001/*
002 * Copyright 2023 the original author or authors.
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * https://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package de.cuioss.test.valueobjects.objects.impl;
017
018import static de.cuioss.test.valueobjects.objects.impl.ExceptionHelper.extractCauseMessageFromThrowable;
019
020import java.lang.reflect.InvocationTargetException;
021
022import de.cuioss.test.valueobjects.objects.ObjectInstantiator;
023import lombok.Getter;
024import lombok.NonNull;
025import lombok.RequiredArgsConstructor;
026import lombok.ToString;
027
028/**
029 * Instantiator for any class that provide a public accessible default
030 * constructor
031 *
032 * @author Oliver Wolff
033 * @param <T> identifying the type of object to be instantiated
034 */
035@RequiredArgsConstructor
036@ToString
037public class DefaultInstantiator<T> implements ObjectInstantiator<T> {
038
039    @NonNull
040    @Getter
041    private final Class<T> targetClass;
042
043    /**
044     * @return a newly created instance
045     */
046    @Override
047    public T newInstance() {
048        try {
049            return targetClass.getDeclaredConstructor().newInstance();
050        } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException
051                | NoSuchMethodException | SecurityException e) {
052            throw new AssertionError("Unable to instantiate class due to " + extractCauseMessageFromThrowable(e), e);
053        }
054    }
055
056}