profilemanagementbean.java

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/*
* @author                        : Sujatha
* @Version                       : 1.0
*
* Development Environment        : Oracle9i JDeveloper
* Name of the File               : ProfileManagementBean.java
* Creation/Modification History  :
*
* Sujatha    10-Dec-2002      Created
*
*/
package oracle.otnsamples.vsm.services;

// Java Utility classes
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.TreeMap;
import java.util.Properties;
import java.util.Date;
import java.util.Calendar;

// EJB imports
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.FinderException;

// EJB Home and local interfaces
import oracle.otnsamples.vsm.JAASManager;
import oracle.otnsamples.vsm.entities.CustomerLocalHome;
import oracle.otnsamples.vsm.entities.CustomerLocal;
import oracle.otnsamples.vsm.entities.CountryLocalHome;
import oracle.otnsamples.vsm.entities.CountryLocal;
import oracle.otnsamples.vsm.entities.CountryPK;
import oracle.otnsamples.vsm.entities.ShopLocalHome;

import oracle.otnsamples.vsm.entities.ShopDetailLocalHome;
import oracle.otnsamples.vsm.entities.ShopLocal;

// Credit card validation web service related import
import oracle.otnsamples.ws.CreditCardValidationServiceStub;

// Value objects imports
import oracle.otnsamples.vsm.services.data.Profile;
import oracle.otnsamples.vsm.services.data.Shop;

// OTN Utilities for finding services, sending mails, formatting dates and currency,
// generating primary key etc.
import oracle.otnsamples.util.MailContent;
import oracle.otnsamples.util.Mailer;
import oracle.otnsamples.util.ServiceLocator;
import oracle.otnsamples.util.KeyFactory;
import oracle.otnsamples.util.Utilities;
import oracle.otnsamples.vsm.Constants;

/**
 * This is the implementation of Profile Management Service bean.
 * The bean provides implementations for all the profile management services
 * defined in the remote interface. The bean interacts with various local entity
 * beans to retrieve and store data to the persistent store.The entity beans
 * referenced in this bean are described in ejb-jar.xml
 */
public class ProfileManagementBean implements SessionBean {

  private SessionContext ctx ;
   
  /**
   * Initializes the bean
   */
  public void ejbCreate() {
  }

  /**
   * Container call back, called just after instance of this bean is activated
   */
  public void ejbActivate() {
  }

  /**
   * Container call back, called just before instance of this bean is passivated
   */
  public void ejbPassivate() {
  }

  /**
   * Container call back, called by container before it ends the life of the 
   * session object.
   */
  public void ejbRemove() {
  }

  /**
   * Set the associated session context.
   * The container calls this method after the instance creation.
   * @param <b>ctx</b> - A SessionContext interface for the instance.
   */
  public void setSessionContext(SessionContext ctx) {
    this.ctx = ctx;
  }

  /**
   * This business method registers a new mall user
   * @param <b>profile</b> - Information about the user to be registered
   * @exception <b>ProfileException</b> if the user cannot be registered
   */
  public void register( Profile profile ) throws ProfileException {
  
    // Check if the profile information has been specified
    if( profile == null || profile.getUserName().trim().equals("")) {
      throw new ProfileException("Profile information is null", "error.profile.null");
    }  

    // Check if the credit card expiry date is in the past. Raise exception if so.
    // Parse the entered date
    Date entry = Utilities.parse(profile.getCardExpiryDate(), "MM/yyyy");
      
    // Get the current date and set the time to zero to enable only
    // date comparison without time
    Calendar temp = Calendar.getInstance();
    temp.set(Calendar.AM_PM, Calendar.AM);
    temp.set(Calendar.HOUR, 0);
    temp.set(Calendar.MINUTE, 0);
    temp.set(Calendar.SECOND, 0);
    temp.set(Calendar.MILLISECOND, 0);
    Date currentDate = temp.getTime();
    if ( currentDate.after(entry)  ) {
      throw new ProfileException("Invalid credit card expiry date",
                                 "error.profile.invalidccdate");
    }
    
    CustomerLocalHome userHome = null;
    // Check if the username already exists
    try {
      userHome = getUserLocalHome();      
      CustomerLocal user = userHome.findByPrimaryKey(profile.getUserName());
      throw new ProfileException("User Name already exists","error.profile.duplicateuser");
    } catch( FinderException ex ) {
      // User does not exist. Continue with registration              
    }
      
    // Validate the credit card number specified by user using Web Service
    try {
      CreditCardValidationServiceStub ccServices = 
                                         new CreditCardValidationServiceStub(); 
      ccServices.validateCard( profile.getCardNumber() ); 
    } catch( Exception e) {
      e.printStackTrace();
      throw new ProfileException("Invalid credit card number", 
                                     "error.profile.invalidccnumber");
        }
        try {

        // Encrypt (string reversal) the credit card number before storing the value
        StringBuffer encryptedString = new StringBuffer( profile.getCardNumber() );      

