code: void applyActiveTrace()
                      throws java.io.IOException {
          String[] names = activeNames.split(":");
  
          // Loop over existing Components.
          for (java.util.Iterator traceIterator = activeTrace.values().iterator(); traceIterator.hasNext();) {
              AbstractTrace abstractTrace = (AbstractTrace) traceIterator.next();
  
              int traceLevelToSet = Trace.Level_None;
              // Loop over active Components, testing to see if any of them is a match.
              for (int i = 0; i < names.length; i++) {
                  String name = names[i];
                  if (name.equals("*"))
                      name = ".*";
                  if (java.util.regex.Pattern.matches(name, abstractTrace.getSourceClass().getName()))
                      traceLevelToSet = traceLevel;
              } // for names...
              abstractTrace.setLevel(traceLevelToSet);
          } // for ... activeTrace Map.
  
      }
docs: /*
  (non-Javadoc)
  
  @see com.ibm.ws.objectManager.utils.AbstractTraceFactory#applyActiveTrace()