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java.lang.Objectorg.apache.cayenne.event.DefaultEventManager
public class DefaultEventManager
A default implementation of EventManager.
| Field Summary | |
|---|---|
protected java.util.List<org.apache.cayenne.event.DefaultEventManager.Dispatch> |
eventQueue
|
protected boolean |
singleThread
|
protected boolean |
stopped
|
protected java.util.Map<EventSubject,org.apache.cayenne.event.DispatchQueue> |
subjects
|
| Constructor Summary | |
|---|---|
DefaultEventManager()
Creates a multithreaded EventManager using default thread count. |
|
DefaultEventManager(int dispatchThreadCount)
Creates an EventManager starting the specified number of threads for multithreaded dispatching. |
|
| Method Summary | |
|---|---|
void |
addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject)
Register an EventListener for events sent by any sender. |
void |
addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.Object sender)
Register an EventListener for events sent by a specific sender. |
protected void |
addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.Object sender,
boolean blocking)
|
void |
addNonBlockingListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject)
|
void |
addNonBlockingListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.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(java.util.EventObject event,
EventSubject subject)
Sends an event to all registered objects about a particular subject. |
void |
postNonBlockingEvent(java.util.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(java.lang.Object listener)
Unregister the specified listener from all event subjects handled by this manager instance. |
boolean |
removeListener(java.lang.Object listener,
EventSubject subject)
Unregister the specified listener for the events about the given subject. |
boolean |
removeListener(java.lang.Object listener,
EventSubject subject,
java.lang.Object sender)
Unregister the specified listener for the events about the given subject and the given sender. |
void |
shutdown()
Stops event threads. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected java.util.Map<EventSubject,org.apache.cayenne.event.DispatchQueue> subjects
protected java.util.List<org.apache.cayenne.event.DefaultEventManager.Dispatch> eventQueue
protected boolean singleThread
protected volatile boolean stopped
| Constructor Detail |
|---|
public DefaultEventManager()
public DefaultEventManager(int dispatchThreadCount)
| Method Detail |
|---|
public boolean isStopped()
shutdown() method.
public boolean isSingleThreaded()
isSingleThreaded in interface EventManager@BeforeScopeEnd public void shutdown()
public void addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject)
EventListener for events sent by any sender.
addListener in interface EventManagerjava.lang.RuntimeException - if methodName is not foundaddListener(Object, String, Class, EventSubject, Object)
public void addNonBlockingListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject)
addNonBlockingListener in interface EventManager
public void addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.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'.
java.lang.RuntimeException - if methodName is not found
public void addNonBlockingListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.Object sender)
addNonBlockingListener in interface EventManager
protected void addListener(java.lang.Object listener,
java.lang.String methodName,
java.lang.Class<?> eventParameterClass,
EventSubject subject,
java.lang.Object sender,
boolean blocking)
public boolean removeListener(java.lang.Object listener)
removeListener in interface EventManagerlistener - the object to be unregistered
true if listener could be removed for any
existing subjects, else returns false.public boolean removeAllListeners(EventSubject subject)
removeAllListeners in interface EventManager
public boolean removeListener(java.lang.Object listener,
EventSubject subject)
removeListener in interface EventManagerlistener - the object to be unregisteredsubject - the subject from which the listener is to be unregistered
true if listener could be removed for the given
subject, else returns false.
public boolean removeListener(java.lang.Object listener,
EventSubject subject,
java.lang.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(java.util.EventObject event,
EventSubject subject)
postEvent in interface EventManagerevent - the event to be posted to the observerssubject - the subject about which observers will be notified
java.lang.IllegalArgumentException - if event or subject are null
public void postNonBlockingEvent(java.util.EventObject event,
EventSubject subject)
postNonBlockingEvent in interface EventManagerevent - the event to be posted to the observerssubject - the subject about which observers will be notified
java.lang.IllegalArgumentException - if event or subject are null
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