--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/tn5250j/tools/logging/TN5250jLogFactory.java	Thu May 22 12:38:09 2014 -0700
@@ -0,0 +1,143 @@
+/*
+ * @(#)TN5250jLogFactory.java
+ * @author  Kenneth J. Pouncey
+ *
+ * Copyright:    Copyright (c) 2001, 2002, 2003
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ */
+package org.tn5250j.tools.logging;
+
+import java.util.*;
+
+import org.tn5250j.tools.logging.TN5250jLogger;
+import org.tn5250j.interfaces.ConfigureFactory;
+
+/**
+ * An interface defining objects that can create Configure
+ * instances.
+ *
+ * The model for the HashMap implementation of loggers came from the POI project
+ * thanks to Nicola Ken Barozzi (nicolaken at apache.org) for the reference.
+ *
+ */
+public final class TN5250jLogFactory {
+
+   // map of TN5250jLogger instances, with classes as keys
+   private static Map<String, TN5250jLogger> _loggers = new HashMap<String, TN5250jLogger>();
+   private static boolean log4j;
+   private static String customLogger;
+   private static int level = TN5250jLogger.INFO;
+
+   /**
+    * Here we try to do a little more work up front.
+    */
+   static {
+
+      try {
+         Properties props =
+            ConfigureFactory.getInstance().getProperties(
+               ConfigureFactory.SESSIONS);
+
+
+         level = Integer.parseInt(props.getProperty("emul.logLevel",
+                           Integer.toString(TN5250jLogger.INFO)));
+
+         String  customLogger = System.getProperty(TN5250jLogFactory.class.getName());
+         if (customLogger == null) {
+            try {
+               Class.forName("org.apache.log4j.Logger");
+               log4j = true;
+            }
+            catch (Exception ignore) { ; }
+         }
+
+      }
+      catch (Exception ignore) { ; }
+
+   }
+
+   /**
+    * Set package access only so we have to use getLogger() to return a logger object.
+    */
+   TN5250jLogFactory() {
+
+   }
+
+   /**
+    * @return An instance of the TN5250jLogger.
+    */
+   public static TN5250jLogger getLogger (Class<?> clazz) {
+      return getLogger(clazz.getName());
+   }
+
+   /**
+    * @return An instance of the TN5250jLogger.
+    */
+   public static TN5250jLogger getLogger (String clazzName) {
+      TN5250jLogger logger = null;
+
+      if (_loggers.containsKey(clazzName)) {
+         logger = _loggers.get(clazzName);
+      } else {
+
+         if (customLogger != null) {
+            try {
+
+               Class<?> classObject = Class.forName(customLogger);
+               Object  object = classObject.newInstance();
+               if (object instanceof TN5250jLogger) {
+                  logger = (TN5250jLogger) object;
+               }
+            }
+            catch (Exception  ex) { ; }
+         } else {
+        	 if (log4j) {
+        		 logger = new Log4jLogger();
+        	 } else {
+        		 // take the default logger.
+        		 logger = new ConsoleLogger();
+        	 }
+        	 logger.initialize(clazzName);
+        	 logger.setLevel(level);
+        	 _loggers.put(clazzName, logger);
+         }
+      }
+
+      return logger;
+   }
+
+   public static boolean isLog4j() {
+   		return log4j;
+   }
+
+   public static void setLogLevels(int newLevel) {
+
+      if (level != newLevel) {
+         level = newLevel;
+         TN5250jLogger logger = null;
+         Set<String> loggerSet = _loggers.keySet();
+         Iterator<String> loggerIterator = loggerSet.iterator();
+         while (loggerIterator.hasNext()) {
+            logger = _loggers.get(loggerIterator.next());
+            logger.setLevel(newLevel);
+         }
+      }
+
+   }
+
+}
\ No newline at end of file