: 4566 | 108310 | 12308

Add class methods and attributes to LotusScript 
Use this IdeaSpace to post ideas about Domino Designer.

: 22
: 22
: 0
: Domino Designer
: LotusScript, OOP
: Thomas Bahn3669 03 Nov 2007
:
: / Email
In other OO programming languages, there are class methods and attributes. These members are shared by all objects of the class.
 
In Java, these members are flagged by the "static" modifier before the identifier.
 
Class methods can be called on the class itself without the need for an object.
 
They are essential for some class "self-management" capabilities, like counting the instances of a class or having a list of all created objects.
 
Class members are necessary for the common Singleton design pattern and useful for object pools (like database connections).



1) Kenneth Axi1694 (04 Aug 2011)
Hmmm... I don't quite understand this request...

"Method" is called Sub or Function in LS
"Attributes" are called Property in LS

To be able to call a Method/Function without a class/object - place it in the scriptlibrary outside the function and all classes can call it without any object.

Or what am I missing here?
2) Thomas Bahn3669 (05 Aug 2011)
You miss the difference between class and instance members. ;-)

In LotusScript you only have instance members (Sub, Function, Property, Dim), but no class members.

If you want, e.g. count the objects created using a certain class, you need to have a common variable = attribute for all objects, not one for each object.

This could be the code, if LotusScript had class members:

Class Car
Static Dim carsTotal As Integer ' class attribute, static is the modifier used in Java

Public Sub New()
carsTotal = carsTotal + 1
End Sub

Static Function GetCarsTotal As Integer ' class method
GetCarsTotal = carsTotal
End Function
End Class

Class members could be used for central logging of object creation and destruction, object pools, central caching etc.

Have a look at common design patterns, especially Creator/Builder patterns for more use cases of class members.
3) Kenneth Axi1694 (05 Aug 2011)
Ah - now I understand...! Always good to show with example code.
Ok - You got my vote!










:
:

Welcome to IdeaJam™


You can run IdeaJam™ in your company. It's easy to install, setup and customize. Your employees, partners and customers will immediately see results.

Use IdeaJam to:

  • Collect ideas from employees
  • Solicit feedback and suggestions from employees and customers
  • Run innovation contests and competitions
  • Validate concepts
  • Use the power of "crowd-sourcing" to rank ideas and allow the best ideas to rise to the top

IdeaJam™ works with:

  • IBM Connections
  • IBM Lotus Quickr
  • Blogs and Wikis
  • Websphere Portal
  • Microsoft Sharepoint
  • and other applications.

IdeaJam has an extensive set of widgets and API's that allow you to extend and integrate IdeaJam™ with other applications.

Learn more about IdeaJam >>


2
Design element support in XPages format
1
Abort searching design of form
5
Make the columns of the design element lists customizable
42
Allow sorting results of view.FTSearch by view order
4
Y'know that right-click lookup user on emails? That would be really useful in the dialog it opens.
2
Make location of Slide-in notifications adjustable and sticky
307
Make the Notes client check the attachment size BEFORE sending the email
11
Desktop Policy Settings Doc needs settings for full text index on local mail replicas
31
IBM Should Change the Slide Templates
26
Remove the need of recycle()
5
Make a Better "Manage Views"
8
Enable moving Notes workspace page
7
Improve the XPages extension library
135
In case of client crash - zap the need to use zappers!
5
Allow HideWhen on multiply selected outline entries
20
Create Computed Text with the same text style as the current paragraph
2
XPages template/framework based on (incorporating) IBM Design Language
10
make profile a first class design element again
34
NSD Kill for specific task or PID






IdeaJam developed by

Elguji Software Logo