de.taimos.dvalin.jaxrs.websocket

Class ServerJSONWebSocketAdapter<T>

java.lang.Object

org.eclipse.jetty.websocket.api.WebSocketAdapter

de.taimos.dvalin.jaxrs.websocket.ServerJSONWebSocketAdapter<T>

Type Parameters:

T -

All Implemented Interfaces:

org.eclipse.jetty.websocket.api.WebSocketListener

public abstract class ServerJSONWebSocketAdapter<T>
extends org.eclipse.jetty.websocket.api.WebSocketAdapter

Adapter for server-side websocket sessions using JSON transport

Author:

thoeger

Constructor Summary

Constructors

Constructor and Description
ServerJSONWebSocketAdapter()

Method Summary

Modifier and Type	Method and Description
protected <C> C	convert(Object object, Class<C> targetClass) convert object into another class using the JSON mapper
protected abstract Class<T>	getObjectType()
protected void	onWebSocketEmptyMessage() called if received message was null or empty
protected void	onWebSocketInvalidMessage(String message) called if message was invalid and not parsable into the given type
protected abstract void	onWebSocketObject(T message) called on incoming messages that were parsed into the given object class
void	onWebSocketText(String message)
protected void	sendObjectToSocket(Object objectToSend) send object to client and serialize it using JSON uses a generic callback that prints errors to the log
protected void	sendObjectToSocket(Object objectToSend, org.eclipse.jetty.websocket.api.WriteCallback cb) send object to client and serialize it using JSON

Methods inherited from class org.eclipse.jetty.websocket.api.WebSocketAdapter

getRemote, getSession, isConnected, isNotConnected, onWebSocketBinary, onWebSocketClose, onWebSocketConnect, onWebSocketError

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ServerJSONWebSocketAdapter

public ServerJSONWebSocketAdapter()

Method Detail

onWebSocketText

public final void onWebSocketText(String message)

Specified by:

onWebSocketText in interface org.eclipse.jetty.websocket.api.WebSocketListener

Overrides:

onWebSocketText in class org.eclipse.jetty.websocket.api.WebSocketAdapter

onWebSocketEmptyMessage

protected void onWebSocketEmptyMessage()

called if received message was null or empty

onWebSocketInvalidMessage

protected void onWebSocketInvalidMessage(String message)

called if message was invalid and not parsable into the given type

Parameters:

message - the raw message received on the socket

getObjectType

protected abstract Class<T> getObjectType()

Returns:

the object type for incoming messages

onWebSocketObject

protected abstract void onWebSocketObject(T message)

called on incoming messages that were parsed into the given object class

Parameters:

message - the parsed an converted message

convert

protected <C> C convert(Object object,
                        Class<C> targetClass)

convert object into another class using the JSON mapper

Type Parameters:

C - the generic target type

Parameters:

object - the object to convert

targetClass - the class of the target object

Returns:

the converted object

Throws:

IllegalArgumentException - if conversion fails

sendObjectToSocket

protected final void sendObjectToSocket(Object objectToSend)

send object to client and serialize it using JSON
uses a generic callback that prints errors to the log

Parameters:

objectToSend - the object to send

sendObjectToSocket

protected final void sendObjectToSocket(Object objectToSend,
                                        org.eclipse.jetty.websocket.api.WriteCallback cb)

send object to client and serialize it using JSON

Parameters:

objectToSend - the object to send

cb - the callback after sending the message