类 PropertyPathFactoryBean

构造器详细资料

• PropertyPathFactoryBean

  public PropertyPathFactoryBean()

方法详细资料

• setTargetObject

  public void setTargetObject​(Object targetObject)

  Specify a target object to apply the property path to. Alternatively, specify a target bean name.

  参数:

  targetObject - a target object, for example a bean reference or an inner bean

  另请参阅:

  setTargetBeanName(java.lang.String)

• setTargetBeanName

  public void setTargetBeanName​(String targetBeanName)

  Specify the name of a target bean to apply the property path to. Alternatively, specify a target object directly.

  参数:

  targetBeanName - the bean name to be looked up in the containing bean factory (e.g. "testBean")

  另请参阅:

  setTargetObject(java.lang.Object)

• setPropertyPath

  public void setPropertyPath​(String propertyPath)

  Specify the property path to apply to the target.

  参数:

  propertyPath - the property path, potentially nested (e.g. "age" or "spouse.age")

• setResultType

  public void setResultType​(Class<?> resultType)

  Specify the type of the result from evaluating the property path.

  Note: This is not necessary for directly specified target objects or singleton target beans, where the type can be determined through introspection. Just specify this in case of a prototype target, provided that you need matching by type (for example, for autowiring).

  参数:

  resultType - the result type, for example "java.lang.Integer"

• setBeanName

  public void setBeanName​(String beanName)

  The bean name of this PropertyPathFactoryBean will be interpreted as "beanName.property" pattern, if neither "targetObject" nor "targetBeanName" nor "propertyPath" have been specified. This allows for concise bean definitions with just an id/name.

  指定者:

  setBeanName 在接口中 BeanNameAware

  参数:

  beanName - the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils.originalBeanName(String) method to extract the original bean name (without suffix), if desired.

• setBeanFactory

  public void setBeanFactory​(BeanFactory beanFactory)

  从接口复制的说明: BeanFactoryAware
  Callback that supplies the owning factory to a bean instance.

  Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

  指定者:

  setBeanFactory 在接口中 BeanFactoryAware

  参数:

  beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

  另请参阅:

  BeanInitializationException

• getObject

  public Object getObject()
                   throws BeansException

  从接口复制的说明: 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.

  指定者:

  getObject 在接口中 FactoryBean<Object>

  返回:

  an instance of the bean (can be null)

  抛出:

  BeansException

  另请参阅:

  FactoryBeanNotInitializedException

• getObjectType

  public Class<?> getObjectType()

  从接口复制的说明: 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.

  指定者:

  getObjectType 在接口中 FactoryBean<Object>

  返回:

  the type of object that this FactoryBean creates, or null if not known at the time of the call

  另请参阅:

  ListableBeanFactory.getBeansOfType(java.lang.Class<T>)

• isSingleton

  public boolean isSingleton()

  While this FactoryBean will often be used for singleton targets, the invoked getters for the property path might return a new object for each call, so we have to assume that we're not returning the same object for each getObject() call.

  指定者:

  isSingleton 在接口中 FactoryBean<Object>

  返回:

  whether the exposed object is a singleton

  另请参阅:

  FactoryBean.getObject(), SmartFactoryBean.isPrototype()