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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.s3.transfer;

import java.io.IOException;

import com.amazonaws.services.s3.model.ObjectMetadata;

/**
 * Represents an asynchronous download from Amazon S3.
 * 
 * See {@link TransferManager} for more information about creating transfers.
 * 
 *
 * @see TransferManager#download(com.amazonaws.services.s3.model.GetObjectRequest);
 */
public interface Download extends Transfer {

    /**
     * Returns the ObjectMetadata for the object being downloaded.
     *
     * @return The ObjectMetadata for the object being downloaded.
     */
    public ObjectMetadata getObjectMetadata();

    /**
     * The name of the bucket where the object is being downloaded from.
     *
     * @return The name of the bucket where the object is being downloaded from.
     */
    public String getBucketName();

    /**
     * The key under which this object was stored in Amazon S3.
     *
     * @return The key under which this object was stored in Amazon S3.
     */
    public String getKey();

    /**
     * Cancels this download.
     *
     * @throws IOException
     */
    public void abort() throws IOException;

}