customerbean.java

一个java

package bookstore.ejb;

import bookstore.util.*;

import java.sql.*;
import javax.sql.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;


public class CustomerBean implements EntityBean {

  java.lang.String customerID;
  java.lang.String name;
  java.lang.String account;
  java.lang.String password;
  int sexual;
  java.sql.Date birthDay;
  java.lang.String city;
  java.lang.String profession;
  java.lang.String iDCardNum;
  java.lang.String address;
  java.lang.String zip;
  java.lang.String phone;
  java.lang.String eMail;
  int rank;

  private Connection con=null;
  EntityContext entityContext;

  /**************************business methods*************************/

  public void setCustomerID(java.lang.String customerID) {
    this.customerID = customerID;
  }
  public void setName(java.lang.String name) {
    this.name = name;
  }
  public void setAccount(java.lang.String account) {
    this.account = account;
  }
  public void setPassword(java.lang.String password) {
    this.password = password;
  }
  public void setSexual(int sexual) {
    this.sexual = sexual;
  }
  public void setBirthDay(java.sql.Date birthDay) {
    this.birthDay = birthDay;
  }
  public void setCity(java.lang.String city) {
    this.city = city;
  }
  public void setProfession(java.lang.String profession) {
    this.profession = profession;
  }
  public void setIDCardNum(java.lang.String iDCardNum) {
    this.iDCardNum = iDCardNum;
  }
  public void setAddress(java.lang.String address) {
    this.address = address;
  }
  public void setZip(java.lang.String zip) {
    this.zip = zip;
  }
  public void setPhone(java.lang.String phone) {
    this.phone = phone;
  }
  public void setEMail(java.lang.String eMail) {
    this.eMail = eMail;
  }
  public void setRank(int rank) {
    this.rank = rank;
  }
  public java.lang.String getCustomerID() {
    return customerID;
  }
  public java.lang.String getName() {
    return name;
  }
  public java.lang.String getAccount() {
    return account;
  }
  public java.lang.String getPassword() {
    return password;
  }
  public int getSexual() {
    return sexual;
  }
  public java.sql.Date getBirthDay() {
    return birthDay;
  }
  public java.lang.String getCity() {
    return city;
  }
  public java.lang.String getProfession() {
    return profession;
  }
  public java.lang.String getIDCardNum() {
    return iDCardNum;
  }
  public java.lang.String getAddress() {
    return address;
  }
  public java.lang.String getZip() {
    return zip;
  }
  public java.lang.String getPhone() {
    return phone;
  }
  public java.lang.String getEMail() {
    return eMail;
  }
  public int getRank() {
    return rank;
  }

  public CustomerDetails getDetails()
   {
      System.out.println("CustomerBean getDetails");

      return new CustomerDetails (customerID, name,
             account, password, sexual, birthDay, city,
             profession, iDCardNum,address,zip,phone, eMail,rank);
   }//getDetails

  /**********************************ejb methods*************************/
  public java.lang.String ejbCreate(CustomerDetails customerValue)
      throws CreateException
  {
    System.out.println("CustomerBean ejbCreate");

        try
        {
          makeConnection();
          this.customerID=DBHelper.getNextCustomerID(con);
        }catch(Exception ex)
        {
          throw new EJBException("ejbCreate: "+ex.getMessage());
        }

        this.name=customerValue.getName();
        this.account=customerValue.getAccount();
        this.password=customerValue.getPassword();
        this.sexual=customerValue.getSexual();
        this.birthDay=customerValue.getBirthDay();
        this.city=customerValue.getCity();
        this.profession=customerValue.getProfession();
        this.iDCardNum=customerValue.getIDCardNum();
        this.address=customerValue.getAddress();
        this.zip=customerValue.getZip();
        this.phone=customerValue.getPhone();
        this.eMail=customerValue.getEmail();
        this.rank=customerValue.getRank();

        try {
            insertRow();
        } catch (Exception ex) {
             throw new EJBException("ejbCreate: " +
                 ex.getMessage());
        }

        return customerID;

  }
  public void ejbPostCreate(CustomerDetails customerValue) throws CreateException
  {
    System.out.println("CustomerBean ejbPostCreate");
  }

  public java.util.Collection ejbFindByCondition(String condition) throws FinderException {
    System.out.println("CustomerBean ejbFindByCondition");

