Where to put init code for static variables? (for UIImages)

I know that static variables are sorta a global, is that how UIImage is usually stored? What is the convention to declare UIImage variables that exists throughout the lifetime of the app? Where is a good place to init it if I choose to use static variables?

OK, in that case do something like this:
MyClass.m
#import "MyClass.h"
static UIImage *classImage;
@implementation MyClass {
+ (void)initialize {
classImage = <whatever to load image>;
Code like the above makes the 'classImage' variable work like a typical class variable. It is available to all instances of MyClass but is not visible to other classes. Like a 'private static' class variable in Java. Nothing goes in the header for this variable.
The 'initialize' method is called once the first time anything ever references MyClass. Kind of like a static initializer in Java. Notice the use of '+' instead of '-' for the method. The '+' makes it a class method instead of an instance method.
Does that help?
Message was edited by: RickMaddy

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Urgent where i put this code for delete

hi master
sir this code is right for my requirment but when i put on_delete event system not respons or not delete record
where i put this code for conditional deletion
this is my code
declare
     recno number;
begin
if :system.cursor_block='accbal' then
delete accbal where accid=:chartofacc.accid;
     go_block('chartofacc');
     next_record;
elsif :system.cursor_block='chartofacc' then
     select count(*) into recno from accbal where accid=:chartofacc.accid;
     if recno=0 then
     delete_record;
     go_block('chartofacc');
     previous_record;
     else
     message ('system found matching record then no delete master record');
     message ('system found matching record then no delete master record');
     end if;
end if;
end;
please gide me which event i use
thanking you
aamir

Hello,
The ON-DELETE triger fires only after a COMMIT statment and only for those records that have been deleted in the block.
Francois

Where to put java code - Best Practice

Hello. I am working with the Jdeveloper 11.2.2. I am trying to figure out the best practice for where to put code. After reviewing http://docs.oracle.com/cd/E26098_01/web.1112/e16182.pdf it seemed like the application module was the preferred spot (although many of the examples in the pdf are in main methods). After coding a while though, I noticed that there were quite a few libraries imported, and wondered whether this would impact performance.
I reviewed postings on the forum, especially Re: Access service method (client interface) programmatically . This link mentions accessing code from a backing bean -- and the gist of the recommendations seems to be to use the data control to drag it to the JSF, or use the bindings to access code.
My interest lies in where to put java code in the first place; In the View Object, Entity Object, and Am object, backing bean.....other?
I can outline several best guesses about where to put code and the pros and cons:
1. In the application module
Pros: Centralized location for code makes development and support more simple as there are not multiple access points. Much like a data control centralizes services, the application module can act as a conduit for different pieces of code you have in objects in your model.
Cons: Everything in one place means the application module becomes bloated. I am not sure how memory works in java -- if the app module has tons of different libraries are they all called when even a simple query re-execute method is called? Memory hog?
2. Write code in the objects it affects. If you are writing code that accesses a view object, write it in a view object. Then make it visible to the client.
pros: The code is accessed via fewer conduits (for example, I would expect that if you call the application module from a JSF backing bean, then the application module calls the view object, you have three different pieces of code --
conts: The code gets spread out, harder to locate etc.
I would greatly appreciate your thoughts on the matter.
Regards,
Stuart
Edited by: Stuart Fleming on May 20, 2012 5:25 AM
Edited by: Stuart Fleming on May 20, 2012 5:27 AM

First point here is when you say "where to put the java code" and you're referring to ADF BC, the point is you put "business logic java code" in the ADF Business Components. It's fine of course to have Java code in the ViewController layer that deals with the UI layer. Just don't put business logic in the UI layer, and don't put UI logic in the model layer. In your 2 examples you seem to be considering the ADF BC layer only, so I'll assume you mean business logic java code only.
Meanwhile I'm not keen on the term best practice as people follow best practices without thinking, typically best practices come with conditions and people forget to apply them. Luckily you're not doing that here as you've thought through the pros and cons of each (nice work).
Anyway, back on topic and off my soap box, as for where to put your code, my thoughts:
1) If you only have 1 or 2 methods put it in the AppModuleImpl
2) If you have hundreds of methods, or there's a chance #1 above will morph into #2, split the code up between the AppModuleImpl, ViewImpl and ViewRowImpls. Why? Because your AM will become overloaded with hundreds of methods making it unreadable. Instead put the code where it should logically go. Methods that work on a specific VO row go into the associated ViewRowImpl, methods that work across rows in a VO go into the ViewImpl, and methods that work across VOs in the associated AppModuleImpl.
To be honest which you ever option you choose, one thing I do recommend as a best practice is be consistent and document the standard so your other programmers know.
Btw there isn't an issue about loading lots of libraries/imports into a class, it has no runtime cost. However if your methods require lots of class variables, then yes this will have a memory cost.
On a side note if you're interested in more ideas around how to build ADF apps correctly think about joining the "ADF EMG", a free online forum which discusses ADF architecture, best practices (cough), deployment architectures and more.
Regards,
CM.

