Overriding through Globals

Message from Drane, Matthew via eLinkCan someone help??I know that if you need to override some functionality, you can orphan offthe child into your module, override the feature, and then add into the yourStartup script something like:$GlobalReferencetoOldFeature = $GlobalReferencetoNewFeaturebut if there is no reference to the old feature in the Globals, how do youreference it correctly?I need to add something into the WEBNOTIFY > NotifyRequestHandler >Interests > FormatSpecificNode feature script, butWebNotify>NotifyRequestHandler was not added to the Globals.******************************************************************************************My goal by the way is the following:Goal: To add the Node Path to the Specific Interests on the NotificationsInterests page, so instead of just: Specific Item Interests: Item A Item B it will show it like the following: Specific Item Interests: Item A - Enterprise : Folder A : Item A Item B - Enterprise : Folder B : Item BThis is necessary because sometimes you have two items (A &

that mayexist in different folders in Livelink but have the same name, so it'simpossible to distinguish them on the Specific Interests page since it onlydisplays the item name.Just to verify my concept, I did the following:1) Added into the "WEBNOTIFY > NotifyRequestHandler > Interests >FormatSpecificNode: retval.Path = $LLIAPI.LLNodeSubsystem.GetItem( node.pSubtype).NodePath( node ).path `t.Name` - `t.path`
This isn't a module. I just used it to proof out what I was trying toaccomplish. To accomplish, I used the htmlmap functionality ofcustomizationsRT module to substitute the new weblingo page (#2). I justneed to figure out the best way to accomplish part #1 which is overridingthe FormatSpecificNode feature.Thanks in advance for any pointers.Regards,Matt

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Kevin_Ward

Message from Kevin Ward <<A HREF="mailto:kward@opentext.com">kward@opentext.com> via eLink

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Matt, when attempting to override some functionality by equating global variables and the target has no global variable, add it to your own global variables. Open two ospace browser windows and browse in one to the Globals object in your ospace. Then browse in the other to the target object. Now, drag the target object from one window into the right hand pane of the other (the actual list of globals in your ospace). You can name it whatever you want and you'll now have a global variable in your module pointing to the original object in the original ospace. You can then proceed to equate the variables.

Hope this helps.

Kevin

-----Original Message-----
From: eLink Discussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: August 18, 2003 5:35 PM
To: eLink Recipient
Subject: Overriding through Globals

Overriding through Globals Posted by HASBRO011 (Drane, Matthew) on 08/18/2003 05:34 PM

Message from Drane, Matthew <mdrane@hasbro.com> via eLink

Can someone help??

I know that if you need to override some functionality, you can orphan off
the child into your module, override the feature, and then add into the your
Startup script something like:

$GlobalReferencetoOldFeature = $GlobalReferencetoNewFeature

but if there is no reference to the old feature in the Globals, how do you
reference it correctly?

I need to add something into the WEBNOTIFY > NotifyRequestHandler >
Interests > FormatSpecificNode feature script, but
WebNotify>NotifyRequestHandler was not added to the Globals.

****************************************************************************
**************

My goal by the way is the following:

Goal: To add the Node Path to the Specific Interests on the Notifications
Interests page, so instead of just:

Specific Item Interests:
Item A
Item B

it will show it like the following:

Specific Item Interests:
Item A - Enterprise : Folder A : Item A
Item B - Enterprise : Folder B : Item B

This is necessary because sometimes you have two items (A & that may
exist in different folders in Livelink but have the same name, so it's
impossible to distinguish them on the Specific Interests page since it only
displays the item name.

Just to verify my concept, I did the following:

1) Added into the "WEBNOTIFY > NotifyRequestHandler > Interests >
FormatSpecificNode:

retval.Path = $LLIAPI.LLNodeSubsystem.GetItem( node.pSubtype
).NodePath( node ).path

<This gets the path in a colon separated list; (e.g. Enterprise : Folder
A : Item A )

2) Added to the html\ninterests.html weblingo page:

- `t.path` .... so the link will be <A
HREF="`t.URL`">`t.Name`</A> - `t.path`<BR>

<This displays the path variable>

This isn't a module. I just used it to proof out what I was trying to
accomplish. To accomplish, I used the htmlmap functionality of
customizationsRT module to substitute the new weblingo page (#2). I just
need to figure out the best way to accomplish part #1 which is overriding
the FormatSpecificNode feature.

Thanks in advance for any pointers.

