```
public interface Invocation
```
A client request invocation. An invocation is a request that has been prepared and is ready for execution. Invocations provide a generic (command) interface that enables a separation of concerns between the creator and the submitter. In particular, the submitter does not need to know how the invocation was prepared, but only how it should be executed (synchronously or asynchronously) and when.

Author:

Marek Potociar

See Also:

Invocation.Builder

Nested Class Summary

Nested Classes
Modifier and Type Interface and Description

static interface Invocation.Builder
A client request invocation builder.

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Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`Response`	`invoke()` Synchronously invoke the request and receive a response back.
`<T> T`	`invoke(Class<T> responseType)` Synchronously invoke the request and receive a response of the specified type back.
`<T> T`	`invoke(GenericType<T> responseType)` Synchronously invoke the request and receive a response of the specified generic type back.
`Invocation`	`property(String name, Object value)` Set a new property in the context of a request represented by this invocation.
`Future<Response>`	`submit()` Submit the request for an asynchronous invocation and receive a future response back.
`<T> Future<T>`	`submit(Class<T> responseType)` Submit the request for an asynchronous invocation and receive a future response of the specified type back.
`<T> Future<T>`	`submit(GenericType<T> responseType)` Submit the request for an asynchronous invocation and receive a future response of the specified generic type back.
`<T> Future<T>`	`submit(InvocationCallback<T> callback)` Submit the request for an asynchronous invocation and register an `InvocationCallback` to process the future result of the invocation.

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- Method Detail
  - property
```
Invocation property(String name,
                    Object value)
```
    Set a new property in the context of a request represented by this invocation.
    The property is available for a later retrieval via ClientRequestContext.getProperty(String) or InterceptorContext.getProperty(String). If a property with a given name is already set in the request context, the existing value of the property will be updated. Setting a null value into a property effectively removes the property from the request property bag.
    
    Parameters:
    
    name - property name.
    
    value - (new) property value. null value removes the property with the given name.
    
    Returns:
    
    the updated invocation.
    
    See Also:
    
    Invocation.Builder.property(String, Object)
  - invoke
```
Response invoke()
```
    Synchronously invoke the request and receive a response back.
    
    Returns:
    
    response object as a result of the request invocation.
    
    Throws:
    
    ResponseProcessingException - in case processing of a received HTTP response fails (e.g. in a filter or during conversion of the response entity data to an instance of a particular Java type).
    
    ProcessingException - in case the request processing or subsequent I/O operation fails.
  - invoke
```
<T> T invoke(Class<T> responseType)
```
    Synchronously invoke the request and receive a response of the specified type back.
    
    Type Parameters:
    
    T - response type
    
    Parameters:
    
    responseType - Java type the response should be converted into.
    
    Returns:
    
    response object of the specified type as a result of the request invocation.
    
    Throws:
    
    ResponseProcessingException - in case processing of a received HTTP response fails (e.g. in a filter or during conversion of the response entity data to an instance of a particular Java type).
    
    ProcessingException - in case the request processing or subsequent I/O operation fails.
    
    WebApplicationException - in case the response status code of the response returned by the server is not successful.
  - invoke
```
<T> T invoke(GenericType<T> responseType)
```
    Synchronously invoke the request and receive a response of the specified generic type back.
    
    Type Parameters:
    
    T - generic response type
    
    Parameters:
    
    responseType - type literal representing a generic Java type the response should be converted into.
    
    Returns:
    
    response object of the specified generic type as a result of the request invocation.
    
    Throws:
    
    ResponseProcessingException - in case processing of a received HTTP response fails (e.g. in a filter or during conversion of the response entity data to an instance of a particular Java type).
    
    ProcessingException - in case the request processing or subsequent I/O operation fails.
    
    WebApplicationException - in case the response status code of the response returned by the server is not successful.
  - submit
```
Future<Response> submit()
```
    Submit the request for an asynchronous invocation and receive a future response back.
    Note that calling the Future.get() method on the returned Future instance may throw an ExecutionException that wraps a ProcessingException thrown in case of an invocation processing failure. In case a processing of a properly received response fails, the wrapped processing exception will be of ResponseProcessingException type and will contain the Response instance whose processing has failed.
    
    Returns:
    
    future response object as a result of the request invocation.
  - submit
```
<T> Future<T> submit(Class<T> responseType)
```
    Submit the request for an asynchronous invocation and receive a future response of the specified type back.
    Note that calling the Future.get() method on the returned Future instance may throw an ExecutionException that wraps either a ProcessingException thrown in case of an invocation processing failure or a WebApplicationException or one of its subclasses thrown in case the received response status code is not successful and the specified response type is not Response. In case a processing of a properly received response fails, the wrapped processing exception will be of ResponseProcessingException type and will contain the Response instance whose processing has failed.
    
    Type Parameters:
    
    T - response type
    
    Parameters:
    
    responseType - Java type the response should be converted into.
    
    Returns:
    
    future response object of the specified type as a result of the request invocation.
  - submit
```
<T> Future<T> submit(GenericType<T> responseType)
```
    Submit the request for an asynchronous invocation and receive a future response of the specified generic type back.
    Note that calling the Future.get() method on the returned Future instance may throw an ExecutionException that wraps either a ProcessingException thrown in case of an invocation processing failure or a WebApplicationException or one of its subclasses thrown in case the received response status code is not successful and the specified response type is not Response. In case a processing of a properly received response fails, the wrapped processing exception will be of ResponseProcessingException type and will contain the Response instance whose processing has failed.
    
    Type Parameters:
    
    T - generic response type
    
    Parameters:
    
    responseType - type literal representing a generic Java type the response should be converted into.
    
    Returns:
    
    future response object of the specified generic type as a result of the request invocation.
  - submit
```
<T> Future<T> submit(InvocationCallback<T> callback)
```
    Submit the request for an asynchronous invocation and register an InvocationCallback to process the future result of the invocation.
    Note that calling the Future.get() method on the returned Future instance may throw an ExecutionException that wraps either a ProcessingException thrown in case of an invocation processing failure or a WebApplicationException or one of its subclasses thrown in case the received response status code is not successful and the generic type of the supplied response callback is not Response. In case a processing of a properly received response fails, the wrapped processing exception will be of ResponseProcessingException type and will contain the Response instance whose processing has failed.
    
    Type Parameters:
    
    T - response type
    
    Parameters:
    
    callback - invocation callback for asynchronous processing of the request invocation result.
    
    Returns:
    
    future response object of the specified type as a result of the request invocation.

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Document créé le 11/06/2005, dernière modification le 18/08/2025
Source du document imprimé : https://www.gaudry.be/java-api-javaee-rf-javax/ws/rs/client/Invocation.html

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Références

Manuel PHP : https://docs.oracle.com, Invocation (Java(TM) EE 7 Specification APIs)

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Interface Invocation

Nested Class Summary

Method Summary

Method Detail

property

invoke

invoke

invoke

submit

submit

submit

submit

Références