Virtual Structures

Post #26,890 by tablizer 2/1/02 2:23:51 PM Reply	Virtual Structures >> And "little snippets of data structures" make no sence to me << It is not snippets of data structures themselves, but snippets of specification of the relationships between the base components. IOW, rather than "build the tree" in code like you do in stereotypic OOP, you define a formula for a tree. (Hypothetical only since it is the specific views that are defined, not physical structures, and so the label "tree" is not really appropriate.) In p/r, one is less pressured to "model" up front, because it is assumed that the structures eventually used are virtually created as needed. You just have to make sure that enuf info is available in the "nodes" to be able to apply a structural formula to. ________________ oop.ismad.com
Post #26,892 by Arkadiy 2/1/02 2:27:03 PM Reply	I understand all words , but cannot make out what you're trying to say. May be an example?
Post #26,895 by tablizer 2/1/02 2:59:35 PM Reply	how about this then We could compare a p/r "role pattern" to an OOP one: [link\|http://www.geocities.com/tablizer/prpats.htm#role\|http://www.geocitie...ats.htm#role] (I didn't show the OOP version. Jay posted a Java version once, but I don't remember where it is. Anybody volunteer one?) ________________ oop.ismad.com
Post #26,900 by Arkadiy 2/1/02 3:39:25 PM Reply	Odd. Not a single mention of "coddlet" anywhere.
Post #26,931 by tablizer 2/1/02 10:19:20 PM Reply	"A formula for a pattern or structure" ________________ oop.ismad.com
Post #27,029 by Arkadiy 2/2/02 9:36:22 PM Reply	Still odd. The only use of word "formula" on the whole page is here: >>>>>>>>>>>>>>>>>>>>>>>>>>> You will note that many of my examples don't include a lot of code. This is because many of the GOF-influenced patterns are mere "viewpoints" in the relational world, created by a trivial relational or Boolean formula, and not a physical code structure. This makes them easier and less intrusive to test and change. Thus, to us table fans, GOF-like patterns appear Neanderthalic. It is better abstraction to use formulas to represent repeating patterns than to physically repeat them. For one, the same items can more easily participate in multiple patterns. Think about it. <<<<<<<<<<<<<<<<<<<<<<<<<<< No matter how much I thnk about it, I don't get it. Do you mean using "WHERE" clause of a SELECT (or may be a view) instead of a list or a table holding needed elements? Fine technique, when you can employ it. But not really new or deserving its own term. Or did you mean something deeper?
Post #27,036 by tablizer 2/2/02 11:03:01 PM Reply	Jay, where is your "Roles" link? ________________ oop.ismad.com

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