org.springframework.beans.factory.config
Class CommonsLogFactoryBean

java.lang.Object
  org.springframework.beans.factory.config.CommonsLogFactoryBean

All Implemented Interfaces:

FactoryBean

public class CommonsLogFactoryBean

extends java.lang.Object

implements FactoryBean

Factory bean for commons-logging Log instances. Will expose the created Log object on getBean calls, and can be passed to bean properites of type org.apache.commons.logging.Log.

Useful for sharing Log instances among multiple beans instead of using one Log instance per class name, e.g. for common log topics.

Since:

16.11.2003

Author:

Juergen Hoeller

See Also:

Log

Constructor Summary

CommonsLogFactoryBean()

Method Summary

java.lang.Object	getObject() Return an instance (possibly shared or independent) of the object managed by this factory.
java.lang.Class	getObjectType() Return the type of object that this FactoryBean creates, or null if not known in advance.
boolean	isSingleton() Is the bean managed by this factory a singleton or a prototype?
void	setLogName(java.lang.String logName)

Methods inherited from class java.lang.Object

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

Constructor Detail

CommonsLogFactoryBean

public CommonsLogFactoryBean()

Method Detail

setLogName

public void setLogName(java.lang.String logName)

getObject

public java.lang.Object getObject()

Description copied from interface: FactoryBean

Return an instance (possibly shared or independent) of the object managed by this factory. As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

Specified by:

getObject in interface FactoryBean

Returns:

an instance of the bean (should never be null)

getObjectType

public java.lang.Class getObjectType()

Description copied from interface: FactoryBean

Return the type of object that this FactoryBean creates, or null if not known in advance. This allows to check for specific types of beans without instantiating objects, e.g. on autowiring.

For a singleton, this can simply return getObject().getClass(), or even null, as autowiring will always check the actual objects for singletons. For prototypes, returning a meaningful type here is highly advisable, as autowiring will simply ignore them else.

Specified by:

getObjectType in interface FactoryBean

Returns:

the type of object that this FactoryBean creates, or null

See Also:

ListableBeanFactory.getBeansOfType(java.lang.Class, boolean, boolean)

isSingleton

public boolean isSingleton()

Description copied from interface: FactoryBean

Is the bean managed by this factory a singleton or a prototype? That is, will getObject() always return the same object?

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory.

Specified by:

isSingleton in interface FactoryBean

Returns:

if this bean is a singleton