entity.java

采用tapestry的简单OA系统

package com.ejsun.entapps.domain;

import java.io.Serializable;

/**
 * @author	Quake Wang
 * @since	2004-4-5
 * @version $Revision: 1.1 $
 * 
 **/
public abstract class Entity implements Serializable {
    private long id = -1;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public boolean isNew() {
        return (this.id == -1);
    }

    public boolean equals(Object o) {
        if (this == o) //quick return
            return true;
        if (!(o instanceof Entity))
            return false;
        return (id == ((Entity) o).getId());
    }
    
    public String toString() {
    	return (this.getClass().getName() + " " + id);
    }
}