| /* |
| * 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.ObjectUtils; |
| import org.apache.commons.lang3.Validate; |
| import org.apache.commons.lang3.exception.CloneFailedException; |
| import org.apache.commons.lang3.reflect.MethodUtils; |
| import org.apache.commons.proxy2.ObjectProvider; |
| import org.apache.commons.proxy2.exception.ObjectProviderException; |
| |
| /** |
| * Merely calls <code>clone()</code> (reflectively) on the given {@link Cloneable} object. |
| * |
| * @since 1.0 |
| */ |
| public class CloningProvider<T extends Cloneable> implements ObjectProvider<T>, Serializable |
| { |
| /** |
| * Serialization version |
| */ |
| private static final long serialVersionUID = 1L; |
| |
| //****************************************************************************************************************** |
| // Fields |
| //****************************************************************************************************************** |
| |
| private final T cloneable; |
| |
| //****************************************************************************************************************** |
| // Constructors |
| //****************************************************************************************************************** |
| |
| /** |
| * Constructs a provider which returns clone copies of the specified {@link Cloneable} object. |
| * |
| * @param cloneable |
| * the object to clone |
| */ |
| public CloningProvider(T cloneable) |
| { |
| Validate.notNull(cloneable, "Cloneable object cannot be null."); |
| Validate.isTrue(MethodUtils.getAccessibleMethod(cloneable.getClass(), "clone") != null, |
| String.format("Class %s does not override clone() method as public.", cloneable.getClass().getName())); |
| this.cloneable = cloneable; |
| } |
| |
| //****************************************************************************************************************** |
| // ObjectProvider Implementation |
| //****************************************************************************************************************** |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public T getObject() |
| { |
| try |
| { |
| return ObjectUtils.clone(cloneable); |
| } |
| catch (CloneFailedException e) { |
| throw new ObjectProviderException(e.getMessage(), e.getCause()); |
| } |
| } |
| |
| } |