org.apache.felix.resolver

Class Logger

java.lang.Object

org.apache.felix.resolver.Logger

public class Logger
extends java.lang.Object

This class mimics the standard OSGi LogService interface. An instance of this class is used by the framework for all logging. By default this class logs messages to standard out. The log level can be set to control the amount of logging performed, where a higher number results in more logging. A log level of zero turns off logging completely.

The log levels match those specified in the OSGi Log Service (i.e., 1 = error, 2 = warning, 3 = information, and 4 = debug). The default value is 1.

This class also uses the System Bundle's context to track log services and will use the highest ranking log service, if present, as a back end instead of printing to standard out. The class uses reflection to invoking the log service's method to avoid a dependency on the log interface.

Field Summary

Fields

Modifier and Type	Field and Description
static int	LOG_DEBUG
static int	LOG_ERROR
static int	LOG_INFO
static int	LOG_WARNING
private int	m_logLevel

Constructor Summary

Constructors

Constructor and Description
Logger(int i)

Method Summary

Modifier and Type	Method and Description
private void	_log(int level, java.lang.String msg, java.lang.Throwable throwable)
void	debug(java.lang.String msg)
protected void	doLog(int level, java.lang.String msg, java.lang.Throwable throwable)
int	getLogLevel()
boolean	isDebugEnabled()
void	log(int level, java.lang.String msg)
void	log(int level, java.lang.String msg, java.lang.Throwable throwable)
void	logUsesConstraintViolation(org.osgi.resource.Resource resource, ResolutionError error)
void	setLogLevel(int i)

Methods inherited from class java.lang.Object

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

Field Detail

LOG_ERROR

public static final int LOG_ERROR

See Also:

Constant Field Values

LOG_WARNING

public static final int LOG_WARNING

See Also:

Constant Field Values

LOG_INFO

public static final int LOG_INFO

See Also:

Constant Field Values

LOG_DEBUG

public static final int LOG_DEBUG

See Also:

Constant Field Values

m_logLevel

private int m_logLevel

Constructor Detail

Logger

public Logger(int i)

Method Detail

setLogLevel

public final void setLogLevel(int i)

getLogLevel

public final int getLogLevel()

log

public final void log(int level,
                      java.lang.String msg)

log

public final void log(int level,
                      java.lang.String msg,
                      java.lang.Throwable throwable)

isDebugEnabled

public boolean isDebugEnabled()

debug

public final void debug(java.lang.String msg)

doLog

protected void doLog(int level,
                     java.lang.String msg,
                     java.lang.Throwable throwable)

_log

private void _log(int level,
                  java.lang.String msg,
                  java.lang.Throwable throwable)

logUsesConstraintViolation

public void logUsesConstraintViolation(org.osgi.resource.Resource resource,
                                       ResolutionError error)