clientgui.java

基于corba的资源池,实现了实例池供客户端调用,并且实例池对实例的分配采用策略模式支持随即抽取,最近使用和循环抽取三个不同策略.(在visibroke下面开发的)

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileReader;
import java.io.LineNumberReader;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.JTextPane;

import Bank.AccountInfo;

import database.*;


public class ClientGUI extends JFrame {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JTextField bal_textField;
	private JTextPane message_textPane;
	private JTextField name_textField;
	private JTextField id_textField;
	private JTable main_table;
	private JScrollPane main_table_pane;
	private ButtonGroup buttonGroup = new ButtonGroup();
	
	Bank.AccountIterator accIterator;
	AccountInfo[] al;
	DatabaseTableModel model; 
	String sql;
	/**
	 * Launch the application
	 * @param args
	 */
	public static void main(String args[]) {
		try {
			ClientGUI frame = new ClientGUI();
			frame.setVisible(true);
			//初始化ORB
			org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(args, null);
			//利用POA全名与对象标识"BankManager"查找账户管理员
			LineNumberReader input = new LineNumberReader(new FileReader("iteratorServer.ior"));
			String ior = input.readLine();
			org.omg.CORBA.Object obj = orb.string_to_object(ior);
			frame.accIterator = Bank.AccountIteratorHelper.narrow(obj);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * Create the frame
	 */
	
	public ClientGUI() {
		super();
		//		
		setBounds(100, 100, 600, 425);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		final JSplitPane main_splitPane = new JSplitPane();
		getContentPane().add(main_splitPane, BorderLayout.CENTER);
		
		final JPanel qurry_panel = new JPanel();
		qurry_panel.setLayout(new BorderLayout());
		main_splitPane.setLeftComponent(qurry_panel);

		final JSplitPane qurry_splitPane = new JSplitPane();
		qurry_splitPane.setOrientation(JSplitPane.VERTICAL_SPLIT);
		qurry_panel.add(qurry_splitPane);

		final JPanel panel = new JPanel();
		panel.setLayout(new BorderLayout());
		qurry_splitPane.setLeftComponent(panel);

		id_textField = new JTextField();
		panel.add(id_textField);

		final JRadioButton idRadioButton = new JRadioButton();
		idRadioButton.setText("ID");
		panel.add(idRadioButton, BorderLayout.NORTH);
		buttonGroup.add(idRadioButton);

		final JPanel panel_1 = new JPanel();
		panel_1.setLayout(new BorderLayout());
		panel.add(panel_1, BorderLayout.SOUTH);

		name_textField = new JTextField();
		panel_1.add(name_textField);

		final JRadioButton nameRadioButton = new JRadioButton();
		nameRadioButton.setText("NAME");
		panel_1.add(nameRadioButton, BorderLayout.NORTH);
		buttonGroup.add(nameRadioButton);

		final JPanel balance_panel = new JPanel();
		balance_panel.setLayout(new BorderLayout());
		qurry_splitPane.setRightComponent(balance_panel);

		final JPanel panel_2 = new JPanel();
		panel_2.setLayout(new BorderLayout());
		balance_panel.add(panel_2);

		final JPanel panel_3 = new JPanel();
		panel_3.setLayout(new BorderLayout());
		panel_2.add(panel_3);

		message_textPane = new JTextPane();
		panel_3.add(message_textPane);

		final JPanel panel_6 = new JPanel();
		panel_6.setLayout(new BorderLayout());
		panel_3.add(panel_6, BorderLayout.NORTH);

		final JPanel panel_7 = new JPanel();
		panel_7.setLayout(new BorderLayout());
		panel_6.add(panel_7, BorderLayout.SOUTH);

		bal_textField = new JTextField();
		panel_7.add(bal_textField);

		final JRadioButton low_radioButton = new JRadioButton();
		low_radioButton.setText("小于");
		panel_7.add(low_radioButton, BorderLayout.NORTH);
		buttonGroup.add(low_radioButton);

		final JPanel panel_4 = new JPanel();
		panel_4.setLayout(new BorderLayout());
		panel_2.add(panel_4, BorderLayout.NORTH);

		final JRadioButton high_radioButton = new JRadioButton();
		high_radioButton.setText("大于");
		panel_4.add(high_radioButton);
		buttonGroup.add(high_radioButton);
		
		final JRadioButton equal_radioButton = new JRadioButton();
		equal_radioButton.setText("等于");
		panel_4.add(equal_radioButton, BorderLayout.SOUTH);
		buttonGroup.add(equal_radioButton);
		
		final JLabel balanceLabel = new JLabel();
		balanceLabel.setText(" BALANCE的取值");
		balance_panel.add(balanceLabel, BorderLayout.NORTH);

		final JLabel left_label = new JLabel();
		left_label.setText("选择查询条件");
		qurry_panel.add(left_label, BorderLayout.NORTH);

		final JPanel main_panel = new JPanel();
		main_panel.setLayout(new BorderLayout());
		main_splitPane.setRightComponent(main_panel);

