topic Copy object content in Application Development and Automation Discussions

Copy object content

Former Member — Fri, 15 Sep 2006 09:22:40 GMT

Hallo

Does anyone know an easy way to copy the content of an complex object?

The simple opperator "=" would copy only the reference.

I search for a methode to backup an object and write it back later.

Thank you

Re: Copy object content

athavanraja — Sat, 16 Sep 2006 07:22:20 GMT

can you eloborate your question further? what do you mean by complex object?

Regards

Raja

Re: Copy object content

uwe_schieferstein — Sat, 16 Sep 2006 15:02:51 GMT

Hello Tobias

One possibility would be to serialize your object to XML using CALL TRANSFORMATION. In order to use this option the object must implement the interface IF_SERIALIZABLE_OBJECT (which is just a "marker", like in Java).

The other way is to have a look at class CL_OS_STATE. This class has a method CLONE (apparently that's what you are looking for). If look at the coding of this method you see how to clone object instance in SAP. Unfortunately, I do not yet understand how to use this class (and the corresponding interface; another interesting interface is IF_OS_CLONE) because I do not recommend to use the system-call directly.

I hope I could give you some hints how to solve your problem. And if you fully understand cloning I would appreciate your feedback.

Regards

Uwe

Re: Copy object content

Former Member — Mon, 18 Sep 2006 14:05:36 GMT

Hey great

that is the solution

Thank you Uwe.

The system call SYSTEM-CALL OBJMGR CLONE xxx TO xxx

does exactly what I'm searching for.

When you want to backup all attributes of an object, you can implement the interface IF_OS_CLONE within your class (no functionality just as marker) with following content:

SYSTEM-CALL OBJMGR CLONE ME TO RESULT.

Then you are able to clone your class:

DATA: go_backup TYPE REF TO z_cl_class.

go_backup ?= go_object->if_os_clone~clone( ).

In this example go_backup contains after cloning the same attribute values as go_object does, but represents an own instance.

Grüsse in das Nachbarland Schweiz.

Tobias

Re: Copy object content

uwe_schieferstein — Mon, 18 Sep 2006 14:08:50 GMT

Hello Tobias

Thanks for the feedback.

Regards

Uwe

PS: I am a German expatriate...