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+/* *************************************************************************
+
+ IT Mill Toolkit
+
+ Development of Browser User Interfaces Made Easy
+
+ Copyright (C) 2000-2006 IT Mill Ltd
+
+ *************************************************************************
+
+ This product is distributed under commercial license that can be found
+ from the product package on license.pdf. Use of this product might
+ require purchasing a commercial license from IT Mill Ltd. For guidelines
+ on usage, see licensing-guidelines.html
+
+ *************************************************************************
+
+ For more information, contact:
+
+ IT Mill Ltd phone: +358 2 4802 7180
+ Ruukinkatu 2-4 fax: +358 2 4802 7181
+ 20540, Turku email: info@itmill.com
+ Finland company www: www.itmill.com
+
+ Primary source for information and releases: www.itmill.com
+
+ ********************************************************************** */
+
+package com.itmill.toolkit.terminal.gwt.server;
+
+/**
+ * <p>
+ * Class providing centralized logging services. The logger defines five message
+ * types, and provides methods to create messages of those types. These types
+ * are:
+ * </p>
+ *
+ * <ul>
+ * <li> <code>info</code> - Useful information generated during normal
+ * operation of the application.
+ * <li> <code>warning</code> - An error situation has occurred, but the
+ * operation was able to finish succesfully.
+ * <li> <code>error</code> - An error situation which prevented the operation
+ * from finishing succesfully.
+ * <li> <code>debug</code> - Internal information from the application meant
+ * for developers.
+ * <li> <code>exception</code> - A Java exception reported using the logger.
+ * Includes the exception stack trace and a possible free-form message.
+ * </ul>
+ *
+ * <p>
+ * Currently the class offers logging only to the standard output.
+ * </p>
+ *
+ * @author IT Mill Ltd.
+ * @version
+ * @VERSION@
+ * @since 3.0
+ */
+public class Log {
+
+ private static boolean useStdOut = true;
+
+ private static String LOG_MSG_INFO = "[INFO]";
+
+ private static String LOG_MSG_ERROR = "[ERROR]";
+
+ private static String LOG_MSG_WARN = "[WARNING]";
+
+ private static String LOG_MSG_DEBUG = "[DEBUG]";
+
+ private static String LOG_MSG_EXCEPT = "[EXCEPTION]";
+
+ /**
+ * Logs the <code>warning</code> message.
+ *
+ * @param message
+ * the Message String to be logged.
+ */
+ protected static synchronized void warn(java.lang.String message) {
+ if (Log.useStdOut)
+ System.out.println(LOG_MSG_WARN + " " + message);
+ }
+
+ /**
+ * Logs the <code>debug</code> message.
+ *
+ * @param message
+ * the Message String to be logged.
+ */
+ protected static synchronized void debug(java.lang.String message) {
+ if (Log.useStdOut)
+ System.out.println(LOG_MSG_DEBUG + " " + message);
+ }
+
+ /**
+ * Logs an <code>info</code> message.
+ *
+ * @param message
+ * the Message String to be logged.
+ */
+ protected static synchronized void info(java.lang.String message) {
+ if (Log.useStdOut)
+ System.out.println(LOG_MSG_INFO + " " + message);
+ }
+
+ /**
+ * Logs the Java exception and an accompanying error message.
+ *
+ * @param message
+ * the Message String to be logged.
+ * @param e
+ * the Exception to be logged.
+ */
+ protected static synchronized void except(java.lang.String message,
+ Exception e) {
+ if (Log.useStdOut) {
+ System.out.println(LOG_MSG_EXCEPT + " " + message);
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * Logs the <code>error</code> message.
+ *
+ * @param message
+ * the Message String to be logged.
+ */
+ protected static synchronized void error(java.lang.String message) {
+ if (Log.useStdOut)
+ System.out.println(LOG_MSG_ERROR + " " + message);
+ }
+}