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| 1 | /* | ||
| 2 | * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.management; | ||
| 27 | |||
| 28 | import java.io.Serializable; | ||
| 29 | import java.util.*; | ||
| 30 | import javax.management.openmbean.CompositeData; | ||
| 31 | import javax.management.openmbean.CompositeType; | ||
| 32 | import javax.management.openmbean.OpenType; | ||
| 33 | import javax.management.openmbean.TabularType; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * This abstract class provides the implementation of the CompositeData | ||
| 37 | * interface. A CompositeData object will be lazily created only when | ||
| 38 | * the CompositeData interface is used. | ||
| 39 | * | ||
| 40 | * Classes that extends this abstract class will implement the | ||
| 41 | * getCompositeData() method. The object returned by the | ||
| 42 | * getCompositeData() is an instance of CompositeData such that | ||
| 43 | * the instance serializes itself as the type CompositeDataSupport. | ||
| 44 | */ | ||
| 45 | public abstract class LazyCompositeData | ||
| 46 | implements CompositeData, Serializable { | ||
| 47 | |||
| 48 | private CompositeData compositeData; | ||
| 49 | |||
| 50 | // Implementation of the CompositeData interface | ||
| 51 | public boolean containsKey(String key) { | ||
| 52 | return compositeData().containsKey(key); | ||
| 53 | } | ||
| 54 | |||
| 55 | public boolean containsValue(Object value) { | ||
| 56 | return compositeData().containsValue(value); | ||
| 57 | } | ||
| 58 | |||
| 59 | public boolean equals(Object obj) { | ||
| 60 | return compositeData().equals(obj); | ||
| 61 | } | ||
| 62 | |||
| 63 | public Object get(String key) { | ||
| 64 | return compositeData().get(key); | ||
| 65 | } | ||
| 66 | |||
| 67 | public Object[] getAll(String[] keys) { | ||
| 68 | return compositeData().getAll(keys); | ||
| 69 | } | ||
| 70 | |||
| 71 | public CompositeType getCompositeType() { | ||
| 72 | return compositeData().getCompositeType(); | ||
| 73 | } | ||
| 74 | |||
| 75 | public int hashCode() { | ||
| 76 | return compositeData().hashCode(); | ||
| 77 | } | ||
| 78 | |||
| 79 | public String toString() { | ||
| 80 | /** FIXME: What should this be?? */ | ||
| 81 | return compositeData().toString(); | ||
| 82 | } | ||
| 83 | |||
| 84 | public Collection values() { | ||
| 85 | return compositeData().values(); | ||
| 86 | } | ||
| 87 | |||
| 88 | /* Lazy creation of a CompositeData object | ||
| 89 | * only when the CompositeData interface is used. | ||
| 90 | */ | ||
| 91 | private synchronized CompositeData compositeData() { | ||
| 92 | if (compositeData != null) | ||
| 93 | return compositeData; | ||
| 94 | compositeData = getCompositeData(); | ||
| 95 | return compositeData; | ||
| 96 | } | ||
| 97 | |||
| 98 | /** | ||
| 99 | * Designate to a CompositeData object when writing to an | ||
| 100 | * output stream during serialization so that the receiver | ||
| 101 | * only requires JMX 1.2 classes but not any implementation | ||
| 102 | * specific class. | ||
| 103 | */ | ||
| 104 | protected Object writeReplace() throws java.io.ObjectStreamException { | ||
| 105 | return compositeData(); | ||
| 106 | } | ||
| 107 | |||
| 108 | /** | ||
| 109 | * Returns the CompositeData representing this object. | ||
| 110 | * The returned CompositeData object must be an instance | ||
| 111 | * of javax.management.openmbean.CompositeDataSupport class | ||
