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The AWS Java SDK for Amazon S3 module holds the client classes that are used for communicating with Amazon Simple Storage Service
/*
* Copyright 2010-2024 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.
*
* Portions copyright 2006-2009 James Murty. Please see LICENSE.txt
* for applicable license terms and NOTICE.txt for applicable notices.
*/
package com.amazonaws.services.s3.model;
import java.io.Serializable;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.internal.S3RequesterChargedResult;
/**
* Represents an object stored in Amazon S3. This object contains
* the data content
* and the object metadata stored by Amazon S3, such as content type,
* content length, etc.
*
* @see ObjectMetadata
*/
public class S3Object implements Closeable,Serializable, S3RequesterChargedResult {
private static final long serialVersionUID = 1L;
/** The key under which this object is stored */
private String key = null;
/** The name of the bucket in which this object is contained */
private String bucketName = null;
/** The metadata stored by Amazon S3 for this object */
private ObjectMetadata metadata = new ObjectMetadata();
/** The stream containing the contents of this object from S3 */
private transient S3ObjectInputStream objectContent;
/** The redirect location for this object */
private String redirectLocation;
private Integer taggingCount;
/**
* Indicates if the requester is charged for downloading the data from
* Requester Pays Buckets.
*/
private boolean isRequesterCharged;
/**
* Gets the metadata stored by Amazon S3 for this object. The {@link ObjectMetadata} object
* includes any custom user metadata supplied by the caller when the object was uploaded, as
* well as HTTP metadata such as content length and content type.
*
* @return The metadata stored by Amazon S3 for this object.
* @see S3Object#getObjectContent()
*/
public ObjectMetadata getObjectMetadata() {
return metadata;
}
/**
* Sets the object metadata for this object.
*
* NOTE: This does not update the object metadata stored in Amazon
* S3, but only updates this object in local memory. To update an object's
* metadata in S3, use {@link AmazonS3#copyObject(CopyObjectRequest)} to
* copy the object to a new (or the same location) and specify new object
* metadata then.
*
* @param metadata The new metadata to set for this object in memory.
*/
public void setObjectMetadata(ObjectMetadata metadata) {
this.metadata = metadata;
}
/**
* Gets the input stream containing the contents of this object.
*
*
* Note: The method is a simple getter and does not actually create a
* stream. If you retrieve an S3Object, you should close this input stream
* as soon as possible, because the object contents aren't buffered in
* memory and stream directly from Amazon S3. Further, failure to close this
* stream can cause the request pool to become blocked.
*
*
* @return An input stream containing the contents of this object.
*
* @see S3Object#getObjectMetadata()
* @see S3Object#setObjectContent(InputStream)
*/
public S3ObjectInputStream getObjectContent() {
return objectContent;
}
/**
* Sets the input stream containing this object's contents.
*
* @param objectContent
* The input stream containing this object's contents.
*
* @see S3Object#getObjectContent()
*/
public void setObjectContent(S3ObjectInputStream objectContent) {
this.objectContent = objectContent;
}
/**
* Sets the input stream containing this object's contents.
*
* @param objectContent
* The input stream containing this object's contents. Will get
* wrapped in an S3ObjectInputStream.
* @see S3Object#getObjectContent()
*/
public void setObjectContent(InputStream objectContent) {
setObjectContent(new S3ObjectInputStream(objectContent,
this.objectContent != null ? this.objectContent.getHttpRequest() : null));
}
/**
* Gets the name of the bucket in which this object is contained.
*
* @return The name of the bucket in which this object is contained.
*
* @see S3Object#setBucketName(String)
*/
public String getBucketName() {
return bucketName;
}
/**
* Sets the name of the bucket in which this object is contained.
*
* @param bucketName
* The name of the bucket containing this object.
*
* @see S3Object#getBucketName()
*/
public void setBucketName(String bucketName) {
this.bucketName = bucketName;
}
/**
* Gets the key under which this object is stored.
*
* @return The key under which this object is stored.
*
* @see S3Object#setKey(String)
*/
public String getKey() {
return key;
}
/**
* Sets the key under which this object is stored.
*
* @param key
* The key under which this object is stored.
*
* @see S3Object#getKey()
*/
public void setKey(String key) {
this.key = key;
}
/**
* Gets the redirect location for this object.
*
*/
public String getRedirectLocation() {
return this.redirectLocation;
}
/**
* Sets the redirect location for this object.
*
* @param redirectLocation
* the redirect location for that object.
*/
public void setRedirectLocation(String redirectLocation) {
this.redirectLocation = redirectLocation;
}
public Integer getTaggingCount() {
return taggingCount;
}
public void setTaggingCount(Integer taggingCount) {
this.taggingCount = taggingCount;
}
/**
* @see java.lang.Object#toString()
*/
public String toString() {
return "S3Object [key=" + getKey()
+ ",bucket=" + (bucketName == null ? "" : bucketName)
+ "]";
}
/**
* Releases any underlying system resources. If the resources
* are already released then invoking this method has no effect.
*
* @throws IOException if an I/O error occurs
*/
@Override
public void close() throws IOException {
InputStream is = getObjectContent();
if (is != null)
is.close();
}
@Override
public boolean isRequesterCharged() {
return isRequesterCharged;
}
@Override
public void setRequesterCharged(boolean isRequesterCharged) {
this.isRequesterCharged = isRequesterCharged;
}
}