subsystem.java

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package com.everstar.usermanage;

import java.sql.*;
import java.io.*;
import java.util.ArrayList;
import com.everstar.database.*;

public class SubSystem {

	private int subSystemID;
	private String SystemName;
	private SubSystemList sysList;
	private Database dbConn;
	private int managerID;

	//constructor
	public SubSystem(String SystemName,SubSystemList sysList,Database dbConn)
	{
		this.dbConn = dbConn;
		this.SystemName = SystemName;
		this.managerID = 0;
		this.sysList = sysList;
		this.subSystemID = getMaxId()+1;
		inserttodb();
	}

	public SubSystem(int subSystemID,SubSystemList sysList,Database dbConn)
	{
		this.dbConn = dbConn;
		this.sysList = sysList;
		loadfromdb(subSystemID);
	}

	public int getmanagerID()
	{
		return managerID;
	}

	public void setmanagerID(int managerID)
	{
		this.managerID = managerID;
		updatedb();
	}


	public int getsubSystemID()
	{
		return subSystemID;
	}

	public String getSystemName()
	{
		return SystemName;
	}

	public void setSystemName(String sysName)
	{
		this.SystemName = sysName;
		updatedb();
	}

	//create a function belonged to the system

	public Fun createFunction(String functionName,String operate)
	{
		return new Fun(functionName,operate,this,dbConn);
	}

	//get the function

	public Fun getFunction(int functionID)
	{
		return new Fun(functionID,this,dbConn);
	}

	//remove a function

	public void removeFunction(int functionID)
	{
        try
        {
       		String DELETE_FUNCTION = "DELETE FROM FUN where systemid="+subSystemID+" and functionID="+functionID;
        	int i = dbConn.delete(DELETE_FUNCTION);
		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();
        }
	}

	//get all functionid from the subsystem

	public int[] FunList()
	{
        ArrayList tempArrayList = new ArrayList();
        try
        {
        	String LIST_FUNCTION = "SELECT functionid FROM FUN where systemid="+subSystemID;
        	ResultSet rs =dbConn.select(LIST_FUNCTION);
        	while(rs.next())
        	{
	        	tempArrayList.add(new Integer(rs.getInt(1)));
        	}
        	rs.close();
        	dbConn.close();
		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();
        }

		int[] listFunctionArray = new int[tempArrayList.size()];
		for (int i = 0;i < listFunctionArray.length; i++  )
		{
			listFunctionArray[i] = ((Integer)tempArrayList.get(i)).intValue();
		}
		return listFunctionArray;

	}

	private int getMaxId()
	{
        int temp = 0;
        try
        {
        	String GETMAXID = "SELECT MAX(SYSTEMID) FROM SUBSYSTEM";
        	ResultSet rs =dbConn.select(GETMAXID);
        	if(rs.next())
        	temp = rs.getInt(1);
        	rs.close();
        	dbConn.close();

		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();
        }

		return temp;

	}

	private int inserttodb()
	{
		int i=0;
        try
        {
			String INSERT_SYSTEM = "INSERT INTO SUBSYSTEM(systemid,name,managerid) values("+subSystemID+",'"+SystemName+"',"+managerID+")";
        	i = dbConn.insert(INSERT_SYSTEM);
		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();
        }
		return i;
	}

	private void loadfromdb(int subSystemID)
	{
		String LOAD_SYSTEM = "SELECT SYSTEMID,NAME,managerid FROM SUBSYSTEM where systemid="+subSystemID;
        try
        {
        	ResultSet rs = dbConn.select(LOAD_SYSTEM);
			if(rs.next())
			{
			this.subSystemID = rs.getInt(1);
			this.SystemName = rs.getString(2);
			this.managerID = rs.getInt(3);
			}
			rs.close();
        	dbConn.close();

		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();

        }

	}
	private int updatedb()
	{
		int i=0;
        try
        {
			String UPDATE_SYSTEM = "UPDATE SUBSYSTEM SET NAME='"+SystemName+"',managerid="+managerID+" where systemid="+subSystemID;
        	i=dbConn.update(UPDATE_SYSTEM);
		}
        catch( Exception sqle )
        {
            sqle.printStackTrace();
        }
	return i;
	}
}