		main_table = new JTable();
		main_table_pane = new JScrollPane();
		main_panel.add(main_table_pane, BorderLayout.CENTER);
		main_table_pane.setViewportView(main_table);
		
		final JLabel right_label = new JLabel();
		right_label.setText("查询结果: ");
		main_panel.add(right_label, BorderLayout.NORTH);

		final JPanel button_panel = new JPanel();
		main_panel.add(button_panel, BorderLayout.SOUTH);
		
		final JLabel nowPage_label = new JLabel();
		final JLabel totalPage_label = new JLabel();

		final JButton fisrt_button = new JButton();
		fisrt_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				//得到当前页要显示的数据
				al = accIterator.returnFirstPage();
				DatabaseTableModel model= new DatabaseTableModel(al ,true);
	        	main_table.setModel(model);
	        	right_label.setText("查询结果: "+" 当前页有"+al.length+"条记录");
	        	accIterator.setNowPage(1);
	        	nowPage_label.setText(""+accIterator.getNowPage());
			}
		});
		fisrt_button.setText("首页");
		button_panel.add(fisrt_button);
		
		final JButton pre_button = new JButton();
		pre_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				message_textPane.setText("");
				if(accIterator.hasPre()){
					//得到当前要显示的数据
					al = accIterator.pre();
					DatabaseTableModel model= new DatabaseTableModel(al ,true);
		        	main_table.setModel(model);
		        	right_label.setText("查询结果: "+" 当前页有"+al.length+"条记录");
		        	nowPage_label.setText(""+accIterator.getNowPage());
				}else{
					message_textPane.setText("到顶了,请向后浏览!");
				}
			}
		});
		pre_button.setText("上一页");
		button_panel.add(pre_button);

		final JButton next_button = new JButton();
		next_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				message_textPane.setText("");
				if(accIterator.hasNext()){
					//得到当前要显示的数据
					al = accIterator.next(sql);
					DatabaseTableModel model= new DatabaseTableModel(al ,true);
		        	main_table.setModel(model);
		        	right_label.setText("查询结果: "+" 当前页有"+al.length+"条记录");
		        	nowPage_label.setText(""+accIterator.getNowPage());
				}else{
					message_textPane.setText("到底了,请向前浏览!");
				}
			}
		});
		next_button.setText("下一页");
		button_panel.add(next_button);
		
		final JButton last_button = new JButton();
		last_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				//得到当前要显示的数据
				al = accIterator.returnLastPage();
				DatabaseTableModel model= new DatabaseTableModel(al ,true);
	        	main_table.setModel(model);
	        	right_label.setText("查询结果: "+" 当前页有"+al.length+"条记录");
	        	accIterator.setNowPage(Integer.parseInt(totalPage_label.getText()));
	        	nowPage_label.setText(""+accIterator.getNowPage());
			}
		});
		last_button.setText("尾页");
		button_panel.add(last_button);
		
		//final JLabel nowPage_label = new JLabel();
		//nowPage_label.setText("10000");
		button_panel.add(nowPage_label);
		
		final JLabel patition_label = new JLabel();
		patition_label.setText("/");
		button_panel.add(patition_label);
		
		//final JLabel totalPage_label = new JLabel();
		//totalPage_label.setText("10000");
		button_panel.add(totalPage_label);
		
		final JButton start_button = new JButton();
		start_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				try{
					accIterator.clean();
					if(idRadioButton.isSelected()){
						sql = "SELECT * FROM Accounts WHERE id = '"+ id_textField.getText()+ "'";
					}else if (nameRadioButton.isSelected()){
						sql = "SELECT * FROM Accounts WHERE name = '"+ name_textField.getText()+ "'";
					}else if(high_radioButton.isSelected()){
						sql = "SELECT * FROM Accounts WHERE balance > "+ bal_textField.getText();
					}else if(equal_radioButton.isSelected()){
						sql = "SELECT * FROM Accounts WHERE balance = "+ bal_textField.getText();
					}else if(low_radioButton.isSelected()){
						sql = "SELECT * FROM Accounts WHERE balance < "+ bal_textField.getText();
					}
					//得到当前要显示的数据
					al = accIterator.next(sql);
					//看是否没有查找到结果
					if(al[0].id.equals("null")){
						message_textPane.setText("没有查到符合查询条件的记录!");
						return;
					}
					totalPage_label.setText(""+accIterator.getTotalPage());
					nowPage_label.setText(""+accIterator.getNowPage());
					model = new DatabaseTableModel(al ,true);
					right_label.setText("查询结果: "+" 当前页有"+al.length+"条记录");
		        	main_table.setModel(model);
		        	message_textPane.setText("查询成功!");
				}catch(Exception e){
					message_textPane.setText("查询出错!");
					e.printStackTrace();
				}
			}
		});
		start_button.setText("查询");
		button_panel.add(start_button);

		final JButton exit_button = new JButton();
		exit_button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				System.exit(1);
			}
		});
		exit_button.setText("退出");
		button_panel.add(exit_button);

		//
	}
}