I'm using SimpleModule to register the MixIn with Serialization and Deserialization. I am unable to make it work. The classes are shown below. WHen I print the serialized string I see the size printed and properties are not named as I specified in the mixin. It is printing {"w":5,"h":10,"size":50}
. So mix-in registration with both serializer and deserialization configurations was unsuccessful. What am I doing wrong.
MixIn Class:
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonProperty;
abstract class MixIn {
MixIn(@JsonProperty("width") int w, @JsonProperty("height") int h) {
}
@JsonProperty("width")
abstract int getW();
@JsonProperty("height")
abstract int getH();
@JsonIgnore
abstract int getSize();
}
Rectangle Class:
public final class Rectangle {
final private int w, h;
public Rectangle(int w, int h) {
this.w = w;
this.h = h;
}
public int getW() {
return w;
}
public int getH() {
return h;
}
public int getSize() {
return w * h;
}
}
Registering MixIn:
import org.codehaus.jackson.Version;
import org.codehaus.jackson.map.module.SimpleModule;
public class MyModule extends SimpleModule {
public MyModule() {
super("ModuleName", new Version(0, 0, 1, null));
}
@Override
public void setupModule(SetupContext context) {
context.setMixInAnnotations(Rectangle.class, MixIn.class);
// and other set up, if any
}
}
Test Class:
import java.io.IOException;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.Test;
public class DeserializationTest {
@Test
public void test() throws IOException {
ObjectMapper objectMapper = new ObjectMapper();
// objectMapper.getSerializationConfig().addMixInAnnotations(Rectangle.class, MixIn.class);
// objectMapper.getDeserializationConfig().addMixInAnnotations(Rectangle.class, MixIn.class);
String str = objectMapper.writeValueAsString(new Rectangle(5, 10));
System.out.println(str);
Rectangle r = objectMapper.readValue(str, Rectangle.class);
}
}