/**
* Logback: the reliable, fast and flexible logging library for Java.
*
* Copyright (C) 1999-2006, QOS.ch
*
* This library is free software, you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation.
*/
package chapter3.newRule;
import java.util.HashMap;
import java.util.Map;
import ch.qos.logback.core.Context;
import ch.qos.logback.core.ContextBase;
import ch.qos.logback.core.joran.action.Action;
import ch.qos.logback.core.joran.action.NewRuleAction;
import ch.qos.logback.core.joran.spi.JoranException;
import ch.qos.logback.core.joran.spi.Pattern;
import ch.qos.logback.core.util.StatusPrinter;
import chapter3.SimpleConfigurator;
import chapter3.calculator.ComputationAction2;
/**
* This example illustrates the usage of NewRuleAction which allows the Joran
* interpreter to learn new rules on the fly from the XML file being
* interpreted.
*
* This example relies heavily on the code from the joran.calculator package.
*
* @author Ceki Güulcü
*/
public class NewRuleCalculator {
public static void main(String[] args) throws Exception {
Context context = new ContextBase();
Map<Pattern, Action> ruleMap = new HashMap<Pattern, Action>();
// we start with the rule for the top-most (root) element
ruleMap.put(new Pattern("*/computation"), new ComputationAction2());
// Associate "/new-rule" pattern with NewRuleAction from the
// org.apache.joran.action package.
//
// We will let the XML file to teach the Joran interpreter about new rules
ruleMap.put(
new Pattern("/computation/new-rule"), new NewRuleAction());
SimpleConfigurator simpleConfigurator = new SimpleConfigurator(ruleMap);
// link the configurator with its context
simpleConfigurator.setContext(context);
try {
simpleConfigurator.doConfigure(args[0]);
} catch (JoranException e) {
// Print any errors that might have occured.
StatusPrinter.print(context);
}
}
}