createtag.java

这是学习Java必须读懂两套源代码

    emailVisible = req.getParameter("emailVisible");

    // Harvest the input parameters for any required extended properties
    for( Iterator it=required.keySet().iterator(); it.hasNext(); ) {
      prop = (String)it.next();
      if( (tmp = req.getParameter(prop)) != null  && tmp.length() > 0 ) {
        required.put(prop,tmp);
      } else {
        required.put(prop,"");
        extended_required = false;
      }
    }

    // Harvest the input parameters for any optional extended properties
    for( Iterator it=properties.keySet().iterator(); it.hasNext(); ) {
      prop = (String)it.next();
      if( (tmp = req.getParameter(prop)) != null ) {
        properties.put(prop,tmp);
      }
    }

    // Validate required fields, error string comes from yazd.tag.properties
    if( email == null || email.length() == 0 || !extended_required ||
	username == null || username.length() == 0 ||
        ((password == null || password.length() == 0) && !generate_password) ) {
        jr.addError(TagPropertyManager.getTagProperty("yazd.tag.create.required"));
        return SKIP_BODY;
    }

    // Validate password confirmation if confirm is true.
    // Error string comes from yazd.tag.properties
    if( confirm_password && (confirm == null || !password.equals(confirm)) ) {
        password = null;
        confirm = null;
        jr.addError(TagPropertyManager.getTagProperty("yazd.tag.create.confirm_password"));
        return SKIP_BODY;
    }

    // Generate a password for user if requested
    if( generate_password ) {
      password = jr.GeneratePassword();
      properties.put("password",password);
    }

    // Try to create the new user account
    ForumFactory ff = jr.getForumFactory();
    ProfileManager pm = jr.getProfileManager();
    try {
      user = pm.createUser( username, password, email );
    } catch( UserAlreadyExistsException e ) {
      // userid is already in use, user has to try again
      jr.addError(TagPropertyManager.getTagProperty("yazd.tag.create.userexists"));
      username = null;
      return SKIP_BODY;
    }

    // new user account created, save user data
    try {
      // Save standard user data
      if( name != null && name.length() > 0 ) {
        user.setName( name );
      }
      if( nameVisible != null && nameVisible.length() > 0) {
        user.setNameVisible( true );
      } else {
        user.setNameVisible( false );
      }
      if( emailVisible != null && emailVisible.length() > 0 ) {
        user.setEmailVisible( true );
      } else {
        user.setEmailVisible( false );
      }

      // Save any extended user properties
      // thread_depth, message_depth, and items_per_page are special
      // extended properties used for display preferences
      for( Iterator it=properties.keySet().iterator(); it.hasNext(); ) {
	tmp = (String)it.next();
        user.setProperty( tmp, (String)properties.get(tmp));
        if( tmp.equals(YazdState.MESSAGE_DEPTH) )
	  js.setMessageDepth(Integer.valueOf((String)properties.get(tmp)).intValue());
        if( tmp.equals(YazdState.THREAD_DEPTH) )
          js.setThreadDepth(Integer.valueOf((String)properties.get(tmp)).intValue());
        if( tmp.equals(YazdState.ITEMS_PER_PAGE) )
          js.setItemsPerPage(Integer.valueOf((String)properties.get(tmp)).intValue());
      }
       
      // Save any required extended user properties
      // thread_depth, message_depth, and items_per_page are special
      // extended properties used for display preferences
      for( Iterator it=required.keySet().iterator(); it.hasNext(); ) {
        tmp = (String)it.next();
        user.setProperty( tmp, (String)required.get(tmp));
        if( tmp.equals(YazdState.MESSAGE_DEPTH) )
          js.setMessageDepth(Integer.valueOf((String)required.get(tmp)).intValue());
        if( tmp.equals(YazdState.THREAD_DEPTH) )
          js.setThreadDepth(Integer.valueOf((String)required.get(tmp)).intValue());
        if( tmp.equals(YazdState.ITEMS_PER_PAGE) )
          js.setItemsPerPage(Integer.valueOf((String)required.get(tmp)).intValue());
      }
      // Finally, get authorization for new user account
      auth = AuthorizationFactory.getAuthorization( username, password );
    } catch(UnauthorizedException e) {
      throw new JspException("Create tag not authorized to set user values.");
    }

    // Account is now created
    created = true;

