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How do XML technologies relate to AJAX?

 
Greenhorn
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Questions for the book's author:

I have been using ajax and XML in a Java environment by "brute force" for quite a time (Haven't been using this daily, but problems appears here and there to be solved). But what really bugs me is that the role of every tecnology involved is not always clear to me.

So, the question is, in the "grand view" of things, how each tecnology relates to AJAX, XML and Java and what is their paper and their future. What should we study and how the book relates to each of these tecnologies:

SOAP
XSLT
XPath
Xalan
Jakarta XTags
JSLT XML tags <-- actually, I was never successful in using this thing to parse XML.
[Editted to provide meaningful subject]
[ July 13, 2006: Message edited by: David O'Meara ]
 
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Hi Fabio

Ajax is considered to be a combination of the following:

XML - data storage mechanism (although this can also be plain text)
XMLHttpRequest object - allows asynchronous data retrieval from the server
JavaScript - scripts the XHR object and allows for DOM manipulation and application of XSLT stylesheets
XSLT - transforms XML content into XHTML or other XML sources, adds filtering and sorting
XHTML - generates the application interface
CSS - provides styling for XHTML content

The other tehnologies that you mention do the following:

SOAP (Simple Object Access Protocol) - one XML vocabulary involved in web services
XPath - used in XSLT to target different parts of an XML document, an understanding is essential to use XSLT
Xalan - an XSLT processor. I've never used it.
Jakarta XTags - a library for working with XML. I've never used it.
JSLT XML tags - I'm not familiar with this as I'm not a Java developer.

I think you need to know about XML, XPath and XSLT. If you work with web services, you'll also need a broad understanding of SOAP. I'm not sure about how necessary the other areas are for Java development. Maybe someone else could comment.

Cheers

Sas Jacobs
 
Don't get me started about those stupid light bulbs.
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