001/*
002 * Copyright 2015-2022 Transmogrify LLC, 2022-2023 Revetware LLC.
003 *
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 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
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 */
016
017package com.pyranid;
018
019import javax.annotation.Nonnull;
020import javax.annotation.concurrent.ThreadSafe;
021
022import static java.lang.String.format;
023import static java.util.Objects.requireNonNull;
024
025/**
026 * Basic implementation of {@link InstanceProvider}.
027 *
028 * @author <a href="https://www.revetkn.com">Mark Allen</a>
029 * @since 1.0.0
030 */
031@ThreadSafe
032public class DefaultInstanceProvider implements InstanceProvider {
033        @Override
034        @Nonnull
035        public <T> T provide(@Nonnull StatementContext<T> statementContext,
036                                                                                         @Nonnull Class<T> instanceType) {
037                requireNonNull(statementContext);
038                requireNonNull(instanceType);
039
040                try {
041                        return instanceType.getDeclaredConstructor().newInstance();
042                } catch (Exception e) {
043                        throw new RuntimeException(format(
044                                        "Unable to create an instance of %s. Please verify that %s has a public no-argument constructor",
045                                        instanceType, instanceType.getSimpleName()), e);
046                }
047        }
048}