        // Add the user information through the customer entity bean
        CustomerLocal user = userHome.create( profile.getUserName(), profile.getFirstName(),
                       profile.getLastName(), profile.getEmail(),
                       profile.getAddress(), profile.getCity(),
                       profile.getState(), profile.getCountryID(),
                       new Integer(profile.getZip()), profile.getPhone(), "shopuser",
                       profile.getPassword(), profile.getCardProvider(),
                       encryptedString.reverse().toString(),
                       Utilities.parse(profile.getCardExpiryDate(), "MM/yyyy" ) );
        user.setCountry(this.getCountryLocalHome().
          findByPrimaryKey(new CountryPK(profile.getCountryID())));
        JAASManager userManager= (JAASManager)ServiceLocator.getLocator().getService("java:/comp/env/UserManager");
        userManager.addUser(profile.getUserName(),profile.getPassword(),"shopuser");
    } catch( Exception ex ) {
      ex.printStackTrace();
      ctx.setRollbackOnly();
      try{
        JAASManager userManager= (JAASManager)ServiceLocator.getLocator().getService("java:/comp/env/UserManager");
        userManager.dropUser(profile.getUserName());
      } catch (Exception jaasex){
        jaasex.printStackTrace();
      } 
      
      if( ex instanceof ProfileException )
        throw new ProfileException("Unable to register user because ",
                                   ((ProfileException)ex).getMessageCode());
      else
        throw new ProfileException( "Unable to register user because " + ex.getMessage(), "error.profile.registration" );
    }
  }

  /**
   * This business method retrieves the profile information of a given user
   * @param <b>userName</b> - userName for which the profile information
   *                           needs to be retrieved
   * @return <b>Profile</b> - the profile information of the user
   * @exception <b>ProfileException</b> if the profile cannot be retrieved
   */
  public Profile getProfile( String userName ) throws ProfileException {

    // Check if the username has been specified
    if( userName == null || userName.trim().equals("") ) {
      throw new ProfileException("User name is null", "error.profile.usernull");
    }
    
    Profile profile = null;
    try {
      // Look up the customer bean
      CustomerLocalHome userHome = getUserLocalHome();

      // Search if the name entered by the user exists in the users table      
      CustomerLocal user = userHome.findByPrimaryKey(userName);


      // Create a new value object with the profile information
      profile = new Profile( user.getUserName(), user.getFirstName(),
                             user.getLastName(), user.getEmail(),
                             user.getAddress(), user.getCity(),
                             user.getState(), user.getCtryID(),
                             user.getZip().toString(), user.getPhone(),
                             user.getRole(), user.getPassword(),
                             user.getCardProvider(), user.getCardNumber(),
                             Utilities.format(user.getCardExpiryDate(),"MM/yyyy"));

      // Decrypt (string reversal) the credit card number before storing the value
      StringBuffer decryptedString = new StringBuffer( profile.getCardNumber() );      
      profile.setCardNumber(decryptedString.reverse().toString());                       

    } catch( Exception ex ) {
      throw new ProfileException( "Unable to retrieve user profile because " + 
                                  ex.getMessage(), "error.profile.retrieval" );
    }
    // Return back the value object created.
    return profile;
  }

  /**
   * This business method updates the profile information of a user
   * @param <b>profile</b> - New information of the user whose profile
   *                         has to to updated
   * @exception <b>ProfileException</b> if the profile information cannot
   *                                    be updated
   */
  public void updateProfile(Profile profile) throws ProfileException {

    // Check if profile information has been specified
    if( profile == null ) {
      throw new ProfileException("Profile information is null", "error.profile.null");
    }
    
    // Check if the credit card expiry date is in the past. Raise exception if so.
    // Parse the entered date
    Date entry = Utilities.parse(profile.getCardExpiryDate(), "MM/yyyy");
      
    // Get the current date and set the time to zero to enable only
    // date comparison without time
    Calendar temp = Calendar.getInstance();
    temp.set(Calendar.AM_PM, Calendar.AM);
    temp.set(Calendar.HOUR, 0);
    temp.set(Calendar.MINUTE, 0);
    temp.set(Calendar.SECOND, 0);
    temp.set(Calendar.MILLISECOND, 0);
    temp.set(Calendar.DATE,1);
    Date currentDate = temp.getTime();
    if ( currentDate.after(entry)  ) {
      throw new ProfileException("Invalid credit card expiry date",
                                 "error.profile.invalidccdate");
    }

    // Validate the credit card number using the credit card web service
    try {
      CreditCardValidationServiceStub ccServices = new CreditCardValidationServiceStub();
      ccServices.validateCard( profile.getCardNumber() );
    } catch( Exception ex) {
      throw new ProfileException( "Invalid credit card number", 
                                    "error.profile.invalidccnumber");
    }

    try {
      // Lookup the customer bean
      CustomerLocalHome userHome = getUserLocalHome();
      
      // Locate the customer bean using the username
      CustomerLocal user = userHome.findByPrimaryKey(profile.getUserName());
      
      // Update the customer bean using the values in the value object
      user.setFirstName(profile.getFirstName());
      user.setLastName(profile.getLastName());
      user.setEmail(profile.getEmail());
      user.setAddress(profile.getAddress());
      user.setCity(profile.getCity());
      user.setState(profile.getState());
      user.setCtryID(profile.getCountryID());
      user.setZip(new Integer(profile.getZip()));
      user.setPhone(profile.getPhone());
      user.setCardProvider(profile.getCardProvider());
      user.setCountry(this.getCountryLocalHome().
          findByPrimaryKey(new CountryPK(profile.getCountryID())));

      user.setCardExpiryDate(Utilities.parse(profile.getCardExpiryDate(), "MM/yyyy" ));
      // Encrypt (string reversal) the credit card number before storing the value
      StringBuffer encryptedString = new StringBuffer( profile.getCardNumber() );      
      user.setCardNumber(encryptedString.reverse().toString());
    } catch( Exception ex ) {
      throw new ProfileException( "Unable to update user profile because " +