How to use

RuleSet

in

org.apache.commons.digester

/**
 * Register a set of Rule instances defined in a RuleSet.
 *
 * @param ruleSet The RuleSet instance to configure from
 */
public void addRuleSet(RuleSet ruleSet) {
  String oldNamespaceURI = getRuleNamespaceURI();
  String newNamespaceURI = ruleSet.getNamespaceURI();
  if (log.isDebugEnabled()) {
    if (newNamespaceURI == null) {
      log.debug("addRuleSet() with no namespace URI");
    } else {
      log.debug("addRuleSet() with namespace URI " + newNamespaceURI);
    }
  }
  setRuleNamespaceURI(newNamespaceURI);
  ruleSet.addRuleInstances(this);
  setRuleNamespaceURI(oldNamespaceURI);
}

/**
 * Add rules to an already created Digester instance, analyzing the digester
 * annotations in the target class.
 *
 * @param target the class has to be analyzed.
 * @param digester the Digester instance reference.
 */
public void addRules(final Class<?> target, final Digester digester) {
  RuleSet ruleSet = getRuleSet(target);
  ruleSet.addRuleInstances(digester);
}

/**
 * <p>Return the <code>Digester</code> instance to be used for
 * parsing, creating one if necessary.</p>
 * @return A Digester instance.
 */
public Digester getDigester() {
  if (digester == null) {
    digester = new Digester();
    RuleSet ruleSet = getRuleSet();
    digester.setNamespaceAware(ruleSet.getNamespaceURI() != null);
    digester.setUseContextClassLoader(getUseContextClassLoader());
    digester.setValidating(false);
    digester.addRuleSet(ruleSet);
  }
  return (digester);
}

/**
 * <p>Return a fully configured <code>Digester</code> instance.</p>
 */
private Digester digester() {
  // Return any previously created instance
  if (digester != null) {
    return digester;
  }
  // Create and configure a new Digester instance
  digester = new Digester();
  digester.setNamespaceAware(false);
  digester.setUseContextClassLoader(true);
  digester.setValidating(isValidating());
  // Register our local copy of DTDs we recognize
  for (int i = 0; i < REGISTRATIONS.length; i += 2) {
    URL url = this.getClass().getResource(REGISTRATIONS[i + 1]);
    digester.register(REGISTRATIONS[i], url.toString());
  }
  // Configure processing rules
  RuleSet ruleSet = null;
  ruleSet = new ManagedBeansRuleSet();
  ruleSet.addRuleInstances(digester);
  // Return the configured instance
  return digester;
}

/**
 * Register a set of Rule instances defined in a RuleSet.
 *
 * @param ruleSet The RuleSet instance to configure from
 */
public void addRuleSet(RuleSet ruleSet) {
  String oldNamespaceURI = getRuleNamespaceURI();
  String newNamespaceURI = ruleSet.getNamespaceURI();
  if (log.isDebugEnabled()) {
    if (newNamespaceURI == null) {
      log.debug("addRuleSet() with no namespace URI");
    } else {
      log.debug("addRuleSet() with namespace URI " + newNamespaceURI);
    }
  }
  setRuleNamespaceURI(newNamespaceURI);
  ruleSet.addRuleInstances(this);
  setRuleNamespaceURI(oldNamespaceURI);
}