Result (Apache Dubbo 2.7.14 API)

所有超级接口:

Serializable

所有已知实现类:

AppResponse, AsyncRpcResult
```
public interface Result
extends Serializable
```
(API, Prototype, NonThreadSafe) An RPC Result. Known implementations are: 1. AsyncRpcResult, it's a CompletionStage whose underlying value signifies the return value of an RPC call. 2. AppResponse, it inevitably inherits CompletionStage and Future, but you should never treat AppResponse as a type of Future, instead, it is a normal concrete type.

另请参阅:

Invoker.invoke(Invocation), AppResponse

方法概要

所有方法实例方法抽象方法
限定符和类型	方法和说明
`void`	`addAttachments(Map<String,String> map)` Add the specified map to existing attachments in this instance.
`void`	`addObjectAttachments(Map<String,Object> map)` Add the specified map to existing attachments in this instance.
`Result`	`get()`
`Result`	`get(long timeout, TimeUnit unit)`
`String`	`getAttachment(String key)` get attachment by key.
`String`	`getAttachment(String key, String defaultValue)` get attachment by key with default value.
`Map<String,String>`	`getAttachments()` get attachments.
`Throwable`	`getException()` Get exception.
`Object`	`getObjectAttachment(String key)` get attachment by key.
`Object`	`getObjectAttachment(String key, Object defaultValue)` get attachment by key with default value.
`Map<String,Object>`	`getObjectAttachments()` get attachments.
`Object`	`getValue()` Get invoke result.
`boolean`	`hasException()` Has exception.
`Object`	`recreate()` Recreate.
`void`	`setAttachment(String key, Object value)`
`void`	`setAttachment(String key, String value)`
`void`	`setAttachments(Map<String,String> map)` Replace the existing attachments with the specified param.
`void`	`setException(Throwable t)`
`void`	`setObjectAttachment(String key, Object value)`
`void`	`setObjectAttachments(Map<String,Object> map)` Replace the existing attachments with the specified param.
`void`	`setValue(Object value)`
`<U> CompletableFuture<U>`	`thenApply(Function<Result,? extends U> fn)`
`Result`	`whenCompleteWithContext(BiConsumer<Result,Throwable> fn)` Add a callback which can be triggered when the RPC call finishes.

- 方法详细资料
  - getValue
```
Object getValue()
```
    Get invoke result.
    
    返回:
    
    result. if no result return null.
  - setValue
```
void setValue(Object value)
```
  - getException
```
Throwable getException()
```
    Get exception.
    
    返回:
    
    exception. if no exception return null.
  - setException
```
void setException(Throwable t)
```
  - hasException
```
boolean hasException()
```
    Has exception.
    
    返回:
    
    has exception.
  - recreate
```
Object recreate()
         throws Throwable
```
    Recreate.
    if (hasException()) { throw getException(); } else { return getValue(); }
    
    返回:
    
    result.
    
    抛出:
    
    if - has exception throw it.
    
    Throwable
  - getAttachments
```
Map<String,String> getAttachments()
```
    get attachments.
    
    返回:
    
    attachments.
  - getObjectAttachments
```
Map<String,Object> getObjectAttachments()
```
    get attachments.
    
    返回:
    
    attachments.
  - addAttachments
```
void addAttachments(Map<String,String> map)
```
    Add the specified map to existing attachments in this instance.
    
    参数:
    
    map -
  - addObjectAttachments
```
void addObjectAttachments(Map<String,Object> map)
```
    Add the specified map to existing attachments in this instance.
    
    参数:
    
    map -
  - setAttachments
```
void setAttachments(Map<String,String> map)
```
    Replace the existing attachments with the specified param.
    
    参数:
    
    map -
  - setObjectAttachments
```
void setObjectAttachments(Map<String,Object> map)
```
    Replace the existing attachments with the specified param.
    
    参数:
    
    map -
  - getAttachment
```
String getAttachment(String key)
```
    get attachment by key.
    
    返回:
    
    attachment value.
  - getObjectAttachment
```
Object getObjectAttachment(String key)
```
    get attachment by key.
    
    返回:
    
    attachment value.
  - getAttachment
```
String getAttachment(String key,
                     String defaultValue)
```
    get attachment by key with default value.
    
    返回:
    
    attachment value.
  - getObjectAttachment
```
Object getObjectAttachment(String key,
                           Object defaultValue)
```
    get attachment by key with default value.
    
    返回:
    
    attachment value.
  - setAttachment
```
void setAttachment(String key,
                   String value)
```
  - setAttachment
```
void setAttachment(String key,
                   Object value)
```
  - setObjectAttachment
```
void setObjectAttachment(String key,
                         Object value)
```
  - whenCompleteWithContext
```
Result whenCompleteWithContext(BiConsumer<Result,Throwable> fn)
```
    Add a callback which can be triggered when the RPC call finishes.
    Just as the method name implies, this method will guarantee the callback being triggered under the same context as when the call was started, see implementation in whenCompleteWithContext(BiConsumer)
    
    参数:
    
    fn -
    
    返回:
  - thenApply
```
<U> CompletableFuture<U> thenApply(Function<Result,? extends U> fn)
```
  - get
```
Result get()
    throws InterruptedException,
           ExecutionException
```
    抛出:
    
    InterruptedException
    
    ExecutionException
  - get
```
Result get(long timeout,
           TimeUnit unit)
    throws InterruptedException,
           ExecutionException,
           TimeoutException
```
    抛出:
    
    InterruptedException
    
    ExecutionException
    
    TimeoutException

接口 Result

方法概要

方法详细资料

getValue

setValue

getException

setException

hasException

recreate

getAttachments

getObjectAttachments

addAttachments

addObjectAttachments

setAttachments

setObjectAttachments

getAttachment

getObjectAttachment

getAttachment

getObjectAttachment

setAttachment

setAttachment

setObjectAttachment

whenCompleteWithContext

thenApply

get

get