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The AWS Java Mobile SDK for Amazon S3 module holds the client classes that are used for communicating with Amazon Simple Storage Service
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/*
 * Copyright 2010-2018 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.model;

import java.util.Date;

/**
 * Contains the summary of an object stored in an Amazon S3 bucket. This object
 * doesn't contain contain the object's full metadata or any of its contents.
 *
 * @see S3Object
 */
public class S3ObjectSummary {

    /** The name of the bucket in which this object is stored */
    protected String bucketName;

    /** The key under which this object is stored */
    protected String key;

    /** Hex encoded MD5 hash of this object's contents, as computed by Amazon S3 */
    protected String eTag;

    /** The size of this object, in bytes */
    protected long size;

    /** The date, according to Amazon S3, when this object was last modified */
    protected Date lastModified;

    /** The class of storage used by Amazon S3 to store this object */
    protected String storageClass;

    /**
     * The owner of this object - can be null if the requester doesn't have
     * permission to view object ownership information
     */
    protected Owner owner;

    /**
     * Gets the name of the Amazon S3 bucket in which this object is stored.
     *
     * @return The name of the Amazon S3 bucket in which this object is stored.
     * @see S3ObjectSummary#setBucketName(String)
     */
    public String getBucketName() {
        return bucketName;
    }

    /**
     * Sets the name of the Amazon S3 bucket in which this object is stored.
     *
     * @param bucketName The name of the Amazon S3 bucket in which this object
     *            is stored.
     * @see S3ObjectSummary#getBucketName()
     */
    public void setBucketName(String bucketName) {
        this.bucketName = bucketName;
    }

    /**
     * Gets the key under which this object is stored in Amazon S3.
     *
     * @return The key under which this object is stored in Amazon S3.
     * @see S3ObjectSummary#setKey(String)
     */
    public String getKey() {
        return key;
    }

    /**
     * Sets the key under which this object is stored in Amazon S3.
     *
     * @param key The key under which this object is stored in Amazon S3.
     * @see S3ObjectSummary#getKey()
     */
    public void setKey(String key) {
        this.key = key;
    }

    /**
     * Gets the hex encoded 128-bit MD5 hash of this object's contents as
     * computed by Amazon S3.
     *
     * @return The hex encoded 128-bit MD5 hash of this object's contents as
     *         computed by Amazon S3.
     * @see S3ObjectSummary#setETag(String)
     */
    public String getETag() {
        return eTag;
    }

    /**
     * Sets the hex encoded 128-bit MD5 hash of this object's contents as
     * computed by Amazon S3.
     *
     * @param eTag The hex encoded 128-bit MD5 hash of this object's contents as
     *            computed by Amazon S3.
     * @see S3ObjectSummary#getETag()
     */
    public void setETag(String eTag) {
        this.eTag = eTag;
    }

    /**
     * Gets the size of this object in bytes.
     *
     * @return The size of this object in bytes.
     * @see 3ObjectSummary#setSize(long)
     */
    public long getSize() {
        return size;
    }

    /**
     * Sets the size of this object in bytes.
     *
     * @param size The size of this object in bytes.
     * @see S3ObjectSummary#getSize()
     */
    public void setSize(long size) {
        this.size = size;
    }

    /**
     * Gets the date when, according to Amazon S3, this object was last
     * modified.
     *
     * @return The date when, according to Amazon S3, this object was last
     *         modified.
     * @see S3ObjectSummary#setLastModified(Date)
     */
    public Date getLastModified() {
        return lastModified;
    }

    /**
     * Sets the date, according to Amazon S3, this object was last modified.
     *
     * @param lastModified The date when, according to Amazon S3, this object
     *            was last modified.
     * @see S3ObjectSummary#getLastModified()
     */
    public void setLastModified(Date lastModified) {
        this.lastModified = lastModified;
    }

    /**
     * Gets the owner of this object. Returns null if the requester
     * doesn't have {@link Permission#ReadAcp} permission for this object or
     * owns the bucket in which it resides.
     *
     * @return The owner of this object. Returns null if the
     *         requester doesn't have permission to see object ownership.
     * @see S3ObjectSummary#setOwner(Owner)
     */
    public Owner getOwner() {
        return owner;
    }

    /**
     * Sets the owner of this object.
     *
     * @param owner The owner of this object.
     * @see S3ObjectSummary#getOwner()
     */
    public void setOwner(Owner owner) {
        this.owner = owner;
    }

    /**
     * Gets the storage class used by Amazon S3 for this object.
     *
     * @return The storage class used by Amazon S3 for this object.
     * @see S3ObjectSummary#setStorageClass(String)
     */
    public String getStorageClass() {
        return storageClass;
    }

    /**
     * Sets the storage class used by Amazon S3 for this object.
     *
     * @param storageClass The storage class used by Amazon S3 for this object.
     * @see S3ObjectSummary#getStorageClass()
     */
    public void setStorageClass(String storageClass) {
        this.storageClass = storageClass;
    }

    @Override
    public String toString() {
        return "S3ObjectSummary{" +
                "bucketName='" + bucketName + '\'' +
                ", key='" + key + '\'' +
                ", eTag='" + eTag + '\'' +
                ", size=" + size +
                ", lastModified=" + lastModified +
                ", storageClass='" + storageClass + '\'' +
                ", owner=" + owner +
                '}';
    }
}