Features and Properties

• SAX2 parsers--that is XMLReaders--are configured by features and properties

• Feature and property names are absolute URIs

• A feature is boolean, on or off, true or false; a property is an object

• public boolean getFeature(String name)
   throws SAXNotRecognizedException, SAXNotSupportedException
  public void setFeature(String name, boolean value)
   throws SAXNotRecognizedException, SAXNotSupportedException
  public Object getProperty(String name)
   throws SAXNotRecognizedException, SAXNotSupportedException
  public void setProperty(String name, Object value)
   throws SAXNotRecognizedException, SAXNotSupportedException
  

• Features can be read-only or read/write.

• Some features may be modifiable while parsing; others only before parsing starts

• For example,

  try {
    if (xmlReader.getFeature("http://xml.org/sax/features/validation")) {
      System.out.println("Parser is validating.");
    } 
    else {
      System.out.println("Parser is not validating.");
    }
  } 
  catch (SAXException e) {
    System.out.println("Do not know if parser validates");
  }