coursesearchpanel.java

使用JBuilder基于Oracle数据库的课程作业

package StudentManageSystem.factionpanels.searchpanel;

import StudentManageSystem.factionpanels.infopanel.TeacherInfoPanel;
import java.awt.event.ActionEvent;
import java.sql.ResultSet;
import StudentManageSystem.link.SQLRunner;
import javax.swing.tree.DefaultMutableTreeNode;
import java.sql.SQLException;
import StudentManageSystem.factionpanels.infopanel.DepartmentInfoPanel;
import StudentManageSystem.factionpanels.infopanel.CourseInfoPanel;

public class CourseSearchPanel extends SearchPanel {
    public CourseSearchPanel(String cno, boolean e){
        infoPanel=new CourseInfoPanel(e);
        initialize(cno,e);
    }

    public void addNodes() {
        try {
            if(top!=null)top.removeAllChildren();
            ResultSet rs=SQLRunner.getResult("select * from college where college_no='"+college_no+"'");
            if(!rs.next())return;
            top=new DefaultMutableTreeNode(college_no+rs.getString("coname"));
            ResultSet rdp=SQLRunner.getResult("select * from course where course.college_no='"+college_no+"'");
            while (rdp.next()) {
               String dno=rdp.getString("course_no");
               String dpname=rdp.getString("csname");
               DefaultMutableTreeNode dp=new DefaultMutableTreeNode(dno+'/'+dpname);
               top.add(dp);
          }
        } catch (SQLException ex) {
        }

    }

    public void setView(String s){
        String sub=(s.trim());
        sub=sub.substring(sub.length()-1,sub.length());
        if(sub.trim().equals("Ժ")){
            String cno=s.substring(0,2);
            showTableView("select * from course where course.college_no='"+cno+"'");
        }else{
            String sno=s.substring(0,8);
            showLeavesView(sno);
        }

    }
}