Package net.sourceforge.jtds.util

Class Logger

  • public class Logger
extends java.lang.Object
    Class providing static methods to log diagnostics.

    There are three ways to enable logging:

    1. Pass a valid PrintWriter to DriverManager.setLogWriter().
    2. Pass a valid PrintWriter to DataSource.setLogWriter().
    3. For backwards compatibility call Logger.setActive();
    Author:
    Mike Hutchinson, Holger Rehn

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static char[] hex  
      private static java.io.PrintWriter log
      PrintWriter stream set by DataSource.

    • Constructor Summary

      Constructors 
      Constructor Description
      Logger()  

    • Method Summary

      All Methods Static Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      static java.io.PrintWriter getLogWriter()
      Get the logging PrintWriter Stream.
      static boolean isActive()
      Retrieve the active status of the logger.
      static void logException​(java.lang.Exception e)
      Print an Exception stack trace to the log.
      static void logPacket​(int streamId, boolean in, byte[] pkt)
      Print a dump of the current input or output network packet.
      static void println​(java.lang.String message)
      Print a diagnostic message to the output stream provided by the DataSource or the DriverManager.
      static void setActive​(boolean value)
      Deprecated.
      Use the JDBC standard mechanisms to enable logging.
      static void setLogWriter​(java.io.PrintWriter out)
      Set the logging PrintWriter stream.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • log

        private static java.io.PrintWriter log
        PrintWriter stream set by DataSource.

      • hex

        private static final char[] hex

    • Constructor Detail

      • Logger

        public Logger()

    • Method Detail

      • setLogWriter

        public static void setLogWriter​(java.io.PrintWriter out)
        Set the logging PrintWriter stream.
        Parameters:
        out - the PrintWriter stream

      • getLogWriter

        public static java.io.PrintWriter getLogWriter()
        Get the logging PrintWriter Stream.
        Returns:
        the logging stream as a PrintWriter

      • isActive

        public static boolean isActive()
        Retrieve the active status of the logger.
        Returns:
        boolean true if logging enabled

      • println

        public static void println​(java.lang.String message)

        Print a diagnostic message to the output stream provided by the DataSource or the DriverManager.

        Parameters:
        message - the diagnostic message to print

      • logPacket

        public static void logPacket​(int streamId,
                             boolean in,
                             byte[] pkt)
        Print a dump of the current input or output network packet.
        Parameters:
        streamId - the owner of this packet
        in - true if this is an input packet
        pkt - the packet data

      • logException

        public static void logException​(java.lang.Exception e)
        Print an Exception stack trace to the log.
        Parameters:
        e - the exception to log

      • setActive

        public static void setActive​(boolean value)
        Deprecated.
        Use the JDBC standard mechanisms to enable logging.
        Turn the logging on or off.
        Parameters:
        value - true to turn on logging