kopia lustrzana https://github.com/onthegomap/planetiler
44 wiersze
1.7 KiB
Java
44 wiersze
1.7 KiB
Java
package com.onthegomap.planetiler.util;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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/**
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* A {@link com.ibm.icu.text.Transliterator} that does not share any static data with other thread local
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* transliterators.
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* <p>
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* By default, {@link com.ibm.icu.text.Transliterator} synchronizes on static data during transliteration, which results
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* in contention between threads when transliterating many strings in parallel. Separate instances of this class can be
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* used across different threads in order to transliterate without contention.
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*/
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public class ThreadLocalTransliterator {
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private final ClassLoader classLoader = DuplicateClassLoader.duplicateClassesWithPrefix("com.ibm.icu");
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/**
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* Returns a {@link com.ibm.icu.text.Transliterator} for {@code id} that does not share any data with transliterators
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* on other threads.
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*/
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public TransliteratorInstance getInstance(String id) {
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try {
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Class<?> cls = classLoader.loadClass("com.ibm.icu.text.Transliterator");
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Method getInstance = cls.getMethod("getInstance", String.class);
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Object t = getInstance.invoke(null, id);
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Method transform = cls.getMethod("transliterate", String.class);
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return str -> {
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try {
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return (String) transform.invoke(t, str);
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} catch (IllegalAccessException | InvocationTargetException e) {
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throw new IllegalStateException(e);
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}
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};
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} catch (ClassNotFoundException | InvocationTargetException | NoSuchMethodException | IllegalAccessException e) {
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throw new IllegalStateException(e);
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}
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}
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@FunctionalInterface
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public interface TransliteratorInstance {
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String transliterate(String input);
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}
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}
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