/* * Copyright (c) 2004, 2010, 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.jvmstat.monitor; /** * The base class for Instrumentation Monitoring Objects. This base class * provides implementations of the {@link Monitor} methods that are common * to all classes implementing the Monitor interface.. * * @author Brian Doherty * @since 1.5 */public abstract class AbstractMonitor implements Monitor  {    protected String name;    protected Units units;    protected Variability variability;    protected int vectorLength;    protected boolean supported;     /**     * Create a vector instrumentation monitoring object with the given     * name and attributes.     *     * @param name the name to assign to this instrumentation object.     * @param units the units of measure attribute     * @param variability the variability attribute     * @param supported support level indicator     * @param vectorLength the length of the vector, or 0 if not a vector type.     */    protected AbstractMonitor(String name, Units units, Variability variability,                              boolean supported, int vectorLength) {        this.name = name;        this.units = units;        this.variability = variability;        this.vectorLength = vectorLength;        this.supported = supported;    }     /**     * Create a scalar instrumentation monitoring object with the given     * name and attributes.     *     * @param name the name to assign to this instrumentation object.     * @param units the units of measure attribute     * @param variability the variability attribute     * @param supported support level indicator     */    protected AbstractMonitor(String name, Units units, Variability variability,                              boolean supported) {        this(name, units, variability, supported, 0);    }     /**     * {@inheritDoc}     */    public String getName() {        return name;    }     /**     * {@inheritDoc}     */    public String getBaseName() {        int baseIndex = name.lastIndexOf(".")+1;        return name.substring(baseIndex);    }     /**     * {@inheritDoc}     */    public Units getUnits() {        return units;    }     /**     * {@inheritDoc}     */    public Variability getVariability() {        return variability;    }     /**     * {@inheritDoc}     */    public boolean isVector() {        return vectorLength > 0;    }     /**     * {@inheritDoc}     */    public int getVectorLength() {        return vectorLength;    }     /**     * {@inheritDoc}     */    public boolean isSupported() {        return supported;    }     /**     * {@inheritDoc}     */    public abstract Object getValue();}