Hierarchy

java.lang.Object
- com.fr.third.apache.log4j.Hierarchy

所有已实现的接口:

LoggerRepository, RendererSupport, ThrowableRendererSupport
```
public class Hierarchy
extends java.lang.Object
implements LoggerRepository, RendererSupport, ThrowableRendererSupport
```
This class is specialized in retrieving loggers by name and also maintaining the logger hierarchy.
The casual user does not have to deal with this class directly.
The structure of the logger hierarchy is maintained by the getLogger(java.lang.String) method. The hierarchy is such that children link to their parent but parents do not have any pointers to their children. Moreover, loggers can be instantiated in any order, in particular descendant before ancestor.
In case a descendant is created before a particular ancestor, then it creates a provision node for the ancestor and adds itself to the provision node. Other descendants of the same ancestor add themselves to the previously created provision node.

作者:

Ceki Gülcü

构造器概要

构造器
构造器和说明

Hierarchy(Logger root)
Create a new logger hierarchy.

构造器
构造器和说明
`Hierarchy(Logger root)` Create a new logger hierarchy.

方法概要

方法
限定符和类型	方法和说明
`void`	`addHierarchyEventListener(HierarchyEventListener listener)` Add a `HierarchyEventListener` event to the repository.
`void`	`addRenderer(java.lang.Class classToRender, ObjectRenderer or)` Add an object renderer for a specific class.
`void`	`clear()` This call will clear all logger definitions from the internal hashtable.
`void`	`emitNoAppenderWarning(Category cat)`
`Logger`	`exists(java.lang.String name)` Check if the named logger exists in the hierarchy.
`void`	`fireAddAppenderEvent(Category logger, Appender appender)`
`java.util.Enumeration`	`getCurrentCategories()` 已过时。 Please use `getCurrentLoggers()` instead.
`java.util.Enumeration`	`getCurrentLoggers()` Returns all the currently defined categories in this hierarchy as an `Enumeration`.
`Logger`	`getLogger(java.lang.String name)` Return a new logger instance named as the first parameter using the default factory.
`Logger`	`getLogger(java.lang.String name, LoggerFactory factory)` Return a new logger instance named as the first parameter using `factory`.
`RendererMap`	`getRendererMap()` Get the renderer map for this hierarchy.
`Logger`	`getRootLogger()` Get the root of this hierarchy.
`Level`	`getThreshold()` Returns a `Level` representation of the `enable` state.
`ThrowableRenderer`	`getThrowableRenderer()` Get throwable renderer.
`boolean`	`isDisabled(int level)` This method will return `true` if this repository is disabled for `level` object passed as parameter and `false` otherwise.
`void`	`overrideAsNeeded(java.lang.String override)` 已过时。 Deprecated with no replacement.
`void`	`resetConfiguration()` Reset all values contained in this hierarchy instance to their default.
`void`	`setDisableOverride(java.lang.String override)` 已过时。 Deprecated with no replacement.
`void`	`setRenderer(java.lang.Class renderedClass, ObjectRenderer renderer)` Used by subclasses to add a renderer to the hierarchy passed as parameter.
`void`	`setThreshold(Level l)` Enable logging for logging requests with level `l` or higher.
`void`	`setThreshold(java.lang.String levelStr)` The string form of `setThreshold(Level)`.
`void`	`setThrowableRenderer(ThrowableRenderer renderer)` Set throwable renderer.
`void`	`shutdown()` Shutting down a hierarchy will safely close and remove all appenders in all categories including the root logger.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - Hierarchy
```
public Hierarchy(Logger root)
```
    Create a new logger hierarchy.
    
    参数:
    root - The root of the new hierarchy.
- 方法详细资料
  - addRenderer
```
public void addRenderer(java.lang.Class classToRender,
               ObjectRenderer or)
```
    Add an object renderer for a specific class.
  - addHierarchyEventListener
```
public void addHierarchyEventListener(HierarchyEventListener listener)
```
    从接口复制的说明: LoggerRepository
    
    Add a HierarchyEventListener event to the repository.
    
    指定者:
    
    addHierarchyEventListener 在接口中 LoggerRepository
  - clear
```
public void clear()
```
    This call will clear all logger definitions from the internal hashtable. Invoking this method will irrevocably mess up the logger hierarchy.
    You should really know what you are doing before invoking this method.
    
    从以下版本开始:
    
    0.9.0
  - emitNoAppenderWarning
```
public void emitNoAppenderWarning(Category cat)
```
    指定者:
    
    emitNoAppenderWarning 在接口中 LoggerRepository
  - exists
```
public Logger exists(java.lang.String name)
```
    Check if the named logger exists in the hierarchy. If so return its reference, otherwise returns null.
    
    指定者:
    
    exists 在接口中 LoggerRepository
    
    参数:
    name - The name of the logger to search for.
  - setThreshold
```
public void setThreshold(java.lang.String levelStr)
```
    The string form of setThreshold(Level).
    
    指定者:
    
    setThreshold 在接口中 LoggerRepository
  - setThreshold
```
public void setThreshold(Level l)
```
    Enable logging for logging requests with level l or higher. By default all levels are enabled.
    
