com.jniwrapper.win32.dde

Class DdeServiceEventAdapter

java.lang.Object

com.jniwrapper.win32.dde.DdeServiceEventAdapter

All Implemented Interfaces:

DdeServiceEventHandler

public abstract class DdeServiceEventAdapter
extends java.lang.Object
implements DdeServiceEventHandler

An abstract adapter class for processing DDE service events.

Constructor Summary

Constructors

Constructor and Description
DdeServiceEventAdapter()

Method Summary

Modifier and Type	Method and Description
byte[]	adviseRequest(java.lang.String topic, DdeItem item) Occurs when the value of the item has been changed and it is necessary to notify clients.
boolean	adviseStart(java.lang.String topic, DdeItem item) Occurs when a client begins an advise loop.
void	adviseStop(java.lang.String topic, DdeItem item) Occurs when a client stops an advise loop.
boolean	beforeConnect(java.lang.String topic, boolean sameApplication) Occurs when a client attempts to establish connection with the service.
void	disconnect(boolean sameApplication) Occurs on disconnect.
void	disconnect(boolean sameApplication) Occurs on disconnect.
DdeResponse	execute(java.lang.String topic, java.lang.String command) Occurs when a client makes a command execution request.
DdeResponse	pokeData(java.lang.String topic, DdeItem item, byte[] data) Occurs when a client sends data to the service.
byte[]	requestData(java.lang.String topic, DdeItem item) Occurs when a client makes a request for data.
void	serviceRegister(java.lang.String service, java.lang.String instanceName) Occurs when a service is registered.
void	serviceRegister(java.lang.String service, java.lang.String instanceName) Occurs when a service is registered.
void	serviceUnregister(java.lang.String service, java.lang.String instanceName) Occurs when a service is unregistered.
void	serviceUnregister(java.lang.String service, java.lang.String instanceName) Occurs when a service is unregistered.

Methods inherited from class java.lang.Object

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

Constructor Detail

DdeServiceEventAdapter

public DdeServiceEventAdapter()

Method Detail

adviseRequest

public byte[] adviseRequest(java.lang.String topic,
                            DdeItem item)

Description copied from interface: DdeServiceEventHandler

Occurs when the value of the item has been changed and it is necessary to notify clients.

Specified by:

adviseRequest in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

item - specifies the item name and data format.

Returns:

a new value of the item data or null if the service is unable to process the request.

adviseStart

public boolean adviseStart(java.lang.String topic,
                           DdeItem item)

Description copied from interface: DdeServiceEventHandler

Occurs when a client begins an advise loop.

Specified by:

adviseStart in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

item - specifies the item name and data format.

Returns:

true to allow the client to start the advise loop, or false otherwise.

adviseStop

public void adviseStop(java.lang.String topic,
                       DdeItem item)

Description copied from interface: DdeServiceEventHandler

Occurs when a client stops an advise loop.

Specified by:

adviseStop in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

item - specifies the item name.

execute

public DdeResponse execute(java.lang.String topic,
                           java.lang.String command)

Description copied from interface: DdeServiceEventHandler

Occurs when a client makes a command execution request.

Specified by:

execute in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

command - is the command to be executed.

Returns:

the result of the request processing.

beforeConnect

public boolean beforeConnect(java.lang.String topic,
                             boolean sameApplication)

Description copied from interface: DdeServiceEventHandler

Occurs when a client attempts to establish connection with the service.

Specified by:

beforeConnect in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

sameApplication - specifies if the client and the service are the same application.

Returns:

true to allow the client to connect, or false otherwise.

pokeData

public DdeResponse pokeData(java.lang.String topic,
                            DdeItem item,
                            byte[] data)

Description copied from interface: DdeServiceEventHandler

Occurs when a client sends data to the service.

Specified by:

pokeData in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

item - specifies the item name and data format.

data - is the sent data.

Returns:

the result of the event processing.

requestData

public byte[] requestData(java.lang.String topic,
                          DdeItem item)

Description copied from interface: DdeServiceEventHandler

Occurs when a client makes a request for data.

Specified by:

requestData in interface DdeServiceEventHandler

Parameters:

topic - is the name of the topic.

item - specifies the item name and data format.

Returns:

a new value of the item data or null if the service is unable to process the request.

disconnect

public void disconnect(boolean sameApplication)

Occurs on disconnect.

Parameters:

sameApplication - specifies if the client and the service are the same application.

serviceRegister

public void serviceRegister(java.lang.String service,
                            java.lang.String instanceName)

Occurs when a service is registered.

Parameters:

service - is the basic name of the service.

instanceName - is an instance-specific service name.

serviceUnregister

public void serviceUnregister(java.lang.String service,
                              java.lang.String instanceName)

Occurs when a service is unregistered.

Parameters:

service - is the basic name of the service.

instanceName - is an instance-specific service name.

disconnect

public void disconnect(boolean sameApplication)

Occurs on disconnect.

Parameters:

sameApplication - specifies if the client and the service are the same application.

serviceRegister

public void serviceRegister(java.lang.String service,
                            java.lang.String instanceName)

Occurs when a service is registered.

Parameters:

service - is the basic name of the service.

instanceName - is an instance-specific service name.

serviceUnregister

public void serviceUnregister(java.lang.String service,
                              java.lang.String instanceName)

Occurs when a service is unregistered.

Parameters:

service - is the basic name of the service.

instanceName - is an instance-specific service name.