1 /* |
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2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package sun.nio.ch; |
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26 |
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27 /** |
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28 * Wraps the actual message or notification so that it can be |
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29 * set and returned from the native receive implementation. |
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30 */ |
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31 public class SctpResultContainer { |
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32 /* static final ints so that they can be referenced from native */ |
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33 static final int NOTHING = 0; |
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34 static final int MESSAGE = 1; |
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35 static final int SEND_FAILED = 2; |
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36 static final int ASSOCIATION_CHANGED = 3; |
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37 static final int PEER_ADDRESS_CHANGED = 4; |
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38 static final int SHUTDOWN = 5; |
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39 |
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40 private Object value; |
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41 private int type; |
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42 |
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43 int type() { |
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44 return type; |
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45 } |
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46 |
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47 boolean hasSomething() { |
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48 return type() != NOTHING; |
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49 } |
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50 |
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51 boolean isNotification() { |
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52 return type() != MESSAGE && type() != NOTHING ? true : false; |
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53 } |
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54 |
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55 void clear() { |
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56 type = NOTHING; |
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57 value = null; |
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58 } |
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59 |
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60 SctpNotification notification() { |
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61 assert type() != MESSAGE && type() != NOTHING; |
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62 |
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63 return (SctpNotification) value; |
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64 } |
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65 |
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66 SctpMessageInfoImpl getMessageInfo() { |
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67 assert type() == MESSAGE; |
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68 |
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69 if (value instanceof SctpMessageInfoImpl) |
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70 return (SctpMessageInfoImpl) value; |
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71 |
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72 return null; |
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73 } |
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74 |
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75 SctpSendFailed getSendFailed() { |
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76 assert type() == SEND_FAILED; |
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77 |
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78 if (value instanceof SctpSendFailed) |
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79 return (SctpSendFailed) value; |
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80 |
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81 return null; |
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82 } |
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83 |
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84 SctpAssocChange getAssociationChanged() { |
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85 assert type() == ASSOCIATION_CHANGED; |
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86 |
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87 if (value instanceof SctpAssocChange) |
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88 return (SctpAssocChange) value; |
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89 |
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90 return null; |
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91 } |
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92 |
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93 SctpPeerAddrChange getPeerAddressChanged() { |
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94 assert type() == PEER_ADDRESS_CHANGED; |
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95 |
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96 if (value instanceof SctpPeerAddrChange) |
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97 return (SctpPeerAddrChange) value; |
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98 |
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99 return null; |
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100 } |
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101 |
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102 SctpShutdown getShutdown() { |
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103 assert type() == SHUTDOWN; |
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104 |
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105 if (value instanceof SctpShutdown) |
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106 return (SctpShutdown) value; |
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107 |
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108 return null; |
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109 } |
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110 |
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111 @Override |
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112 public String toString() { |
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113 StringBuilder sb = new StringBuilder(); |
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114 sb.append("Type: "); |
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115 switch (type) { |
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116 case NOTHING: sb.append("NOTHING"); break; |
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117 case MESSAGE: sb.append("MESSAGE"); break; |
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118 case SEND_FAILED: sb.append("SEND FAILED"); break; |
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119 case ASSOCIATION_CHANGED: sb.append("ASSOCIATION CHANGE"); break; |
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120 case PEER_ADDRESS_CHANGED: sb.append("PEER ADDRESS CHANGE"); break; |
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121 case SHUTDOWN: sb.append("SHUTDOWN"); break; |
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122 default : sb.append("Unknown result type"); |
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123 } |
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124 sb.append(", Value: "); |
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125 sb.append((value == null) ? "null" : value.toString()); |
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126 return sb.toString(); |
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127 } |
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128 } |
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