1. Java API for XML Processing
XML parsing model SAX

2. Contents What is JAXP ? Uses for JAXP JAXP API Model & Implementations
Processing XML with SAX

3. What is JAXP ? Java API for XML Parsing JAXP 1.0 (1999) JAXP 1.1
Supported SAX 1.0 and DOM Level 1
JAXP 1.1
Supports SAX 2.0 & extension, DOM Level 2
JAXP 1.3 ( included in J2SE 5.0 )
Supports SAX 2.0.2, DOM Level 3
Include Xerces ver

4. Uses for JAXP Pluggability layer
Change parser without affecting the application logic
Standard interfaces that encapsulate the details behind parser interactions
choose a parser provider that best suits the requirements of the service

5. JAXP API Model & Implementations
Parsing classes
Javax.xml.parsers package
Transformaction classes
Javax.xml.transform package
Many implementation
Sun Crimson(included JDK1.4)
ApacheXerces, IBM, Oracle

6. Processing XML with SAX (1)
Event-driven processing model
Data elements are interpreted and callback
Biggest advantage
Not load XML documents ( fast, lightweight )

7. Processing XML with SAX Case 1 - SAXFactory
Steps
1. Getting Factory and Parser class
2. Setting options
Setting namespace, validation, features
3. Implement DefaultHandler class
4. Using parser Method

8. Processing XML with SAX - Case 1 - Getting Factory and Parser class
try {
SAXParserFactory saxFactory =
SAXParserFactory.newInstance();
SAXParser saxParser =
saxFactory.newSAXParser();
} catch ( FactoryConfigurationError fce ) {
// handle exception here
} catch ( ParserConfigurationError pce ) { }

9. Processing XML with SAX - Case 1 - Setting options
Setting Namespace
factory.setNameSpaceAware(boolean)
boolean parser.isNamespaceAware()
Setting Validation
factory.setValidation(boolean)
boolean parser.isValidating()
Setting Features
factory.setFeature(strName, boolean)
boolean factory.getFeature(strName)

10. Processing XML with SAX - Case 1 - Setting options
Setting Namespace
factory.setNameSpaceAware(boolean)
boolean parser.isNamespaceAware()
Setting Validation
factory.setValidation(boolean)
boolean parser.isValidating()
Setting Features
factory.setFeature(strName, boolean)
boolean factory.getFeature(strName)

11. Processing XML with SAX - Case 1 SAXFactory - DefaultHandler
Implement ( Adapter Class )
ContentHandler
ErrorHandler
DTDHandler
EntityResolver

12. Processing XML with SAX - Case 1 - DefaultHandler class
public class MySAXHandler extends DefaultHandler {
public MySAXHandler() { }
// overiding method - contentHandler
public void startDocument() throws SAXException { }
public void endDocument() throws SAXException { }
public void characters(char[] buf, int offset, int len) throws SAXException { }
public void startElement(String namespaceURI, String localName, String rowName, Attributes attrs ) throws SAXException { }
public void endElement(String namespaceURI, String localName, String rowName) throws SAXException { } }

13. Processing XML with SAX - Case 1 - DefaultHandler class 2
Parameter
String namespaceURI
String localname
nick
String qName
a:nick
Attributes attrs
Info=“조찬제”
<?xml version=“1.0”?>
<GGAMAN xmlns:g="
<info name=“조찬제”>
<g:nick>Chan</g:nick>
</info>
</GGAMAN>

14. Processing XML with SAX - Case 1 - Using SAX Parser
sp.parse("simplerss.xml",myHandler);

15. Processing XML with SAX Case 2 - XMLReader
Steps
1. Getting XMLReader Class
2. Set ContentHandler ( and other )
3. Using parser Method

16. Processing XML with SAX Case 2 - XMLReader
XMLReader xmlReader =
XMLReaderFactory.createXMLReader();
xmlReader.setContentHandler(myHandler);
// xmlReader.setDTDHandler(someHandler);
xmlReader.parse("simplerss.xml");

17. Example