1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portlet.amazonrankings;
21  
22  import com.liferay.portlet.amazonrankings.model.AmazonRankings;
23  import com.liferay.portlet.amazonrankings.util.AmazonRankingsUtil;
24  
25  import java.util.ArrayList;
26  import java.util.List;
27  
28  import javax.portlet.PortletPreferences;
29  import javax.portlet.PreferencesValidator;
30  import javax.portlet.ValidatorException;
31  
32  /**
33   * <a href="AmazonRankingsPreferencesValidator.java.html"><b><i>View Source</i>
34   * </b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class AmazonRankingsPreferencesValidator
40      implements PreferencesValidator {
41  
42      public void validate(PortletPreferences prefs) throws ValidatorException {
43          List<String> badIsbns = new ArrayList<String>();
44  
45          String[] isbns = prefs.getValues("isbns", new String[0]);
46  
47          for (int i = 0; i < isbns.length; i++) {
48              AmazonRankings amazonRankings =
49                  AmazonRankingsUtil.getAmazonRankings(isbns[i]);
50  
51              if (amazonRankings == null) {
52                  badIsbns.add(isbns[i]);
53              }
54          }
55  
56          if (badIsbns.size() > 0) {
57              throw new ValidatorException(
58                  "Failed to retrieve ISBNs", badIsbns);
59          }
60      }
61  
62  }