//自动装配的Bean 工厂 public interface AutowireCapableBeanFactory extends BeanFactory { //工厂没有自动装配的Bean int AUTOWIRE_NO = 0; //根据名称自动装配的Bean int AUTOWIRE_BY_NAME = 1; //表明根据类型自动装配 int AUTOWIRE_BY_TYPE = 2; //根据构造方法快速装配的Bean int AUTOWIRE_CONSTRUCTOR = 3; //Bean的class内部来进行装配,Spring 3.0开始被弃用 @Deprecated int AUTOWIRE_AUTODETECT = 4; //------------------------------------------------------------------------- // Typical methods for creating and populating external bean instances //典型的方法来创建和填充外部bean实例 //------------------------------------------------------------------------- /** * Fully create a new bean instance of the given class. * <p>Performs full initialization of the bean, including all applicable * {@link BeanPostProcessor BeanPostProcessors}. * <p>Note: This is intended for creating a fresh instance, populating annotated * fields and methods as well as applying all standard bean initialization callbacks. * It does <i>not</> imply traditional by-name or by-type autowiring of properties; * use {@link #createBean(Class, int, boolean)} for those purposes. * @param beanClass the class of the bean to create * @return the new bean instance * @throws BeansException if instantiation or wiring failed */ //根据bena的类型来创建Bean实例 <T> T createBean(Class<T> beanClass) throws BeansException; /** * Populate the given bean instance through applying after-instantiation callbacks * and bean property post-processing (e.g. for annotation-driven injection). * <p>Note: This is essentially intended for (re-)populating annotated fields and * methods, either for new instances or for deserialized instances. It does * <i>not</i> imply traditional by-name or by-type autowiring of properties; * use {@link #autowireBeanProperties} for those purposes. * @param existingBean the existing bean instance * @throws BeansException if wiring failed */ //给定对象,在后处理bean,进行自动装配 void autowireBean(Object existingBean) throws BeansException; //根据Bean的BeanDefinition,来装配这个未加工的Object Object configureBean(Object existingBean, String beanName) throws BeansException; //------------------------------------------------------------------------- // Specialized methods for fine-grained control over the bean lifecycle //------------------------------------------------------------------------- //传入指定的Bean的类型,指定的装配的策略,是否依赖检查 来创建一个完全新的Bean Object createBean(Class<?> beanClass, int autowireMode, boolean dependencyCheck) throws BeansException; //类似上面 Object autowire(Class<?> beanClass, int autowireMode, boolean dependencyCheck) throws BeansException; //自动装配 void autowireBeanProperties(Object existingBean, int autowireMode, boolean dependencyCheck) throws BeansException; //初始化之前执行BeanPostProcessors void applyBeanPropertyValues(Object existingBean, String beanName) throws BeansException; * <p>Note that no bean definition of the given name has to exist * in the bean factory. The passed-in bean name will simply be used * for callbacks but not checked against the registered bean definitions. * @param existingBean the existing bean instance * @param beanName the name of the bean, to be passed to it if necessary * (only passed to {@link BeanPostProcessor BeanPostProcessors}) * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if the initialization failed */ Object initializeBean(Object existingBean, String beanName) throws BeansException; /** * Apply {@link BeanPostProcessor BeanPostProcessors} to the given existing bean * instance, invoking their {@code postProcessBeforeInitialization} methods. * The returned bean instance may be a wrapper around the original. * @param existingBean the new bean instance * @param beanName the name of the bean * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if any post-processing failed * @see BeanPostProcessor#postProcessBeforeInitialization */ Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName) throws BeansException; /** * Apply {@link BeanPostProcessor BeanPostProcessors} to the given existing bean * instance, invoking their {@code postProcessAfterInitialization} methods. * The returned bean instance may be a wrapper around the original. * @param existingBean the new bean instance * @param beanName the name of the bean * @return the bean instance to use, either the original or a wrapped one * @throws BeansException if any post-processing failed * @see BeanPostProcessor#postProcessAfterInitialization */ Object applyBeanPostProcessorsAfterInitialization(Object existingBean, String beanName) throws BeansException; /** * Destroy the given bean instance (typically coming from {@link #createBean}), * applying the {@link org.springframework.beans.factory.DisposableBean} contract as well as * registered {@link DestructionAwareBeanPostProcessor DestructionAwareBeanPostProcessors}. * <p>Any exception that arises during destruction should be caught * and logged instead of propagated to the caller of this method. * @param existingBean the bean instance to destroy */ //销毁指定的Bean void destroyBean(Object existingBean); //------------------------------------------------------------------------- // Delegate methods for resolving injection points //------------------------------------------------------------------------- // <T> NamedBeanHolder<T> resolveNamedBean(Class<T> requiredType) throws BeansException; //分解指定的依赖 Object resolveDependency(DependencyDescriptor descriptor, String requestingBeanName) throws BeansException; //同上 Object resolveDependency(DependencyDescriptor descriptor, String requestingBeanName, Set<String> autowiredBeanNames, TypeConverter typeConverter) throws BeansException; }
英语翻译之前的都删了,也许有些地方自己理解的不对,可以指正下,
解析下:
1.常量:5个常量,1个是判断是工厂是否自动装配bean,其他常量是对自动装配的策略。其中常量等于4的这个在Spring3.0时候进行抛弃
2.6个自动装配bean的方法,3个和BeanPostProcessors有关的处理,2个指定的分解依赖的方法,1个销毁bean的方法,1个初始化Bean的方法
这个接口其实是扩张 了Bean的自动装配方法和前后处理器BeanPostProcessors
时间: 2024-10-14 20:40:47