76 Zeilen
2.5 KiB
Java
76 Zeilen
2.5 KiB
Java
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/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2024 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.persistent;
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import lombok.experimental.UtilityClass;
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@UtilityClass
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public class Reflection {
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public static class Field<C, T> {
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private final java.lang.reflect.Field f;
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public Field(Class<C> target, String name) {
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try {
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f = target.getDeclaredField(name);
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f.setAccessible(true);
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} catch (NoSuchFieldException e) {
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throw new IllegalArgumentException("Cannot find field with name " + name, e);
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}
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}
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public T get(C target) {
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try {
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return (T) f.get(target);
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} catch (IllegalAccessException e) {
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throw new IllegalArgumentException("Cannot access reflection.", e);
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}
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}
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public void set(C target, T value) {
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try {
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f.set(target, value);
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} catch (IllegalAccessException e) {
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throw new IllegalArgumentException("Cannot access reflection.", e);
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}
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}
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}
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public static class Method<C> {
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private final java.lang.reflect.Method m;
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public Method(Class<C> clazz, String methodName, Class<?>... params) {
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try {
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m = clazz.getDeclaredMethod(methodName, params);
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m.setAccessible(true);
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} catch (NoSuchMethodException e) {
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throw new IllegalArgumentException("Cannot find method with name " + methodName, e);
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}
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}
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public Object invoke(C target, Object... arguments) {
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try {
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return m.invoke(target, arguments);
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} catch (Exception e) {
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throw new IllegalArgumentException("Cannot invoke method " + m, e);
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}
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}
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}
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}
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