Class SimpleInstantiationStrategy

java.lang.Object
org.springframework.beans.factory.support.SimpleInstantiationStrategy
All Implemented Interfaces:
InstantiationStrategy
Direct Known Subclasses:
CglibSubclassingInstantiationStrategy
public class SimpleInstantiationStrategy extends Object implements InstantiationStrategy
Simple object instantiation strategy for use in a BeanFactory.

Does not support Method Injection, although it provides hooks for subclasses to override to add Method Injection support, for example by overriding methods.

Since:
1.1
Author:
Rod Johnson, Juergen Hoeller, Stephane Nicoll

  • Constructor Details

    • SimpleInstantiationStrategy

      public SimpleInstantiationStrategy()

  • Method Details

    • getCurrentlyInvokedFactoryMethod

      public static @Nullable Method getCurrentlyInvokedFactoryMethod()
      Return the factory method currently being invoked or null if none.

      Allows factory method implementations to determine whether the current caller is the container itself as opposed to user code.

    • instantiateWithFactoryMethod

      public static <T> T instantiateWithFactoryMethod(Method method, Supplier<T> instanceSupplier)
      Invoke the given instanceSupplier with the factory method exposed as being invoked.
      Type Parameters:
      T - the type of the instance
      Parameters:
      method - the factory method to expose
      instanceSupplier - the instance supplier
      Returns:
      the result of the instance supplier
      Since:
      6.2

    • instantiate

      public Object instantiate(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner)
      Description copied from interface: InstantiationStrategy
      Return an instance of the bean with the given name in this factory.
      Specified by:
      instantiate in interface InstantiationStrategy
      Parameters:
      bd - the bean definition
      beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.
      owner - the owning BeanFactory
      Returns:
      a bean instance for this bean definition

    • instantiateWithMethodInjection

      protected Object instantiateWithMethodInjection(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner)
      Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition. Instantiation should use a no-arg constructor.

    • instantiate

      public Object instantiate(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner, Constructor<?> ctor, Object... args)
      Description copied from interface: InstantiationStrategy
      Return an instance of the bean with the given name in this factory, creating it via the given constructor.
      Specified by:
      instantiate in interface InstantiationStrategy
      Parameters:
      bd - the bean definition
      beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.
      owner - the owning BeanFactory
      ctor - the constructor to use
      args - the constructor arguments to apply
      Returns:
      a bean instance for this bean definition

    • instantiateWithMethodInjection

      protected Object instantiateWithMethodInjection(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner, @Nullable Constructor<?> ctor, Object... args)
      Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition. Instantiation should use the given constructor and parameters.

    • instantiate

      public Object instantiate(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner, @Nullable Object factoryBean, Method factoryMethod, @Nullable Object... args)
      Description copied from interface: InstantiationStrategy
      Return an instance of the bean with the given name in this factory, creating it via the given factory method.
      Specified by:
      instantiate in interface InstantiationStrategy
      Parameters:
      bd - the bean definition
      beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.
      owner - the owning BeanFactory
      factoryBean - the factory bean instance to call the factory method on, or null in case of a static factory method
      factoryMethod - the factory method to use
      args - the factory method arguments to apply
      Returns:
      a bean instance for this bean definition