classes.java

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package tom.bean;
import java.sql.*;
import java.util.*;
import tom.bean.Dbconnection;


public class Classes {
     private int classid;
	 private String classname;
	 private int gradeid;
	 private int specialityid;
	 private String action;
	 private String condition;
     private ResultSet rs;
     private int rowcount;
     private String message;
     private int id;
    public Classes() {
    	classid=0;
     	classname=null;
     	specialityid=0;
     	gradeid=0;
     	message=null;
    }
    //
    public void setAction(String s)
    {
    	action=s;
    }
    //
    public void setClassid(int n)
    {
    	classid=n;
    }
    public int getClassid()
    {
    	return classid;
    }
    //
    public void setClassname(String s)
    {
    	classname=s;
    }
    public String getClassname()
    {
    	return classname;
    }
    //
    public void setSpecialityid(int n)
    {
    	specialityid=n;
    }
    public int getSpecialityid()
    {
    	return specialityid;
    }
    //
    public void setGradeid(int n)
    {
    	gradeid=n;
    }
    public int getGradeid()
    {
    	return gradeid;
    }
    //
    public void setId(int n)
    {
    	id=n;
    }
    public int getId()
    {
    	return id;
    }
    public String getMessage()
    {
    	return message;
    }
    //
    public int getRowcount()
    {
    	return rowcount;
    }
    //
    public ResultSet classlist()
    {
    	condition="SELECT classid,classname,speciality.specialityname,grade.grade from class,grade,speciality where class.gradeid=grade.gradeid and class.specialityid=speciality.specialityid order by classid";
    	Dbconnection e=new Dbconnection();
        e.condb();
    	rs=e.select(condition);
    	rowcount=e.getRowcount();
        message=e.getMessage();
    	return rs;
    }
    //
    public void selectspec()
    {
    	condition="SELECT * from class where classid="+classid;
    	Dbconnection e=new Dbconnection();
        e.condb();
    	rs=e.select(condition);
    	try{
    		rs.next();
    		classid=rs.getInt(1);
    		classname=rs.getString(2);
    		specialityid=rs.getInt(3);
    		gradeid=rs.getInt(4);
    	}
    	catch(SQLException f){message="error";}
    }
    public void ManageClass()
    {
    	if(action.equals("add"))
    	condition="INSERT INTO class VALUES"+"("+classid+","+"'"+classname+"',"+specialityid+","+gradeid+")";
        if(action.equals("edit"))
        condition="update class set classid="+classid+",classname='"+classname+"',specialityid="+specialityid+",gradeid="+gradeid+" where classid="+id;
        if(action.equals("delete"))
        condition="DELETE FROM class WHERE classid="+classid; 
        Dbconnection e=new Dbconnection();	
        e.condb();
    	e.update(condition);
        message=e.getMessage();
    	  	
    }
    
}