| /* |
| * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package sun.nio.ch.sctp; |
| |
| import java.lang.annotation.Native; |
| |
| /** |
| * Wraps the actual message or notification so that it can be |
| * set and returned from the native receive implementation. |
| */ |
| public class ResultContainer { |
| /* static final ints so that they can be referenced from native */ |
| @Native static final int NOTHING = 0; |
| @Native static final int MESSAGE = 1; |
| @Native static final int SEND_FAILED = 2; |
| @Native static final int ASSOCIATION_CHANGED = 3; |
| @Native static final int PEER_ADDRESS_CHANGED = 4; |
| @Native static final int SHUTDOWN = 5; |
| |
| private Object value; |
| private int type; |
| |
| int type() { |
| return type; |
| } |
| |
| boolean hasSomething() { |
| return type() != NOTHING; |
| } |
| |
| boolean isNotification() { |
| return type() != MESSAGE && type() != NOTHING ? true : false; |
| } |
| |
| void clear() { |
| type = NOTHING; |
| value = null; |
| } |
| |
| SctpNotification notification() { |
| assert type() != MESSAGE && type() != NOTHING; |
| |
| return (SctpNotification) value; |
| } |
| |
| MessageInfoImpl getMessageInfo() { |
| assert type() == MESSAGE; |
| |
| if (value instanceof MessageInfoImpl) |
| return (MessageInfoImpl) value; |
| |
| return null; |
| } |
| |
| SendFailed getSendFailed() { |
| assert type() == SEND_FAILED; |
| |
| if (value instanceof SendFailed) |
| return (SendFailed) value; |
| |
| return null; |
| } |
| |
| AssociationChange getAssociationChanged() { |
| assert type() == ASSOCIATION_CHANGED; |
| |
| if (value instanceof AssociationChange) |
| return (AssociationChange) value; |
| |
| return null; |
| } |
| |
| PeerAddrChange getPeerAddressChanged() { |
| assert type() == PEER_ADDRESS_CHANGED; |
| |
| if (value instanceof PeerAddrChange) |
| return (PeerAddrChange) value; |
| |
| return null; |
| } |
| |
| Shutdown getShutdown() { |
| assert type() == SHUTDOWN; |
| |
| if (value instanceof Shutdown) |
| return (Shutdown) value; |
| |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("Type: "); |
| switch (type) { |
| case NOTHING: sb.append("NOTHING"); break; |
| case MESSAGE: sb.append("MESSAGE"); break; |
| case SEND_FAILED: sb.append("SEND FAILED"); break; |
| case ASSOCIATION_CHANGED: sb.append("ASSOCIATION CHANGE"); break; |
| case PEER_ADDRESS_CHANGED: sb.append("PEER ADDRESS CHANGE"); break; |
| case SHUTDOWN: sb.append("SHUTDOWN"); break; |
| default : sb.append("Unknown result type"); |
| } |
| sb.append(", Value: "); |
| sb.append((value == null) ? "null" : value.toString()); |
| return sb.toString(); |
| } |
| } |