/* * Copyright 2016-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * 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; /** * Annotation to convert the enumeration value to a string. * * <p>Alternately, the {@link DynamoDBTyped} annotation may be used,</p> * <pre class="brush: java"> * public static enum Status { OPEN, PENDING, CLOSED } * * @DynamoDBTyped(DynamoDBAttributeType.S) * public Status getStatus() * </pre> * * <p>Please note, there are some risks in distributed systems when using * enumerations as attributes intead of simply using a String. * When adding new values to the enumeration, the enum only changes must * be deployed before the enumeration value can be persisted. This will * ensure that all systems have the correct code to map it from the item * record in DynamoDB to your objects.</p> * * @see com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTypeConverted */ @DynamoDBTyped(DynamoDBMapperFieldModel.DynamoDBAttributeType.S) @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD}) public @interface DynamoDBTypeConvertedEnum { }