topic Re: populating base structure from persistent object in Application Development and Automation Discussions

populating base structure from persistent object

mike_mcinerney — Tue, 10 Jun 2008 21:25:07 GMT

Let's say I create a peristent class, ZCL_PWIDGET.

ZCA_PWIDGET and ZCB_PWIDGET are created on my behalf.

Let's say I map data in all the fields from table ZWIDGET .

ZWIDGET has 1 Key field, KEY1, and five data fields, C1-C5.

I think I can retrieve data from the tables and create a runtime instance of my class using


DATA:  this_widget TYPE REF TO zcl_pwidget.
this_widget=>agent->get_persistent( I_KEY1= '1234' ).

Can someone tell me how to populate wa_widget ( I think I can use a map attributes call, but I don't quite understand how).


Data : wa_widget type zwidget.

Thanks...

...Mike

Re: populating base structure from persistent object

naimesh_patel — Tue, 10 Jun 2008 21:49:35 GMT

In your persistence class you must have the SET_ and GET_ methods.

Use GET_C1 method to get the value of the field C1.

Like:

wa_widget-c1 = this_widget=>agent->get_c1( ).

Regards,

Naimesh Patel

Re: populating base structure from persistent object

mike_mcinerney — Wed, 11 Jun 2008 12:24:22 GMT

Thanks, but I'm looking for a way to populate wa_widget in one fell swoop.

Is there a way to populate all (or most) of the fields of wa_widget at one time, like...


wa_widget = this_widget->get_ALL_fields_from_persistent_mapping

How do folks do this in practice ?

Thanks...

...Mike

Re: populating base structure from persistent object

Former Member — Thu, 12 Jun 2008 01:54:23 GMT

Don't believe that a method that will return all fields will be generated for you. If you want something like that, you can create your own custom method in the class that will just call the necessary GET methods for you and return the values.