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 (2)
Steps
1. Getting Factory and Parser class
2. Setting options
Setting namespace, validation, features
3. Implement DefaultHandler class
4. Using SAX Parser

8. Processing XML with SAX - 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 - 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 - Implement DefaultHandler class
public class MySAXHandler extends DefaultHandler {
public MySAXHandler() { }
// overiding method
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 { }

11. Processing XML with SAX - Using SAX Parser

12. Sample SAX Parsing