public class FormattingConversionServiceFactoryBean extends Object implements FactoryBean<FormattingConversionService>, EmbeddedValueResolverAware, InitializingBean
FormattingConversionServiceconfigured with converters and formatters for common types such as numbers and datetimes.
Additional converters and formatters can be registered declaratively through
setFormatters(Set). Another option
is to register converters and formatters in code by implementing the
FormatterRegistrar interface. You can then configure provide the set
of registrars to use through
A good example for registering converters and formatters in code is
JodaTimeFormatterRegistrar, which registers a number of
date-related formatters and converters. For a more detailed list of cases
FactoryBean implementations, this class is suitable for
use when configuring a Spring application context using Spring
XML. When configuring the container with
classes, simply instantiate, configure and return the appropriate
FormattingConversionService object from a
|Constructor and Description|
|Modifier and Type||Method and Description|
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
Return an instance (possibly shared or independent) of the object managed by this factory.
Return the type of object that this FactoryBean creates, or
Is the object managed by this factory a singleton? That is, will
Configure the set of custom converter objects that should be added.
Set the StringValueResolver to use for resolving embedded definition values.
Configure the set of custom formatter objects that should be added.
Indicate whether default formatters should be registered or not.
public void setConverters(Set<?> converters)
public void setFormatters(Set<?> formatters)
public void setFormatterRegistrars(Set<FormatterRegistrar> formatterRegistrars)
FormatterRegistrars are useful when registering multiple related converters and formatters for a formatting category, such as Date formatting. All types related needed to support the formatting category can be registered from one place.
FormatterRegistrars can also be used to register Formatters indexed under a specific field type different from its own <T>, or when registering a Formatter from a Printer/Parser pair.
public void setRegisterDefaultFormatters(boolean registerDefaultFormatters)
By default, built-in formatters are registered. This flag can be used to turn that off and rely on explicitly registered formatters only.
public void setEmbeddedValueResolver(StringValueResolver embeddedValueResolver)
public void afterPropertiesSet()
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.
@Nullable public FormattingConversionService getObject()
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
As of Spring 2.0, FactoryBeans are allowed to return
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.
public Class<? extends FormattingConversionService> getObjectType()
nullif 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.
nullif not known at the time of the call
public boolean isSingleton()
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
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
may explicitly indicate independent instances through its
SmartFactoryBean.isPrototype() method. Plain
implementations which do not implement this extended interface are
simply assumed to always return independent instances if the
isSingleton() implementation returns
The default implementation returns
true, since a
FactoryBean typically manages a singleton instance.