Architecture question...where to put the code

Newbie here, so please be gentle and explicit (no detail is
too much to give or insulting to me).
I'm hoping one of you architecture/design gurus can help me
with this. I am trying to use good principals of design and not
have code scattered all over the place and also use OO as much as
possible. Therefore I would appreciate very much some advice on
best practices/good design for the following situation.
On my main timeline I have a frame where I instantiate all my
objects. These objects refer to movieClips and textFields etc. that
are on a content frame on that timeline. I have all the
instantiation code in a function called initialize() which I call
from the content frame. All this works just fine. One of the
objects on the content frame is a movieClip which I allow the user
to go forward and backward in using some navigation controls.
Again, the object that manages all that is instantiated on the main
timeline in the initialize() function and works fine too. So here's
my question. I would like to add some interactive objects on some
of the frames of the movieClip I allow the user to navigate forward
and backward in (lets call it NavClip) . For example on frame 1 I
might have a button, on frame 2 and 3 nothing, on frame 4 maybe a
clip I allow the user to drag around etc. So I thought I would add
a layer to NavClip where I will have key frames and put the various
interactive assets on the appropriate key frames. So now I don't
know where to put the code that instantiates these objects (i.e.
the objects that know how to deal with the events and such for each
of these interactive assets). I tried putting the code on my main
timeline, but realized that I can't address the interactive assets
until the NavClip is on the frame that holds the particular asset.
I'm trying not to sprinkle code all over the place, so what do I
do? I thought I might be able to address the assets by just
providing a name for the asset and not a reference to the asset
itself, and then address the asset that way (i.e.
NavClip["interactive_mc"] instead of NavClip.interactive_mc), but
then I thought that's not good since I think there is no type
checking when you use the NavClip["interactive_mc"] form.
I hope I'm not being too dim a bulb on this and have missed
something really obvious. Thanks in advance to anyone who can help
me use a best practice.

1. First of all, the code should be:
var myDraggable:Draggable=new Draggable(myClip_mc);
myDraggable.initDrag();
Where initDrag() is defined in the Draggable class. When you
start coding functions on the timeline... that's asking for
problems.
>>Do I wind up with another object each time this
function is called
Well, no, but. That would totally depend on the code in the
(Draggable) class. Let's say you would have a private static var
counter (private static, so a class property instead of an instance
property) and you would increment that counter using a
setInterval(). The second time you enter the frame and create a new
Draggable object... the counter starts at the last value of the
'old' object. So, you don't get another object with your function
literal but you still end up with a faulty program. And the same
goes for listener objects that are not removed, tweens that are
running and so on.
The destroy() method in a custom class (=object, I can't
stress that enough...) needs to do the cleanup, removing anything
you don't need anymore.
2. if myDraggable != undefined
You shouldn't be using that, period. If you don't need the
asset anymore, delete it using the destroy() method. Again, if you
want to make sure only one instance of a custom object is alive,
use the Singleton design pattern. To elaborate on inheritance:
define the Draggable class (class Draggable extends MovieClip) and
connect it to the myClip_mc using the linkage identifier in the
library). In the Draggable class you can define a function unOnLoad
(an event fired when myClip_mc is removed using
myClip_mc.removeMovieClip()...) and do the cleanup there.
3. A destroy() method performs a cleanup of any assets we
don't need anymore to make sure we don't end up with all kinds of
stuff hanging around in the memory. When you extend the MovieClip
Class you can (additionally) use the onUnLoad event. And with the
code you posted, no it wouldn't delete the myClip_mc unless you
program it to do so.

Where to put javascript code?

