org.springframework.format.support
Class FormattingConversionServiceFactoryBean

java.lang.Object
  extended by org.springframework.format.support.FormattingConversionServiceFactoryBean
All Implemented Interfaces:
FactoryBean<FormattingConversionService>, InitializingBean

public class FormattingConversionServiceFactoryBean
extends Object
implements FactoryBean<FormattingConversionService>, InitializingBean

A factory for a FormattingConversionService that installs default formatters for common types such as numbers and datetimes.

Subclasses may override installFormatters(FormatterRegistry) to register custom formatters.

Since:
3.0
Author:
Keith Donald, Juergen Hoeller

Constructor Summary
FormattingConversionServiceFactoryBean()
           
 
Method Summary
 void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
 FormattingConversionService getObject()
          Return an instance (possibly shared or independent) of the object managed by this factory.
 Class<? extends FormattingConversionService> getObjectType()
          Return the type of object that this FactoryBean creates, or null if not known in advance.
protected  void installFormatters(FormatterRegistry registry)
          Install Formatters and Converters into the new FormattingConversionService using the FormatterRegistry SPI.
 boolean isSingleton()
          Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?
 void setConverters(Set<?> converters)
          Configure the set of custom converter objects that should be added: implementing Converter, ConverterFactory, or GenericConverter.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FormattingConversionServiceFactoryBean

public FormattingConversionServiceFactoryBean()
Method Detail

setConverters

public void setConverters(Set<?> converters)
Configure the set of custom converter objects that should be added: implementing Converter, ConverterFactory, or GenericConverter.


afterPropertiesSet

public void afterPropertiesSet()
Description copied from interface: InitializingBean
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:
afterPropertiesSet in interface InitializingBean

getObject

public FormattingConversionService 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.

If this FactoryBean is not fully initialized yet at the time of the call (for example because it is involved in a circular reference), throw a corresponding FactoryBeanNotInitializedException.

As of Spring 2.0, FactoryBeans are allowed to return null objects. The factory will consider this as normal value to be used; it will not throw a FactoryBeanNotInitializedException in this case anymore. FactoryBean implementations are encouraged to throw FactoryBeanNotInitializedException themselves now, as appropriate.

Specified by:
getObject in interface FactoryBean<FormattingConversionService>
Returns:
an instance of the bean (can be null)
See Also:
FactoryBeanNotInitializedException

getObjectType

public Class<? extends FormattingConversionService> getObjectType()
Description copied from interface: FactoryBean
Return the type of object that this FactoryBean creates, or null if not known in advance.

This allows one to check for specific types of beans without instantiating objects, for example on autowiring.

In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:
getObjectType in interface FactoryBean<FormattingConversionService>
Returns:
the type of object that this FactoryBean creates, or null if not known at the time of the call
See Also:
ListableBeanFactory.getBeansOfType(java.lang.Class)

isSingleton

public boolean isSingleton()
Description copied from interface: FactoryBean
Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

NOTE: This method returning false does not necessarily indicate that returned objects are independent instances. An implementation of the extended SmartFactoryBean interface may explicitly indicate independent instances through its SmartFactoryBean.isPrototype() method. Plain FactoryBean implementations which do not implement this extended interface are simply assumed to always return independent instances if the isSingleton() implementation returns false.

Specified by:
isSingleton in interface FactoryBean<FormattingConversionService>
Returns:
whether the exposed object is a singleton
See Also:
FactoryBean.getObject(), SmartFactoryBean.isPrototype()

installFormatters

protected void installFormatters(FormatterRegistry registry)
Install Formatters and Converters into the new FormattingConversionService using the FormatterRegistry SPI. Subclasses may override to customize the set of formatters and/or converters that are installed.