org.springframework.beans.factory.serviceloader

Class AbstractServiceLoaderBasedFactoryBean

java.lang.Object

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

org.springframework.beans.factory.serviceloader.AbstractServiceLoaderBasedFactoryBean

All Implemented Interfaces:

Aware, BeanClassLoaderAware, BeanFactoryAware, DisposableBean, FactoryBean<java.lang.Object>, InitializingBean

Direct Known Subclasses:

ServiceFactoryBean, ServiceListFactoryBean, ServiceLoaderFactoryBean

public abstract class AbstractServiceLoaderBasedFactoryBean
extends AbstractFactoryBean<java.lang.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

Modifier and Type	Field and Description
private java.lang.ClassLoader	beanClassLoader
private java.lang.Class<?>	serviceType

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

logger

Constructor Summary

Constructors

Constructor and Description
AbstractServiceLoaderBasedFactoryBean()

Method Summary

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

Field Detail

serviceType

private java.lang.Class<?> serviceType

beanClassLoader

private java.lang.ClassLoader beanClassLoader

Constructor Detail

AbstractServiceLoaderBasedFactoryBean

public AbstractServiceLoaderBasedFactoryBean()

Method Detail

setServiceType

public void setServiceType(java.lang.Class<?> serviceType)

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

getServiceType

public java.lang.Class<?> getServiceType()

Return the desired service type.

setBeanClassLoader

public void setBeanClassLoader(java.lang.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<java.lang.Object>

Parameters:

beanClassLoader - the owning class loader; may be null in which case a default ClassLoader must be used, for example the ClassLoader obtained via ClassUtils.getDefaultClassLoader()

createInstance

protected java.lang.Object createInstance()

Delegates to getObjectToExpose(java.util.ServiceLoader).

Specified by:

createInstance in class AbstractFactoryBean<java.lang.Object>

Returns:

the object to expose

See Also:

AbstractFactoryBean.getObject()

getObjectToExpose

protected abstract java.lang.Object getObjectToExpose(java.util.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