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## org.jivesoftware.util.log
Class Logger

    java.lang.Object
      org.jivesoftware.util.log.Logger

    public class Logger

extends Object

The object interacted with by client objects to perform logging.

Author:
  Peter Donald

Field Summary
`static char` | `CATEGORY_SEPARATOR`

Method Summary
`void` | `debug(String message)` Log a debug priority event.
`void` | `debug(String message, Throwable throwable)` Log a debug priority event.
`void` | `error(String message)` Log a error priority event.
`void` | `error(String message, Throwable throwable)` Log a error priority event.
`void` | `fatalError(String message)` Log a fatalError priority event.
`void` | `fatalError(String message, Throwable throwable)` Log a fatalError priority event.
`String` | `getCategory()` Deprecated. This method violates Inversion of Control principle. If you are relying on its presence then there may be something wrong with the design of your system
`Logger` | `getChildLogger(String subCategory)` Create a new child logger.
`Logger[]` | `getChildren()` Get all the child Loggers of current logger.
`LogTarget[]` | `getLogTargets()` Get a copy of log targets for this logger.
`Priority` | `getPriority()` Deprecated. This method violates Inversion of Control principle. It will downgraded to protected access in a future release. When user needs to check priority it is advised that they use the is[Priority]Enabled() functions.
`void` | `info(String message)` Log a info priority event.
`void` | `info(String message, Throwable throwable)` Log a info priority event.
`boolean` | `isDebugEnabled()` Determine if messages of priority DEBUG will be logged.
`boolean` | `isErrorEnabled()` Determine if messages of priority ERROR will be logged.
`boolean` | `isFatalErrorEnabled()` Determine if messages of priority FATAL_ERROR will be logged.
`boolean` | `isInfoEnabled()` Determine if messages of priority INFO will be logged.
`boolean` | `isPriorityEnabled(Priority priority)` Determine if messages of priority will be logged.
`boolean` | `isWarnEnabled()` Determine if messages of priority WARN will be logged.
`void` | `log(Priority priority, String message)` Log a event at specific priority with a certain message.
`void` | `log(Priority priority, String message, Throwable throwable)` Log a event at specific priority with a certain message and throwable.
`void` | `setAdditivity(boolean additivity)` Make this logger additive, which means send all log events to parent loggers LogTargets regardless of whether or not the LogTargets have been overidden.
`void` | `setLogTargets(LogTarget[] logTargets)` Set the log targets for this logger.
`void` | `setPriority(Priority priority)` Set the priority for this logger.
`void` | `unsetLogTargets()` Unset the logtargets for this logger.
`void` | `unsetLogTargets(boolean recursive)` Unset the logtargets for this logger and all child loggers if recursive is set.
`void` | `unsetPriority()` Unset the priority of Logger.
`void` | `unsetPriority(boolean recursive)` Unset the priority of Logger.
`void` | `warn(String message)` Log a warn priority event.
`void` | `warn(String message, Throwable throwable)` Log a warn priority event.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### CATEGORY_SEPARATOR

    public static final char CATEGORY_SEPARATOR

See Also:
  Constant Field Values

Method Detail

### isDebugEnabled

    public final boolean isDebugEnabled()

  Determine if messages of priority DEBUG will be logged.

  Returns:
    true if DEBUG messages will be logged

### debug

    public final void debug(String message,
                            Throwable throwable)

  Log a debug priority event.

  Parameters:
    `message` - the message
    `throwable` - the throwable

### debug

    public final void debug(String message)

  Log a debug priority event.

  Parameters:
    `message` - the message

### isInfoEnabled

    public final boolean isInfoEnabled()

  Determine if messages of priority INFO will be logged.

  Returns:
    true if INFO messages will be logged

### info

    public final void info(String message,
                           Throwable throwable)

  Log a info priority event.

  Parameters:
    `message` - the message

### info

    public final void info(String message)

  Log a info priority event.

  Parameters:
    `message` - the message

### isWarnEnabled

    public final boolean isWarnEnabled()

  Determine if messages of priority WARN will be logged.

  Returns:
    true if WARN messages will be logged

### warn

    public final void warn(String message,
                           Throwable throwable)

  Log a warn priority event.

