1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.shiro.event;
20
21 import java.util.EventObject;
22
23 /**
24 * Root class for all of Shiro's event classes. Provides access to the timestamp when the event occurred.
25 *
26 * @since 1.3
27 */
28 public abstract class Event extends EventObject {
29
30 private final long timestamp; //millis since Epoch (UTC time zone).
31
32 public Event(Object source) {
33 super(source);
34 this.timestamp = System.currentTimeMillis();
35 }
36
37 /**
38 * Returns the timestamp when this event occurred as the number of milliseconds since Epoch (UTC time zone).
39 *
40 * @return the timestamp when this event occurred as the number of milliseconds since Epoch (UTC time zone).
41 */
42 public long getTimestamp() {
43 return this.timestamp;
44 }
45 }