionary, it can be represented by another model class. That model class must also have the @JsonType annotation.

Lists of objects are supported either as Java Lists or Queues.

TODO: Document this. See the documentation in common/src/main/java/com/instagram/common/json/annotation/JsonType.java in the meanwhile.

TODO: Document this. See the documentation in common/src/main/java/com/instagram/common/json/annotation/JsonField.java in the meanwhile.