org.onosproject.ui.lion

Class LionUtils

java.lang.Object

org.onosproject.ui.lion.LionUtils

public final class LionUtils
extends Object

Utility methods for dealing with Localization Bundles etc.

Note that each of the getBundledResource(java.lang.String) methods use a custom ResourceBundle.Control instance which reads in the input stream using UTF-8.

Method Summary

Modifier and Type	Method and Description
static ResourceBundle	getBundledResource(Class<?> c) This method takes a class and returns a ResourceBundle which is loaded from a properties file with the same base name as the class.
static ResourceBundle	getBundledResource(Class<?> c, String baseName) This method returns a ResourceBundle which is loaded from a properties file with the specified base name from the same package as the specified class.
static ResourceBundle	getBundledResource(String basename) This method takes a fully qualified name and returns a ResourceBundle which is loaded from a properties file with that base name.
static ResourceBundle	getBundledResource(String basename, Locale locale, ClassLoader classLoader) This method takes a fully qualified name and returns a ResourceBundle which is loaded from a properties file with that base name.
static Locale	localeFromString(String s) Parses the given string into language and country codes, and returns a Locale instance initialized with those parameters.
static Locale	setupRuntimeLocale() Sets the default locale, based on the Java properties shown below.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

localeFromString

public static Locale localeFromString(String s)

Parses the given string into language and country codes, and returns a Locale instance initialized with those parameters. For example:

     Locale locale = LionUtils.localeFromString("en_GB");
     locale.getLanguage();   // "en"
     locale.getCountry();    // "GB"

     locale = LionUtils.localeFromString("ru");
     locale.getLanguage();   // "ru"
     locale.getCountry();    // ""
 

Parameters:

s - the locale string

Returns:

a locale instance

setupRuntimeLocale

public static Locale setupRuntimeLocale()

Sets the default locale, based on the Java properties shown below.

   user.language
   user.country
 

It is expected that the host system will have set these properties appropriately. Note, however, that the default values can be overridden by use of the environment variable ONOS_LOCALE.

For example, to set the Locale to French-Canadian one can invoke (from the shell)...

 $ ONOS_LOCALE=fr_CA {command-to-invoke-onos} ...
 

Returns:

the runtime locale

getBundledResource

public static ResourceBundle getBundledResource(String basename)

This method takes a fully qualified name and returns a ResourceBundle which is loaded from a properties file with that base name.

For example, supposing the jar file contains:

 org/onosproject/util/example/SomeBundle.properties
 

Then, to correctly load the resource bundle associated with SomeBundle, call:

 String fqname = "org.onosproject.util.example.SomeBundle";
 ResourceBundle res = ResourceUtils.getBundledResource(fqname);
 

Note that no error is thrown if the properties file does not exist. This condition will not become apparent until you try and access a property from the bundle, at which time a MissingResourceException will be thrown.

Parameters:

basename - the (fully qualified) basename of the bundle properties file

Returns:

the associated resource bundle

getBundledResource

public static ResourceBundle getBundledResource(String basename,
                                                Locale locale,
                                                ClassLoader classLoader)

This method takes a fully qualified name and returns a ResourceBundle which is loaded from a properties file with that base name. The locale to use for bundle selection, and the class loader to use for the search path are also specified.

Parameters:

basename - the (fully qualified) basename of the bundle properties file

locale - the locale

classLoader - the class loader

Returns:

the appropriate resource bundle

getBundledResource

public static ResourceBundle getBundledResource(Class<?> c)

This method takes a class and returns a ResourceBundle which is loaded from a properties file with the same base name as the class. Note that both the class and the properties file(s) need to be in the same jar file.

For example, supposing the jar file contains:

 org/onosproject/util/example/SomeObject.class
 org/onosproject/util/example/SomeObject.properties
 

Then, to correctly load the resource bundle associated with SomeObject, call:

 ResourceBundle res = ResourceUtils.getBundledResource(SomeObject.class);
 

Note that no error is thrown if the properties file does not exist. This condition will not become apparent until you try and access a property from the bundle, at which time a MissingResourceException will be thrown.

Parameters:

c - the class

Returns:

the associated resource bundle

getBundledResource

public static ResourceBundle getBundledResource(Class<?> c,
                                                String baseName)

This method returns a ResourceBundle which is loaded from a properties file with the specified base name from the same package as the specified class. Note that both the class and the properties file(s) need to be in the same jar file.

For example, supposing the jar file contains:

 org/onosproject/util/example/SomeObject.class
 org/onosproject/util/example/DisplayStrings.properties
 

Then, to correctly load the resource bundle call:

 ResourceBundle res = ResourceUtils.getBundledResource(SomeObject.class,
                                                       "DisplayStrings");
 

Note that no error is thrown if the properties file does not exist. This condition will not become apparent until you try and access a property from the bundle, at which time a MissingResourceException will be thrown.

Parameters:

c - the class requesting the bundle

baseName - the base name of the resource bundle

Returns:

the associated resource bundle