Package org.springframework.beans.factory.serviceloader

Class AbstractServiceLoaderBasedFactoryBean

java.lang.Object

org.springframework.beans.factory.config.AbstractFactoryBean<Object>

org.springframework.beans.factory.serviceloader.AbstractServiceLoaderBasedFactoryBean

All Implemented Interfaces:

Aware, BeanClassLoaderAware, BeanFactoryAware, DisposableBean, FactoryBean<Object>, InitializingBean

Direct Known Subclasses:

ServiceFactoryBean, ServiceListFactoryBean, ServiceLoaderFactoryBean

public abstract class AbstractServiceLoaderBasedFactoryBean
extends AbstractFactoryBean<Object>
implements BeanClassLoaderAware

Abstract base class for FactoryBeans operating on the JDK 1.6 ServiceLoader facility.

Since:

2.5

Author:

Juergen Hoeller

See Also:

• ServiceLoader

Field Summary

Fields inherited from class org.springframework.beans.factory.config.AbstractFactoryBean

logger

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

OBJECT_TYPE_ATTRIBUTE

Constructor Summary

Constructors

Constructor	Description
AbstractServiceLoaderBasedFactoryBean()

Method Summary

Modifier and Type	Method	Description
protected Object	createInstance()	Delegates to getObjectToExpose(java.util.ServiceLoader).
protected abstract Object	getObjectToExpose(ServiceLoader<?> serviceLoader)	Determine the actual object to expose for the given ServiceLoader.
Class<?>	getServiceType()	Return the desired service type.
void	setBeanClassLoader(ClassLoader beanClassLoader)	Callback that supplies the bean class loader to a bean instance.
void	setServiceType(Class<?> serviceType)	Specify the desired service type (typically the service's public API).

Methods inherited from class org.springframework.beans.factory.config.AbstractFactoryBean

afterPropertiesSet, destroy, destroyInstance, getBeanFactory, getBeanTypeConverter, getEarlySingletonInterfaces, getObject, getObjectType, isSingleton, setBeanFactory, setSingleton

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractServiceLoaderBasedFactoryBean

public AbstractServiceLoaderBasedFactoryBean()

Method Details

setServiceType

public void setServiceType(@Nullable
 Class<?> serviceType)

Specify the desired service type (typically the service's public API).

getServiceType

@Nullable
public Class<?> getServiceType()

Return the desired service type.

setBeanClassLoader

public void setBeanClassLoader(@Nullable
 ClassLoader beanClassLoader)

Description copied from interface: BeanClassLoaderAware

Callback that supplies the bean class loader to a bean instance.

Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean's InitializingBean.afterPropertiesSet() method or a custom init-method.

Specified by:

setBeanClassLoader in interface BeanClassLoaderAware

Overrides:

setBeanClassLoader in class AbstractFactoryBean<Object>

Parameters:

beanClassLoader - the owning class loader

createInstance

protected Object createInstance()

Delegates to getObjectToExpose(java.util.ServiceLoader).

Specified by:

createInstance in class AbstractFactoryBean<Object>

Returns:

the object to expose

See Also:

• AbstractFactoryBean.getObject()

getObjectToExpose

protected abstract Object getObjectToExpose(ServiceLoader<?> serviceLoader)

Determine the actual object to expose for the given ServiceLoader.

Left to concrete subclasses.

Parameters:

serviceLoader - the ServiceLoader for the configured service class

Returns:

the object to expose