public class DefaultEventManager extends Object implements EventManager
EventManager.| Modifier and Type | Field and Description |
|---|---|
protected List<org.apache.cayenne.event.DefaultEventManager.Dispatch> |
eventQueue |
protected boolean |
singleThread |
protected boolean |
stopped |
protected Map<EventSubject,org.apache.cayenne.event.DispatchQueue> |
subjects |
| Constructor and Description |
|---|
DefaultEventManager()
Creates a multithreaded EventManager using default thread count.
|
DefaultEventManager(int dispatchThreadCount)
Creates an EventManager starting the specified number of threads for multithreaded
dispatching.
|
| Modifier and Type | Method and Description |
|---|---|
void |
addListener(Object listener,
String methodName,
Class<?> eventParameterClass,
EventSubject subject)
Register an
EventListener for events sent by any sender. |
void |
addListener(Object listener,
String methodName,
Class<?> eventParameterClass,
EventSubject subject,
Object sender)
Register an
EventListener for events sent by a specific sender. |
protected void |
addListener(Object listener,
String methodName,
Class<?> eventParameterClass,
EventSubject subject,
Object sender,
boolean blocking) |
void |
addNonBlockingListener(Object listener,
String methodName,
Class<?> eventParameterClass,
EventSubject subject) |
void |
addNonBlockingListener(Object listener,
String methodName,
Class<?> eventParameterClass,
EventSubject subject,
Object sender) |
boolean |
isSingleThreaded()
Returns true if this EventManager is single-threaded.
|
boolean |
isStopped()
Returns true if the EventManager was stopped via
shutdown() method. |
void |
postEvent(EventObject event,
EventSubject subject)
Sends an event to all registered objects about a particular subject.
|
void |
postNonBlockingEvent(EventObject event,
EventSubject subject)
Sends an event to all registered objects about a particular subject.
|
boolean |
removeAllListeners(EventSubject subject)
Removes all listeners for a given subject.
|
boolean |
removeListener(Object listener)
Unregister the specified listener from all event subjects handled by this manager
instance.
|
boolean |
removeListener(Object listener,
EventSubject subject)
Unregister the specified listener for the events about the given subject.
|
boolean |
removeListener(Object listener,
EventSubject subject,
Object sender)
Unregister the specified listener for the events about the given subject and the
given sender.
|
void |
shutdown()
Stops event threads.
|
protected Map<EventSubject,org.apache.cayenne.event.DispatchQueue> subjects
protected List<org.apache.cayenne.event.DefaultEventManager.Dispatch> eventQueue
protected boolean singleThread
protected volatile boolean stopped
public DefaultEventManager()
public DefaultEventManager(int dispatchThreadCount)
public boolean isStopped()
shutdown() method.public boolean isSingleThreaded()
isSingleThreaded in interface EventManager@BeforeScopeEnd public void shutdown()
public void addListener(Object listener, String methodName, Class<?> eventParameterClass, EventSubject subject)
EventListener for events sent by any sender.addListener in interface EventManagerRuntimeException - if methodName is not foundaddListener(Object, String, Class, EventSubject, Object)public void addNonBlockingListener(Object listener, String methodName, Class<?> eventParameterClass, EventSubject subject)
addNonBlockingListener in interface EventManagerpublic void addListener(Object listener, String methodName, Class<?> eventParameterClass, EventSubject subject, Object sender)
EventListener for events sent by a specific sender.addListener in interface EventManagerlistener - the object to be notified about eventsmethodName - the name of the listener method to be invokedeventParameterClass - the class of the single event argument passed to
methodNamesubject - the event subject that the listener is interested insender - the object whose events the listener is interested in;
null means 'any sender'.RuntimeException - if methodName is not foundpublic void addNonBlockingListener(Object listener, String methodName, Class<?> eventParameterClass, EventSubject subject, Object sender)
addNonBlockingListener in interface EventManagerprotected void addListener(Object listener, String methodName, Class<?> eventParameterClass, EventSubject subject, Object sender, boolean blocking)
public boolean removeListener(Object listener)
removeListener in interface EventManagerlistener - the object to be unregisteredtrue if listener could be removed for any
existing subjects, else returns false.public boolean removeAllListeners(EventSubject subject)
removeAllListeners in interface EventManagerpublic boolean removeListener(Object listener, EventSubject subject)
removeListener in interface EventManagerlistener - the object to be unregisteredsubject - the subject from which the listener is to be unregisteredtrue if listener could be removed for the given
subject, else returns false.public boolean removeListener(Object listener, EventSubject subject, Object sender)
removeListener in interface EventManagerlistener - the object to be unregisteredsubject - the subject from which the listener is to be unregisteredsender - the object whose events the listener was interested in;
null means 'any sender'.true if listener could be removed for the given
subject, else returns false.public void postEvent(EventObject event, EventSubject subject)
postEvent in interface EventManagerevent - the event to be posted to the observerssubject - the subject about which observers will be notifiedIllegalArgumentException - if event or subject are nullpublic void postNonBlockingEvent(EventObject event, EventSubject subject)
postNonBlockingEvent in interface EventManagerevent - the event to be posted to the observerssubject - the subject about which observers will be notifiedIllegalArgumentException - if event or subject are nullCopyright © 2001–2023 Apache Cayenne. All rights reserved.