| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.proxy2.provider; |
| |
| import java.io.Serializable; |
| |
| import org.apache.commons.lang3.Validate; |
| import org.apache.commons.proxy2.ObjectProvider; |
| import org.apache.commons.proxy2.exception.ObjectProviderException; |
| |
| /** |
| * Uses <code>Class.newInstance()</code> to instantiate an object. |
| * |
| * @since 1.0 |
| */ |
| public class BeanProvider<T> implements ObjectProvider<T>, Serializable |
| { |
| /** Serialization version */ |
| private static final long serialVersionUID = 1L; |
| |
| //****************************************************************************************************************** |
| // Fields |
| //****************************************************************************************************************** |
| |
| private final Class<? extends T> beanClass; |
| |
| //****************************************************************************************************************** |
| // Constructors |
| //****************************************************************************************************************** |
| |
| /** |
| * Constructs a provider which instantiates objects of the specified bean class. |
| * |
| * @param beanClass |
| * the bean class |
| */ |
| public BeanProvider(Class<? extends T> beanClass) |
| { |
| Validate.notNull(beanClass, "Bean class cannot be null."); |
| this.beanClass = beanClass; |
| } |
| |
| //****************************************************************************************************************** |
| // ObjectProvider Implementation |
| //****************************************************************************************************************** |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public T getObject() |
| { |
| try |
| { |
| return beanClass.newInstance(); |
| } |
| catch (InstantiationException e) |
| { |
| throw new ObjectProviderException(e, "%s is not concrete.", beanClass); |
| } |
| catch (IllegalAccessException e) |
| { |
| throw new ObjectProviderException(e, "Constructor for %s is not accessible.", beanClass); |
| } |
| } |
| } |