http://github.com/FasterXML/jackson: Core annotations used for value types, used by Jackson data binding package. (FasterXML)
  • Tatu Saloranta
  • Christopher Currie
  • Paul Brown 
package com.fasterxml.jackson.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;


Marker annotation that can be used to define a default value
used when trying to deserialize unknown Enum values.


This annotation is only applicable when the @READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE
deserialization feature is enabled.


If the more than one enum value is marked with this annotation,
the first one to be detected will be used. Which one exactly is undetermined.

/**
 * Marker annotation that can be used to define a default value
 * used when trying to deserialize unknown Enum values.
 * <p>
 * This annotation is only applicable when the <code>@READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE</code>
 * deserialization feature is enabled.
 * <p>
 * If the more than one enum value is marked with this annotation,
 * the first one to be detected will be used. Which one exactly is undetermined.
 */
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JsonEnumDefaultValue
{

}