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java.lang.Objectorg.springframework.beans.factory.config.AbstractFactoryBean
org.springframework.beans.factory.config.SetFactoryBean
public class SetFactoryBean
Simple factory for shared Set instances. Allows for central setup of Sets via the "set" element in XML bean definitions.
ListFactoryBean
,
MapFactoryBean
Field Summary |
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Fields inherited from class org.springframework.beans.factory.config.AbstractFactoryBean |
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logger |
Constructor Summary | |
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SetFactoryBean()
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Method Summary | |
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protected Object |
createInstance()
Template method that subclasses must override to construct the object returned by this factory. |
Class |
getObjectType()
Return the type of object that this FactoryBean creates, or null
if not known in advance. |
void |
setSourceSet(Set sourceSet)
Set the source Set, typically populated via XML "set" elements. |
void |
setTargetSetClass(Class targetSetClass)
Set the class to use for the target Set. |
Methods inherited from class org.springframework.beans.factory.config.AbstractFactoryBean |
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afterPropertiesSet, destroy, destroyInstance, getObject, isSingleton, setSingleton |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public SetFactoryBean()
Method Detail |
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public void setSourceSet(Set sourceSet)
public void setTargetSetClass(Class targetSetClass)
Default is a linked HashSet, keeping the registration order. If no linked Set implementation is available, a plain HashSet will be used as fallback (not keeping the registration order).
CollectionFactory.createLinkedSetIfPossible(int)
public Class getObjectType()
FactoryBean
null
if not known in advance. This allows to check for specific types
of beans without instantiating objects, for example on autowiring.
For a singleton, this 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.
null
if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class)
protected Object createInstance()
AbstractFactoryBean
Invoked on initialization of this FactoryBean in case of
a singleton; else, on each AbstractFactoryBean.getObject()
call.
createInstance
in class AbstractFactoryBean
AbstractFactoryBean.getObject()
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