001/*
002 * Copyright 2015-2018 Transmogrify 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 static java.lang.String.format;
020
021/**
022 * Basic implementation of {@link InstanceProvider} which uses {@link Class#newInstance()}.
023 * 
024 * @author <a href="http://revetkn.com">Mark Allen</a>
025 * @since 1.0.0
026 */
027public class DefaultInstanceProvider implements InstanceProvider {
028  @Override
029  public <T> T provide(Class<T> instanceClass) {
030    try {
031      return instanceClass.newInstance();
032    } catch (Exception e) {
033      throw new RuntimeException(format(
034        "Unable to create an instance of %s. Please verify that %s has a public no-argument constructor",
035        instanceClass, instanceClass.getSimpleName()), e);
036    }
037  }
038}