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public interface: SmartFactoryBean [javadoc | source]

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Extension of the FactoryBean interface. Implementations may indicate whether they always return independent instances, for the case where their #isSingleton() implementation returning false does not clearly indicate independent instances.

Plain FactoryBean implementations which do not implement this extended interface are simply assumed to always return independent instances if their #isSingleton() implementation returns false; the exposed object is only accessed on demand.

NOTE: This interface is a special purpose interface, mainly for internal use within the framework and within collaborating frameworks. In general, application-provided FactoryBeans should simply implement the plain FactoryBean interface. New methods might be added to this extended interface even in point releases.

Method from org.springframework.beans.factory.SmartFactoryBean Summary:
isEagerInit,   isPrototype
Method from org.springframework.beans.factory.SmartFactoryBean Detail:
 public boolean isEagerInit()
    Does this FactoryBean expect eager initialization, that is, eagerly initialize itself as well as expect eager initialization of its singleton object (if any)?

    A standard FactoryBean is not expected to initialize eagerly: Its #getObject() will only be called for actual access, even in case of a singleton object. Returning true from this method suggests that #getObject() should be called eagerly, also applying post-processors eagerly. This may make sense in case of a singleton object, in particular if post-processors expect to be applied on startup.

 public boolean isPrototype()
    Is the object managed by this factory a prototype? That is, will #getObject() always return an independent instance?

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

    This method is supposed to strictly check for independent instances; it should not return true for scoped objects or other kinds of non-singleton, non-independent objects. For this reason, this is not simply the inverted form of #isSingleton() .