/**
* A BeanDefinition describes a bean instance, which has property values,
* constructor argument values, and further information supplied by
* concrete implementations.
*BeanDefinition（bean的定义）描述了bean的实例，它具有属性值，构造函数，等等。。。*/
public interface BeanDefinition extends AttributeAccessor, BeanMetadataElement {
/**
* Scope identifier for the standard singleton scope: "singleton".
* <p>Note that extended bean factories might support further scopes.
标准单例范围的范围表示符是：singleton，意思就是单例模式的意思*/
String SCOPE_SINGLETON = ConfigurableBeanFactory.SCOPE_SINGLETON;
/**
* Scope identifier for the standard prototype scope: "prototype".
* <p>Note that extended bean factories might support further scopes.
原型模式
*/
String SCOPE_PROTOTYPE = ConfigurableBeanFactory.SCOPE_PROTOTYPE;
/**
* Role hint indicating that a {@code BeanDefinition} is a major part
* of the application. Typically corresponds to a user-defined bean.
角色提示表明BeanDefinition是主要部门
*/
int ROLE_APPLICATION = 0;
/**
* Role hint indicating that a {@code BeanDefinition} is a supporting
* part of some larger configuration, typically an outer
角色提示证明BeanDefinition是一个支持一些较大配置的一部分。通常是外部配置*/
int ROLE_SUPPORT = 1;
/**
* Role hint indicating that a {@code BeanDefinition} is providing an
* entirely background role and has no relevance to the end-user. This hint is
* used when registering beans that are completely part of the internal workings
* of a {@link org.springframework.beans.factory.parsing.ComponentDefinition}.
注册Bean的时候内部工作使用
*/
int ROLE_INFRASTRUCTURE = 2;
// Modifiable attributes
/**
* Set the name of the parent definition of this bean definition, if any.
如果有的话，设置此bean的父定义的名称
*/
void setParentName(String parentName);
/**
* Return the name of the parent definition of this bean definition, if any.
如果有的话，返回此bean定义的父定义的名称
*/
String getParentName();
/**
* Specify the bean class name of this bean definition.
* <p>The class name can be modified during bean factory post-processing,
* typically replacing the original class name with a parsed variant of it.
设置Bean的类全名*/
void setBeanClassName(String beanClassName);
/**
* Return the current bean class name of this bean definition.
* <p>Note that this does not have to be the actual class name used at runtime, in
* case of a child definition overriding/inheriting the class name from its parent.
* Also, this may just be the class that a factory method is called on, or it may
* even be empty in case of a factory bean reference that a method is called on.
* Hence, do <i>not</i> consider this to be the definitive bean type at runtime but
* rather only use it for parsing purposes at the individual bean definition level.
返回此bean的类全名。注意，这不一定是运行时使用的实际类全名*/
String getBeanClassName();
/**
* Override the target scope of this bean, specifying a new scope name.
覆盖此bean的目标返回，指定新的范围名称*/
void setScope(String scope);
/**
* Return the name of the current target scope for this bean,
返回此bean的当前目标范围的名称*/
String getScope();
/**
* Set whether this bean should be lazily initialized.
* <p>If {@code false}, the bean will get instantiated on startup by bean
* factories that perform eager initialization of singletons.
设置是否应该懒加载此bean
*/
void setLazyInit(boolean lazyInit);
/**
* Return whether this bean should be lazily initialized, i.e. not
* eagerly instantiated on startup. Only applicable to a singleton bean.
返回是否应该懒加载此bean，即不是在启动时立马执行实例化。仅适用于单例bean
*/
boolean isLazyInit();
/**
* Set the names of the beans that this bean depends on being initialized.
* The bean factory will guarantee that these beans get initialized first.
设置此bean依赖于初始化的bean的名称
bean工厂将保证首先初始化这些bean
*/
void setDependsOn(String... dependsOn);
/**
* Return the bean names that this bean depends on.
返回此bean所依赖的bean名称
*/
String[] getDependsOn();
/**
* Set whether this bean is a candidate for getting autowired into some other bean.
* <p>Note that this flag is designed to only affect type-based autowiring.
