Default locale picker that uses a comma separated list of locales in the servlet init parameters to determine the set of locales that are supported by the application. Then at request time matches the user's preference order list as specified by the headers included in the request until it finds one of those locales in the system list. If a match cannot be found, the first locale in the system list will be picked. If there is no list of configured locales then the picker will default the list to a one entry list containing the system locale.
Locales are hierarchical, with up to three levels designating language, country and variant. Only the first level (language) is required. To provide the best match possible the DefaultLocalePicker tracks the one-level matches, two-level matches and three-level matches. If a three level match is found, it will be returned. If not the first two-level match will be returned if one was found. If not, the first one-level match will be returned. If not even a one-level match is found, the first locale supported by the system is returned.
@author Tim Fennell | |
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