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 on a property accessor
* (field, getter or setter, constructor parameter) to indicate that
* the property is to contain type id to use when including
* polymorphic type information.
* Annotation should <b>only be used</b> if the intent is to override
* generation of standard type id: if so, value of the property will be
* accessed during serialization and used as the type id.
*<p>
* On deserialization annotation has no effect, as visibility of type id
* is governed by value of {@link JsonTypeInfo#visible}; properties with
* this annotation get no special handling.
*<p>
* On serialization, this annotation will exclude property from being
* serialized along other properties; instead, its value is serialized
* as the type identifier. Since type identifier may be included in
* various places, it may still appear like 'normal' property (when using
* {@link JsonTypeInfo.As#PROPERTY}), but is more commonly embedded
* in a different place, as per inclusion rules (see {@link JsonTypeInfo}
* for details).
*
* @since 2.0
*/
@Target({ElementType.ANNOTATION_TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JsonTypeId
{
}