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feat: Add LocaleExtractor.Builder (#18)
* Add LocaleExtractor.Builder * fix build
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75 changes: 75 additions & 0 deletions
75
...lations-core/src/main/java/org/incendo/cloud/translations/LocaleExtractorBuilderImpl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| // | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2024 Incendo | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
| // | ||
| package org.incendo.cloud.translations; | ||
|
|
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| import io.leangen.geantyref.GenericTypeReflector; | ||
| import io.leangen.geantyref.TypeToken; | ||
| import java.lang.reflect.Type; | ||
| import java.util.LinkedList; | ||
| import java.util.List; | ||
| import java.util.Locale; | ||
| import java.util.Objects; | ||
| import java.util.function.Function; | ||
| import org.checkerframework.checker.nullness.qual.NonNull; | ||
| import org.checkerframework.checker.nullness.qual.Nullable; | ||
| import org.incendo.cloud.type.tuple.Pair; | ||
|
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| final class LocaleExtractorBuilderImpl<C> implements LocaleExtractor.Builder<C> { | ||
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| private @NonNull LocaleExtractor<C> fallback = $ -> Locale.getDefault(); | ||
| private final LinkedList<Pair<Type, Function<Object, @Nullable Locale>>> extractors = new LinkedList<>(); | ||
|
|
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| @Override | ||
| public LocaleExtractor.@NonNull Builder<C> fallback(final @NonNull LocaleExtractor<C> fallback) { | ||
| this.fallback = Objects.requireNonNull(fallback); | ||
| return this; | ||
| } | ||
|
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| @SuppressWarnings({"unchecked", "rawtypes"}) | ||
| @Override | ||
| public <S extends C> LocaleExtractor.@NonNull Builder<C> senderType( | ||
| final @NonNull TypeToken<S> senderType, | ||
| final @NonNull Function<S, @Nullable Locale> extractor | ||
| ) { | ||
| this.extractors.addFirst(Pair.of(senderType.getType(), (Function) extractor)); | ||
| return this; | ||
| } | ||
|
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| @Override | ||
| public @NonNull LocaleExtractor<C> build() { | ||
| final LocaleExtractor<C> fallback = this.fallback; | ||
| final List<Pair<Type, Function<Object, Locale>>> extractors = List.copyOf(this.extractors); | ||
| return recipient -> { | ||
| for (final Pair<Type, Function<Object, Locale>> pair : extractors) { | ||
| if (GenericTypeReflector.isSuperType(pair.first(), recipient.getClass())) { | ||
| final @Nullable Locale apply = pair.second().apply(recipient); | ||
| if (apply != null) { | ||
| return apply; | ||
| } | ||
| } | ||
| } | ||
| return fallback.extract(recipient); | ||
| }; | ||
| } | ||
| } |
60 changes: 60 additions & 0 deletions
60
...lations-core/src/test/java/org/incendo/cloud/translations/LocaleExtractorBuilderTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| // | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2024 Incendo | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
| // | ||
| package org.incendo.cloud.translations; | ||
|
|
||
| import java.util.Locale; | ||
| import org.junit.jupiter.api.Test; | ||
|
|
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| import static com.google.common.truth.Truth.assertThat; | ||
|
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| @SuppressWarnings("checkstyle:VisibilityModifier") | ||
| class LocaleExtractorBuilderTest { | ||
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| @Test | ||
| void testSimple() { | ||
| final LocaleExtractor<GenericSender> build = LocaleExtractor.<GenericSender>builder() | ||
| .fallback(Locale.FRENCH) | ||
| .senderType(ChineseSender.class, s -> s.locale) | ||
| .senderType(GermanSender.class, s -> s.locale) | ||
| .build(); | ||
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| assertThat(build.extract(new GenericSender())).isEqualTo(Locale.FRENCH); | ||
| assertThat(build.extract(new ChineseSender())).isEqualTo(Locale.CHINESE); | ||
| assertThat(build.extract(new GermanSender())).isEqualTo(Locale.GERMAN); | ||
| } | ||
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| static class GenericSender { | ||
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| } | ||
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| static class ChineseSender extends GenericSender { | ||
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| final Locale locale = Locale.CHINESE; | ||
| } | ||
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| static class GermanSender extends GenericSender { | ||
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| final Locale locale = Locale.GERMAN; | ||
| } | ||
| } |