searcourbycourseidhandler.java

在本系统中

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.*;


//可以按照专业名称、课程编号、课程名称查询课程信息。
//显示的课程信息包括：课程编号、课程名称、专业名称三个数据项
//数据库课程信息表中:courseID courseName majorID
public class SearCourByCourseIDHandler extends JInternalFrame
{
	private JTable table;

	private SearCourByCourseID searCourByCourseID;
	private JTextField field;
	
	public SearCourByCourseIDHandler(SearCourByCourseID searCourByCourID)  //,String Id
	{
		this.searCourByCourseID=searCourByCourID;
		field=searCourByCourseID.getField();
	
		searCourByCourseID.getButtonsPanel().getButton(0).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					String[] ccolumnNames={"课程编号(courseID)","课程名称(courseName)","专业名称(majorName)"
					};
		
					DefaultTableModel tableModel=new DefaultTableModel(ccolumnNames,0);		
					
					String sql1="select * from courseInfo";
					
					CourseInfoDAO courseInfoDAO=new CourseInfoDAO();
					ArrayList courseList=courseInfoDAO.excuteQuery(sql1);
					CourseInfoBean courseInfoBean=null;
					
					int flag=0;
					
					for(int j=0;j<courseList.size();j++)
					{
						courseInfoBean=(CourseInfoBean)courseList.get(j);
						if(courseInfoBean.getCourseID().trim().equals(field.getText().trim()) && courseInfoBean.getState().trim().equals("在编"))
						{
							String sql2="select * from majorInfo";
				
							MajorInfoDAO majorInfoDAO=new MajorInfoDAO();
							ArrayList list=majorInfoDAO.excuteQuery(sql2);
							MajorInfoBean majorInfoBean=null;
							
							for(int i=0;i<list.size();i++)
							{
								majorInfoBean=(MajorInfoBean)list.get(i);
								if(majorInfoBean.getMajorID().trim().equals(courseInfoBean.getMajorID().trim()))
								{
									String[] object={courseInfoBean.getCourseID(),courseInfoBean.getCourseName(),majorInfoBean.getMajorName()
									};
									tableModel.addRow(object);
								}
							
							}
							flag=1;
							break;
						}
					}
					
					if(flag==0)
					{
						JOptionPane.showMessageDialog(null,"没有该编号的课程!");
					}
					
					if(flag==1)
					{
						table=new JTable(tableModel);
					
						JScrollPane scrollPanel=new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
						searCourByCourseID.add(scrollPanel,BorderLayout.CENTER);
						searCourByCourseID.setSize(450,451);
					}			
									
				}
			}
		);	
		
		searCourByCourseID.getButtonsPanel().getButton(1).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					searCourByCourseID.setVisible(false);
				}
			}
		);

	}

}