  Parameters:
    `message` - the message
    `throwable` - the throwable

### warn

    public final void warn(String message)

  Log a warn priority event.

  Parameters:
    `message` - the message

### isErrorEnabled

    public final boolean isErrorEnabled()

  Determine if messages of priority ERROR will be logged.

  Returns:
    true if ERROR messages will be logged

### error

    public final void error(String message,
                            Throwable throwable)

  Log a error priority event.

  Parameters:
    `message` - the message
    `throwable` - the throwable

### error

    public final void error(String message)

  Log a error priority event.

  Parameters:
    `message` - the message

### isFatalErrorEnabled

    public final boolean isFatalErrorEnabled()

  Determine if messages of priority FATAL_ERROR will be logged.

  Returns:
    true if FATAL_ERROR messages will be logged

### fatalError

    public final void fatalError(String message,
                                 Throwable throwable)

  Log a fatalError priority event.

  Parameters:
    `message` - the message
    `throwable` - the throwable

### fatalError

    public final void fatalError(String message)

  Log a fatalError priority event.

  Parameters:
    `message` - the message

### setAdditivity

    public final void setAdditivity(boolean additivity)

  Make this logger additive, which means send all log events to parent loggers LogTargets regardless of whether or not the LogTargets have been overidden.

  This is derived from Log4js notion of Additivity.

  Parameters:
    `additivity` - true to make logger additive, false otherwise

### isPriorityEnabled

    public final boolean isPriorityEnabled(Priority priority)

  Determine if messages of priority will be logged.

  Returns:
    true if messages will be logged

### log

    public final void log(Priority priority,
                          String message,
                          Throwable throwable)

  Log a event at specific priority with a certain message and throwable.

  Parameters:
    `message` - the message
    `priority` - the priority
    `throwable` - the throwable

### log

    public final void log(Priority priority,
                          String message)

  Log a event at specific priority with a certain message.

  Parameters:
    `message` - the message
    `priority` - the priority

### setPriority

    public void setPriority(Priority priority)

  Set the priority for this logger.

  Parameters:
    `priority` - the priority

### unsetPriority

    public void unsetPriority()

  Unset the priority of Logger. (Thus it will use it's parent's priority or DEBUG if no parent.

### unsetPriority

    public void unsetPriority(boolean recursive)

  Unset the priority of Logger. (Thus it will use it's parent's priority or DEBUG if no parent. If recursive is true unset priorities of all child loggers.

  Parameters:
    `recursive` - true to unset priority of all child loggers

### setLogTargets

    public void setLogTargets(LogTarget[] logTargets)

  Set the log targets for this logger.

  Parameters:
    `logTargets` - the Log Targets

### unsetLogTargets

    public void unsetLogTargets()

  Unset the logtargets for this logger. This logger (and thus all child loggers who don't specify logtargets) will inherit from the parents LogTargets.

### unsetLogTargets

    public void unsetLogTargets(boolean recursive)

  Unset the logtargets for this logger and all child loggers if recursive is set. The loggers unset (and all child loggers who don't specify logtargets) will inherit from the parents LogTargets.

### getChildren

    public Logger[] getChildren()

  Get all the child Loggers of current logger.

  Returns:
    the child loggers

### getChildLogger

    public Logger getChildLogger(String subCategory)
                          throws IllegalArgumentException

  Create a new child logger. The category of child logger is [current-category].subcategory

  Parameters:
    `subCategory` - the subcategory of this logger
  Returns:
    the new logger
  Throws:
    `IllegalArgumentException` - if subCategory has an empty element name

### getPriority

    public final Priority getPriority()

  Deprecated. This method violates Inversion of Control principle. It will downgraded to protected access in a future release. When user needs to check priority it is advised that they use the is[Priority]Enabled() functions.

  Retrieve priority associated with Logger.

  Returns:
    the loggers priority

### getCategory

    public final String getCategory()

  Deprecated. This method violates Inversion of Control principle. If you are relying on its presence then there may be something wrong with the design of your system

  Retrieve category associated with logger.

  Returns:
    the Category

### getLogTargets

    public LogTarget[] getLogTargets()

  Get a copy of log targets for this logger.

  Returns:
    the child loggers

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