Package jakarta.websocket

Interface Encoder

All Known Subinterfaces:
Encoder.Binary<T>, Encoder.BinaryStream<T>, Encoder.Text<T>, Encoder.TextStream<T>
public interface Encoder
The Encoder interface defines how developers can provide a way to convert their custom objects into web socket messages. The Encoder interface contains subinterfaces that allow encoding algorithms to encode custom objects to: text, binary data, character stream and write to an output stream. The websocket implementation creates a new instance of the encoder per endpoint instance per connection. This means that each encoder instance has at most one calling thread at a time. The lifecycle of the Encoder instance is governed by the container calls to the init(jakarta.websocket.EndpointConfig) and destroy() methods.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static interface 
    Encoder.Binary<T>
    This interface defines how to provide a way to convert a custom object into a binary message.
    static interface 
    Encoder.BinaryStream<T>
    This interface may be implemented by encoding algorithms that want to write the encoded object to a binary stream.
    static interface 
    Encoder.Text<T>
    This interface defines how to provide a way to convert a custom object into a text message.
    static interface 
    Encoder.TextStream<T>
    This interface may be implemented by encoding algorithms that want to write the encoded object to a character stream.

  • Method Summary

    Modifier and Type
    Method
    Description
    default void
    destroy()
    This method is called when the encoder is about to be removed from service in order that any resources the encoder used may be closed gracefully.
    default void
    init(EndpointConfig config)
    This method is called with the endpoint configuration object of the endpoint this encoder is intended for when it is about to be brought into service.

  • Method Details

    • init

      default void init(EndpointConfig config)
      This method is called with the endpoint configuration object of the endpoint this encoder is intended for when it is about to be brought into service.
      Parameters:
      config - the endpoint configuration object when being brought into service

    • destroy

      default void destroy()
      This method is called when the encoder is about to be removed from service in order that any resources the encoder used may be closed gracefully.