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| 1 | /* | ||
| 2 | * Copyright (c) 2005, 2008, 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 com.sun.management.VMOption; | ||
| 29 | import com.sun.management.VMOption.Origin; | ||
| 30 | import javax.management.openmbean.CompositeType; | ||
| 31 | import javax.management.openmbean.CompositeData; | ||
| 32 | import javax.management.openmbean.CompositeDataSupport; | ||
| 33 | import javax.management.openmbean.OpenDataException; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * A CompositeData for VMOption for the local management support. | ||
| 37 | * This class avoids the performance penalty paid to the | ||
| 38 | * construction of a CompositeData use in the local case. | ||
| 39 | */ | ||
| 40 | public class VMOptionCompositeData extends LazyCompositeData { | ||
| 41 | private final VMOption option; | ||
| 42 | |||
| 43 | private VMOptionCompositeData(VMOption option) { | ||
| 44 | this.option = option; | ||
| 45 | } | ||
| 46 | |||
| 47 | public VMOption getVMOption() { | ||
| 48 | return option; | ||
| 49 | } | ||
| 50 | |||
| 51 | public static CompositeData toCompositeData(VMOption option) { | ||
| 52 | VMOptionCompositeData vcd = new VMOptionCompositeData(option); | ||
| 53 | return vcd.getCompositeData(); | ||
| 54 | } | ||
| 55 | |||
| 56 | protected CompositeData getCompositeData() { | ||
| 57 | // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH | ||
| 58 | // vmOptionItemNames! | ||
| 59 | final Object[] vmOptionItemValues = { | ||
| 60 | option.getName(), | ||
| 61 | option.getValue(), | ||
| 62 | new Boolean(option.isWriteable()), | ||
| 63 | option.getOrigin().toString(), | ||
| 64 | }; | ||
| 65 | |||
| 66 | try { | ||
| 67 | return new CompositeDataSupport(vmOptionCompositeType, | ||
| 68 | vmOptionItemNames, | ||
| 69 | vmOptionItemValues); | ||
| 70 | } catch (OpenDataException e) { | ||
| 71 | // Should never reach here | ||
| 72 | throw new AssertionError(e); | ||
| 73 | } | ||
| 74 | } | ||
| 75 | |||
| 76 | private static final CompositeType vmOptionCompositeType; | ||
| 77 | static { | ||
| 78 | try { | ||
| 79 | vmOptionCompositeType = (CompositeType) | ||
| 80 | MappedMXBeanType.toOpenType(VMOption.class); | ||
| 81 | } catch (OpenDataException e) { | ||
| 82 | // Should never reach here | ||
| 83 | throw new AssertionError(e); | ||
| 84 | } | ||
| 85 | } | ||
| 86 | |||
| 87 | static CompositeType getVMOptionCompositeType() { | ||
| 88 | return vmOptionCompositeType; | ||
| 89 | } | ||
| 90 | |||
| 91 | private static final String NAME = "name"; | ||
| 92 | private static final String VALUE = "value"; | ||
| 93 | private static final String WRITEABLE = "writeable"; | ||
| 94 | private static final String ORIGIN = "origin"; | ||
| 95 | |||
| 96 | private static final String[] vmOptionItemNames = { | ||
| 97 | NAME, | ||
| 98 | VALUE, | ||
| 99 | WRITEABLE, | ||
| 100 | ORIGIN, | ||
| 101 | }; | ||
| 102 | |||
| 103 | public static String getName(CompositeData cd) { | ||
| 104 | return getString(cd, NAME); | ||
| 105 | } | ||
| 106 | public static String getValue(CompositeData cd) { | ||
| 107 | return getString(cd, VALUE); | ||
| 108 | } | ||
| 109 | public static Origin getOrigin(CompositeData cd) { | ||
| 110 | String o = getString(cd, ORIGIN); | ||
| 111 | return Enum.valueOf(Origin.class, o); | ||
| 112 | } | ||
| 113 | public static boolean isWriteable(CompositeData cd) { | ||
| 114 | return getBoolean(cd, WRITEABLE); | ||
| 115 | } | ||
| 116 | |||
| 117 | /** Validate if the input CompositeData has the expected | ||
| 118 | * CompositeType (i.e. contain all attributes with expected | ||
| 119 | * names and types). | ||
| 120 | */ | ||
| 121 | public static void validateCompositeData(CompositeData cd) { | ||
| 122 | if (cd == null) { | ||
| 123 | throw new NullPointerException("Null CompositeData"); | ||
| 124 | } | ||
| 125 | |||
| 126 | if (!isTypeMatched(vmOptionCompositeType, cd.getCompositeType())) { | ||
| 127 | throw new IllegalArgumentException( | ||
| 128 | "Unexpected composite type for VMOption"); | ||
| 129 | } | ||
| 130 | } | ||
| 131 | |||
| 132 | private static final long serialVersionUID = -2395573975093578470L; | ||
| 133 | } | ||