newproject.java~6~

对项目

package zhaobiao.db;

import java.util.*;
import java.sql.*;
import zhaobiao.db.*;
import zhaobiao.date.*;

/**
 * <p>Title: 招标管理信息系统</p>
 * <p>Description: 招标管理信息系统设计</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: 北京王者无敌</p>
 * @author csk
 * @version 1.0
 */

public class NewProject {

  public NewProject() {
  }

  public void addProject(Project pj)
  {
    db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    long maxid=0;
    try {
      PreparedStatement ps1 = con.prepareStatement("select max(project_id) as id from project");
      rs =ps1.executeQuery();
      if(rs.next() ){
        maxid = rs.getLong("id")+1 ;
      }
      else
        maxid=1;
      if(ps1!=null)
        ps1.close();
    }
    catch (SQLException ex) {
      ex.printStackTrace() ;
    }
    String sql="insert into project(project_id,project_name,project_time,project_company,project_cost,project_content)values(?,?,?,?,?,?)";
    try {
      ps=con.prepareStatement(sql);
      ps.setLong(1,maxid);
      ps.setString(2,pj.getProject_name());
      ps.setString(3,pj.getProject_time());
      ps.setString(4,pj.getProject_company());
      ps.setString(5,pj.getProject_cost());
      ps.setString(6,pj.getProject_content());
      ps.executeUpdate();
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace();
    }
    freeCon();

  }
  public void updateProject(Project pj)
  {
    db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    String sql="update project set project_name=?,project_time=?,project_company=?,"
              +"project_cost=?,project_content=? where project_id=?";
    try {
      ps=con.prepareStatement(sql);
      ps.setString(1,pj.getProject_name());
      ps.setString(2,pj.getProject_time());
      ps.setString(3,pj.getProject_company());
      ps.setString(4,pj.getProject_cost());
      ps.setString(5,pj.getProject_content());
      ps.setLong(6,pj.getProject_id());
      ps.executeUpdate();
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace();
    }
    freeCon();
  }

  public void delProject(long pjid)
  {
    db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    String sql="delete from project where project_id=?";
    try {
      ps=con.prepareStatement(sql);
      ps.setLong(1,pjid);
      ps.executeUpdate();
      PreparedStatement ps1=con.prepareStatement("delete from project_product where project_id=?");
      ps1.setLong(1,pjid);
      ps1.executeUpdate();
      PreparedStatement ps2=con.prepareStatement("delete from ppm where project_id=?");
      ps2.setLong(1,pjid);
      ps2.executeUpdate();
      if(ps1!=null)
        ps1.close() ;
      if(ps2!=null)
        ps2.close() ;
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace() ;
    }
    freeCon();
  }


  public void addProjectType(long pjid,long typeid)
  {
    db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    String sql="insert into project_product(project_id,type_id) values(?,?)";
    try {
      ps=con.prepareStatement(sql);
       ps.setLong(1,pjid);
       ps.setLong(2,typeid);
       ps.executeUpdate();
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace();
    }
    freeCon();

  }

  public void delProjectidType(long pjid)
  {
    db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    String sql="delete from project_product where project_id=?";
    try {
      ps=con.prepareStatement(sql);
      ps.setLong(1,pjid);
      ps.executeUpdate();
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace();
    }
    freeCon();
  }

 public void delProjectTypeid(long typeid)
 {
   db=DBConnectionManager.getInstance();
    con=db.getConnection("idb");
    String sql="delete from project_product where type_id=?";
    try {
      ps=con.prepareStatement(sql);
      ps.setLong(1,typeid);
      ps.executeQuery();
    }
    catch (SQLException ex) {
      freeCon();
      ex.printStackTrace();

    }

    freeCon();
 }



  /**
     * 释放数据库资源<p>
     *PreparedStatement和ResultSep将关闭，Connection返回给连接池
     * @param      无
     * @repurn     无
     * @exception  SQLException
     *
     */
    public void freeCon(){
      try {
        if (rs!=null)
          rs.close() ;
        if (ps!=null)
          ps.close() ;
      }
      catch (SQLException ex) {
      }
      if (db!=null)
        db.freeConnection("idb",con) ;
    }

  private PreparedStatement ps=null;
  private DBConnectionManager db;
 private Connection con=null;
  private ResultSet rs=null;
}