Regards,
Matt

Hans_Stoop_(hstoop_(Delete)_1579932)

Message from Hans Stoop <<A HREF="mailto:hstoop@opentext.com">hstoop@opentext.com> via eLink

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">eLink

Hi,

In general overriding the global variables is not a good idea. If somebody else does the same then the solution won't work anymore. Also you really have to check with each upgrade or service pack of Livelink if the original code hasn't changed, because that means that you also have to change your version. A simple test if your code still work is not enough.

What I do is creating a wrapper around an existing function. So when I want to change the function PerformActionOnData I create the following function:

function Assoc PerformActionOnDate(......)

Assoc retVal

// my code to change something in the parameters or do some other action

retVal = myOSpaceNamePerformActionOnDate(......)

// my code to change something in the returning data or do some other action

return retVal

end

The call of myOSpaceNamePerformActionOnDate calls the original function.

But how do I ensure that my new function is called? I do the following for that:

1. I orphan the object that I want to change.

2. I change the type of PerformActionOnDate to String

3. I fill the feature with my script above

4. I add the feature __init to the orphaned object (if it dooesn't exsist)

5. The content of __init becomes:

function void __Init()
Object superObject = OS.Parent(this)
$CustomizationsRT.UtilsRT.ReplaceScript(superObject, 'PerformActionOnDate', 'myOSpaceName', this.PerformActionOnDate)
end
6. run buildospace

How it works:

The __init functions is executed everytime livelink is started.

the function ReplaceScript will put my code in front of the original code and will put 'myOSpaceName' in front of the original function name.

NOTE: The OSpace that you want too change must be locked, otherwise it will be permanently changed.

This method doesn't have the two problems mentioned earlier:

- when 2 persons want to override the same function, then it will work as long as

- you keep the original function name in your own function

- the prefix that is used will be different (which is always the case when you use the name of your own ospace)

- with a Livelink upgrade you will call the new function of Livelink, because the wrapper is created everytime livelink is started. So you use always the uptodate original function.

This method doesn't work when you really need too change the flow of coontrol within the original function. Until now I was always able to manage to create the wrapper. Sometimes I needed to write more code then I would have when I directly changed the function, but think it is wirth the extra work.

Hans

--------
Livelink Appearance: the easiest way to skin Livelink.
Contact hstoop@opentext.com for more information.

-----Original Message-----
From: eLink Discussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: maandag 18 augustus 2003 23:35
To: eLink Recipient
Subject: Overriding through Globals

Overriding through Globals Posted by HASBRO011 (Drane, Matthew) on 08/18/2003 05:34 PM

Message from Drane, Matthew <mdrane@hasbro.com> via eLink

Can someone help??

I know that if you need to override some functionality, you can orphan off
the child into your module, override the feature, and then add into the your
Startup script something like:

$GlobalReferencetoOldFeature = $GlobalReferencetoNewFeature

but if there is no reference to the old feature in the Globals, how do you
reference it correctly?

I need to add something into the WEBNOTIFY > NotifyRequestHandler >
Interests > FormatSpecificNode feature script, but
WebNotify>NotifyRequestHandler was not added to the Globals.

****************************************************************************
**************

My goal by the way is the following:

Goal: To add the Node Path to the Specific Interests on the Notifications
Interests page, so instead of just:

Specific Item Interests:
Item A
Item B

it will show it like the following:

Specific Item Interests:
Item A - Enterprise : Folder A : Item A
Item B - Enterprise : Folder B : Item B

This is necessary because sometimes you have two items (A & that may
exist in different folders in Livelink but have the same name, so it's
impossible to distinguish them on the Specific Interests page since it only
displays the item name.

Just to verify my concept, I did the following:

1) Added into the "WEBNOTIFY > NotifyRequestHandler > Interests >
FormatSpecificNode:

retval.Path = $LLIAPI.LLNodeSubsystem.GetItem( node.pSubtype
).NodePath( node ).path

<This gets the path in a colon separated list; (e.g. Enterprise : Folder
A : Item A )

2) Added to the html\ninterests.html weblingo page:

- `t.path` .... so the link will be <A
HREF="`t.URL`">`t.Name`</A> - `t.path`<BR>

<This displays the path variable>

This isn't a module. I just used it to proof out what I was trying to
accomplish. To accomplish, I used the htmlmap functionality of
customizationsRT module to substitute the new weblingo page (#2). I just
need to figure out the best way to accomplish part #1 which is overriding
the FormatSpecificNode feature.

Thanks in advance for any pointers.

Regards,
Matt