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java.lang.Objectorg.jgroups.util.Promise
Allows a thread to submit an asynchronous request and to wait for the result. The caller may choose to check for the result at a later time, or immediately and it may block or not. Both the caller and responder have to know the promise.
Constructor Summary | |
Promise()
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Method Summary | |
java.lang.Object |
getResult()
|
java.lang.Object |
getResult(long timeout)
Returns the result, but never throws a TimeoutException; returns null instead. |
java.lang.Object |
getResultWithTimeout(long timeout)
Blocks until a result is available, or timeout milliseconds have elapsed |
boolean |
hasResult()
Checks whether result is available. |
void |
reset()
Causes all waiting threads to return |
void |
setResult(java.lang.Object obj)
Sets the result and notifies any threads waiting for it |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public Promise()
Method Detail |
public java.lang.Object getResultWithTimeout(long timeout) throws TimeoutException
timeout
-
TimeoutException.
- If a timeout occurred (implies that timeout > 0)
TimeoutException
public java.lang.Object getResult()
public java.lang.Object getResult(long timeout)
timeout
-
public boolean hasResult()
public void setResult(java.lang.Object obj)
public void reset()
public java.lang.String toString()
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