Is there any like framework that will let you do that?
Is there an example for how to read xml?
Is there a tutorial?
Yes, yes, and yes.
Mr. Gecko,
In answer to your queries ... one word. XQuery.
NSXMLNode's objectsForXQuery:error: and
objectsForXQuery:constants:error: do exactly what you want and they
work -exactly- was you describe -- they search an NSXMLNode (which
can be your NSDocument root) and return an NSArray of values matching
your search criteria. The methods are even smart enough to translate
the data into Cocoa forms (NSStrings, NSDates, etc.). This page:
http://developer.apple.com/documentation/Cocoa/Conceptual/
NSXML_Concepts/NSXML.html
shows exactly how to do what you want to do. In particular, you'll
want to read this:
http://developer.apple.com/documentation/Cocoa/Conceptual/
NSXML_Concepts/Articles/QueryingXML.html#//apple_ref/doc/uid/TP40001258
Your next task is to learn XQuery. If you are going to deal with
searching XML data for values, this is a MUST, but you will be amply
rewarded for all your efforts. As someone pointed out learning
XQuery (and XPath) requires some effort. O'Reilly has a really
terrific book on XQuery if you need to learn the basics (it also
covers what you need to know about XPath to use XQuery).
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