package examples;


import org.apache.log4j.Category;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.NDC;

/**
   View the source code of this a
   trivial usage example. Running java examples.Trivial
   should output something similar to:

   
      0    INFO  [main] examples.Trivial (Client #45890) - Awake awake. Put on thy strength.
      15   DEBUG [main] examples.Trivial (Client #45890 DB) - Now king David was old.
      278  INFO  [main] examples.Trivial$InnerTrivial (Client #45890) - Entered foo.
      293  INFO  [main] examples.Trivial (Client #45890) - Exiting Trivial.   
   
   
   
 The increasing numbers at the beginning of each line are the
   times elapsed since the start of the program. The string between
   the parentheses is the nested diagnostic context.

   
See {@link Sort} and {@link SortAlgo} for sligtly more elaborate
   examples.

   
Note thent class files for the example code is not included in
   any of the distributed log4j jar files. You will have to add the
   directory /dir-where-you-unpacked-log4j/classes to
   your classpath before trying out the examples.

 */
public class Trivial {

  static Category cat = Category.getInstance(Trivial.class.getName());

  public static void main(String[] args) {
    BasicConfigurator.configure();
    NDC.push("Client #45890"); 

    cat.info("Awake awake. Put on thy strength.");
    Trivial.foo();
    InnerTrivial.foo();
    cat.info("Exiting Trivial.");    
  }

  static
  void foo() {
    NDC.push("DB"); 
    cat.debug("Now king David was old.");    
    NDC.pop(); 
  }

  static class InnerTrivial {
    static  Category cat = Category.getInstance(InnerTrivial.class.getName());

    static    
    void foo() {
      cat.info("Entered foo."); 
    }
  }
}