Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/resources/Resources.java @ 3814:8083f6384023
merged flys-artifacts/pre2.6-2012-01-04
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:14:56 +0200 |
| parents | e0fec407a280 |
| children | 2898b1ff6013 |
comparison
equal
deleted
inserted
replaced
| 1491:2a00f4849738 | 3814:8083f6384023 |
|---|---|
| 1 package de.intevation.flys.artifacts.resources; | |
| 2 | |
| 3 import java.text.MessageFormat; | |
| 4 import java.util.Locale; | |
| 5 import java.util.MissingResourceException; | |
| 6 import java.util.ResourceBundle; | |
| 7 | |
| 8 import org.apache.log4j.Logger; | |
| 9 | |
| 10 import de.intevation.artifacts.CallMeta; | |
| 11 | |
| 12 /** | |
| 13 * This class provides methods for i18n. | |
| 14 * | |
| 15 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 16 */ | |
| 17 public class Resources { | |
| 18 | |
| 19 /** The logger that is used in this class.*/ | |
| 20 private static Logger logger = Logger.getLogger(Resources.class); | |
| 21 | |
| 22 /** The singleton instance.*/ | |
| 23 private static Resources INSTANCE; | |
| 24 | |
| 25 /** The locales supported by this server.*/ | |
| 26 protected Locale[] locales; | |
| 27 | |
| 28 /** | |
| 29 * No instance of this class is necessary. | |
| 30 */ | |
| 31 private Resources() { | |
| 32 } | |
| 33 | |
| 34 | |
| 35 /** | |
| 36 * Returns the locales supported by this server. | |
| 37 * | |
| 38 * @return the supported locales. | |
| 39 */ | |
| 40 public Locale[] getLocales() { | |
| 41 if (locales == null) { | |
| 42 readLocales(); | |
| 43 } | |
| 44 | |
| 45 return locales; | |
| 46 } | |
| 47 | |
| 48 | |
| 49 /** | |
| 50 * Read the locales configured for this server. | |
| 51 */ | |
| 52 protected void readLocales() { | |
| 53 // TODO IMPLEMENT ME | |
| 54 | |
| 55 locales = new Locale[2]; | |
| 56 locales[0] = Locale.GERMANY; | |
| 57 locales[1] = Locale.ENGLISH; | |
| 58 } | |
| 59 | |
| 60 | |
| 61 public static Locale getLocale(CallMeta meta) { | |
| 62 if (INSTANCE == null) { | |
| 63 INSTANCE = new Resources(); | |
| 64 } | |
| 65 | |
| 66 Locale[] locales = INSTANCE.getLocales(); | |
| 67 return meta.getPreferredLocale(locales); | |
| 68 } | |
| 69 | |
| 70 | |
| 71 /** | |
| 72 * This method returns the translated value for <i>key</i> or <i>def</i> if | |
| 73 * <i>key</i> is not existing in the resource bundle. | |
| 74 * | |
| 75 * @param meta The CallMeta object of the request that contains the | |
| 76 * preferred locale. | |
| 77 * @param key The key that should be translated. | |
| 78 * @param def A default value that is returned, if <i>key</i> was not found. | |
| 79 * | |
| 80 * @return the translated message. | |
| 81 */ | |
| 82 public static String getMsg(CallMeta meta, String key, String def) { | |
| 83 if (INSTANCE == null) { | |
| 84 INSTANCE = new Resources(); | |
| 85 } | |
| 86 | |
| 87 Locale[] locales = INSTANCE.getLocales(); | |
| 88 Locale locale = meta.getPreferredLocale(locales); | |
| 89 | |
| 90 return getMsg(locale, key, def); | |
| 91 } | |
| 92 | |
| 93 | |
| 94 /** | |
| 95 * Returns a translated message based on a template specified by <i>key</i> | |
| 96 * that has necessary values to be filled in. | |
| 97 * | |
| 98 * @param meta The CallMeta object. | |
| 99 * @param key The key of the template in the resource bundle. | |
| 100 * @param def the default value if no template was found with <i>key</i>. | |
| 101 * @param args The arguments that are necessary for the template. | |
| 102 * | |
| 103 * @return a translated string. | |
| 104 */ | |
| 105 public static String getMsg( | |
| 106 CallMeta meta, | |
| 107 String key, | |
| 108 String def, | |
| 109 Object[] args) | |
| 110 { | |
| 111 String template = getMsg(meta, key, null); | |
| 112 | |
| 113 if (template == null) { | |
| 114 return def; | |
| 115 } | |
| 116 | |
| 117 return MessageFormat.format(template, args); | |
| 118 } | |
| 119 | |
| 120 | |
| 121 /** | |
| 122 * This method returns the translated value for <i>key</i> or <i>def</i> if | |
| 123 * <i>key</i> is not existing in the resource bundle. | |
| 124 * | |
| 125 * @param locale The locale. | |
| 126 * @param key The key that should be translated. | |
| 127 * @param def A default value that is returned, if <i>key</i> was not found. | |
| 128 * | |
| 129 * @return the translated message. | |
| 130 */ | |
| 131 public static String getMsg(Locale locale, String key, String def) { | |
| 132 ResourceBundle bundle = ResourceBundle.getBundle("messages", locale); | |
| 133 | |
| 134 try { | |
| 135 return bundle.getString(key); | |
| 136 } | |
| 137 catch (MissingResourceException mre) { | |
| 138 logger.warn("No message found for key: " + key); | |
| 139 | |
| 140 return def; | |
| 141 } | |
| 142 } | |
| 143 } | |
| 144 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |