Global variable in interface IF_EX_ME_PROCESS_PO_CUST

Hi experts,
I have implemented BADI ME_PROCESS_PO_CUST.
I have written my code in method PROCESS_ITEM.
I want know how can I declare a global variable for that interface so that I can access that variable across different methods (PROCESS_HEADER) of same interface.
Thanks,
Sachin

An implementing class is generated as well, in which you can declare attributes.

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Vinh Pham:
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How to use a variable between interfaces or class?

Hello All;
Far by now I can say that the forum is very helpful for me. Thanks for all the people who have the time and generosity to help our problems. Thank you.
Unfortunately I have a problem <Again :( >
I want to use a variable in two different *.java files.
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Edited by: Ömer K. on Apr 10, 2012 12:43 AM

I didn't bother reading the code, since you didn't format it.
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How do I store VI References in global variables and access them later

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I'm not sure what you mean by "a later time", but a VI reference will remain valid as long as the VI is in memory. If you don't unload the VIs, the references will remain valid.
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The description I've given will only be usable in certain instances (and it has its intricacies), but you didn't really give any details about what you're actually trying to accomplish.
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How to declare a global variable from a PL/SQL package

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riedelme wrote:
thanks for the info. Your scope explanation makes sense even though it is not intuitive to me. I think the usage of package variables should be supported by SQL (they're just values to be copied) Maybe look at it from another language's perspective. You want to use a global PL package variable in Java/C#/Delphi/VB/etc. How would you do it?
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3> end;
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user13415143 wrote:
Hi. I have created a function (Retrieve_SerialNo) which returns a variable, which I use throughout my package. I would like to assign this variable as a global variable to be used by all functions and procedures in the package.All variables have scope or "visibility". A variable defined in a procedure is only visible within that procedure.
A variable defines in a package body. is visible within that package body (i.e. procedures and functions in that package body can "see" that variable.
A variable defined in the package definition? Well, who can see the definitions of procedures and function in a a package header/definition? Everyone else basically (other PL/SQL packages and procedures and functions). So this is also true for variables defined in the package interface. These are global variables that not only can be used by the code in that package's body, but also can be used by other packages and PL/SQL code.
So when you create a global variable you need to decide on its scope:
- define it in package header for global usage in all PL/SQL code
- define it in package body for global usage within that package only
CREATE OR REPLACE PACKAGE BODY Supply_Item_Interface AS
..snipped..Ugly code as there is no need to use an explicit cursor if returning a value from a single row. Also buggy code. If there are multiple rows returned by the cursor, the function returns the serial of the last random row. How does this make sense?
This is what I would expect to see from a function like this. You pass it a unique identifier and it returns the applicable attribute (column) value for it.
E.g.
create or replace function GetSerialNo( orderNo number ) return number is
serialNo number;
begin
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from spare_parts s,
       orders o
where s.serial_code = o.serial_code
and o.order_no = orderNo;
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exception when NO_DATA_FOUND then
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Global variable in BADI methods..

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How can i declare a global variable in BADI method ,for example " Count type I".Can any one let me know ...
Regards,
Veera

Hi,
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[email protected] wrote:
Hi!
I want to build labview application into dll and use vc++ to call
it.The labview program is a little complex,for it has many interface to
vc++ and has while loop in it.When I use vc++ to call it,I must use
vc++ to do other things.That is to say,vc++ creates a new thread to
provide for the labview dll to run.the vc main thread goes on to other
things.But the vc++ main thread must communicate with the labview dll
by setting its inputs' parameters and get the results of running
labview dll.Can you advise me how to realize it?
   I
think global variable of labview could be useful when realizing the
communication betweeb vc thread and labview dll.So I want to ask
whether the labview global variable could also be built into dll and
use it.Could you please tell me how to realize my idea?
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You
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Rolf Kalbermatter
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a division of Test & Measurement Solutions

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Innka wrote:
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What is the difference between using a global variable,passing a valuee and using a reference?

I have created a project that consists of several VIs. Only the main VI has a front panel and the others perform functions. The function VIs are dependent on controls on the main VI's front panel. I have several ways of passing the value of the controls. One is to use a global variable and just place it on the dependent VIs. Another option is to strictly connect the terminal from the control to a VI connector block and pass the value directly. My last option is to create a reference of the control and reference it inside the dependent VIs, but this would also require connections to be made to the VI block.
What are the advantages/disadvantages of these options?
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5thGen wrote:
I have created a project that consists of several VIs. Only the main VI has a front panel and the others perform functions. The function VIs are dependent on controls on the main VI's front panel. I have several ways of passing the value of the controls.
1) One is to use a global variable and just place it on the dependent VIs.
2) Another option is to strictly connect the terminal from the control to a VI connector block and pass the value directly.
3) My last option is to create a reference of the control and reference it inside the dependent VIs, but this would also require connections to be made to the VI block.
What are the advantages/disadvantages of these options?
-Stephen
1) Globals are evil and introduce race conditions.
2) The sub-VI only get the value when it was called and updates that occur while the sub-VI is runing are not sensed by the sub-VI
3) This uses property node "value" or "value signaling" both of which run the user interface thread which is single-threaded and you incur a thread swap hit to performance. You also have a potential for race conditions.
The are various methods for sharing dat to/from sub-VI which include Queues and Action Engines.
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Ben Rayner
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I have troubles when I use a global variable to transfer the parameter to a first Vi (user interface) to a second vi (acquisition interface).
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This 2 Vis are include to a master Vi who synchronized by the error bus.
The problem :
For the first use, the user parameter is transfer to the global variable but the acquisition vi read the old parameter. In the second use, acquisition vi read the first use parameter.
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VIEW THE PROBLEM : (I use event structure
Attachments:
Problem.zip ‏52 KB

Labview uses the dataflow to chain the execution. That is, as soon as one item of data is ready is is presented to the next stage.
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A global variable.

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Global variable in interface IF_EX_ME_PROCESS_PO_CUST

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