001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.spring; 019 020 import org.apache.camel.spi.Injector; 021 import org.apache.camel.impl.ReflectionInjector; 022 import org.apache.commons.logging.Log; 023 import org.apache.commons.logging.LogFactory; 024 import org.springframework.context.ApplicationContext; 025 026 import java.util.Arrays; 027 028 /** 029 * A Spring implementation of {@link Injector} allowing Spring to be used to inject newly constructed type converters 030 * 031 * @version $Revision: 525537 $ 032 */ 033 public class SpringInjector extends ReflectionInjector { 034 private static final transient Log log = LogFactory.getLog(SpringInjector.class); 035 private final ApplicationContext applicationContext; 036 037 public SpringInjector(ApplicationContext applicationContext) { 038 this.applicationContext = applicationContext; 039 } 040 041 public Object newInstance(Class type) { 042 String[] names = applicationContext.getBeanNamesForType(type, true, true); 043 if (names != null) { 044 if (names.length == 1) { 045 // lets instantiate the single bean 046 return applicationContext.getBean(names[0]); 047 } 048 else if (names.length > 1) { 049 log.warn("Too many beans of type: " + type.getName() + " available: " + Arrays.asList(names) + " so ignoring Spring configuration"); 050 } 051 } 052 053 // lets instantiate the bean 054 Object answer = super.newInstance(type); 055 056 // TODO now lets inject spring... 057 return answer; 058 } 059 }