1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.amazonrankings;
24  
25  import com.liferay.portlet.amazonrankings.model.AmazonRankings;
26  import com.liferay.portlet.amazonrankings.util.AmazonRankingsUtil;
27  
28  import java.util.ArrayList;
29  import java.util.List;
30  
31  import javax.portlet.PortletPreferences;
32  import javax.portlet.PreferencesValidator;
33  import javax.portlet.ValidatorException;
34  
35  /**
36   * <a href="AmazonRankingsPreferencesValidator.java.html"><b><i>View Source</i>
37   * </b></a>
38   *
39   * @author Brian Wing Shun Chan
40   *
41   */
42  public class AmazonRankingsPreferencesValidator
43      implements PreferencesValidator {
44  
45      public void validate(PortletPreferences preferences)
46          throws ValidatorException {
47  
48          List<String> badIsbns = new ArrayList<String>();
49  
50          String[] isbns = preferences.getValues("isbns", new String[0]);
51  
52          for (int i = 0; i < isbns.length; i++) {
53              AmazonRankings amazonRankings =
54                  AmazonRankingsUtil.getAmazonRankings(isbns[i]);
55  
56              if (amazonRankings == null) {
57                  badIsbns.add(isbns[i]);
58              }
59          }
60  
61          if (badIsbns.size() > 0) {
62              throw new ValidatorException(
63                  "Failed to retrieve ISBNs", badIsbns);
64          }
65      }
66  
67  }