001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util;
018
019import org.apache.camel.IsSingleton;
020import org.apache.camel.spi.Injector;
021
022/**
023 * A simple implementation of {@link Injector} which just uses reflection to
024 * instantiate new objects using their zero argument constructor. For more
025 * complex implementations try the Spring or Guice implementations.
026 * 
027 * @version 
028 */
029public class ReflectionInjector implements Injector {
030
031    public <T> T newInstance(Class<T> type) {
032        return ObjectHelper.newInstance(type);
033    }
034
035    public <T> T newInstance(Class<T> type, Object instance) {
036        if (instance instanceof IsSingleton) {
037            boolean singleton = ((IsSingleton) instance).isSingleton();
038            if (singleton) {
039                return type.cast(instance);
040            }
041        }
042        return newInstance(type);
043    }
044
045    @Override
046    public boolean supportsAutoWiring() {
047        return false;
048    }
049}