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package com.sun.jdo.spi.persistence.utility.logging;
import java.util.ResourceBundle;
import java.security.SecurityPermission;
/** This interface provides an isolation layer between the JDO components
* that need logging services and the implementation of those services.
* <P>
* The JDO Logger interface contains a small number of convenience methods
* in addition to a subset of the
* methods in the java.util.logging.Logger class, and can therefore
* be implemented in a very straightforward way by a subclass of the
* java.util.logging.Logger class.
* There is one instance of the implementing class for each subsystem
* in JDO.
* <P>
* This interface has no JDK 1.4 dependencies.
*/
public interface Logger {
/** Levels are defined as ints to avoid including the java.util.logging.Level
* class in this package.
*/
/**
* OFF is a special level that can be used to turn off logging.
*/
public static final int OFF = Integer.MAX_VALUE;
/**
* SEVERE is a message level indicating a serious failure.
* <p>
* In general SEVERE messages should describe events that are
* of considerable importance and which will prevent normal
* program execution. They should be reasonably intelligible
* to end users and to system administrators.
*/
public static final int SEVERE = 1000;
/**
* WARNING is a message level indicating a potential problem.
* <p>
* In general WARNING messages should describe events that will
* be of interest to end users or system managers, or which
* indicate potential problems.
*/
public static final int WARNING = 900;
/**
* INFO is a message level for informational messages.
* <p>
* Typically INFO messages will be written to the console
* or its equivalent. So the INFO level should only be
* used for reasonably significant messages that will
* make sense to end users and system admins.
*/
public static final int INFO = 800;
/**
* CONFIG is a message level for static configuration messages.
* <p>
* CONFIG messages are intended to provide a variety of static
* configuration information, to assist in debugging problems
* that may be associated with particular configurations.
* For example, CONFIG message might include the CPU type,
* the graphics depth, the GUI look-and-feel, etc.
*/
public static final int CONFIG = 700;
/**
* FINE is a message level providing tracing information.
* <p>
* All of FINE, FINER, and FINEST are intended for relatively
* detailed tracing. The exact meaning of the three levels will
* vary between subsystems, but in general, FINEST should be used
* for the most voluminous detailed output, FINER for somewhat
* less detailed output, and FINE for the lowest volume (and
* most important) messages.
* <p>
* In general the FINE level should be used for information
* that will be broadly interesting to developers who do not have
* a specialized interest in the specific subsystem.
* <p>
* FINE messages might include things like minor (recoverable)
* failures. Issues indicating potential performance problems
* are also worth logging as FINE.
*/
public static final int FINE = 500;
/**
* FINER indicates a fairly detailed tracing message.
* By default logging calls for entering, returning, or throwing
* an exception are traced at this level.
*/
public static final int FINER = 400;
/**
* FINEST indicates a highly detailed tracing message
*/
public static final int FINEST = 300;
/**
* ALL indicates that all messages should be logged.
*/
public static final int ALL = Integer.MIN_VALUE;
/** Test if this logger is logging messages. This is a test for
* log level FINE, FINER, or FINEST. If the log message is expensive to construct,
* this method should be used to determine whether it is a waste of time.
* We don't expose isLoggable(Level) because Level is not available in
* JDK 1.3. Once this is not an issue, we can add isLoggable(Level).
* @return if FINE, FINER, or FINEST is currently being logged
*/
public boolean isLoggable();
/** Test if this logger is logging messages at the specific level.
* If the log message is expensive to construct,
* this method should be used to determine whether it is a waste of time.
* We don't expose isLoggable(Level) because Level is not available in
* JDK 1.3. Once this is not an issue, we can add isLoggable(Level).
* @return if this level is currently being logged
* @param level The level to be tested */
public boolean isLoggable(int level);
//======================================================================
// Start of convenience methods for logging.
//======================================================================
/**
* Log a method entry.
* <p>
* This is a convenience method that can be used to log entry
* to a method. A LogRecord with message "ENTRY", log level
* FINER, and the given sourceMethod and sourceClass is logged.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of method that is being entered
*/
public void entering(String sourceClass, String sourceMethod);
/**
* Log a method entry, with one parameter.
* <p>
* This is a convenience method that can be used to log entry
* to a method. A LogRecord with message "ENTRY {0}", log level
* FINER, and the given sourceMethod, sourceClass, and parameter
* is logged.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of method that is being entered
* @param param1 parameter to the method being entered
*/
public void entering(String sourceClass, String sourceMethod, Object param1);
/**
* Log a method entry, with an array of parameters.
* <p>
* This is a convenience method that can be used to log entry
* to a method. A LogRecord with message "ENTRY" (followed by a
* format {N} indicator for each entry in the parameter array),
* log level FINER, and the given sourceMethod, sourceClass, and
* parameters is logged.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of method that is being entered
* @param params array of parameters to the method being entered
*/
public void entering(String sourceClass, String sourceMethod, Object params[]);
/**
* Log a method return.
* <p>
* This is a convenience method that can be used to log returning
* from a method. A LogRecord with message "RETURN", log level
* FINER, and the given sourceMethod and sourceClass is logged.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of the method
*/
public void exiting(String sourceClass, String sourceMethod);
/**
* Log a method return, with result object.