    Collection result;

    try {
           result = selectByCondition(condition);
       } catch (Exception ex) {
             throw new EJBException("ejbFindByCondition " +
                 ex.getMessage());
       }
       return result;

  }

  public void ejbRemove() throws RemoveException {
    System.out.println("CustomerBean ejbRemove");

    try {
            deleteRow(customerID);
         } catch (Exception ex) {
              throw new EJBException("ejbRemove: " +
                  ex.getMessage());
         }
  }//ejbRemove

  public java.lang.String ejbFindByPrimaryKey(java.lang.String primaryKey) throws FinderException {

         System.out.println("CustomerBean ejbFindByPrimaryKey");

         boolean result;

         try {
             result = selectByPrimaryKey(primaryKey);
         } catch (Exception ex) {
               throw new EJBException("ejbFindByPrimaryKey: " +
                   ex.getMessage());
         }

         if (result) {
             return primaryKey;
         }
         else {
             throw new ObjectNotFoundException
                 ("Row for id " + primaryKey + " not found.");
         }
     }

     public void ejbLoad() {

          System.out.println("CustomerBean ejbLoad");

          try {
              loadCustomer();
           } catch (Exception ex) {
                throw new EJBException("ejbLoad: " +
                    ex.getMessage());
           }
      }//ejbLoad

      public void ejbStore()
      {

            System.out.println("CustomerBean ejbStore");

            try {
                storeCustomer();
             } catch (Exception ex) {
                  throw new EJBException("ejbStore: " +
                      ex.getMessage());
             }
        }//ejbStore

  public void ejbActivate()
  {
        System.out.println("CustomerBean ejbActivate");
        //
        customerID = (String)entityContext.getPrimaryKey();
    }

    public void ejbPassivate()
    {
        System.out.println("CustomerBean ejbPassivate");

        customerID= null;
    }

  public void unsetEntityContext()
  {
    System.out.println("CustomerBean ussetEntiyContext");
    this.entityContext = null;
  }
  public void setEntityContext(EntityContext entityContext) {
    System.out.println("CustomerBean setEntiyContext");
    this.entityContext = entityContext;
  }
  /******************************util methods*************************/
  private void makeConnection() {

        System.out.println("CustomerBean makeConnection in");
        try
           {
             InitialContext ic = new InitialContext();
             DataSource ds = (DataSource) ic.lookup("DBSource");
             con = ds.getConnection();
           }
           catch (Exception ex)
           {
             throw new EJBException("Unable to connect to database. " +
                                   ex.getMessage());
           }
        System.out.println("CustomerBean makeConnection out");
    } // makeConnection


    private void releaseConnection() {

        System.out.println("CustomerBean releaseConnection in");

        try {
            con.close();
        } catch (SQLException ex) {
             throw new EJBException("releaseConnection: " + ex.getMessage());
        }
        System.out.println("CustomerBean releaseConnection out");

    } // releaseConnection


    private void insertRow () throws SQLException {

        System.out.println("CustomerBean insertRow in");

        makeConnection();
        String insertStatement =
            "insert into Customer values ( ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? )";
        PreparedStatement prepStmt =
            con.prepareStatement(insertStatement);
        prepStmt.setString(1, customerID);
        prepStmt.setString(2, name);
        prepStmt.setString(3, account);
        prepStmt.setString(4, password);
        prepStmt.setInt(5, sexual);
        prepStmt.setDate(6,birthDay);
        prepStmt.setString(7, city);
        prepStmt.setString(8, profession);
        prepStmt.setString(9,iDCardNum);
        prepStmt.setString(10,address);
        prepStmt.setString(11, zip);
        prepStmt.setString(12, phone);
        prepStmt.setString(13, eMail);
        prepStmt.setInt(14,rank);

        prepStmt.executeUpdate();
        prepStmt.close();
        releaseConnection();
        System.out.println("CustomerBean insertRow out");
    }//insertRow

    private Collection selectByCondition(String condition) throws SQLException {

       System.out.println("CustomerBean selectByCondition in");

       makeConnection();
       String selectStatement =
               "select CustomerID " +
               "from Customer where "+condition;
       System.out.println(selectStatement);
       Statement stmt=con.createStatement();
       ResultSet rs=stmt.executeQuery(selectStatement);

