01 /*
02 * Copyright (c) 1995-2010, The University of Sheffield. See the file
03 * COPYRIGHT.txt in the software or at http://gate.ac.uk/gate/COPYRIGHT.txt
04 *
05 * This file is part of GATE (see http://gate.ac.uk/), and is free
06 * software, licenced under the GNU Library General Public License,
07 * Version 2, June 1991 (in the distribution as file licence.html,
08 * and also available at http://gate.ac.uk/gate/licence.html).
09 *
10 * Valentin Tablan 21/04/2001
11 *
12 * $Id: DatastoreEvent.java 12006 2009-12-01 17:24:28Z thomas_heitz $
13 */
14 package gate.event;
15
16 import gate.DataStore;
17 import gate.Resource;
18 /**
19 * This class models events fired by datastores. Such events occur when new
20 * resources are adopted by a datastore or when an existing resource from
21 * the datastore is deleted.
22 */
23 public class DatastoreEvent extends GateEvent {
24
25 /**
26 * Constructor.
27 * @param source the datastore that originated the event.
28 * @param type the event type.
29 * @param res the resource that has been adopted/deleted/etc.
30 * @param resourceID the ID corresponding to the resource in this datastore
31 */
32 public DatastoreEvent(DataStore source, int type, Resource res,
33 Object resourceID) {
34 super(source, type);
35 this.resource = res;
36 this.resourceID = resourceID;
37 }
38
39 protected Resource resource;
40 protected Object resourceID;
41
42 /**
43 * The type of events fired when a resource has been adopted
44 */
45 public static final int RESOURCE_ADOPTED = 301;
46
47 /**
48 * The type of events fired when a resource has been deleted from a datastore
49 */
50 public static final int RESOURCE_DELETED = 302;
51
52 /**
53 * The type of events fired when a resource has wrote into the datastore
54 */
55 public static final int RESOURCE_WRITTEN = 303;
56
57 /** Gets the ID of the resource involved in this event */
58 public Object getResourceID() {
59 return resourceID;
60 }
61
62 /** Gets the resource involved in this event */
63 public gate.Resource getResource() {
64 return resource;
65 }
66 }
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