| 112 | * so that no implementation specific class is required | ||
| 113 | * for unmarshalling besides JMX 1.2 classes. | ||
| 114 | */ | ||
| 115 | protected abstract CompositeData getCompositeData(); | ||
| 116 | |||
| 117 | // Helper methods | ||
| 118 | static String getString(CompositeData cd, String itemName) { | ||
| 119 | if (cd == null) | ||
| 120 | throw new IllegalArgumentException("Null CompositeData"); | ||
| 121 | |||
| 122 | return (String) cd.get(itemName); | ||
| 123 | } | ||
| 124 | |||
| 125 | static boolean getBoolean(CompositeData cd, String itemName) { | ||
| 126 | if (cd == null) | ||
| 127 | throw new IllegalArgumentException("Null CompositeData"); | ||
| 128 | |||
| 129 | return ((Boolean) cd.get(itemName)).booleanValue(); | ||
| 130 | } | ||
| 131 | |||
| 132 | static long getLong(CompositeData cd, String itemName) { | ||
| 133 | if (cd == null) | ||
| 134 | throw new IllegalArgumentException("Null CompositeData"); | ||
| 135 | |||
| 136 | return ((Long) cd.get(itemName)).longValue(); | ||
| 137 | } | ||
| 138 | |||
| 139 | static int getInt(CompositeData cd, String itemName) { | ||
| 140 | if (cd == null) | ||
| 141 | throw new IllegalArgumentException("Null CompositeData"); | ||
| 142 | |||
| 143 | return ((Integer) cd.get(itemName)).intValue(); | ||
| 144 | } | ||
| 145 | |||
| 146 | /** | ||
| 147 | * Compares two CompositeTypes and returns true if | ||
| 148 | * all items in type1 exist in type2 and their item types | ||
| 149 | * are the same. | ||
| 150 | */ | ||
| 151 | protected static boolean isTypeMatched(CompositeType type1, CompositeType type2) { | ||
| 152 | if (type1 == type2) return true; | ||
| 153 | |||
| 154 | // We can't use CompositeType.isValue() since it returns false | ||
| 155 | // if the type name doesn't match. | ||
| 156 | Set allItems = type1.keySet(); | ||
| 157 | |||
| 158 | // Check all items in the type1 exist in type2 | ||
| 159 | if (!type2.keySet().containsAll(allItems)) | ||
| 160 | return false; | ||
| 161 | |||
| 162 | for (Iterator iter = allItems.iterator(); iter.hasNext(); ) { | ||
| 163 | String item = (String) iter.next(); | ||
| 164 | OpenType ot1 = type1.getType(item); | ||
| 165 | OpenType ot2 = type2.getType(item); | ||
| 166 | if (ot1 instanceof CompositeType) { | ||
| 167 | if (! (ot2 instanceof CompositeType)) | ||
| 168 | return false; | ||
| 169 | if (!isTypeMatched((CompositeType) ot1, (CompositeType) ot2)) | ||
| 170 | return false; | ||
| 171 | } else if (ot1 instanceof TabularType) { | ||
| 172 | if (! (ot2 instanceof TabularType)) | ||
| 173 | return false; | ||
| 174 | if (!isTypeMatched((TabularType) ot1, (TabularType) ot2)) | ||
| 175 | return false; | ||
| 176 | } else if (!ot1.equals(ot2)) { | ||
| 177 | return false; | ||
| 178 | } | ||
| 179 | } | ||
| 180 | return true; | ||
| 181 | } | ||
| 182 | |||
| 183 | protected static boolean isTypeMatched(TabularType type1, TabularType type2) { | ||
| 184 | if (type1 == type2) return true; | ||
| 185 | |||
| 186 | List list1 = type1.getIndexNames(); | ||
| 187 | List list2 = type2.getIndexNames(); | ||
| 188 | |||
| 189 | // check if the list of index names are the same | ||
| 190 | if (!list1.equals(list2)) | ||
| 191 | return false; | ||
| 192 | |||
| 193 | return isTypeMatched(type1.getRowType(), type2.getRowType()); | ||
| 194 | } | ||
| 195 | |||
| 196 | private static final long serialVersionUID = -2190411934472666714L; | ||
| 197 | } | ||