ISCMessageDispatcher (SmartClient Enterprise Server API 12.0p (2025-07-22))

java.lang.Object
- com.isomorphic.messaging.ISCMessageDispatcher

```
public abstract class ISCMessageDispatcher
extends java.lang.Object
```
This is the base local dispatcher - it is an abstract class that provides same-jvm registration management and channel subscriptions. Use it to obtain a concrete message dispatcher class.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`static ISCMessageDispatcher`	`instance()`
`static ISCMessageDispatcher`	`instance(RequestContext context)`
`boolean`	`isSubscribed(ISubscriber subscriber, java.lang.String channel)` Check to see if a given subscriber is subscribed to a given channel.
`void`	`register(ISubscriber subscriber)` register this subscriber
`void`	`send(ISCMessage msg)` send a message
`void`	`subscribe(ISubscriber subscriber, java.lang.String channel)` subscribe a given subscriber to a given channel
`abstract void`	`subscribe(ISubscriber subscriber, java.lang.String channel, java.lang.String selector)` subscribe a given subscriber to a given channel
`void`	`unregister(ISubscriber subscriber)` unregister this subscriber
`abstract void`	`unsubscribe(ISubscriber subscriber, java.lang.String channel)` unsubscribe a given subscriber from a given channel

Method Detail

instance
```
public static ISCMessageDispatcher instance()
                                     throws java.lang.Exception
```
Returns:

concrete ISCMessageDispatcher class for sending/receiving Realtime Messages.

Throws:

java.lang.Exception

instance
```
public static ISCMessageDispatcher instance(RequestContext context)
                                     throws java.lang.Exception
```
Parameters:

context -

Returns:

concrete ISCMessageDispatcher class capable of delivering responses to web browsers

Throws:

java.lang.Exception

register

public void register(ISubscriber subscriber)
              throws java.lang.Exception

Parameters:: subscriber -
Throws:: java.lang.Exception

unregister

public void unregister(ISubscriber subscriber)
                throws java.lang.Exception

unregister this subscriber

Parameters:: subscriber -
Throws:: java.lang.Exception

public void subscribe(ISubscriber subscriber,
                      java.lang.String channel)
               throws java.lang.Exception

subscribe a given subscriber to a given channel

Parameters:: subscriber -; channel -
Throws:: java.lang.Exception

public abstract void subscribe(ISubscriber subscriber,
                               java.lang.String channel,
                               java.lang.String selector)
                        throws java.lang.Exception

subscribe a given subscriber to a given channel

Parameters:: subscriber -; channel -; selector -
Throws:: java.lang.Exception

unsubscribe

public abstract void unsubscribe(ISubscriber subscriber,
                                 java.lang.String channel)
                          throws java.lang.Exception

unsubscribe a given subscriber from a given channel

Parameters:: subscriber -; channel -
Throws:: java.lang.Exception

send

public void send(ISCMessage msg)
          throws java.lang.Exception

send a message

Parameters:: msg -
Throws:: java.lang.Exception

isSubscribed
```
public boolean isSubscribed(ISubscriber subscriber,
                            java.lang.String channel)
                     throws java.lang.Exception
```
Check to see if a given subscriber is subscribed to a given channel. Note: not applicable to JMS (meaningless in a distributed context)

Parameters:

subscriber -

channel -

Returns:

true if subscribed, false if not

Throws:

java.lang.Exception

Class ISCMessageDispatcher

Method Summary

Method Detail

instance

instance

register

unregister

subscribe

subscribe

unsubscribe

send

isSubscribed