navigatorframe.java

jbuilder2006一书的所有源代码

package dbswing;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.dx.sql.dataset.*;
import com.borland.dbswing.*;
import javax.swing.tree.*;
import java.sql.*;

public class NavigatorFrame extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  Database database1 = new Database();
  QueryDataSet queryDataSet1 = new QueryDataSet();
  TableScrollPane tableScrollPane1 = new TableScrollPane();
  JdbTable jdbTable1 = new JdbTable();
  JPanel jPanel1 = new JPanel();
  JdbNavField jdbNavField1 = new JdbNavField();
  JdbNavList jdbNavList1 = new JdbNavList();
  JdbNavComboBox jdbNavComboBox1 = new JdbNavComboBox();
  JdbNavTree jdbNavTree1 = new JdbNavTree();
  JScrollPane jScrollPane1 = new JScrollPane();
  JScrollPane jScrollPane2 = new JScrollPane();

  public NavigatorFrame() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(520, 300));
    this.setTitle("导航类示例");
    //建立与SQLServer的books数据库的联接
    database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor(
        "jdbc:microsoft:sqlserver://bemyfriend:1433;DatabaseName=books", "sa",
        "", false, "com.microsoft.jdbc.sqlserver.SQLServerDriver"));
    //取得bookcategory数据表的记录
    queryDataSet1.setQuery(new com.borland.dx.sql.dataset.QueryDescriptor(
        database1, "select * from bookcategory", null, true, Load.ALL));
    jdbTable1.setDataSet(queryDataSet1);
    jdbNavField1.setPreferredSize(new Dimension(80, 22));
    jdbNavField1.setColumnName("categoryName");
    jdbNavField1.setDataSet(queryDataSet1);
    jdbNavComboBox1.setPreferredSize(new Dimension(140, 22));
    jdbNavComboBox1.setColumnName("categoryDescription");
    jdbNavComboBox1.setDataSet(queryDataSet1);
    jdbNavList1.setColumnName("categoryName");
    jdbNavList1.setDataSet(queryDataSet1);
    jdbNavTree1.setPreferredSize(new Dimension(100, 100));
    //创建一个根节点
    DefaultMutableTreeNode top = new DefaultMutableTreeNode("树根");
    //使用createNodes方法创建树的其它节点
    createNodes(top);
    //使用创建好的树枝创建结构树
    jdbNavTree1 = new JdbNavTree(top);
    //使根节点不可视
    jdbNavTree1.setRootVisible(false);
    //设置结构树的字段和数据源
    jdbNavTree1.setColumnName("categoryName");
    jdbNavTree1.setDataSet(queryDataSet1);

    tableScrollPane1.getViewport().add(jdbTable1, null);
    jScrollPane1.getViewport().add(jdbNavList1, null);
    jScrollPane1.setPreferredSize(new Dimension(100,100));
    jScrollPane2.getViewport().add(jdbNavTree1, null);
    jScrollPane2.setPreferredSize(new Dimension(100,100));
    jPanel1.add(jdbNavField1, null);
    jPanel1.add(jdbNavComboBox1, null);
    jPanel1.add(jScrollPane1, null);
    jPanel1.add(jScrollPane2, null);
    contentPane.add(tableScrollPane1,  BorderLayout.CENTER);
    contentPane.add(jPanel1, BorderLayout.NORTH);

  }

  protected void processWindowEvent(WindowEvent e) {
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  //创建树枝的方法
  private void createNodes(DefaultMutableTreeNode top) {
    DefaultMutableTreeNode treeNode = null;
    try {
      Connection conn = database1.getJdbcConnection();
      Statement stmt = conn.createStatement();
      ResultSet rs = stmt.executeQuery("select * from bookcategory");
      //创建树枝
      while (rs.next()) {
        treeNode = new DefaultMutableTreeNode(rs.getString("categoryname"));
        top.add(treeNode);
      }
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }
}