com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMarshalling Maven / Gradle / Ivy

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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2011-2014 Amazon Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *    http://aws.amazon.com/apache2.0
 *
 * This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
 * OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and
 * limitations under the License.
 */
package com.amazonaws.services.dynamodbv2.datamodeling;

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

/**
 * Annotation to mark a property as using a custom marshaller. This is required
 * when storing anything other than {@link String}s, {@link Number}s, and
 * {@link Set}s of the same to DynamoDB. Any object that can be converted into a
 * String representation and vice versa can be saved in this manner. This
 * annotation can be applied to either the getter method or the class field for
 * the specific property. If the annotation is applied directly to the class
 * field, the corresponding getter and setter must be declared in the same
 * class.
 * 
 * @see DynamoDBMarshaller
 * @see JsonMarshaller
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
public @interface DynamoDBMarshalling {

    /**
     * The class of the Marshaller that converts this property to and from a
     * String.
     */
    Class> marshallerClass();
}