Hello,
I am trying to set some columns in a list as "read-only" and is using the following code:
<script type=”text/javascript”>
function SetReadOnly()
var elements=document.getElementById(’4_ctl00_ctl00_TextField’);
elements.readOnly=true;
_spBodyOnLoadFunctionNames.push(“SetReadOnly()”);
</script>
But I am not sure where to put the code in. Should I put it in the space in Content Editor Web Part,
or through a link to a txt file, or in "Edit HTML"? I've tried them but none works.
Thanks a lot!
Patrick

You can try this:
1) Open your Sharepoint List. Go to List edit view.
2) On right side of Ribbon you will find "Form Web Parts" option as shown in figure.
3) Choose your List form which you want to edit.
4) Now you can add web part in new window.
5) Add Content Editor Web part.
6) In content editor web part add the path of your "txt" file in which you have written your script, for eg.
<!DOCTYPE html>
<html>
<body>
<script type=”text/javascript”>
function SetReadOnly()
var elements=document.getElementById('4_ctl00_ctl00_TextField');
elements.readOnly=true;
_spBodyOnLoadFunctionNames.push("SetReadOnly()");
</script>
</body>
</html>
I haven't tried this method so I am not sure but hope it works...:D
***If my post is answer for your query please mark as answer***
***If my answer is helpful please vote***

Where to put Validation Code?

Up until now, Im still having second-thoughts of where to put validation code when setting attributes of an entity.
Right now I have created lots of custom validators --(implement JbovalidatorInterface) that calls stored procedures to validate the value entered. But sometimes, i just use a ViewObject and query it on the setterAttribute method of the Entity and just manually throw a JboException of the value is invalid based on some business rule.
Question is, what are the best practices where to put validation codes? do we have to be strict that we always put all validations on Validators or are we free to just throw JboExceptions anywhere on the BC classes' code.
regards,
Anton

1. The reason I have a custom validator and I don't normally use the built in declarative validators is that the error message generated when the validation fails is fixed, only one message. I decided to have create a custom validator is that I need to test a one attribute for many cases in each case should produce a distinct error message. So if I use the built in validators, I would have to create lots of built in validators for that single attribute only. (and i have lots of entities and lots of attributes that needs business rule validation). So, I decided to create a custom validator, that calls the stored procedure, the stored procedure takes care of all test cases, for that attribute only, and I can return a dynamic error message depending on the test case that failed. What do you think about the approach?
It's a little extra work to create a reusable validator class that will only be used once, but whether you do it that way or encapsulate the call in a helper class that your one-off method validator code delegates too, it seems similar to me. So it's more of a stylistic choice for you which you like better. Now, if your reusable validator were enable to encapsulate
2. When I said anywhere; I meant inside the setterAttribute methods on the Entity and on the ViewRowImpl, orThe ViewImpl class or inside a method on an ApplicationModule?
Rather than writing code in the setAttribute, I recommend using attribute-level method validators. This makes it more clear where all your validation code lives.
I don't recommend performing validation in the view object level since entity objects are the component in the system that are tasked with handling validation. It would be easy to circumvent view level validation checks unless you make a lot of assumptions about exactly how your application is working.
3. One other issue is that Validator methods are for validation purposes only. So its not a good idea to put in attribute setters to other attributes inside there. So you put the attribute setter logic outside of the validator usually inside the setAttribute() just after validator returns. But there are cases that is very straightfoward to put validation logic inside the setAttribute; meaning, inside the setAttribute() method, I test for a condition, if it fails, just throw a JboException, if its true, continue with the otherAttributes setter logic.
Whether attribute setting of other attributes is performed in a setter method or in an attribute-level method validator, either way you will need conditional logic to avoid going into a validation "loop" (which eventually will throw an exception if after 10 attempts the object is still not valid at posting time.

Any event in lov where I put my code

hi master
Sir
Any event in lov where I put my code
Such as after selection value my curser move to next text box and total all bill amount
For example
When press enter
Begin;
Select sum(billamount) into :billamount from billtable where clientno=:lov.values;
End;
Please give me idea
Thanking you
Aamir

KEY-LISTVAL trigger:
if Show_LOV(<yuo_lov_name>)
then
Select sum(billamount) into :billamount from billtable
where clientno=:<CONTROL.values>;
end if;
<CONTROL.values> is a LOV returning item(s)

Where to put the code for dynamically change dataprovider

I have a table bound to dataprovider1 by default ( by the SJC ). In the same page, I also have a dataprovider2 which is for the same fields of the same table of dataprovider1. The only different is to put some criteria on one field ( like F_D1 = '5' ) so that one provider will show all rows, the other just some rows.
The code to change the dataprovider is as follows :
tableRowGroupWorksheet.setValueBinding("sourceData", getApplication().createValueBinding("#{WorksheetPage.dataprovider2}") );
If I put this code into some button_action() and then I click that button, then the page displays the corresponding data just fine.
But if I put this code in either preprocess or prerender, then things seems messed up : the number of pages is for data of dataprovider1, but when I click button Next of the table then it shows the number of pages of dataprovider2. ( I also try to put it in init but this does not help either ).
I need this code to be run when this page is selected but right now it requires me to click on a button :(
The reason I need it runs automatically is because of the logic generated from the previous page.
Thanks for your advive,
Vu

