searopencourinfobycouridhandler.java

在本系统中

//可以按照开课编号、专业编号、课程编号分别查询本学期、本学年的开课信息，
//也可以查询所有的开课信息。显示的开课信息包括：开课编号、课程名称、学期、学年、教师姓名五个数据项。


//按课程编号查询

package jin.handler;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.util.*;

import jin.dao.*;
import jin.bean.*;
import jin.view.*;
import jin.internalFrame.*;


public class SearOpenCourInfoByCourIDHandler extends JInternalFrame
{
	private JTable table;

	private SearOpenCourInfoByCourID searOpenCourInfoByCourID;
	private JComboBox comboBox;

	public SearOpenCourInfoByCourIDHandler(SearOpenCourInfoByCourID searOpenCourInfByCourID)  //,String Id
	{
		this.searOpenCourInfoByCourID=searOpenCourInfByCourID;
		comboBox=searOpenCourInfoByCourID.getComboBox();
		
		String sql1="select * from courseInfo";
		CourseInfoDAO courseInfoDAO=new CourseInfoDAO();
		ArrayList courlist=courseInfoDAO.excuteQuery(sql1);
		CourseInfoBean courseInfoBean=null;
		
		for(int i=0;i<courlist.size();i++)
		{
			courseInfoBean=(CourseInfoBean)courlist.get(i);
			comboBox.addItem(courseInfoBean.getCourseID());		
		}		
		
		searOpenCourInfoByCourID.getButtonsPanel().getButton(0).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{	
					String[] columnNames={"开课编号","课程名称","学期","学年","教师姓名"};
					DefaultTableModel tableModel=new DefaultTableModel(columnNames,0);	
					
					String sql1="select * from openCourseInfo where courseID='"+comboBox.getSelectedItem().toString().trim()+"'";
					OpenCourseInfoDAO openCourseInfoDAO=new OpenCourseInfoDAO();
					ArrayList openCourList=openCourseInfoDAO.excuteQuery(sql1);
					
					if(openCourList!=null && openCourList.size()>0)
					{
						OpenCourseInfoBean openCourseInfoBean=(OpenCourseInfoBean)openCourseInfoDAO.excuteQuery(sql1).get(0);
					
						String sql2="select * from teaInfo where teaID='"+openCourseInfoBean.getTeaID()+"'";
						TeaInfoDAO teaInfoDAO=new TeaInfoDAO();
						TeaInfoBean teaInfoBean=(TeaInfoBean)teaInfoDAO.excuteQuery(sql2).get(0);
						
						String sql3="select * from courseInfo where courseID='"+comboBox.getSelectedItem().toString().trim()+"'";
						CourseInfoDAO courseInfoDAO=new	CourseInfoDAO();
						CourseInfoBean courseInfoBean=(CourseInfoBean)courseInfoDAO.excuteQuery(sql3).get(0);
						
						String[] object={openCourseInfoBean.getOpenCourseID().trim(),courseInfoBean.getCourseName(),openCourseInfoBean.getOpenXQ(),openCourseInfoBean.getOpenYear(),teaInfoBean.getTeaName()
						};
						tableModel.addRow(object);		
					
					}
							
					else 
					{							
						JOptionPane.showMessageDialog(null,"该课程还没有开设!");
						searOpenCourInfoByCourID.setVisible(false);	
					}
				
					table=new JTable(tableModel);
			
					JScrollPane scrollPanel=new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
					searOpenCourInfoByCourID.add(scrollPanel,BorderLayout.CENTER);
					searOpenCourInfoByCourID.setSize(450,451);
				}
			}
		);	
		
		searOpenCourInfoByCourID.getButtonsPanel().getButton(1).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					searOpenCourInfoByCourID.setVisible(false);	
				}
			}
		);	
	}
}