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Supply function,.....

Former Member
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Hi All,

What is actually Supply function do ?

In what contexts we make use of Supply function ?

Appreciate your inputs.

Regards,

Anil Kumar

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
0 Kudos

Hi,

Anil Kumar Venkatappa

Supply functions are executed when necessary to initialize elements in the context.

Each context node of a controller can be assigned a supply function. This supply

function is called by the runtime when the data of the context node is used. This is the case

when a UI element is to be displayed for the first time with the data of the corresponding

context, for example.

In general, the supply function is called when one or more elements of a context node are

accessed and when

● the context node is not filled yet or is initial, or

● the context node has been invalidated in a previous step.

The supply function is especially useful in combination with singleton nodes

The values of subnode elements of the type Singleton depend on the element of the parent node

to which the lead selection is currently assigned. If the lead selection is changed by the user,

the supply function can access the new lead selection element and recalculate the values of

the subnode elements accordingly.

Please find an eg for supply function in this sample eg:

Web Dynpro for ABAP: Tutorial 4 – Display Bookings of Selected Flight ,

application name :ZZ_00_BOOKINGS

Cheers,

Mary

Please award points if useful.

Answers (2)

Answers (2)

Former Member
0 Kudos

Hi,

A method of type Supply Function is always called the first time a controller is called,

and is used to provide the controller context with initial data.

Refer the below links.

[Supply Function|http://help.sap.com/saphelp_nw04s/helpdata/en/f1/177741adb7167de10000000a155106/frameset.htm]

Hope it will help.

Thanks..

Former Member
0 Kudos

Hello,

the supply function suplies the elements of a context. You should use this whenever you have and context that always needs to be filled.

I suggest you to read the following: [/people/thomas.szcs/blog/2006/12/13/web-dynpro-abap--singleton-context-nodes-revisited], [https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/4810] [original link is broken] [original link is broken] [original link is broken];, [http://help.sap.com/saphelp_nw04/helpdata/en/86/7fcf3d4f902d10e10000000a114084/frameset.htm].

Regards,