Differnece between Cardinality and Singleton for a Context Node

Dear SDN Community,
Can you please tell me what is the difference between the Cardinality and Singleton properties for a context node.
Thanks!
Surya

Hi Surya
Lead selection
Leadselection is the property which is used to get the index of the selected row of the table
"OnLeadSelect" is the method used to fire an action when a row is selected
The Method wdContext.<node>().getLeadSelection() can be used to
find out the index of the selected element.
Cardinality
Any node or attribute that has the context root node as its immediate parent, is known as an independent node or attribute.
Any node or attribute that has some other node as its immediate parent, is known as a dependent node or attribute.
All context nodes are collections.
A node collection is composed of elements, where an element is an aggregation of the nodes immediate children (attributes and/or other nodes).
The cardinality property controls the number of elements a node collection may hold at runtime.
Every context node has a property called Cardinality. This property is composed of two values that
taken together, describe the maximum and minimum number of elements the node collection may hold
at runtime.
Cardinality Minimum: 0 or 1
Cardinality Maximum: 1 or n
Therefore, there are four possible cardinality values (specified as <Min>..<Max>)
0..1 Zero or one elements permitted
0..n Zero or more elements permitted
1..1 One and only one element permitted
1..n One or more elements permitted
Singleton
All independent nodes are forced to be singletons. This is because the context root node has one and only one element.
Singleton is boolean
TRUE : One instance will be created for all te nodes
FALSE : Every Element in the parent node collection,there will be a distinct instance of the child node.
Why Singleton
-Efficiency
-Less Memory
-Lazy Data Access(Creates instance only when needed,till then it will remain unprocessed)
Supply functions
Supply functions are the mechanism to repopulate child nodes when the lead selection in the parent node
changes. When a singleton child node is declared, you must also write an accompanying supply function.
The Web Dynpro Framework will then automatically call your supply function when the lead selection
in the parent node changes.
Regards
Chaitanya.A

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That weird work-around is indecipherable to me (column less than a character width??) -- would you care to explain it in the context of this thread?
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You know, I have personally read 100+ books with 4 parallel texts like I am describing, and I am sure there are thousands of ones I haven't read with a similar layout. It takes scarcely 2 seconds to realize, looking at the 2 page spread, that even page columns MUST wrap to even page columns, and odd to odd. It's not an "unusual, special" request, it is a NECESSARY REQUIREMENT of 4 parallel columns spread across facing pages. Surely you can see that? But it seems that Adobe developers either never read any scholarly texts, or they just don't understand parallel texts -- period.
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I think you're trying to imagine how these techniques will work, rather than trying them out hands-on. I've done that myself; it's a good learning style for some things, but in this particular case, you need the empirical experience of seeing how the software's built-in mechanisms behave. Until and unless you do it and gain the experience, you can't imagine, project, empathize, conjure, or visualize how these things work. You do have a clear vision of what you want for the end result, however.
In FrameMaker, as in InDesign, as in PageMaker, as in QuarkXpress, you draw text frames on document pages, or on master pages, using a text frame tool. It's named differently in each application.
The tools are for users to apply their vision and creativity, so if you need a certain kind of layout, you need to lay it out yourself. If your particular layout were common, there would very likely be at least one template for available in each professional publishing tool's community.
Why should I even consider FM 9 ?? Adobe wants $1000 bucks for it -- they brag on its "improved features for book production". What a laugh! They can't even conceive of scholarly comparative books across a HUGE gamut of subject areas -- so why should I consider it ?? I'd love for someone to tell me: "YES !! I am proud to announce that FrameMaker can do this natively out of the box !! " But I don't see it coming, do you?
Professional tools cost huge money to develop. If you use them professionally, your work should bring in the revenue to pay for the tools.
As has been said by many posters on many threads in regards to most software, especially the professional tools, it's very unlikely that you'll find a legitimate copy of a past version for sale. The older the version, the less likely there will be a legit copy on some dealer's shelf that pops up, and is put on eBay for a song. It's illegal to sell old versions that one uses to upgrade to a new version. You'll not be able to register the license; in recent versions of Adobe products, you won't be able to use the software at all after the trial period expires, without a valid license.
Using a license cracking tool is also illegal.
It sounds as if your hardware and Windows version limitations are constraining your software choices. It's a tough set of choices.
Oh, BTW, here's a link to a PDF of a FrameMaker example of what I think you're talking about:
http://dl.dropbox.com/u/363247/fm%207X7%204-parallel%20flows%20across%20same-side%20pages. recover.pdf
EDIT:
In the PDF, the small fragments of text are the "pass-through" threaded frames that Arnis described. They're larger than a single character, so you can see the text flow through; in real use, they should be teensy.
/EDIT
It's trickier in InDesign because it's built-in ability to create new pages as stories grow is trick to accomplish the same behavior. The In-Tools plugin that was mentioned can do this.
If you're persnickety about typographic control, InDesign is the better tool. FrameMaker isn't a slouch, it's just that InDesign's been bred for the task.
Regarding lining up the text across columns, InDesign and FrameMaker both can control baseline alignment. You'll need to try out both tools to decide which works the way you need.
HTH
Regards,
Peter
Peter Gold
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