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Download 6-404 Create Document/View Web Applications with XML
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Create Document/View Web Applications With XML Dino Esposito Wrox Press 6-404 Agenda Documents and views XML and ASP HTML and XMLDOM XML and MFC Doc/View Background Model-View-Controller architecture Foundation of SmallTalk 25 yrs ago MFC Doc/View model simplification Separation between data and presentation XML And XSL Two distinct files: Data and presentation XSL applies transformations to XML data XSL knows about the XML code structure Doc-View On The Web Win32 - MFC IE 5.0 XSL CView CView CDocument CView XSL XML Data HTML Page XSL Three Scenarios For XML/XSL Different stylesheets via ASP Different stylesheets via XMLDOM and Dynamic HTML Different stylesheets via MFC classes Agenda Documents and views XML and ASP HTML and XMLDOM XML and MFC XSL Selection Via ASP Frame-based page Surrounding graphics and controls An <IFRAME> window gets the XML text through an ASP page Ex. 1: Web Doc-View Stylesheets <IFRAME src=content.asp?XSL=…> Using ASP: Trade-Offs Easy to design and code Everything happens on the server Serious overhead XML data is continuously downloaded Each representation requires a new page with the same data Agenda Documents and views XML and ASP HTML and XMLDOM XML and MFC Using Data-Islands The HTML page embeds the XML code to display The <xml> tag in IE5.0+ Retrieve the data-island text through the Dynamic HTML DOM Apply the necessary transformation on the client What’s A Data-Island? The <xml> tag supports the src attribute <xml> is IE50specific Use DHTML <html> <body> <xml id=MyData> <% ‘ Enter ASP code to ‘ produce XML data %> </xml> <!-- Rest of the page --> </body> </html> Ex. 2: Using XMLDOM Stylesheets <DIV> filled at runtime via XMLDOM transformations Using XMLDOM Request for Page.asp Web Server Browser (IE 5.0) HTML page with embedded XML code Instantiate XMLDOM, convert to HTML and use Dynamic HTML to display the final code Using XMLDOM: Trade-Offs Browser-dependent Everything takes place on the client XML data downloads only once Only additional XSLs download DHTML script code on the client Agenda Documents and views XML and ASP HTML and XMLDOM XML and MFC Using MFC And CHtmlView A MFC application using CHtmlView Internet Explorer 5.0+ gives you automatic support for XML and XSL Force WebBrowser to display XML Use temp files Everything takes place locally Ex. 3: Using CHtmlView Load OLE DB data and convert to XML Stylesheets WebBrowser displays a temporary XML file Using MFC: Trade-Offs A familiar programming model WebBrowser (IE 5.0) dependent Everything takes place on the client Take advantage of XML support in SQL Server™ 2000
