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| 1 | +/* | |
| 2 | + * Copyright (c) 2004, 2010, 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.jvmstat.monitor; | |
| 27 | + | |
| 28 | +/** | |
| 29 | + * The base class for Instrumentation Monitoring Objects. This base class | |
| 30 | + * provides implementations of the {@link Monitor} methods that are common | |
| 31 | + * to all classes implementing the Monitor interface.. | |
| 32 | + * | |
| 33 | + * @author Brian Doherty | |
| 34 | + * @since 1.5 | |
| 35 | + */ | |
| 36 | +public abstract class AbstractMonitor implements Monitor { | |
| 37 | + protected String name; | |
| 38 | + protected Units units; | |
| 39 | + protected Variability variability; | |
| 40 | + protected int vectorLength; | |
| 41 | + protected boolean supported; | |
| 42 | + | |
| 43 | + /** | |
| 44 | + * Create a vector instrumentation monitoring object with the given | |
| 45 | + * name and attributes. | |
| 46 | + * | |
| 47 | + * @param name the name to assign to this instrumentation object. | |
| 48 | + * @param units the units of measure attribute | |
| 49 | + * @param variability the variability attribute | |
| 50 | + * @param supported support level indicator | |
| 51 | + * @param vectorLength the length of the vector, or 0 if not a vector type. | |
| 52 | + */ | |
| 53 | + protected AbstractMonitor(String name, Units units, Variability variability, | |
| 54 | + boolean supported, int vectorLength) { | |
| 55 | + this.name = name; | |
| 56 | + this.units = units; | |
| 57 | + this.variability = variability; | |
| 58 | + this.vectorLength = vectorLength; | |
| 59 | + this.supported = supported; | |
| 60 | + } | |
| 61 | + | |
| 62 | + /** | |
| 63 | + * Create a scalar instrumentation monitoring object with the given | |
| 64 | + * name and attributes. | |
| 65 | + * | |
| 66 | + * @param name the name to assign to this instrumentation object. | |
| 67 | + * @param units the units of measure attribute | |
| 68 | + * @param variability the variability attribute | |
| 69 | + * @param supported support level indicator | |
| 70 | + */ | |
| 71 | + protected AbstractMonitor(String name, Units units, Variability variability, | |
| 72 | + boolean supported) { | |
| 73 | + this(name, units, variability, supported, 0); | |
| 74 | + } | |
| 75 | + | |
| 76 | + /** | |
| 77 | + * {@inheritDoc} | |
| 78 | + */ | |
| 79 | + public String getName() { | |
| 80 | + return name; | |
| 81 | + } | |
| 82 | + | |
| 83 | + /** | |
| 84 | + * {@inheritDoc} | |
| 85 | + */ | |
| 86 | + public String getBaseName() { | |
| 87 | + int baseIndex = name.lastIndexOf(".")+1; | |
| 88 | + return name.substring(baseIndex); | |
| 89 | + } | |
| 90 | + | |
| 91 | + /** | |
| 92 | + * {@inheritDoc} | |
| 93 | + */ | |
| 94 | + public Units getUnits() { | |
| 95 | + return units; | |
| 96 | + } | |
| 97 | + | |
| 98 | + /** | |
| 99 | + * {@inheritDoc} | |
| 100 | + */ | |
| 101 | + public Variability getVariability() { | |
| 102 | + return variability; | |
| 103 | + } | |
| 104 | + | |
| 105 | + /** | |
| 106 | + * {@inheritDoc} | |
| 107 | + */ | |
| 108 | + public boolean isVector() { | |
| 109 | + return vectorLength > 0; | |
| 110 | + } | |
| 111 | + | |
| 112 | + /** | |
| 113 | + * {@inheritDoc} | |
| 114 | + */ | |
| 115 | + public int getVectorLength() { | |
| 116 | + return vectorLength; | |
| 117 | + } | |
| 118 | + | |
| 119 | + /** | |
| 120 | + * {@inheritDoc} | |
| 121 | + */ | |
| 122 | + public boolean isSupported() { | |
| 123 | + return supported; | |
| 124 | + } | |
| 125 | + | |
| 126 | + /** | |
| 127 | + * {@inheritDoc} | |
| 128 | + */ | |
| 129 | + public abstract Object getValue(); | |
| 130 | +} | |