autoimpl.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: AutoImpl.java,v 1.7 2000/10/28 16:55:20 daniela Exp $

package org.ozoneDB.test.simple;

import org.ozoneDB.*;
import java.util.*;


public class AutoImpl extends OzoneObject implements Auto {
    
    /**
     * The serialization version id used by the Java serialization.
     * Please, see also the Java documentation.
     */
    final static long serialVersionUID = 1L;
    
    String name = "Ford";
    
    int age = 0;
    
    Auto link;
    
    Vector v;
    
    
    public AutoImpl() {
        // System.out.println ("Auto ctor...");
        v = new Vector();
        v.add( "dani" );
        
    }
    
    
    public void onCreate() throws Exception {
        System.out.println( "onCreate()..." );
    //       try {
    //           link = (Auto)database().createObject (BusImpl.class.getName(), 0, null);
    //           System.out.println (link.getClass().getName());
    //           }
    //       catch (Exception e) {
    //           System.out.println (e);
    //           }
    } 
    
    
    public void onDelete() throws Exception {
        System.out.println( "onDelete()..." );
        if (link != null) {
            database().deleteObject( link );
        } 
    } 
    
    
    public boolean equals( Object obj ) {
        Auto auto = (Auto)obj;
        return name.equals( auto.name() );
    } 
    
    
    public String nameName() throws Exception {
        System.out.println( self() );
        System.out.println( ((Auto)self()).link() );
        System.out.println( ((Auto)self()).link().name() );
        return ((Auto)self()).link().name();
    } 
    
    
    public Auto doSomthing( Auto auto ) throws Exception {
        // System.out.println ("got: " + auto.toString() + " (" + auto.getClass().getName() + ")");
        String linkName = link.name();
        System.out.println( "doSomething(): linkName=" + linkName );
        return link;
    } 
    
    
    public Auto setLink( Auto auto ) throws Exception {
        // System.out.println ("setLink(): " + auto.toString() + " (" + auto.getClass().getName() + ")");
        link = auto;
        return this;
    } 
    
    
    public Auto link() {
        return link;
    } 
    
    
    public void print() {
        System.out.println( toString() );
        
        System.out.println( "Vector:" );
        for (Enumeration e = v.elements(); e.hasMoreElements();) {
            System.out.println( e.nextElement() );
        } 
    } 
    
    
    public void setName( String newName ) {
        name = newName;
    } 
    
    
    public String name() {
        return name;
    } 
    
    
    public void setAge( Integer newAge ) {
        age = newAge.intValue();
    // throw new NullPointerException();
    } 
    
    
    public int setAge( int newAge ) {
        int ret = age;
        age = newAge;
        return age;
    } 
    
    
    public Integer age() {
        return new Integer( age );
    } 
    
    
    public String toString() {
        // System.out.println ("toString()...");
        return "Auto:" + name + ", " + String.valueOf( age );
    } 
    
    
    public void done() throws Exception {
    // System.out.println (toString() + " done.");
    } 
    
}