* <p>
* This is a convenience method that can be used to log returning
* from a method. A LogRecord with message "RETURN {0}", log level
* FINER, and the gives sourceMethod, sourceClass, and result
* object is logged.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of the method
* @param result Object that is being returned
*/
public void exiting(String sourceClass, String sourceMethod, Object result);
/**
* Log throwing an exception.
* <p>
* This is a convenience method to log that a method is
* terminating by throwing an exception. The logging is done
* using the FINER level.
* <p>
* If the logger is currently enabled for the given message
* level then the given arguments are stored in a LogRecord
* which is forwarded to all registered output handlers. The
* LogRecord's message is set to "THROW".
* <p>
* Note that the thrown argument is stored in the LogRecord thrown
* property, rather than the LogRecord parameters property. Thus is it
* processed specially by output Formatters and is not treated
* as a formatting parameter to the LogRecord message property.
* <p>
* @param sourceClass name of class that issued the logging request
* @param sourceMethod name of the method.
* @param thrown The Throwable that is being thrown.
*/
public void throwing(String sourceClass, String sourceMethod, Throwable thrown);
/**
* Log a SEVERE message.
* <p>
* If the logger is currently enabled for the SEVERE message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void severe(String msg);
/**
* Log a WARNING message.
* <p>
* If the logger is currently enabled for the WARNING message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void warning(String msg);
/**
* Log an INFO message.
* <p>
* If the logger is currently enabled for the INFO message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void info(String msg);
/**
* Log a CONFIG message.
* <p>
* If the logger is currently enabled for the CONFIG message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void config(String msg);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
*/
public void log(int level, String msg);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
*/
public void log(int level, String msg, Object o1);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
* @param o Objects to be inserted into the message
*/
public void log(int level, String msg, Object[] o);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
*/
public void log(int level, String msg, Object o1, Object o2);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
* @param o3 A parameter to be inserted into the message
*/
public void log(int level, String msg, Object o1, Object o2, Object o3);
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message, and the exception dump,
* is forwarded to all the
* registered output Handler objects.
* <p>
* @param level The level for this message
* @param msg The string message (or a key in the message catalog)
* @param thrown The exception to log
*/
public void log(int level, String msg, Throwable thrown );
/**
* Log a message.
* <p>
* If the logger is currently enabled for the message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void fine(String msg);
/**
* Log a FINE message.
* <p>
* If the logger is currently enabled for the FINE message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
*/
public void fine(String msg, Object o1);
/**
* Log a FINE message.
* <p>
* If the logger is currently enabled for the FINE message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o Objects to be inserted into the message
*/
public void fine(String msg, Object[] o);
/**
* Log a FINE message.
* <p>
* If the logger is currently enabled for the FINE message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
*/
public void fine(String msg, Object o1, Object o2);
/**
* Log a FINE message.
* <p>
* If the logger is currently enabled for the FINE message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
* @param o3 A parameter to be inserted into the message
*/
public void fine(String msg, Object o1, Object o2, Object o3);
/**
* Log a FINER message.
* <p>
* If the logger is currently enabled for the FINER message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void finer(String msg);
/**
* Log a FINER message.
* <p>
* If the logger is currently enabled for the FINER message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o Objects to be inserted into the message
*/
public void finer(String msg, Object[] o);
/**
* Log a FINER message.
* <p>
* If the logger is currently enabled for the FINER message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
*/
public void finer(String msg, Object o1);
/**
* Log a FINER message.
* <p>
* If the logger is currently enabled for the FINER message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
*/
public void finer(String msg, Object o1, Object o2);
/**
* Log a FINER message.
* <p>
* If the logger is currently enabled for the FINER message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
* @param o3 A parameter to be inserted into the message
*/
public void finer(String msg, Object o1, Object o2, Object o3);
/**
* Log a FINEST message.
* <p>
* If the logger is currently enabled for the FINEST message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
*/
public void finest(String msg);
/**
* Log a FINEST message.
* <p>
* If the logger is currently enabled for the FINEST message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o Objects to be inserted into the message
*/
public void finest(String msg, Object[] o);
/**
* Log a FINEST message.
* <p>
* If the logger is currently enabled for the FINEST message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
*/
public void finest(String msg, Object o1);
/**
* Log a FINEST message.
* <p>
* If the logger is currently enabled for the FINEST message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
*/
public void finest(String msg, Object o1, Object o2);
/**
* Log a FINEST message.
* <p>
* If the logger is currently enabled for the FINEST message
* level then the given message is forwarded to all the
* registered output Handler objects.
* <p>
* @param msg The string message (or a key in the message catalog)
* @param o1 A parameter to be inserted into the message
* @param o2 A parameter to be inserted into the message
* @param o3 A parameter to be inserted into the message
*/
public void finest(String msg, Object o1, Object o2, Object o3);
//================================================================
// End of convenience methods
//================================================================
/**
* Get the name for this logger.
* @return logger name. Will be null for anonymous Loggers.
*/
public String getName();
}
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