01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2007 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.core.blackboard;
28:
29: import org.cougaar.util.StackElements;
30:
31: /**
32: * A container for a tranaction's add/change/remove of a single
33: * object.
34: */
35: public abstract class EnvelopeTuple implements java.io.Serializable {
36: public abstract int getAction();
37:
38: abstract public Object getObject();
39:
40: public boolean isAdd() {
41: return false;
42: }
43:
44: public boolean isRemove() {
45: return false;
46: }
47:
48: public boolean isChange() {
49: return false;
50: }
51:
52: public boolean isBulk() {
53: return false;
54: }
55:
56: public boolean isEvent() {
57: return false;
58: }
59:
60: public StackElements getStack() {
61: return null;
62: }
63:
64: abstract boolean applyToSubscription(Subscription s,
65: boolean isVisible);
66: }
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