    指定者:
    
    setThreshold 在接口中 LoggerRepository
    
    参数:
    l - The minimum level for which logging requests are sent to their appenders.
  - fireAddAppenderEvent
```
public void fireAddAppenderEvent(Category logger,
                        Appender appender)
```
    指定者:
    
    fireAddAppenderEvent 在接口中 LoggerRepository
  - getThreshold
```
public Level getThreshold()
```
    Returns a Level representation of the enable state.
    
    指定者:
    
    getThreshold 在接口中 LoggerRepository
    
    从以下版本开始:
    
    1.2
  - getLogger
```
public Logger getLogger(java.lang.String name)
```
    Return a new logger instance named as the first parameter using the default factory.
    If a logger of that name already exists, then it will be returned. Otherwise, a new logger will be instantiated and then linked with its existing ancestors as well as children.
    
    指定者:
    
    getLogger 在接口中 LoggerRepository
    
    参数:
    name - The name of the logger to retrieve.
  - getLogger
```
public Logger getLogger(java.lang.String name,
               LoggerFactory factory)
```
    Return a new logger instance named as the first parameter using factory.
    If a logger of that name already exists, then it will be returned. Otherwise, a new logger will be instantiated by the factory parameter and linked with its existing ancestors as well as children.
    
    指定者:
    
    getLogger 在接口中 LoggerRepository
    
    参数:
    name - The name of the logger to retrieve.
    factory - The factory that will make the new logger instance.
  - getCurrentLoggers
```
public java.util.Enumeration getCurrentLoggers()
```
    Returns all the currently defined categories in this hierarchy as an Enumeration.
    The root logger is not included in the returned Enumeration.
    
    指定者:
    
    getCurrentLoggers 在接口中 LoggerRepository
  - getCurrentCategories
```
public java.util.Enumeration getCurrentCategories()
```
    已过时。 Please use getCurrentLoggers() instead.
    
    从接口复制的说明: LoggerRepository
    
    Deprecated. Please use LoggerRepository.getCurrentLoggers() instead.
    
    指定者:
    
    getCurrentCategories 在接口中 LoggerRepository
  - getRendererMap
```
public RendererMap getRendererMap()
```
    Get the renderer map for this hierarchy.
    
    指定者:
    
    getRendererMap 在接口中 RendererSupport
  - getRootLogger
```
public Logger getRootLogger()
```
    Get the root of this hierarchy.
    
    指定者:
    
    getRootLogger 在接口中 LoggerRepository
    
    从以下版本开始:
    
    0.9.0
  - isDisabled
```
public boolean isDisabled(int level)
```
    This method will return true if this repository is disabled for level object passed as parameter and false otherwise. See also the threshold emthod.
    
    指定者:
    
    isDisabled 在接口中 LoggerRepository
  - overrideAsNeeded
```
public void overrideAsNeeded(java.lang.String override)
```
    已过时。 Deprecated with no replacement.
  - resetConfiguration
```
public void resetConfiguration()
```
    Reset all values contained in this hierarchy instance to their default. This removes all appenders from all categories, sets the level of all non-root categories to null, sets their additivity flag to true and sets the level of the root logger to DEBUG. Moreover, message disabling is set its default "off" value.
    Existing categories are not removed. They are just reset.
    This method should be used sparingly and with care as it will block all logging until it is completed.
    
    指定者:
    
    resetConfiguration 在接口中 LoggerRepository
    
    从以下版本开始:
    
    0.8.5
  - setDisableOverride
```
public void setDisableOverride(java.lang.String override)
```
    已过时。 Deprecated with no replacement.
    
    Does nothing.
  - setRenderer
```
public void setRenderer(java.lang.Class renderedClass,
               ObjectRenderer renderer)
```
    Used by subclasses to add a renderer to the hierarchy passed as parameter.
    
    指定者:
    
    setRenderer 在接口中 RendererSupport
  - setThrowableRenderer
```
public void setThrowableRenderer(ThrowableRenderer renderer)
```
    Set throwable renderer.
    
    指定者:
    
    setThrowableRenderer 在接口中 ThrowableRendererSupport
    
    参数:
    renderer - renderer, may be null.
  - getThrowableRenderer
```
public ThrowableRenderer getThrowableRenderer()
```
    Get throwable renderer.
    
    指定者:
    
    getThrowableRenderer 在接口中 ThrowableRendererSupport
    
    返回:
    throwable renderer, may be null.
  - shutdown
```
public void shutdown()
```
    Shutting down a hierarchy will safely close and remove all appenders in all categories including the root logger.
    Some appenders such as SocketAppender and AsyncAppender need to be closed before the application exists. Otherwise, pending logging events might be lost.
    The shutdown method is careful to close nested appenders before closing regular appenders. This is allows configurations where a regular appender is attached to a logger and again to a nested appender.
    
    指定者:
    
    shutdown 在接口中 LoggerRepository
    
    从以下版本开始:
    
    1.0

类 Hierarchy

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

Hierarchy

方法详细资料

addRenderer

addHierarchyEventListener

clear

emitNoAppenderWarning

exists

setThreshold

setThreshold

fireAddAppenderEvent

getThreshold

getLogger

getLogger

getCurrentLoggers

getCurrentCategories

getRendererMap

getRootLogger

isDisabled

overrideAsNeeded

resetConfiguration

setDisableOverride

setRenderer

setThrowableRenderer

getThrowableRenderer

shutdown