1
14
15 package com.liferay.portlet.amazonrankings;
16
17 import com.liferay.portlet.amazonrankings.model.AmazonRankings;
18 import com.liferay.portlet.amazonrankings.util.AmazonRankingsUtil;
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
33 public class AmazonRankingsPreferencesValidator
34 implements PreferencesValidator {
35
36 public void validate(PortletPreferences preferences)
37 throws ValidatorException {
38
39 List<String> badIsbns = new ArrayList<String>();
40
41 String[] isbns = preferences.getValues("isbns", new String[0]);
42
43 for (int i = 0; i < isbns.length; i++) {
44 AmazonRankings amazonRankings =
45 AmazonRankingsUtil.getAmazonRankings(isbns[i]);
46
47 if (amazonRankings == null) {
48 badIsbns.add(isbns[i]);
49 }
50 }
51
52 if (badIsbns.size() > 0) {
53 throw new ValidatorException(
54 "Failed to retrieve ISBNs", badIsbns);
55 }
56 }
57
58 }