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/*
 * Copyright (c) 2016 University Nice Sophia Antipolis
 *
 * This file is part of btrplace.
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.btrplace.model;

/**
 * Model a virtual machine.
 * VM should not be instantiated directly. Use {@link Model#newVM()} instead.
 *
 * @author Fabien Hermenier
 * @see Model#newVM()
 */
public class VM implements Element {

    private int id;

    /**
     * The element identifier.
     */
    public static final String TYPE = "vm";

    /**
     * Make a new VM.
     *
     * @param i the VM identifier.
     */
    public VM(int i) {
        this.id = i;
    }

    @Override
    public int id() {
        return this.id;
    }

    @Override
    public String toString() {
        return TYPE + "#" + id;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof VM)) {
            return false;
        }

        VM vm = (VM) o;

        return id == vm.id();
    }

    @Override
    public int hashCode() {
        return id;
    }
}