void parseCategory()

in src/main/java/org/apache/log4j/xml/DOMConfigurator.java [391:438]
38 lines of code
7 McCabe index (conditional complexity)

  void parseCategory (Element loggerElement) {
    // Create a new org.apache.log4j.Category object from the <category> element.
    String catName = subst(loggerElement.getAttribute(NAME_ATTR));

    Logger cat;    

    String className = subst(loggerElement.getAttribute(CLASS_ATTR));


    if(EMPTY_STR.equals(className)) {
      LogLog.debug("Retreiving an instance of org.apache.log4j.Logger.");
      cat = (catFactory == null) ? repository.getLogger(catName) : repository.getLogger(catName, catFactory);
    }
    else {
      LogLog.debug("Desired logger sub-class: ["+className+']');
       try {	 
	 Class clazz = Loader.loadClass(className);
	 Method getInstanceMethod = clazz.getMethod("getLogger", 
						    ONE_STRING_PARAM);
	 cat = (Logger) getInstanceMethod.invoke(null, new Object[] {catName});
       } catch (InvocationTargetException oops) {
          if (oops.getTargetException() instanceof InterruptedException
                  || oops.getTargetException() instanceof InterruptedIOException) {
              Thread.currentThread().interrupt();
          }
          LogLog.error("Could not retrieve category ["+catName+
		      "]. Reported error follows.", oops);
	      return;
       } catch (Exception oops) {
	      LogLog.error("Could not retrieve category ["+catName+
		      "]. Reported error follows.", oops);
	      return;
       }
    }

    // Setting up a category needs to be an atomic operation, in order
    // to protect potential log operations while category
    // configuration is in progress.
    synchronized(cat) {
      boolean additivity = OptionConverter.toBoolean(
                           subst(loggerElement.getAttribute(ADDITIVITY_ATTR)),
			   true);
    
      LogLog.debug("Setting ["+cat.getName()+"] additivity to ["+additivity+"].");
      cat.setAdditivity(additivity);
      parseChildrenOfLoggerElement(loggerElement, cat, false);
    }
  }