1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portlet.currencyconverter;
16  
17  import com.liferay.portlet.currencyconverter.model.Currency;
18  import com.liferay.portlet.currencyconverter.util.CurrencyUtil;
19  
20  import java.util.ArrayList;
21  import java.util.List;
22  
23  import javax.portlet.PortletPreferences;
24  import javax.portlet.PreferencesValidator;
25  import javax.portlet.ValidatorException;
26  
27  /**
28   * <a href="CurrencyPreferencesValidator.java.html"><b><i>View Source</i></b>
29   * </a>
30   *
31   * @author Brian Wing Shun Chan
32   */
33  public class CurrencyPreferencesValidator implements PreferencesValidator {
34  
35      public void validate(PortletPreferences preferences)
36          throws ValidatorException {
37  
38          List<String> badSymbols = new ArrayList<String>();
39  
40          String[] symbols = preferences.getValues("symbols", new String[0]);
41  
42          for (int i = 0; i < symbols.length; i++) {
43              Currency currency = CurrencyUtil.getCurrency(symbols[i]);
44  
45              if (currency == null) {
46                  badSymbols.add(symbols[i]);
47              }
48          }
49  
50          if (badSymbols.size() > 0) {
51              throw new ValidatorException(
52                  "Failed to retrieve symbols", badSymbols);
53          }
54      }
55  
56  }