autoimpl.java

Java的面向对象数据库系统的源代码

// $Id: AutoImpl.java,v 1.3 2003/11/23 15:19:37 per_nyfelt Exp $
package odmg;

import org.ozoneDB.*;
import org.ozoneDB.odmg.*;

/**
 * @author <a href="http://www.softwarebuero.de/">SMB</a>
 * @version $Revision: 1.3 $Date: 2003/11/23 15:19:37 $
 */
public class AutoImpl extends OzoneObject implements Auto, Common {
    
    /**
     * The serialization version id used by the Java serialization.
     * See also the Java documentation.
     */
    final static long serialVersionUID = 1L;
    
    protected String name = "Auto";
    
    protected int age = 0;
    
    protected Auto link;
    
    
    public AutoImpl() {
        // System.out.println ("Auto ctor...");
    }
    
    
    public AutoImpl( String _name ) throws Exception{
        name = _name;
    }
    
    
    public boolean equals( Object obj ) {
        Auto auto = (Auto)obj;
        return name.equals( auto.name() );
    } 
    
    
    public Auto doSomething() throws Exception {
        EnhDatabase db = (EnhDatabase)ODMG.getDatabase2( this );
        Auto auto = (Auto)db.createPersistent( AutoImpl.class );
        return doSomething( auto );
    } 
    
    
    public Auto doSomething( Auto auto ) throws Exception {
        System.out.println( "doSomething(): got: " + auto.toString() + " (" + auto.getClass().getName() + ")" );
        return this;
    } 
    
    
    public void setLink( Auto auto ) {
        // System.out.println ("setLink(): " + auto.toString() + " (" + auto.getClass().getName() + ")");
        link = auto;
    } 
    
    
    public Auto link() {
        return link;
    } 
    
    
    public void setName( String newName ) {
        name = newName;
    } 
    
    
    public String name() {
        return name;
    } 
    
    
    public int setAge( int newAge ) {
        int old = age;
        age = newAge;
        return old;
    } 
    
    
    public int age() {
        return age;
    } 
    
    
    public void print() {
        System.out.println( toString() );
    } 
    
    
    public String toString() {
        // System.out.println ("toString()...");
        String linkString = link != null ? String.valueOf( ((OzoneProxy)link).remoteID() ) : "null";
        return "Auto: name=" + name + ", age=" + age + ", link=" + linkString;
    } 
    
    
    public void done() throws Exception {
    // System.out.println (toString() + " done.");
    } 
    
}