com.amazonaws.services.simpleworkflow.flow.DataConverter 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 2012-2014 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.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. 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.simpleworkflow.flow;

/**
 * Used by the framework to serialize/deserialize method parameters that need to
 * be sent over the wire. 
 * 
 * @author fateev
 */
public abstract class DataConverter {

    /**
     * Implements conversion of the single value.
     * 
     * @param value
     *            Java value to convert to String.
     * @return converted value
     * @throws DataConverterException
     *             if conversion of the value passed as parameter failed for any
     *             reason.
     */
    public abstract String toData(Object value) throws DataConverterException;

    /**
     * Implements conversion of the single value.
     * 
     * @param data
     *            Simple Workflow Data value to convert to a Java object.
     * @return converted Java object
     * @throws DataConverterException
     *             if conversion of the data passed as parameter failed for any
     *             reason.
     */
    public abstract  T fromData(String content, Class valueType) throws DataConverterException;

}