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Java Source Code / Java Documentation » Library » Apache beehive 1.0.2 src » org.apache.beehive.controls.api.events

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.apache.beehive.controls.api.events .EventRef

EventRef

public class EventRef implements java.io.Serializable(Code)

The EventRef class represents a reference to a specific Control event. EventRefs can be used to fire external events into a Control, in contexts where the event source may not share the associated EventSet class instance with the event target, or even have access to the EventSet class itself.

It is roughly equivalent to the java.lang.reflect.Method object that refers to a method on an EventSet interface, but has several additional properties:

It is serializable, so can be persisted/restored or passed across the wire
It supports materializing the EventRef back to a Method reference in a way that allows EventRefs to be passed across class loaders
It can be constructed in contexts where a reference to the actual EventSet class might not be available (using a String event descriptor format to describe events)

Constructor Summary
public	EventRef(Method eventMethod) Constructs a new EventRef based upon a Method reference.
public	EventRef(String eventDescriptor) Constructs a new EventRef using an event descriptor string.

Method Summary
public boolean	equals(Object obj)
public String	getEventDescriptor(Class controlInterface) Returns the event descriptor string associated with the EventRef.
public Method	getEventMethod(Class controlInterface) Returns the event Method associated with this EventRef.
public String	toString()

Constructor Detail

EventRef
public EventRef(Method eventMethod)(Code)
	Constructs a new EventRef based upon a Method reference. The input method must be one that is declared within a Control EventSet interface. Parameters: eventMethod - the Method associated with the event

EventRef

public EventRef(String eventDescriptor)(Code)

Constructs a new EventRef using an event descriptor string. The format of this string is:

where eventSet refers to the fully qualified name of the EventSet class, eventName refers to the name of the event Method, and eventDescriptor describes the event argument and return types using the method descriptor format defined in the Java Language Specification.

For example, given the following EventSet interface:

 @ControlInterface
 public interface MyControl
 {
 @EventSet
 public interface MyEvents
 {
 public String myEvent(int arg0, Object arg2);
 }
 }

the eventDescriptor for myEvent would be:

 
 MyControl.MyEvents.myEvent(ILjava/lang/Object;)Ljava/lang/String;

Parameters:
eventDescriptor - the event descriptor string associated with the event

Method Detail

equals
public boolean equals(Object obj)(Code)
	Two EventRefs are equal if the method descriptor string associated with them is equal

getEventDescriptor
public String getEventDescriptor(Class controlInterface)(Code)
	Returns the event descriptor string associated with the EventRef. Parameters: controlInterface - the ControlInterface

getEventMethod
public Method getEventMethod(Class controlInterface)(Code)
	Returns the event Method associated with this EventRef.

toString
public String toString()(Code)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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