程序包 org.springframework.boot.context.properties.bind

类 BindResult<T>

  • 类型参数:
    T - the result type
    public final class BindResult<T>
extends Object
    A container object to return the result of a Binder bind operation. May contain either a successfully bound object or an empty result.
    从以下版本开始:
    2.0.0

    • 方法概要

      所有方法 实例方法 具体方法 
      修饰符和类型方法说明
      booleanequals​(Object obj) 
      Tget()
      Return the object that was bound or throw a NoSuchElementException if no value was bound.
      inthashCode() 
      voidifBound​(Consumer<? super T> consumer)
      Invoke the specified consumer with the bound value, or do nothing if no value has been bound.
      booleanisBound()
      Returns true if a result was bound.
      <U> BindResult<U>map​(Function<? super T,​? extends U> mapper)
      Apply the provided mapping function to the bound value, or return an updated unbound result if no value has been bound.
      TorElse​(T other)
      Return the object that was bound, or other if no value has been bound.
      TorElseCreate​(Class<? extends T> type)
      Return the object that was bound, or a new instance of the specified class if no value has been bound.
      TorElseGet​(Supplier<? extends T> other)
      Return the object that was bound, or the result of invoking other if no value has been bound.
      <X extends Throwable>
      T      		orElseThrow​(Supplier<? extends X> exceptionSupplier)
      Return the object that was bound, or throw an exception to be created by the provided supplier if no value has been bound.

    • 方法详细资料

      • isBound

        public boolean isBound()
        Returns true if a result was bound.
        返回:
        if a result was bound

      • ifBound

        public void ifBound​(Consumer<? super T> consumer)
        Invoke the specified consumer with the bound value, or do nothing if no value has been bound.
        参数:
        consumer - block to execute if a value has been bound

      • map

        public <U> BindResult<U> map​(Function<? super T,​? extends U> mapper)
        Apply the provided mapping function to the bound value, or return an updated unbound result if no value has been bound.
        类型参数:
        U - the type of the result of the mapping function
        参数:
        mapper - a mapping function to apply to the bound value. The mapper will not be invoked if no value has been bound.
        返回:
        an BindResult describing the result of applying a mapping function to the value of this BindResult.

      • orElse

        public T orElse​(T other)
        Return the object that was bound, or other if no value has been bound.
        参数:
        other - the value to be returned if there is no bound value (may be null)
        返回:
        the value, if bound, otherwise other

      • orElseGet

        public T orElseGet​(Supplier<? extends T> other)
        Return the object that was bound, or the result of invoking other if no value has been bound.
        参数:
        other - a Supplier of the value to be returned if there is no bound value
        返回:
        the value, if bound, otherwise the supplied other

      • orElseCreate

        public T orElseCreate​(Class<? extends T> type)
        Return the object that was bound, or a new instance of the specified class if no value has been bound.
        参数:
        type - the type to create if no value was bound
        返回:
        the value, if bound, otherwise a new instance of type

      • orElseThrow

        public <X extends Throwable> T orElseThrow​(Supplier<? extends X> exceptionSupplier)
                                    throws X extends Throwable
        Return the object that was bound, or throw an exception to be created by the provided supplier if no value has been bound.
        类型参数:
        X - the type of the exception to be thrown
        参数:
        exceptionSupplier - the supplier which will return the exception to be thrown
        返回:
        the present value
        抛出:
        X - if there is no value present
        X extends Throwable