Spring IOC源码分析（二）：Bean工厂体系结构设计

public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFactory
        implements ConfigurableListableBeanFactory, BeanDefinitionRegistry, Serializable {
    
    ...

    /** Map from serialized id to factory instance. */
    private static final Map<String, Reference<DefaultListableBeanFactory>> serializableFactories =
            new ConcurrentHashMap<>(8);

    ...

    /** Map from dependency type to corresponding autowired value. */
    private final Map<Class<?>, Object> resolvableDependencies = new ConcurrentHashMap<>(16);

    /** Map of bean definition objects, keyed by bean name. */
    private final Map<String, BeanDefinition> beanDefinitionMap = new ConcurrentHashMap<>(256);

    /** Map of singleton and non-singleton bean names, keyed by dependency type. */
    private final Map<Class<?>, String[]> allBeanNamesByType = new ConcurrentHashMap<>(64);

    /** Map of singleton-only bean names, keyed by dependency type. */
    private final Map<Class<?>, String[]> singletonBeanNamesByType = new ConcurrentHashMap<>(64);

    /** List of bean definition names, in registration order. */
    private volatile List<String> beanDefinitionNames = new ArrayList<>(256);

    /** List of names of manually registered singletons, in registration order. */
    private volatile Set<String> manualSingletonNames = new LinkedHashSet<>(16);

    /** Cached array of bean definition names in case of frozen configuration. */
    @Nullable
    private volatile String[] frozenBeanDefinitionNames;

    /** Whether bean definition metadata may be cached for all beans. */
    private volatile boolean configurationFrozen = false;
    
    ...
    
}

public class StaticListableBeanFactory implements ListableBeanFactory {

    /** Map from bean name to bean instance. */
    private final Map<String, Object> beans;
    
    ...
    
}