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## javax.xml.ws
Interface Provider<T>

    public interface Provider<T>

Service endpoints may implement the `Provider` interface as a dynamic alternative to an SEI.

Implementations are required to support `Provider<Source>`, `Provider<SOAPMessage>` and `Provider<DataSource>`, depending on the binding in use and the service mode.

The `ServiceMode` annotation can be used to control whether the `Provider` instance will receive entire protocol messages or just message payloads.

Since:
  JAX-WS 2.0
See Also:
  `Source`, `SOAPMessage`, `ServiceMode`

Method Summary
`T` | `invoke(T request)` Invokes an operation occording to the contents of the request message.

Method Detail

### invoke

    T invoke(T request)

  Invokes an operation occording to the contents of the request message.

  Parameters:
    `request` - The request message or message payload.
  Returns:
    The response message or message payload. May be `null` if there is no response.
  Throws:
    `WebServiceException` - If there is an error processing request. The cause of the `WebServiceException` may be set to a subclass of `ProtocolException` to control the protocol level representation of the exception.
  See Also:
    `MessageContext`, `ProtocolException`

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