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package javax.xml.ws;

 
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. 
Type parameters:
<T> – The type of the request
 @since 1.6, JAX-WS 2.0
 @see javax.xml.transform.Source
 @see javax.xml.soap.SOAPMessage
 @see javax.xml.ws.ServiceMode/**
 *  <p>Service endpoints may implement the {@code Provider}
 *  interface as a dynamic alternative to an SEI.
 *
 *  <p>Implementations are required to support {@code Provider<Source>},
 *  {@code Provider<SOAPMessage>} and
 *  {@code Provider<DataSource>}, depending on the binding
 *  in use and the service mode.
 *
 *  <p>The {@code ServiceMode} annotation can be used to control whether
 *  the {@code Provider} instance will receive entire protocol messages
 *  or just message payloads.
 *
 * @param <T> The type of the request
 *  @since 1.6, JAX-WS 2.0
 *
 *  @see javax.xml.transform.Source
 *  @see javax.xml.soap.SOAPMessage
 *  @see javax.xml.ws.ServiceMode
**/
public interface Provider<T> {

  
Invokes an operation according to the contents of the request message. @param request The request message or message payload. @return 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 javax.xml.ws.handler.MessageContext @see javax.xml.ws.ProtocolException /** Invokes an operation according to the contents of the request
   *  message.
   *
   *  @param  request The request message or message payload.
   *  @return The response message or message payload. May be {@code null} if
              there is no response.
   *  @throws WebServiceException If there is an error processing request.
   *          The cause of the {@code WebServiceException} may be set to a subclass
   *          of {@code ProtocolException} to control the protocol level
   *          representation of the exception.
   *  @see javax.xml.ws.handler.MessageContext
   *  @see javax.xml.ws.ProtocolException
  **/
  public T invoke(T request);
}