1 /*
2 * *************************************************************************************************************************************************************
3 *
4 * TheseFoolishThings: Miscellaneous utilities
5 * http://tidalwave.it/projects/thesefoolishthings
6 *
7 * Copyright (C) 2009 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
8 *
9 * *************************************************************************************************************************************************************
10 *
11 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
17 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18 *
19 * *************************************************************************************************************************************************************
20 *
21 * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22 * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23 *
24 * *************************************************************************************************************************************************************
25 */
26 package it.tidalwave.util;
27
28 import jakarta.annotation.Nonnull;
29 import java.time.format.DateTimeFormatter;
30 import java.time.format.FormatStyle;
31 import java.util.Locale;
32 import lombok.AccessLevel;
33 import lombok.NoArgsConstructor;
34
35 /***************************************************************************************************************************************************************
36 *
37 * A factory class for localized {@link DateTimeFormatter}s in various flavours, specified by the {@link FormatStyle}.
38 * This class is especially useful for migration to JDK 9+, where the default behaviour of
39 * {@code DateTimeFormatter.ofLocalizedDate/DateTime(...)} has changed.
40 *
41 * At the moment only locales for English and Italian are supported.
42 *
43 * @since 3.1-ALPHA-4
44 * @author Fabrizio Giudici
45 *
46 **************************************************************************************************************************************************************/
47 @NoArgsConstructor(access = AccessLevel.PRIVATE)
48 public final class LocalizedDateTimeFormatters
49 {
50 /***********************************************************************************************************************************************************
51 * Returns a formatter.
52 *
53 * @param style the style
54 * @param locale the locale
55 * @return the formatter
56 **********************************************************************************************************************************************************/
57 @Nonnull
58 public static DateTimeFormatter getDateTimeFormatterFor (@Nonnull final FormatStyle style,
59 @Nonnull final Locale locale)
60 {
61 final var resourceName = "dateTimeFormatterPattern." + style.name();
62 final var pattern = BundleUtilities.getMessage(LocalizedDateTimeFormatters.class, locale, resourceName);
63 return DateTimeFormatter.ofPattern(pattern).withLocale(locale);
64 }
65 }