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public interface DdeServiceEventHandler
The interface for processing DDE service events.
Method Summary | |
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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. |
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 |
serviceUnregister(java.lang.String service,
java.lang.String instanceName)
Occurs when a service is unregistered. |
Method Detail |
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byte[] adviseRequest(java.lang.String topic, DdeItem item)
topic
- is the name of the topic.item
- specifies the item name and data format.
null
if the service is unable to process the request.boolean adviseStart(java.lang.String topic, DdeItem item)
topic
- is the name of the topic.item
- specifies the item name and data format.
true
to allow the client to start the advise loop, or false
otherwise.void adviseStop(java.lang.String topic, DdeItem item)
topic
- is the name of the topic.item
- specifies the item name.DdeResponse execute(java.lang.String topic, java.lang.String command)
topic
- is the name of the topic.command
- is the command to be executed.
boolean beforeConnect(java.lang.String topic, boolean sameApplication)
topic
- is the name of the topic.sameApplication
- specifies if the client and the service are the same application.
true
to allow the client to connect, or false
otherwise.DdeResponse pokeData(java.lang.String topic, DdeItem item, byte[] data)
topic
- is the name of the topic.item
- specifies the item name and data format.data
- is the sent data.
byte[] requestData(java.lang.String topic, DdeItem item)
topic
- is the name of the topic.item
- specifies the item name and data format.
null
if the service is unable to process the request.void disconnect(boolean sameApplication)
sameApplication
- specifies if the client and the service are the same application.void serviceRegister(java.lang.String service, java.lang.String instanceName)
service
- is the basic name of the service.instanceName
- is an instance-specific service name.void serviceUnregister(java.lang.String service, java.lang.String instanceName)
service
- is the basic name of the service.instanceName
- is an instance-specific service name.
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