dxboolean.java

用Java写的面相对象的数据库管理系统

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-2000 by SMB GmbH. All rights reserved.
//
// $Id: DxBoolean.java,v 1.5 2000/10/28 16:55:14 daniela Exp $

package org.ozoneDB.DxLib;

import java.io.*;


public class DxBoolean extends DxObject implements Externalizable {
    boolean value;
    
    final static long serialVersionUID = 1L;
    
    
    public DxBoolean() {
        value = false;
    }
    
    
    public DxBoolean( boolean v ) {
        value = v;
    }
    
    
    public DxBoolean( DxBoolean v ) {
        super();
        value = v.value;
    }
    
    
    public Object clone() {
        return new DxBoolean( value );
    } 
    
    
    public boolean equals( Object obj ) {
        if (obj instanceof DxBoolean && obj != null) {
            if (this == obj) {
                return true;
            } 
            return value == ((DxBoolean)obj).value;
        } 
        return false;
    } 
    
    
    public boolean isLess( DxCompatible obj ) {
        if (obj.getClass().equals( getClass() )) {
            if (this == obj) {
                return false;
            } 
            // false ist kleiner als true
            return !value && ((DxBoolean)obj).value;
        } 
        return false;
    } 
    
    
    public String toString() {
        Boolean b = new Boolean( value );
        return b.toString();
    } 
    
    
    public boolean toBoolean() {
        return value;
    } 
    
    
    public int hashCode() {
        Boolean b = new Boolean( value );
        return b.hashCode();
    } 
    
    
    public void writeExternal( ObjectOutput out ) throws IOException {
        out.writeBoolean( value );
    } 
    
    
    public void readExternal( ObjectInput in ) throws IOException, ClassNotFoundException {
        value = in.readBoolean();
    } 
}