* It does not affect explicit references by name, which will get resolved even
* if the specified bean is not marked as an autowire candidate. As a consequence,
* autowiring by name will nevertheless inject a bean if the name matches.
设置此bean是否可以自动连接到其它bean
请注意，此标志仅用于影响基于类型的自动装配
它不会影响名称的显式引用，甚至可以解析
如果指定的bean未标记为autowire候选者，作为结果
如果名称匹配，按名称自动装配将注入一个bean
*/
void setAutowireCandidate(boolean autowireCandidate);
/**
* Return whether this bean is a candidate for getting autowired into some other bean.
返回此bean是否可以自动连接到其它Bean中
*/
boolean isAutowireCandidate();
/**
* Set whether this bean is a primary autowire candidate.
* <p>If this value is {@code true} for exactly one bean among multiple
* matching candidates, it will serve as a tie-breaker.
设置此bean是否为主要的autowire候选者
*/
void setPrimary(boolean primary);
/**
* Return whether this bean is a primary autowire candidate.
返回此bean是否是主要的autowire候选者
*/
boolean isPrimary();
/**
* Specify the factory bean to use, if any.
* This the name of the bean to call the specified factory method on.
* @see #setFactoryMethodName
指定要使用的工厂bean，这是调用指定工厂方法的bean的名称
*/
void setFactoryBeanName(String factoryBeanName);
/**
* Return the factory bean name, if any.
如果有的话，返回bean工厂的名称
*/
String getFactoryBeanName();
/**
* Specify a factory method, if any. This method will be invoked with
* constructor arguments, or with no arguments if none are specified.
* The method will be invoked on the specified factory bean, if any,
* or otherwise as a static method on the local bean class.
如果有的话，设置指定工厂方法，将使用此方法调用此方法构造函数参数，如果没有指定，
则不带参数。将在指定的工厂bean上调用该方法。如果有的话，或者作为本地bean类的
静态方法
*/
void setFactoryMethodName(String factoryMethodName);
/**
* Return a factory method, if any.
如果有的话，返回工厂方法
*/
String getFactoryMethodName();
/**
* Return the constructor argument values for this bean.
* <p>The returned instance can be modified during bean factory post-processing.
* @return the ConstructorArgumentValues object (never {@code null})
返回此bean的构造函数参数值，可以在Bean工厂后期处理修改返回的实例
*/
ConstructorArgumentValues getConstructorArgumentValues();
/**
* Return the property values to be applied to a new instance of the bean.
* <p>The returned instance can be modified during bean factory post-processing.
* @return the MutablePropertyValues object (never {@code null})
返回要应用于bean的新*的属性值
*/
MutablePropertyValues getPropertyValues();
// Read-only attributes
/**
* Return whether this a <b>Singleton</b>, with a single, shared instance
* returned on all calls.
返回是否为单例模式*/
boolean isSingleton();
/**
* Return whether this a <b>Prototype</b>, with an independent instance
* returned for each call.
返回是否为Prototype(原型模式)*/
boolean isPrototype();
/**
* Return whether this bean is "abstract", that is, not meant to be instantiated.
返回此Bean是否为抽象bean，即不是要实例化
*/
boolean isAbstract();
/**
* Get the role hint for this {@code BeanDefinition}. The role hint
* provides the frameworks as well as tools with an indication of
* the role and importance of a particular {@code BeanDefinition}.
获取此BeanDefinition的角色提示，角色提示提供框架以及指示的工具*/
int getRole();
/**
* Return a human-readable description of this bean definition.
返回此bean定义的可读描述
*/
String getDescription();
/**
* Return a description of the resource that this bean definition
* came from (for the purpose of showing context in case of errors).
返回此bean定义的资源的描述
来自（为了在出现错误时显示上下文）
*/
String getResourceDescription();
/**
* Return the originating BeanDefinition, or {@code null} if none.
* Allows for retrieving the decorated bean definition, if any.
* <p>Note that this method returns the immediate originator. Iterate through the
* originator chain to find the original BeanDefinition as defined by the user.
返回原始BeanDefinition，如果没有，则返回Null
*/
BeanDefinition getOriginatingBeanDefinition();
}
