JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2007, 2013, 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 com.sun.media.sound;

/**
 * This class stores the identity of source and destinations in connection
 * blocks, see ModelConnectionBlock.
 *
 * @author Karl Helgason
 */
public final class ModelIdentifier {

    /*
     *  Object    Variable
     *  ------    --------
     *
     *  // INPUT parameters
     *  noteon    keynumber                7 bit midi value
     *            velocity                 7 bit midi vale
     *            on                       1 or 0
     *
     *  midi      pitch                    14 bit midi value
     *            channel_pressure         7 bit midi value
     *            poly_pressure            7 bit midi value
     *
     *  midi_cc   0 (midi control #0       7 bit midi value
     *            1 (midi control #1       7 bit midi value
     *            ...
     *            127 (midi control #127   7 bit midi value
     *
     *  midi_rpn  0 (midi rpn control #0)  14 bit midi value
     *            1 (midi rpn control #1)  14 bit midi value
     *            ....
     *
     *  // DAHDSR envelope generator
     *  eg        (null)
     *            delay                    timecent
     *            attack                   timecent
     *            hold                     timecent
     *            decay                    timecent
     *            sustain                  0.1 %
     *            release                  timecent
     *
     *  // Low frequency oscillirator (sine wave)
     *  lfo       (null)
     *            delay                    timcent
     *            freq                     cent
     *
     *  // Resonance LowPass Filter 6dB slope
     *  filter    (null) (output/input)
     *            freq                     cent
     *            q                        cB
     *
     *  // The oscillator with preloaded wavetable data
     *  osc       (null)
     *            pitch                    cent
     *
     *  // Output mixer pins
     *  mixer     gain                     cB
     *            pan                      0.1 %
     *            reverb                   0.1 %
     *            chorus                   0.1 %
     *
     */
    private String object = null;
    private String variable = null;
    private int instance = 0;

    public ModelIdentifier(String object) {
        this.object = object;
    }

    public ModelIdentifier(String object, int instance) {
        this.object = object;
        this.instance = instance;
    }

    public ModelIdentifier(String object, String variable) {
        this.object = object;
        this.variable = variable;

    }

    public ModelIdentifier(String object, String variable, int instance) {
        this.object = object;
        this.variable = variable;
        this.instance = instance;

    }

    public int getInstance() {
        return instance;
    }

    public void setInstance(int instance) {
        this.instance = instance;
    }

    public String getObject() {
        return object;
    }

    public void setObject(String object) {
        this.object = object;
    }

    public String getVariable() {
        return variable;
    }

    public void setVariable(String variable) {
        this.variable = variable;
    }

    public int hashCode() {
        int hashcode = instance;
        if(object != null) hashcode |= object.hashCode();
        if(variable != null) hashcode |= variable.hashCode();
        return  hashcode;
    }

    public boolean equals(Object obj) {
        if (!(obj instanceof ModelIdentifier))
            return false;

        ModelIdentifier mobj = (ModelIdentifier)obj;
        if ((object == null) != (mobj.object == null))
            return false;

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