01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.internal.events;
22:
23: import com.db4o.events.*;
24: import com.db4o.internal.*;
25: import com.db4o.query.Query;
26:
27: /**
28: * Platform dependent code for dispatching events.
29: *
30: * @sharpen.ignore
31: */
32: public class EventPlatform {
33:
34: public static void triggerQueryEvent(Transaction transaction,
35: Event4Impl e, Query q) {
36: e.trigger(new QueryEventArgs(transaction, q));
37: }
38:
39: public static void triggerClassEvent(Event4Impl e,
40: ClassMetadata clazz) {
41: e.trigger(new ClassEventArgs(clazz));
42: }
43:
44: public static boolean triggerCancellableObjectEventArgs(
45: Transaction transaction, Event4Impl e, Object o) {
46: CancellableObjectEventArgs args = new CancellableObjectEventArgs(
47: transaction, o);
48: e.trigger(args);
49: return !args.isCancelled();
50: }
51:
52: public static void triggerObjectEvent(Transaction transaction,
53: Event4Impl e, Object o) {
54: e.trigger(new ObjectEventArgs(transaction, o));
55: }
56:
57: public static void triggerCommitEvent(Transaction transaction,
58: Event4Impl e, CallbackObjectInfoCollections collections) {
59: e.trigger(new CommitEventArgs(transaction, collections));
60: }
61:
62: public static boolean hasListeners(Event4Impl e) {
63: return e.hasListeners();
64: }
65: }
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