javax.websocket.ClientEndpoint Maven / Gradle / Ivy
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package javax.websocket;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* The ClientEndpoint annotation a class level annotation is used to denote that a POJO
* is a web socket client and can be deployed as such. Similar to
* {@link javax.websocket.server.ServerEndpoint}, POJOs that are
* annotated with this annotation can have methods that, using the web socket method level annotations,
* are web socket lifecycle methods.
*
* For example:
*
* @ClientEndpoint(subprotocols="chat")
* public class HelloServer {
*
* @OnMessage
* public void processMessageFromServer(String message, Session session) {
* System.out.println("Message came from the server ! " + message);
* }
*
* }
*
*
* @author dannycoward
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface ClientEndpoint {
/**
* The names of the subprotocols this client supports.
*
* @return the array of names of the subprotocols.
*/
String[] subprotocols() default {};
/**
* The array of Java classes that are to act as Decoders for messages coming into
* the client.
*
* @return the array of decoders.
*/
Class[] decoders() default {};
/**
* The array of Java classes that are to act as Encoders for messages sent by the client.
*
* @return the array of decoders.
*/
Class[] encoders() default {};
/**
* An optional custom configurator class that the developer would like to use
* to provide custom configuration of new instances of this endpoint. The implementation
* creates a new instance of the configurator per logical endpoint.
*
* @return the custom configurator class, or ClientEndpointConfigurator.class
* if none was provided in the annotation.
*/
public Class configurator() default ClientEndpointConfig.Configurator.class;
}