XML introductory tutorial: specific analysis of XLink-XML/XSLT

XLink is an attribute-based syntax used to add links in XML documents. An XLink link can be one-way, like the A element in HTML, or it can be two-way, linking two documents in both directions, so it can go from A to B or from B to A. Each XLink element must have an xlink:type attribute indicating the type of connection. Attribute xlink:h
​                     ​ ​ ​ ​XLink is an attribute-based syntax used to add links in XML documents. An XLink link can be one-way, like the A element in HTML, or it can be two-way, linking two documents in both directions, so it can go from A to B or from B to A. Each XLink element must have an xlink:type attribute indicating the type of connection. The attribute xlink:href points to the linked resource URI.                    
XLink is an attribute-based syntax used to add links in XML documents. An XLink link can be one-way, like the A element in HTML, or it can be two-way, linking two documents in both directions, so it can go from A to B or from B to A. Each XLink element must have an xlink:type attribute indicating the type of connection. The attribute xlink:href points to the linked resource URI. The following is an example of a simple link:

<test xmlns:xlink = "http://www.w3.org/1999/xlink"

      xlink:type = "simple"

      xlink:href = "http://www.ringkee.com/xml.html">

<author>Jims</author>

<date>2005/02/18</date>

</test>

xlink:type attribute type There are six types, namely:

simple，extended，locator，arc，title，resource。

xlink:show attribute can tell the browser or application What the program should do when activating a link, it has five possible actions, which are:

• new, display the link content in a new window.                

• replace, display the link content in the current window.                  

• embed, embed content at the position of the current link element.                

• other, the action is undefined and is specified by the application.                

• none, no action.

• xlink:actuate attribute tells the browser when to display the link. It has four possible values:

• onLoad, once When a link is found, it will be displayed immediately.                 

• onRequest, only displayed when the user makes a request.                    

• other, other tags in the document, not xlink, determine when to display it.                

• none, not specified.

• An example that works the same as the A element in HTML:

• <test xmlns:xlink = "http://www.w3.org/1999/xlink"
  
        xlink:type = "simple"
  
        xlink:href = "http://www.ringkee.com/xml.html"
  
        xlink:actuate = "onRequest" 
  
        xlink:show = "replace" >
  
  <author>Jims</author>
  
  <date>2005/02/18</date>
  
  </test>

• An example of embedding an image on a page :

• xlink:actuate and xlink:show are optional.

• <image xlink:type = "simple"
  
         xlink:actuate = "onLoad"
  
         xlink:show = "embed"
  
         xlink:href="http://www.ringkee.com/flower.png"
  
   width = "320" height = "240" />

• The xlink:title and xlink:role attributes can specify the description between resources. xlink:title contains a small amount of text describing the remote resource, and xlink:role contains URI, pointing to a longer description of the resource.

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