Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultCallMeta.java @ 93:e27cf9c84eb8

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Unified imports. artifacts/trunk@849 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 28 Mar 2010 15:57:40 +0000
parents 730ff077a58c
children 933bbc9fc11f
rev   line source
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1 package de.intevation.artifactdatabase;
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2
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3 import de.intevation.artifacts.CallMeta;
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4 import de.intevation.artifacts.PreferredLocale;
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5
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6 import java.util.Locale;
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7
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8 /**
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9 * Default implementation of CallMeta. It provides a list of
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10 * preferred langauages and implements an intersection mechanism
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11 * to figure out the best matching language given a list of server
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12 * provided languages.
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13 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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14 */
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15 public class DefaultCallMeta
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16 implements CallMeta
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17 {
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18 /**
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19 * The list of preferred languages.
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20 */
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21 protected PreferredLocale [] languages;
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22
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23 /**
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24 * Default constructor.
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25 */
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26 public DefaultCallMeta() {
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27 }
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29 /**
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30 * Creates new DefaultCallMeta with a given list of languages.
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31 * @param languages The list of preferred languages.
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32 */
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33 public DefaultCallMeta(PreferredLocale [] languages) {
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34 this.languages = languages;
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35 }
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36
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37 public PreferredLocale [] getLanguages() {
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38 return languages;
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39 }
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40
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41 public Locale getPreferredLocale(Locale [] locales) {
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42 if (locales == null || locales.length == 0) {
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43 return null;
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44 }
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45
50
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46 Locale best = null;
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47 float quality = -Float.MAX_VALUE;
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48
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49 for (int i = 0; i < locales.length; ++i) {
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50 Locale wish = locales[i];
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51 String wishLanguage = wish.getLanguage();
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52
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53 for (int j = 0; j < languages.length; ++j) {
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54 PreferredLocale have = languages[j];
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55 Locale haveLocale = have.getLocale();
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56 if (haveLocale.getLanguage().equals(wishLanguage)) {
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57 float haveQuality = have.getQuality();
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58 if (haveQuality > quality) {
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59 quality = haveQuality;
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60 best = wish;
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61 }
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62 break; // Languages should not contain
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63 // same locale twice.
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64 }
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65 }
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66 }
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67
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68 return best == null
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69 ? locales[0]
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70 : best;
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71 }
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72 }
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73 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org