TransactionQueueListener

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com.go.trove.util.tq
Interface TransactionQueueListener

All Superinterfaces:: java.util.EventListener

All Known Implementing Classes:: TransactionQueueAdapter

public interface TransactionQueueListener
extends java.util.EventListener

Interface used to receive events from a TransactionQueue.

Version:: 9 , 9/25/00

Method Summary

void transactionDequeued(TransactionQueueEvent e)
          Called when the transaction is dequeued and ready to be serviced.

void transactionEnqueued(TransactionQueueEvent e)
          Called when the transaction is successfully enqueued.

void transactionException(TransactionQueueEvent e)
          Called if an exception was thrown while trying to service the transaction.

void transactionExpired(TransactionQueueEvent e)
          Called if a transaction couldn't be serviced because it expired.

void transactionQueueFull(TransactionQueueEvent e)
          Called if the transaction couldn't be enqueued because the queue is full.

void transactionServiced(TransactionQueueEvent e)
          Called after the transaction has been serviced, unless an exception was thrown while trying to service the transaction.

Method Detail

transactionQueueFull

public void transactionQueueFull(TransactionQueueEvent e)

Called if the transaction couldn't be enqueued because the queue is full. The transaction is not cancelled.

The stage duration value in the event is zero.

transactionEnqueued

public void transactionEnqueued(TransactionQueueEvent e)

Called when the transaction is successfully enqueued.

The stage duration value in the event is zero.

transactionDequeued

public void transactionDequeued(TransactionQueueEvent e)

Called when the transaction is dequeued and ready to be serviced.

The stage duration value in the event represents the amount of time the transaction was queued.

transactionServiced

public void transactionServiced(TransactionQueueEvent e)

Called after the transaction has been serviced, unless an exception was thrown while trying to service the transaction.

The stage duration value in the event represents the amount of time the transaction took to service.

transactionExpired

public void transactionExpired(TransactionQueueEvent e)

Called if a transaction couldn't be serviced because it expired. The transaction is cancelled.

The stage duration value in the event represents the age of the expired transaction.

transactionException

public void transactionException(TransactionQueueEvent e)

Called if an exception was thrown while trying to service the transaction. The transaction is cancelled.

The stage duration value in the event represents the amount of time that passed servicing the transaction before an exception was thrown and after the transaction is cancelled.