infodialog.java

java数据库编程源码

package JavaDatabaseBible.part2;

import java.awt.*;
import java.util.Hashtable;
import java.util.Vector;
import javax.swing.*;
import javax.swing.JTree;
import javax.swing.border.*;
import javax.swing.tree.*;


public class InfoDialog extends JDialog{
  protected DatabaseUtilities dbUtils = null;
  protected JPanel dbInfoPanel = new JPanel();
  protected JPanel featuresPanel = new JPanel();
  protected JPanel transactionsPanel = new JPanel();
  protected JPanel topPanel = new JPanel(new BorderLayout());
  protected JPanel centerPanel = new JPanel(new BorderLayout());
  protected JPanel bottomPanel = new JPanel(new BorderLayout());
  
  public InfoDialog(DatabaseUtilities dbUtils){
    this.dbUtils=dbUtils;
    setTitle("Database Info");
    getContentPane().setLayout(new BorderLayout());
     
    String[] dbInfo = dbUtils.databaseInfo();
    dbInfoPanel.setLayout(new GridLayout(dbInfo.length,1,2,2));
    for(int i=0;i<dbInfo.length;i++){
      dbInfoPanel.add(new JLabel(dbInfo[i]));
    }
    dbInfoPanel.setBorder(new CompoundBorder(new BevelBorder(BevelBorder.LOWERED),new EmptyBorder(2,2,2,2))); 
    topPanel.add(new JLabel(" Database and Driver:"),BorderLayout.NORTH);
    topPanel.add(dbInfoPanel,BorderLayout.CENTER);
    getContentPane().add(topPanel,BorderLayout.NORTH);
     
    String[] features = dbUtils.featuresSupported();
    featuresPanel.setLayout(new GridLayout(features.length,1,2,2));
    for(int i=0;i<features.length;i++){
      featuresPanel.add(new JLabel(features[i]));
    }
    featuresPanel.setBorder(new CompoundBorder(new BevelBorder(BevelBorder.LOWERED),new EmptyBorder(2,2,2,2))); 
    centerPanel.add(new JLabel(" Supported Features:"),BorderLayout.NORTH);
    centerPanel.add(featuresPanel,BorderLayout.CENTER);
    getContentPane().add(centerPanel,BorderLayout.CENTER);
    
    String[] t = dbUtils.isolationLevelsSupported(); 
    transactionsPanel.setLayout(new GridLayout(t.length,1,2,2));
    for(int i=0;i<t.length;i++){
      transactionsPanel.add(new JLabel(t[i]));
    }
    transactionsPanel.setBorder(new CompoundBorder(new BevelBorder(BevelBorder.LOWERED),new EmptyBorder(2,2,2,2))); 
    bottomPanel.add(new JLabel(" Supported Transactions:"),BorderLayout.NORTH);
    bottomPanel.add(transactionsPanel,BorderLayout.CENTER);
    getContentPane().add(bottomPanel,BorderLayout.SOUTH);
  }
}