topic me in Application Development and Automation Discussions

me

Former Member — Thu, 22 Feb 2007 11:29:47 GMT

hi,

i just want to know if 'me' becomes an instance/object (self reference) when there is a create object of the class happens.

in this case, create object in start-of-selection, after the create object, client_ref is 9<client>, when debug steps in client class, 'me' is 9<client>.

if there is no create object in start-of-selection of the class then 'me' is unidentified and not an instance. correct?

thanks

REPORT self_reference.

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CLASS client DEFINITION

----

........ *

----

CLASS client DEFINITION.

PUBLIC SECTION.

DATA name(10) TYPE c VALUE 'master' READ-ONLY.

METHODS create_server.

ENDCLASS.

----

CLASS server DEFINITION

----

........ *

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CLASS server DEFINITION.

PUBLIC SECTION.

METHODS acknowledge IMPORTING creator TYPE REF TO client.

PRIVATE SECTION.

DATA name(10) TYPE c VALUE 'servant'.

ENDCLASS.

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CLASS client IMPLEMENTATION

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........ *

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CLASS client IMPLEMENTATION.

METHOD create_server.

DATA server_ref TYPE REF TO server.

CREATE OBJECT server_ref.

CALL METHOD server_ref->acknowledge EXPORTING creator = me.

ENDMETHOD.

ENDCLASS.

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CLASS server IMPLEMENTATION

----

........ *

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CLASS server IMPLEMENTATION.

METHOD acknowledge.

DATA name TYPE string.

name = creator->name.

WRITE: me->name, 'created by', name.

ENDMETHOD.

ENDCLASS.

DATA client_ref TYPE REF TO client.

START-OF-SELECTION.

CREATE OBJECT client_ref.

CALL METHOD client_ref->create_server.

Re: me

Former Member — Thu, 22 Feb 2007 11:36:50 GMT

Yes you are right .no create object in start-of-selection of the class then 'me' is unidentified because if class server inherits class client and u do create of for server automatically within the constructor method you can call the super contructor through in that case you don't have use create object for client .

But in this case where you have two different classes .

You have do a create object .

Please reward if useful.

Re: me

Chaitanyat — Thu, 22 Feb 2007 11:56:30 GMT

hi,

"me" is an implicit object/instance that comes into picture when ever a class is instantiated. This is used for self reference. If at all a class is not instantiated then "me" would not have any significance.

regards,

chaitanya.

Message was edited by:

Chaitanya