After re-reading the life-cycles of JSF and the injected phases of SJC, I think I know why it does not work when the page is first called. In this case, AplyRequestValue phase is skipped therefore preprocess is never called. Also in this case, the component tree, with binding, validators, ... is only built in the Render Response phase and this phase is right after PreRender is called therefore the binding code I put in prerender is overwritten by Render Response.
When using a button action, the component tree is already built and not rebuit under Render Response, therefore that code is not overwritten. Also in this case, preprocess is called so putting that code under either preprocess or prerender will work.
Please correct me.
Thanks,
Vu

How to use the dynamical or static variable for ESSBASE cube name?

Hi Experts,
When I import ESSBASE Cube into physical layer, the cube name from ESSBASE is created automatically, such as H_Sales.
I want to use the the static or dynamical variable for replacing the external name. So I try to create the static variable in RPD,such as cubeName, and use the following code
'VALUEOF(cubeName)' into the textbox of external name.
However, when I view the report in answer, it will generate the error message: Database VALUEOF(cubeName) does not exist.
Is it possible to implement this functionality?
Thanks..

Hi,
use <%=odiRef.getSchemaName("D")%>
D as parameter if it is the Data Schema or W if you need the schema from Work Schema
Your command will be like:
select <%=odiRef.getSchemaName("D")%>.GER_LOT_EXEC_ODI('Fluxo', 1, 'C') FROM DUAL
Works?
Cezar Santos
http://odiexperts.com

Static variable for debugging mode?

Hello I want to have a debugging mode for my application...
Its jsp, servlets..
If I have one static variable String called debug and set it to true then it should print all System.out. stuff in application... otherwise it shlould not...
Do I have ot have this static variable defined in every jsp and servlet?

try something like this
public Class AppControl{
public static boolean debugMode;
public static void setDebugMode(boolean flag){
this.debugMode = flag;
public static boolean ifDebug(){
return this.debugMode;
In your JSP just do
if (AppControl.isDebug()) {
//print debug
}

Where to put the code?

Hi All
I'm using anchors in flash, and they work fine. I can add an anchor to a URL and it'll jump to the right frame in a flash document, no problem.
Apparently (according to Ned), the problem is that other functions stop working if I've put the code on frame1 for example but jump to frame5 with an anchor.
I thought that a function on frame1 would be accessible anywhere on the timeline. Is this correct? If not, how do I make a global type function?
Thanks for any ideas

If you've got an extra keyframe, simply remove it using Shift + F5.
Having said that though, when I try to click on a link to the same swf
file but with a different anchor, the link doesn't work unless I
navigate away to another swf file and then come back. It seems as though
it thinks it's already at the right place or just ignores the link.
Yes, that's another subject.
You need to explain in details, what you're doing and how you've
done it. Show some of your code or a link to the swf file.
Start a new thread for this..
Your primary answer has been answered here.
Best regards
Peter

Best Practice for managing variables for multiple environments

I am very new to Java WebDynPro and have a question
concerning our deployments to Sandbox, Development, QA,
and Production environments.
What is the 'best practice' that people use so that if
you have information specific to each environment you
don't hard-code it in your Java WebDynPro code.
I could put the value in a properties file, but how do I
make that variant? Otherwise I'd still have to make a
change for each environment to the property file and
re-deploy. I know there are some configurations on the
Portal but am not sure if that will work in my instance.
For example, I have a URL that varies based on my
environment. I don't want to hard-code and re-compile
for each environment. I'd prefer to get that
information on the fly by knowing which environment I'm
running in and load the appropriate URL.
So far the only thing I've found that is close to
telling me where I'm running is by using a Parameter Map
but the 'key' in the map is the URL not the value and I
suspect there's a cleaner way to get something like that.
I used Eclipse's autosense in Netweaver to discover some
of the things available in my web context.
Here's the code I used to get that map:
TaskBinder.getCurrentTask().getWebContextAdapter().getRequestParameterMap();
In the forum is an example that gets the IP address of
the site you're serving from. It sounds like it is going
to be or has been deprecated (it worked on my system
right now) and I would really rather have something like
the DNS name, not something like an IP that could change.
Here's that code:
String remoteHost = TaskBinder.getCurrentTask().getWebContextAdapter().getHttpServletRequest().getRemoteHost();
Thanks in advance for any clues you can throw my way -
Greg

