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de.danet.an.util.log4j
Class ApplLog4jFactory  

java.lang.Object
  org.apache.commons.logging.LogFactory
      de.danet.an.util.log4j.ApplLog4jFactory

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public class ApplLog4jFactory

extends org.apache.commons.logging.LogFactory

This class provides an alternate access to the log4j logging library for Apache commons logging.. The necessity arises from the usage of log4j as logging package in the JBoss application server. As log4j is already included in JBoss' classpath and configured by JBoss, we cannot have really independent application level logging.

The central problem is the static default hierarchy used by org.apache.log4j.Category. For a distinct application level logging we need an alternate hierarchy. This factory uses such an alternate hierarchy.

This implementation is based on the Log4JFactory from Apache.

Version:

$Revision: 1.2 $

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Field Summary
private  java.util.Hashtable	attributes           The configuration attributes for this org.apache.commons.logging.LogFactory.
private  java.util.Hashtable	instances

 

Fields inherited from class org.apache.commons.logging.LogFactory

factories, FACTORY_DEFAULT, FACTORY_PROPERTIES, FACTORY_PROPERTY, SERVICE_ID

 

Constructor Summary

ApplLog4jFactory()

 

Method Summary
java.lang.Object	getAttribute(java.lang.String name)           Return the configuration attribute with the specified name (if any), or null if there is no such attribute.
java.lang.String[]	getAttributeNames()           Return an array containing the names of all currently defined configuration attributes.
org.apache.commons.logging.Log	getInstance(java.lang.Class clazz)           Convenience method to derive a name from the specified class and call getInstance(String) with it.
org.apache.commons.logging.Log	getInstance(java.lang.String name)           Construct (if necessary) and return a Log instance, using the factory's current set of configuration attributes.
void	release()           Release any internal references to previously created org.apache.commons.logging.Log instances returned by this factory.
void	removeAttribute(java.lang.String name)           Remove any configuration attribute associated with the specified name.
void	setAttribute(java.lang.String name, java.lang.Object value)           Set the configuration attribute with the specified name.

 

Methods inherited from class org.apache.commons.logging.LogFactory

getContextClassLoader, getFactory, getLog, getLog, newFactory, release, releaseAll

 

Methods inherited from class java.lang.Object

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

 

Field Detail

attributes

private java.util.Hashtable attributes

The configuration attributes for this org.apache.commons.logging.LogFactory.

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instances

private java.util.Hashtable instances

Constructor Detail

ApplLog4jFactory

public ApplLog4jFactory()

Method Detail

getAttribute

public java.lang.Object getAttribute(java.lang.String name)

Return the configuration attribute with the specified name (if any), or null if there is no such attribute.

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getAttributeNames

public java.lang.String[] getAttributeNames()

Return an array containing the names of all currently defined configuration attributes. If there are no such attributes, a zero length array is returned.

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getInstance

public org.apache.commons.logging.Log getInstance(java.lang.Class clazz)
                                           throws org.apache.commons.logging.LogConfigurationException

Convenience method to derive a name from the specified class and call getInstance(String) with it.

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getInstance

public org.apache.commons.logging.Log getInstance(java.lang.String name)
                                           throws org.apache.commons.logging.LogConfigurationException

Description copied from class: org.apache.commons.logging.LogFactory

Construct (if necessary) and return a Log instance, using the factory's current set of configuration attributes.

NOTE - Depending upon the implementation of the LogFactory you are using, the Log instance you are returned may or may not be local to the current application, and may or may not be returned again on a subsequent call with the same name argument.

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release

public void release()

Release any internal references to previously created org.apache.commons.logging.Log instances returned by this factory. This is useful environments like servlet containers, which implement application reloading by throwing away a ClassLoader. Dangling references to objects in that class loader would prevent garbage collection.

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removeAttribute

public void removeAttribute(java.lang.String name)

Remove any configuration attribute associated with the specified name. If there is no such attribute, no action is taken.

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setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object value)

Set the configuration attribute with the specified name. Calling this with a null value is equivalent to calling removeAttribute(name).

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> de >> danet >> an >> util >> [ log4j overview ]	PREV CLASS  NEXT CLASS
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