com.atlassian.bamboo.osgi

Class ReloadableBeanFactoryImpl

java.lang.Object

com.atlassian.bamboo.osgi.ReloadableBeanFactoryImpl

All Implemented Interfaces:

Resettable, org.springframework.beans.factory.FactoryBean

public class ReloadableBeanFactoryImpl
extends Object
implements Resettable, org.springframework.beans.factory.FactoryBean

This factory wraps a FactoryBean delegate. Instead of returning the produced object directly, it wraps that object in a proxy. Under normal circumstances, this will be transparent to the user and the class will behave like a regular FactoryBean (and the returned object like a regular object).

The difference is that the proxies returned from this factory can be made to point to a different object, freshly retrieved from the FactoryBean. This lets us reload OSGi services without touching existing references to old services in Spring beans that are already wired.

If factory is created using ReloadableBeanFactoryImpl(Class, Object...) constructor, the new bean will be retrieved from a new FactoryBean object (it's the recommended way of using this class, because it will deal with stateful FactoryBeans).

ReloadableBeanFactoriesImpl bean processor automatically registers all instances of Resettable and will call reload on each of them when asked. This happens during hotswap import.

Field Summary

Fields

Modifier and Type	Field and Description
protected io.atlassian.util.concurrent.ResettableLazyReference<Object>	bean
protected org.springframework.beans.factory.FactoryBean	factoryBean
protected io.atlassian.util.concurrent.ResettableLazyReference<Object>	proxyReference

Fields inherited from interface org.springframework.beans.factory.FactoryBean

OBJECT_TYPE_ATTRIBUTE

Constructor Summary

Constructors

Constructor and Description
ReloadableBeanFactoryImpl(Class<?> cls, Object... args) Use this one to be able to reload bean and factory that will be created from class constructor with provided arguments

Method Summary

Modifier and Type	Method and Description
Object	getObject()
Class	getObjectType()
boolean	isSingleton()
void	reset()

Methods inherited from class java.lang.Object

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

Field Detail

bean

protected final io.atlassian.util.concurrent.ResettableLazyReference<Object> bean

factoryBean

protected volatile org.springframework.beans.factory.FactoryBean factoryBean

proxyReference

protected final io.atlassian.util.concurrent.ResettableLazyReference<Object> proxyReference

Constructor Detail

ReloadableBeanFactoryImpl

public ReloadableBeanFactoryImpl(Class<?> cls,
                                 Object... args)

Use this one to be able to reload bean and factory that will be created from class constructor with provided arguments

Parameters:

cls - factory bean class

args - constructor arguments to create factory bean

Method Detail

getObject

public Object getObject()
                 throws Exception

Specified by:

getObject in interface org.springframework.beans.factory.FactoryBean

Throws:

Exception

getObjectType

public Class getObjectType()

Specified by:

getObjectType in interface org.springframework.beans.factory.FactoryBean

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.springframework.beans.factory.FactoryBean

reset

public void reset()

Specified by:

reset in interface Resettable