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package org.codehaus.jackson.annotate;

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

/**
 * Annotation used with {@link JsonTypeInfo} to indicate sub types of serializable
 * polymorphic types, and to associate logical names used within JSON content
 * (which is more portable than using physical Java class names).
 * 
 * @since 1.5 (but available to fields, methods and constructor params only since 1.8)
 */
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JsonSubTypes {
    /**
     * Subtypes of the annotated type (annotated class, or property value type
     * associated with the annotated method). These will be checked recursively
     * so that types can be defined by only including direct subtypes.
     */
    public Type[] value();

    /**
     * Definition of a subtype, along with optional name. If name is missing, class
     * of the type will be checked for {@link JsonTypeName} annotation; and if that
     * is also missing or empty, a default
     * name will be constructed by type id mechanism.
     * Default name is usually based on class name.
     */
    public @interface Type {
        /**
         * Class of the subtype
         */
        public Class value();

        /**
         * Logical type name used as the type identifier for the class
         */
        public String name() default "";
    }
}