--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/util/tq/TransactionQueueEvent.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,163 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.util.tq;
+
+import java.util.EventObject;
+import java.util.Date;
+
+/******************************************************************************
+ * An event that contains information from a {@link TransactionQueue}.
+ * TransactionQueueEvents can be received by implementing a
+ * {@link TransactionQueueListener}.
+ *
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:-->  9/25/00 <!-- $-->
+ */
+public class TransactionQueueEvent extends EventObject {
+    private Transaction mTransaction;
+    private Throwable mThrowable;
+    private long mTimestampMillis;
+    private long mStageDuration;
+
+    private transient Date mTimestamp;
+
+    public TransactionQueueEvent(TransactionQueue source, 
+                                 Transaction transaction) {
+        super(source);
+        mTransaction = transaction;
+        mTimestampMillis = System.currentTimeMillis();
+    }
+
+    public TransactionQueueEvent(TransactionQueue source, 
+                                 Transaction transaction,
+                                 Throwable throwable) {
+        super(source);
+        mTransaction = transaction;
+        mThrowable = throwable;
+        mTimestampMillis = System.currentTimeMillis();
+    }
+
+    /**
+     * Copies the given event, but gives it a new timestamp and computes a
+     * stage duration.
+     */
+    public TransactionQueueEvent(TransactionQueueEvent event) {
+        super(event.getSource());
+        mTransaction = event.mTransaction;
+        mThrowable = event.mThrowable;
+        mStageDuration = (mTimestampMillis = System.currentTimeMillis()) -
+            event.mTimestampMillis;
+    }
+
+    /**
+     * Copies the given event, but gives it a different throwable, a new
+     * timestamp and computes a stage duration.
+     */
+    public TransactionQueueEvent(TransactionQueueEvent event,
+                                 Throwable throwable) {
+        super(event.getSource());
+        mTransaction = event.mTransaction;
+        mThrowable = throwable;
+        mStageDuration = (mTimestampMillis = System.currentTimeMillis()) -
+            event.mTimestampMillis;
+    }
+
+    public TransactionQueue getTransactionQueue() {
+        return (TransactionQueue)getSource();
+    }
+
+    /**
+     * Returns the date and time of this event.
+     */
+    public Date getTimestamp() {
+        if (mTimestamp == null) {
+            mTimestamp = new Date(mTimestampMillis);
+        }
+        return mTimestamp;
+    }
+
+    /**
+     * Returns the date and time of this event as milliseconds since 1970.
+     */
+    public long getTimestampMillis() {
+        return mTimestampMillis;
+    }
+
+    /**
+     * Returns the amount of time, in milliseconds, that the transaction was
+     * in a TransactionQueue stage. The implied meaning of this value depends
+     * on how this event was passed to a listener.
+     *
+     * @see TransactionQueueListener
+     */
+    public long getStageDuration() {
+        return mStageDuration;
+    }
+
+    /**
+     * Returns the transaction that was being processed by the
+     * TransactionQueue.
+     */
+    public Transaction getTransaction() {
+        return mTransaction;
+    }
+
+    /**
+     * Returns the exception that occurred while servicing the transaction, if
+     * applicable.
+     */
+    public Throwable getThrowable() {
+        return mThrowable;
+    }
+}