package jalview.javascript.log4j;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamException;
import java.io.Serializable;
/**
* Defines the minimum set of levels recognized by the system, that is
* OFF
, FATAL
, ERROR
, WARN
,
* INFO
, DEBUG
and ALL
.
*
*
* The Level
class may be subclassed to define a larger level set.
*
OFF
has the highest possible rank and is intended to turn
* off logging.
*/
final static public Level OFF = new Level(OFF_INT, OFF_NAME, 0);
/**
* The FATAL
level designates very severe error events that will
* presumably lead the application to abort.
*/
final static public Level FATAL = new Level(FATAL_INT, FATAL_NAME, 0);
/**
* The ERROR
level designates error events that might still allow
* the application to continue running.
*/
final static public Level ERROR = new Level(ERROR_INT, ERROR_NAME, 3);
/**
* The WARN
level designates potentially harmful situations.
*/
final static public Level WARN = new Level(WARN_INT, WARN_NAME, 4);
/**
* The INFO
level designates informational messages that
* highlight the progress of the application at coarse-grained level.
*/
final static public Level INFO = new Level(INFO_INT, INFO_NAME, 6);
/**
* The DEBUG
Level designates fine-grained informational events
* that are most useful to debug an application.
*/
final static public Level DEBUG = new Level(DEBUG_INT, DEBUG_NAME, 7);
/**
* The TRACE
Level designates finer-grained informational events
* than the DEBUG
ALL has the lowest possible rank and is intended to turn
* on all logging.
*/
final static public Level ALL = new Level(ALL_INT, ALL_NAME, 7);
/**
* Serialization version id.
*/
static final long serialVersionUID = 3491141966387921974L;
/**
* Instantiate a Level object.
*/
protected Level(int level, String levelStr, int syslogEquivalent)
{
super(level, levelStr, syslogEquivalent);
}
/**
* Convert the string passed as argument to a level. If the conversion fails,
* then this method returns {@link #DEBUG}.
*/
public static Level toLevel(String sArg)
{
return toLevel(sArg, Level.DEBUG);
}
/**
* Convert an integer passed as argument to a level. If the conversion fails,
* then this method returns {@link #DEBUG}.
*/
public static Level toLevel(int val)
{
return toLevel(val, Level.DEBUG);
}
/**
* Convert an integer passed as argument to a level. If the conversion fails,
* then this method returns the specified default.
*/
public static Level toLevel(int val, Level defaultLevel)
{
switch (val)
{
case ALL_INT:
return ALL;
case DEBUG_INT:
return Level.DEBUG;
case INFO_INT:
return Level.INFO;
case WARN_INT:
return Level.WARN;
case ERROR_INT:
return Level.ERROR;
case FATAL_INT:
return Level.FATAL;
case OFF_INT:
return OFF;
case TRACE_INT:
return Level.TRACE;
default:
return defaultLevel;
}
}
/**
* Convert the string passed as argument to a level. If the conversion fails,
* then this method returns the value of defaultLevel
.
*/
public static Level toLevel(String sArg, Level defaultLevel)
{
if (sArg == null)
{
return defaultLevel;
}
String s = sArg.toUpperCase();
if (s.equals(ALL_NAME))
{
return Level.ALL;
}
if (s.equals(DEBUG_NAME))
{
return Level.DEBUG;
}
if (s.equals(INFO_NAME))
{
return Level.INFO;
}
if (s.equals(WARN_NAME))
{
return Level.WARN;
}
if (s.equals(ERROR_NAME))
{
return Level.ERROR;
}
if (s.equals(FATAL_NAME))
{
return Level.FATAL;
}
if (s.equals(OFF_NAME))
{
return Level.OFF;
}
if (s.equals(TRACE_NAME))
{
return Level.TRACE;
}
//
// For Turkish i problem, see bug 40937
//
if (s.equals("\u0130NFO"))
{
return Level.INFO;
}
return defaultLevel;
}
/**
* Custom deserialization of Level.
*
* @param s
* serialization stream.
* @throws IOException
* if IO exception.
* @throws ClassNotFoundException
* if class not found.
*/
private void readObject(final ObjectInputStream s)
throws IOException, ClassNotFoundException
{
s.defaultReadObject();
level = s.readInt();
syslogEquivalent = s.readInt();
levelStr = s.readUTF();
if (levelStr == null)
{
levelStr = "";
}
}
/**
* Serialize level.
*
* @param s
* serialization stream.
* @throws IOException
* if exception during serialization.
*/
private void writeObject(final ObjectOutputStream s) throws IOException
{
s.defaultWriteObject();
s.writeInt(level);
s.writeInt(syslogEquivalent);
s.writeUTF(levelStr);
}
/**
* Resolved deserialized level to one of the stock instances. May be overriden
* in classes derived from Level.
*
* @return resolved object.
* @throws ObjectStreamException
* if exception during resolution.
*/
private Object readResolve() throws ObjectStreamException
{
//
// if the deserizalized object is exactly an instance of Level
//
if (getClass() == Level.class)
{
return toLevel(level);
}
//
// extension of Level can't substitute stock item
//
return this;
}
}