1. XML processing in ColdFusion MX Everything you wanted to know about XML, but were afraid to ask October 2006 Jaxfusion User Group

2. About the Presenter »David Fekke »Working with XML 1999 »Lead for Vurv HR-XML API

3. Covered in this presentation »Properly formed XML »ColdFusion XML Tags and functions »XPath queries »XML XSDs and Validation »XML Namespaces »DOM vs. Streaming parsers »StAX API

4. XML »eXtensible Markup Language »Originated from SGML »W3C standard »More versatile then Flat files

5. XML Syntax »XML declaration » »Must have one root tag » »All tags must have closing tag. » : single tags can have forward slash at the end » tags can have attributes

6. Pre MX XML features »WDDX »SOXML custom tag, windows only

7. ColdFusion MX 6 »CFXML tag turns serialized XML into a ColdFusion object »XMLParse() function »ColdFusion XML Object works like series of structures and arrays »XMLSearch() function »XMLSearch Uses XPath queries to return array of XML nodes

8. XML Check functions »IsXMLIsXML »IsXmlDocIsXmlDoc »IsWDDXIsWDDX »IsXmlAttributeIsXmlAttribute »IsXmlElemIsXmlElem »IsXmlNodeIsXmlNode »IsXmlRootIsXmlRoot

9. XML editing functions »XmlNew() »XmlChildPos()XmlChildPos »XmlNew()XmlNew »XmlTransform()XmlTransform »XmlElemNew()XmlElemNew

10. ColdFusion MX 7 Functions »XmlGetNodeType()XmlGetNodeType »XmlValidate()XmlValidate

11. XPath queries »Provides a way to pull the elements you need without having to iterate through the entire DOM »/rootelement/parent/childelement »//childelement//childelement »/rootelement/parent[childelement = “foo”] »Used with XSLT templates

12. XML Validation »Define XML with DTD or XSD »XSD preferred method for validation »XSD uses an XML format »Allows for strict and custom datatypes »Allows for pattern recognition

14. Dwight Mercer 32 Miguel Cabrera 33

15. Default XSD element types »xs:String »xs:normalizedString »xs:integer »xs:base64Binary »xs:negativeInteger »xs:positiveInteger »xs:Hexbinary »xs:Long »xs:short

16. Custom Types

17. XML Namespaces »Namespaces allow for XML to be segmented into different parts » namespace will prefix the element name »<fekke:root xmlns:fekke=“http://www.fekke... »No namespace xmlns=“” »Use explicit XPath with no namespace »Nonamespace xpath=“/:element”

18. DOM, SAX and Pull Parsers »ColdFusion uses a DOM parser. Entire XML object in memory. »SAX parser reads in file portion of the time. Raises events when elements match. »StAX uses pull based parser to read one node at time. Uses streams to read in portion

19. StAX »BEA JSR 173 »Many implementations »Includes Event and Pull parsers »Jim Collins working on CFStAX library »Woodstox library extremely fast implementation

20. StAX objects »XMLInputFactory »XMLStreamConstants »XMLStreamReader »XMLEventReader

21. XMLStreamConstants »Constants for different node types »XMLStreamConstants.START_ELEMENT »XMLStreamConstants.END_ELEMENT »XMLStreamConstants.START_DOCUMENT »XMLStreamConstants.END_DOCUMENT

22. XmlStreamReader methods »Next() iterates through XML stream »getLocalName() returns tag name »getAttributeCount() returns tags attribute count »getAttributeLocalName() returns attribute name »getAttributeValue() returns attribute value »hasText() returns boolean if element has text »getText() returns element text

23. Free XML Tools »IE and Firefox have built in DOM parsers »XMLFox for testing validation »XMLButterfly for editing and formatting XML »Don’t use ALtova XML Spy, its crap!

24. Summary »Use XMLSearch instead of iterating through DOM »Don’t use cfsavecontent to build XML, use CFXML »If using no namespace, use explicit xpaths »Use xmlFormat or CDATA to handle special characters »Use XSDs over DTDs

25. Links »http://www.w3.org/XML/http://www.w3.org/XML/ »http://www.w3.org/XML/Schemahttp://www.w3.org/XML/Schema »http://www.xml.com/http://www.xml.com/ »http://coldfusion.sys- con.com/read/236002.htmhttp://coldfusion.sys- con.com/read/236002.htm

26. Books »ColdFusion Application Development »Beginning XML (Programmer to Programmer) »O’reilly XML in a Nutshell