       ArrayList a = new ArrayList();
       while (rs.next())
       {
           a.add(rs.getString(1));
       }

       stmt.close();
       releaseConnection();
       System.out.println("CustomerBean selectByCondition out");
       return a;
   }//selectByCondition

   private boolean selectByPrimaryKey(String primaryKey) throws SQLException {
        //本函数主要目的还在于确保customer_id在数据库表中是存在的
        System.out.println("CustomerBean selectByPrimaryKey in");

        makeConnection();
        //a question here
        String selectStatement =
                "select CustomerID " +
                "from Customer where CustomerID = ? ";
        PreparedStatement prepStmt =
                con.prepareStatement(selectStatement);
        prepStmt.setString(1, primaryKey);

        ResultSet rs = prepStmt.executeQuery();
        boolean result = rs.next();
        prepStmt.close();
        releaseConnection();
        System.out.println("CustomerBean selectByPrimaryKey out");
        return result;
    }//selectByPrimaryKey

    private void loadCustomer() throws SQLException {

        System.out.println("CustomerBean loadCustomer in");

        makeConnection();
        String selectStatement =
                "select Name, Account, Password,Sexual,BirthDay, City, Profession, IDCardNum,Address,Zip, Phone, EMail ,Rank " +
                "from Customer where CustomerID = ? ";
        PreparedStatement prepStmt =
                con.prepareStatement(selectStatement);

        prepStmt.setString(1, customerID);

        ResultSet rs = prepStmt.executeQuery();

        if (rs.next())
        {
            name = rs.getString(1);
            account = rs.getString(2);
            password = rs.getString(3);
            sexual = rs.getInt(4);
            birthDay=rs.getDate(5);
            city = rs.getString(6);
            profession = rs.getString(7);
            iDCardNum=rs.getString(8);
            address=rs.getString(9);
            zip = rs.getString(10);
            phone = rs.getString(11);
            eMail = rs.getString(12);
            rank=rs.getInt(13);
            prepStmt.close();
            releaseConnection();
        }
        else {
            prepStmt.close();
            releaseConnection();
            throw new NoSuchEntityException("loadCustomer:Row for id " +
                customerID + " not found in database.");
        }
        System.out.println("CustomerBean loadCustomer out");
    }//loadCustomer

    private void storeCustomer() throws SQLException {

        System.out.println("CustomerBean storeCustomer in");

        makeConnection();

        String updateStatement =
                "update Customer " +
                "set Name = ? , Account = ? , Password = ? , Sexual = ? ,"+
                "BirthDay=?,City = ? ,Profession= ?,IDCardNum= ? ,"+
                "Address = ? ,Zip= ? ,Phone = ? ,EMail = ? ,Rank = ?" +
                "where CustomerID = ? ";
        PreparedStatement prepStmt =
                con.prepareStatement(updateStatement);

        prepStmt.setString(1, name);
        prepStmt.setString(2, account);
        prepStmt.setString(3, password);
        prepStmt.setInt(4, sexual);
        prepStmt.setDate(5,birthDay);
        prepStmt.setString(6, city);
        prepStmt.setString(7,profession);
        prepStmt.setString(8,iDCardNum);
        prepStmt.setString(9,address);
        prepStmt.setString(10, zip);
        prepStmt.setString(11, phone);
        prepStmt.setString(12, eMail);
        prepStmt.setInt(13,rank);
        prepStmt.setString(14, customerID);

        int rowCount = prepStmt.executeUpdate();
        prepStmt.close();
        releaseConnection();

        if (rowCount == 0) {
            throw new EJBException("storeCustomer:Storing row for id " + customerID + " failed.");
        }
        System.out.println("CustomerBean storeCustomer out");
    }//storeCustomer

    private void deleteRow(String id) throws SQLException {

        System.out.println("CustomerBean deleteRow in");

        makeConnection();
        String deleteStatement =
                "delete from customer where CustomerID = ? ";
        PreparedStatement prepStmt =
                con.prepareStatement(deleteStatement);

        prepStmt.setString(1, id);
        prepStmt.executeUpdate();
        prepStmt.close();
        releaseConnection();
        System.out.println("CustomerBean deleteRow out");
    }//deleteRow

}