searclassinfobyyuanxihandler.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.*;

//可以按照班级编号、班级名称、专业名称、院系名称分别查询班级信息，也可以查询所有的班级信息。
//显示的班级信息包括：班级编号、班级名称、专业名称、院系名称四个数据项。

//按照院系名称查询

public class SearClassInfoByYuanXiHandler extends JInternalFrame
{
	private JTable table;
	
	
	private SearClassInfoByYuanXi searClassInfoByYuanXi;
	private JTextField field;	
	
	public SearClassInfoByYuanXiHandler(SearClassInfoByYuanXi searClassInfByYuanXi)  //,String Id
	{
		this.searClassInfoByYuanXi=searClassInfByYuanXi;
		field=searClassInfoByYuanXi.getField();
	
		searClassInfoByYuanXi.getButtonsPanel().getButton(0).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					String[] ccolumnNames={"班级编号","班级名称","专业名称","院系名称"
					};
		
					DefaultTableModel tableModel=new DefaultTableModel(ccolumnNames,0);		
					
					String sql1="select * from majorInfo";
					
					MajorInfoDAO majorInfoDAO=new MajorInfoDAO();
					ArrayList majorlist=majorInfoDAO.excuteQuery(sql1);
					MajorInfoBean majorInfoBean=null;
					
					int flag=0;
					
					for(int i=0;i<majorlist.size();i++)
					{
						majorInfoBean=(MajorInfoBean)majorlist.get(i);
						if(majorInfoBean.getBelongTo().trim().equals(field.getText().trim()) && majorInfoBean.getState().trim().equals("在编"))
						{	
							String sql2="select * from classInfo";
							ClassInfoDAO classInfoDAO=new ClassInfoDAO();
							ArrayList classlist=classInfoDAO.excuteQuery(sql2);
							ClassInfoBean classInfoBean=null;
							
							for(int j=0;j<classlist.size();j++)
							{
								classInfoBean=(ClassInfoBean)classlist.get(j);
								if(classInfoBean.getMajorID().trim().equals(majorInfoBean.getMajorID().trim()))	
								{
									String[] object={classInfoBean.getClassID(),classInfoBean.getClassName(),majorInfoBean.getMajorName(),majorInfoBean.getBelongTo()
									};									
									tableModel.addRow(object);
									flag=1;	
								}
							}												
						}
					}					
					
					if(flag==0)
					{
						JOptionPane.showMessageDialog(null,"该系部没有班级!");
					}
					
					if(flag==1)
					{
						table=new JTable(tableModel);
					
						JScrollPane scrollPanel=new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
						searClassInfoByYuanXi.add(scrollPanel,BorderLayout.CENTER);
						searClassInfoByYuanXi.setSize(450,451);		
					}			
							
				}
			}
		);	
		
		searClassInfoByYuanXi.getButtonsPanel().getButton(1).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					searClassInfoByYuanXi.setVisible(false);
				}
			}
		);

	}

}