org.directwebremoting.impl
Class DefaultCallbackHelper

java.lang.Object
  org.directwebremoting.impl.DefaultCallbackHelper

All Implemented Interfaces:

CallbackHelper

public class DefaultCallbackHelper
extends java.lang.Object
implements CallbackHelper

The default implementation of CallbackHelper

Author:

Joe Walker [joe at getahead dot ltd dot uk]

Field Summary

static java.lang.String	KEY_CALLBACK The key that we use in a script session to store Callbacks
static java.lang.String	KEY_TYPE The key that we use in a script session to store Callbacks

Constructor Summary

DefaultCallbackHelper()

Method Summary

java.lang.String	createUniqueId() Callbacks need a unique ID
static <T> void	executeCallback(java.lang.String key, RealRawData data) The reverse of CallbackHelper.saveCallback(Callback, Class) which executes a Callback which has been called by the browser
<T> java.lang.String	saveCallback(Callback<T> callback, java.lang.Class<T> type) Used by the many proxy classes to record a callback for later calling
void	setIdGenerator(IdGenerator idGenerator) The id generator

Methods inherited from class java.lang.Object

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

Field Detail

KEY_CALLBACK

public static final java.lang.String KEY_CALLBACK

The key that we use in a script session to store Callbacks

See Also:

Constant Field Values

KEY_TYPE

public static final java.lang.String KEY_TYPE

The key that we use in a script session to store Callbacks

See Also:

Constant Field Values

Constructor Detail

DefaultCallbackHelper

public DefaultCallbackHelper()

Method Detail

saveCallback

public <T> java.lang.String saveCallback(Callback<T> callback,
                                         java.lang.Class<T> type)

Description copied from interface: CallbackHelper

Used by the many proxy classes to record a callback for later calling

Specified by:

saveCallback in interface CallbackHelper

Parameters:

callback - The callback that acts on the type

type - The type of the data that we are recording

Returns:

A key under which the data is stored

executeCallback

public static <T> void executeCallback(java.lang.String key,
                                       RealRawData data)
                            throws ConversionException

The reverse of CallbackHelper.saveCallback(Callback, Class) which executes a Callback which has been called by the browser

Throws:

ConversionException

createUniqueId

public java.lang.String createUniqueId()

Callbacks need a unique ID

setIdGenerator

public void setIdGenerator(IdGenerator idGenerator)

The id generator