Class AbstractBeanFactoryBasedTargetSource

All Implemented Interfaces:
Serializable, TargetClassAware, TargetSource, Aware, BeanFactoryAware
Direct Known Subclasses:
AbstractPrototypeBasedTargetSource, LazyInitTargetSource, SimpleBeanTargetSource

public abstract class AbstractBeanFactoryBasedTargetSource extends Object implements TargetSource, BeanFactoryAware, Serializable
Base class for TargetSource implementations that are based on a Spring BeanFactory, delegating to Spring-managed bean instances.

Subclasses can create prototype instances or lazily access a singleton target, for example. See LazyInitTargetSource and AbstractPrototypeBasedTargetSource's subclasses for concrete strategies.

BeanFactory-based TargetSources are serializable. This involves disconnecting the current target and turning into a SingletonTargetSource.

Juergen Hoeller, Rod Johnson
See Also:
  • Field Details

    • logger

      protected final transient Log logger
      Logger available to subclasses.
  • Constructor Details

    • AbstractBeanFactoryBasedTargetSource

      public AbstractBeanFactoryBasedTargetSource()
  • Method Details

    • setTargetBeanName

      public void setTargetBeanName(String targetBeanName)
      Set the name of the target bean in the factory.

      The target bean should not be a singleton, else the same instance will always be obtained from the factory, resulting in the same behavior as provided by SingletonTargetSource.

      targetBeanName - name of the target bean in the BeanFactory that owns this interceptor
      See Also:
    • getTargetBeanName

      public String getTargetBeanName()
      Return the name of the target bean in the factory.
    • setTargetClass

      public void setTargetClass(Class<?> targetClass)
      Specify the target class explicitly, to avoid any kind of access to the target bean (for example, to avoid initialization of a FactoryBean instance).

      Default is to detect the type automatically, through a getType call on the BeanFactory (or even a full getBean call as fallback).

    • setBeanFactory

      public void setBeanFactory(BeanFactory beanFactory)
      Set the owning BeanFactory. We need to save a reference so that we can use the getBean method on every invocation.
      Specified by:
      setBeanFactory in interface BeanFactoryAware
      beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.
      See Also:
    • getBeanFactory

      public BeanFactory getBeanFactory()
      Return the owning BeanFactory.
    • getTargetClass

      @Nullable public Class<?> getTargetClass()
      Description copied from interface: TargetSource
      Return the type of targets returned by this TargetSource.

      Can return null, although certain usages of a TargetSource might just work with a predetermined target class.

      Specified by:
      getTargetClass in interface TargetClassAware
      Specified by:
      getTargetClass in interface TargetSource
      the type of targets returned by this TargetSource
    • isStatic

      public boolean isStatic()
      Description copied from interface: TargetSource
      Will all calls to TargetSource.getTarget() return the same object?

      In that case, there will be no need to invoke TargetSource.releaseTarget(Object), and the AOP framework can cache the return value of TargetSource.getTarget().

      Specified by:
      isStatic in interface TargetSource
      true if the target is immutable
      See Also:
    • releaseTarget

      public void releaseTarget(Object target) throws Exception
      Description copied from interface: TargetSource
      Release the given target object obtained from the TargetSource.getTarget() method, if any.
      Specified by:
      releaseTarget in interface TargetSource
      target - object obtained from a call to TargetSource.getTarget()
      Exception - if the object can't be released
    • copyFrom

      protected void copyFrom(AbstractBeanFactoryBasedTargetSource other)
      Copy configuration from the other AbstractBeanFactoryBasedTargetSource object. Subclasses should override this if they wish to expose it.
      other - object to copy configuration from
    • equals

      public boolean equals(@Nullable Object other)
      equals in class Object
    • hashCode

      public int hashCode()
      hashCode in class Object
    • toString

      public String toString()
      toString in class Object