Overview

This document provides an overview of APIs and SDK code samples related to object movement.

Moving an Object

Object movement involves copying the source object to the target location and deleting the source object.

Since COS uses the bucket name (Bucket) and object key (ObjectKey) to identify objects, moving an object will change the object identifier. Currently, COS’s Java SDK does not provide a standalone API to change object identifiers. However, you can still move the object with a combination of basic operations (object copy and object delete).

For example, if you want to move the picture.jpg object to the “doc” directory that is in the same bucket (mybucket-1250000000), you can copy the picture.jpg to the “doc” directory (making the object key doc/picture.jpg) and then delete the source object.

Likewise, if you need to move picture.jpg in the mybucket-1250000000 bucket to another bucket myanothorbucket-1250000000, you can copy the object to the myanothorbucket-1250000000 bucket first and then delete the source object.

Sample code

Objective-C

QCloudCOSXMLCopyObjectRequest* request = [[QCloudCOSXMLCopyObjectRequest alloc] init];

// Bucket name in the format: `BucketName-APPID`
request.bucket = @"examplebucket-1250000000";

// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "dir1/object1"
request.object = @"exampleobject";

// Source bucket containing the file; the current account needs to have access permission for the bucket, or the bucket should have public-read permission enabled.
request.sourceBucket = @"sourcebucket-1250000000";

// Name of the source file
request.sourceObject = @"sourceObject";

// APPID of the source file
request.sourceAPPID = @"1250000000";

// Source region
request.sourceRegion= @"COS_REGION";

[request setFinishBlock:^(QCloudCopyObjectResult* result, NSError* error) {
   // outputObject contains information such as the ETag or custom headers in the response.
   if(!error){
       QCloudDeleteObjectRequest* deleteObjectRequest = [QCloudDeleteObjectRequest new];

       // Source bucket containing the file; the current account needs to have access permission for the bucket, or the bucket should have public-read permission enabled.
       deleteObjectRequest.bucket = @"sourcebucket-1250000000";

       // Name of the source object, which is also the full path of the object in COS. If the object is in a directory, the path should be "dir1/object1".
       deleteObjectRequest.object = @"sourceObject";

       [deleteObjectRequest setFinishBlock:^(id outputObject, NSError *error) {
           // `outputObject` contains all the HTTP response headers
           NSDictionary* info = (NSDictionary *) outputObject;
       }];

       [[QCloudCOSXMLService defaultCOSXML] DeleteObject:deleteObjectRequest];
   }
}];

// Note that for cross-region movement, the region used for `transferManager` must be the region of the destination bucket.
[[QCloudCOSTransferMangerService defaultCOSTransferManager] CopyObject:request];

Note：

For the complete sample, go to GitHub.

Swift

let copyRequest =  QCloudCOSXMLCopyObjectRequest.init();

// Bucket name in the format: `BucketName-APPID`
copyRequest.bucket = "examplebucket-1250000000";

// Object key, i.e., the full path of a COS object. If the object is in a directory, the path should be "dir1/object1".
copyRequest.object = "exampleobject";

// Source bucket containing the file; the current account needs to have access permission for the bucket, or the bucket should have public-read permission enabled.
// Bucket name in the format: `BucketName-APPID`
copyRequest.sourceBucket = "sourcebucket-1250000000";

// Object key, i.e., the full path of a COS object. If the object is in a directory, the path should be "dir1/object1".
copyRequest.sourceObject = "sourceObject";

// APPID of the source file
copyRequest.sourceAPPID = "1250000000";

// Source region
copyRequest.sourceRegion = "COS_REGION";

copyRequest.setFinish { (copyResult, error) in
   if let copyResult = copyResult {
       // ETag of the file
       let deleteObject = QCloudDeleteObjectRequest.init();

       // Bucket name in the format: `BucketName-APPID`
       deleteObject.bucket = "sourcebucket-1250000000";

       // Object key, i.e., the full path of a COS object. If the object is in a directory, the path should be "dir1/object1".
       deleteObject.object = "sourceObject";

       deleteObject.finishBlock = {(result,error)in
           if let result = result {
                   // "result" contains response headers.
           } else {
                 print(error!);
             }
       }
       QCloudCOSXMLService.defaultCOSXML().deleteObject(deleteObject);
   } else {
       print(error!);
   }

}
// Note that for cross-region movement, the region used for `transferManager` must be the region of the destination bucket.
QCloudCOSTransferMangerService.defaultCOSTransferManager().copyObject(copyRequest);

Note：

For the complete sample, go to GitHub.