    // See if user should be automatically logged in
    if( auto_login ) {
      // User is now authorized as if they had logged in
      js.setAuthorization(auth);
      js.setLoggedIn(true);
    }

    // All done, the body of the create tag can now redirect the
    // user some where else if needed.
    return EVAL_BODY_INCLUDE;
  }

  /**
   * Method called at end of create Tag
   *
   * @return <b>SKIP_PAGE</b> if new user account created, <b>EVAL_PAGE</b> if user account has not been created yet.
   */

  public final int doEndTag() throws JspException
  {
    if( created )
      return SKIP_PAGE;
    return EVAL_PAGE;
  }

  /**
   * Set a flag indicating that password changes should be confirmed
   * (Optional attribute).
   */
  public final void setConfirm(String name)
  {
    if( name.equals("true") )
      confirm_password = true;
  }

  /**
   * Set a flag indicating that password will be generated for user
   * (Optional attribute).
   */
  public final void setPassword(String name)
  {
    if( name.equals("true") )
      generate_password = true;
  }

  /**
   * Set a flag indicating that user should be logged in once account
   * is created
   * (Optional attribute).
   */
  public final void setLogin(String name)
  {
    if( name.equals("true") )
      auto_login = true;
  }

  // Get methods for standard user data which is made
  // availabe to JSP author via a script variable

  /**
   * User Email address property which can be obtained by the JSP page
   * using &lt;jsp:getProperty name=<i>"id"</i> property="email"/&gt;
   *
   * @return String - user email address
   */
  public final String getEmail()
  {
    if( email == null )
      return "";
    return email;
  }

  /**
   * User Username (userid) property which can be obtained by the JSP page
   * using &lt;jsp:getProperty name=<i>"id"</i> property="username"/&gt;
   *
   * @return String - user username (forum userid)
   */
  public final String getUsername()
  {
    if( username == null )
      return "";
    return username;
  }

  /**
   * Password entered in previous HTML form submisson which can be
   * obtained by the JSP page using
   * &lt;jsp:getProperty name=<i>"id"</i> property="password"/&gt;
   *
   * @return String - password the user entered in the HTML form submitted
   */
  public final String getPassword()
  {
    if( password == null )
      return "";
    return password;
  }

  /**
   * Confirm Password entered in previous HTML form submisson which can be
   * obtained by the JSP page using
   * &lt;jsp:getProperty name=<i>"id"</i> property="confirm"/&gt;
   *
   * @return String - confirm password the user entered in the HTML form submitted
   */
  public final String getConfirm()
  {
    if( confirm == null )
      return "";
    return confirm;
  }

  /**
   * User Name (real name) property which can be obtained by the JSP page
   * using &lt;jsp:getProperty name=<i>"id"</i> property="name"/&gt;
   *
   * @return String - user name (real name)
   */
  public final String getName()
  {
    if( name == null )
      return "";
    return name;
  }

  /**
   * User NameVisible (real name) property which can be obtained by the
   * JSP Page using &lt;jsp:getProperty name=<i>"id"</i> property="nameVisible"/&gt;
   *
   * @return checkbox value if user real name should be visible.
   */
  public final String getNameVisible()
  {
    if( nameVisible != null )
      return "checked";
    return "";
  }

  /**
   * User EmailVisible (email address) property which can be obtained by the
   * JSP Page using &lt;jsp:getProperty name=<i>"id"</i> property="emailVisible"/&gt;
   *
   * @return checkbox value if user email address should be visible.
   */
  public final String getEmailVisible()
  {
    if( emailVisible != null )
      return "checked";
    return "";
  }

  /**
   * Method used by the getYazdProperty tag to get an extended User
   * property from the create tag script variable.
   *
   * @return String - value of the property
   */
  public final String getProperty(String name)
  {
    String tmp = (String)properties.get(name);
    if( tmp != null )
      return tmp;
    tmp = (String)required.get(name);
    if( tmp != null )    
      return tmp;
    return "";
  }

  /**
   * Method used by the setYazdProperty tag to set an extended User
   * property from the create tag script variable.
   */
  public final void setProperty(String name, String value)
  {
    user.setProperty(name,value);
    if( properties.containsKey(name) )
      properties.put(name,value);
    else if( required.containsKey(name) )
      properties.put(name,value);
  }
}