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

/*
 * Copyright 2016-2022 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.
 *
 * Alternately, the {@link DynamoDBTyped} annotation may be used,
 *  * public static enum Status { OPEN, PENDING, CLOSED }
 *
 * @DynamoDBTyped(DynamoDBAttributeType.S)
 * public Status getStatus()
 * 
 *
 * Please note, there are some risks in distributed systems when using
 * enumerations as attributes instead 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.
 *
 * @see com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTypeConverted
 */
@DynamoDBTyped(DynamoDBMapperFieldModel.DynamoDBAttributeType.S)
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD})
public @interface DynamoDBTypeConvertedEnum {

}