package testcode;

import java.util.Objects;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * jackson-serializable Person, also with extra age field and equals and
 * hashcode
 */
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = As.WRAPPER_OBJECT)
@JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, setterVisibility = Visibility.NONE)
public class PersonJson {
	private static final ObjectMapper jackson = new ObjectMapper();
	private static final String serialized = "{\"PersonJson\":{\"name\":\"Kees\",\"age\":25}}";

	private final String name;
	private Integer age;

	@JsonCreator
	public PersonJson(@JsonProperty("name") String name,
			@JsonProperty("age") Integer age) {
		this.name = name;
		this.age = age;
	}

	@Override
	public String toString() {
		return "Person[" + name + "," + age + "]";
	}

	@Override
	public int hashCode() {
		return Objects.hash(age, name);
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		PersonJson other = (PersonJson) obj;
		return Objects.equals(age, other.age)
				&& Objects.equals(name, other.name);
	}

	static public void main(String[] args) throws JsonProcessingException {
		PersonJson person = new PersonJson("Kees", 25);
		System.out.println(person.toString());
		System.out.println(jackson.writeValueAsString(person));
		System.out.println(
				person.equals(jackson.readValue(serialized, PersonJson.class)));
		/*-
		Person[Kees,25]
		{"PersonJson":{"name":"Kees","age":25}}
		true
		 */
	}
}