38 lines
1.6 KiB
Java
38 lines
1.6 KiB
Java
package io.gitlab.jfronny.inceptum.util;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.util.*;
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public class DeepCloner {
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public static <T> T clone(T source) {
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try {
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return (T) cloneI(source);
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} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException e) {
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throw new RuntimeException("Could not clone object", e);
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}
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}
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private static Object cloneI(Object source) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
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if (source == null) return null;
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if (source instanceof String
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|| source instanceof Integer
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|| source instanceof Byte
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|| source instanceof Short
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|| source instanceof Double
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|| source instanceof Float)
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return source;
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if (source instanceof List<?> list) return List.copyOf(list);
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if (source instanceof Map<?, ?> map) return Map.copyOf(map);
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if (source instanceof Set<?> set) return new LinkedHashSet<>(set);
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if (source instanceof Date date) return new Date(date.getTime());
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Class<?> klazz = source.getClass();
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if (!klazz.getName().startsWith("io.gitlab.jfronny.inceptum.model"))
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throw new IllegalStateException("Default java classes must have special impls! (" + klazz.getName() + ")");
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Object instance = klazz.getConstructor().newInstance();
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for (Field field : klazz.getFields())
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field.set(instance, cloneI(field.get(source)));
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return instance;
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}
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}
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