Hi Greg:
I suggest you that checks the "Software Change Managment Guide", in this guide you can find an explication of the best practices to work with a development infrastructure.
this is the link :
http://help.sap.com/saphelp_erp2005/helpdata/en/83/74c4ce0ed93b4abc6144aafaa1130f/frameset.htm
Now if you can gets the ip of your server or the name of your site you can do the next thing:
HttpServletRequest request = ((IWebContextAdapter) WDWebContextAdapter.getWebContextAdapter()).getHttpServletRequest();
String server_name = request.getServerName();
String remote_address = request.getRemoteAddr()
String remote_host = request.getRemoteHost()
Only you should export the servlet.jar in your project properties > Build Path > Libraries.
Good Luck
Josué Cruz

Ready for Input Variables for Multiple Queries in I_T_VAR_RANGE

Hi
I created Web template which contains multiple views/queries. Two views/queries contain Ready for Input Variables. I have custeomer exit code for this Web template. I wrote code by using Ready for input variable which pass to customer exit code. But the variables which contain in two views/queries not appearing in I_T_VAR_RANGE. The two variables belongs to different views and I required those variables. please find below code:
    WHEN 'ZVBCUST'.
      LOOP AT i_t_var_range INTO w_var_range WHERE vnam = 'ZVAR1'.
        g_soldto = w_var_range-low.
      ENDLOOP.
      LOOP AT i_t_var_range INTO w_var_range WHERE vnam = 'ZVAR2'
        g_zvbsshto = w_var_range-vnam.
        g_shipto = w_var_range-low.
      ENDLOOP.
The above 'ZVAR1' is ready for input variable which belongs to one Query and below 'ZVAR2' is other ready for input variable which belongs to second query. I required these two at a time when customer exit variable 'ZVBCUST' executes.
But in I_T_VAR_RANGE only one variable appears when I execute Web Template . Kindly help me in this regard
Thanks
luci

Hi,
First thing is to how you have defined your variable such as
Customer exit or
Replacement path or
Manual input etc..
If you want your variable filled through the exit select Customer Exit, then you have to look at the variable options such as Single value or range. According to your definition you have code as you defined such as wa_range-opt = 'BT' or 'EQ'.
Next..
In CMOD -> your project -> EXIT_SAPLRRS0_001 -> include 'ZXRSRU01' ->
ISTEP = 1 -> before the variable pop up will be filled by the exit
when 'your variable'
your code
ISTEP = 2 -> after the variable pop up i.e after running your selections, calculates the values for your variables after selection screen execution.
when 'your varaible'
your code
ISTEP = 3 -> Validation purpose and message handling purpose
when 'your variable'
your code

Which Function Should i use for static values for a an array[] in BPM 11g.

Hi Experts,
Please throw some light on this..
I've a requirement which is bugging me..
How do i assign a static value to a array in BPM11g in script activity. What exactly function do i need to use to assign a Static value for an Array []
I been doing like taking the business object as a Array thats fine. But how can i set a static value in BPM 11g.
Iam using BPM 11.1.1.6 version..
Regards,
Pavan

Hi Pavan,
Here's one approach, but it assumes you're comfortable with XSDs and XML.
Know this is light on detail, but without knowing what your array looks like it's the best I can do. Here's what you'd do from a high level:
1. Create an XSD that defines the structure of your array.
2. Create the XML that represents the static item you want to add to the array.
3. Create a process variable based on the XSD that defined the array.
4. Add a Script activity.
5. Open the "Implementation" tab -> click "Data Associations".
6. On the right, expand the folder under your process -> drag the XML icon in the upper right corner on the array variable -> paste your XML into the XML literal panel.
Hope this gets you going,
Dan

Issue with F4 help for the variables for the 0CALWEEK and 0CALMONTH

We have custom IOs which refers to 0CALWEEK and 0CALMONTH.In the report we have variables on the custom IOs.For these variables F4 help does not giving any values .I tested with 0CALWEEK also. For the 0CALWEEK also F4 help does not working..Please help me on this issue.The variable I haveused d to test with 0CALWEEK is 0S_CWEEK.
Edited by: Sudhakar Are on Jul 6, 2010 4:17 PM

Hi Pramod,
I don't know how it is done in infoset. But if you have a context node and attribute for the field which is displayed in the view, create a custom dictionary search help for the field you want. Design the search help as per your requirements (what fields to be displayed etc..).
In the context attribute of that field property, select 'Dictionary search help' in the Input help mode. Enter the name of your custom search help here.
Thanks & Regards,
Satheesh.

Where to put init code for static variables? (for UIImages)

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