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1   /*
2    * Copyright 2004-2009 the Seasar Foundation and the Others.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific language
14   * governing permissions and limitations under the License.
15   */
16  package org.seasar.cubby.plugins.spring.spi;
17  
18  import org.seasar.cubby.spi.ContainerProvider;
19  import org.seasar.cubby.spi.container.Container;
20  import org.seasar.cubby.spi.container.LookupException;
21  import org.springframework.beans.factory.BeanFactoryUtils;
22  import org.springframework.context.ApplicationContext;
23  import org.springframework.context.ApplicationContextAware;
24  
25  /**
26   * {@link ApplicationContext} による {@link Container} の実装を提供します。
27   * 
28   * @author suzuki-kei
29   * @author someda
30   */
31  public class SpringContainerProvider implements ContainerProvider,
32  		ApplicationContextAware {
33  
34  	/** コンテナ。 */
35  	private Container container;
36  
37  	/**
38  	 * {@inheritDoc}
39  	 */
40  	public Container getContainer() {
41  		return container;
42  	}
43  
44  	/**
45  	 * アプリケーションコンテキストを設定します。
46  	 * 
47  	 * @param applicationContext
48  	 *            アプリケーションコンテキスト
49  	 */
50  	public void setApplicationContext(
51  			final ApplicationContext applicationContext) {
52  		this.container = new SpringContainerImpl(applicationContext);
53  	}
54  
55  	/**
56  	 * {@link ApplicationContext} による {@link Container} の実装です。
57  	 */
58  	private static class SpringContainerImpl implements Container {
59  
60  		private final ApplicationContext applicationContext;
61  
62  		public SpringContainerImpl(final ApplicationContext applicationContext) {
63  			this.applicationContext = applicationContext;
64  		}
65  
66  		public <T> T lookup(final Class<T> type) throws LookupException {
67  			String[] names = BeanFactoryUtils
68  					.beanNamesForTypeIncludingAncestors(applicationContext,
69  							type);
70  			if (names == null || names.length < 1) {
71  				throw new LookupException(type + " component not found.");
72  			}
73  			return type.cast(applicationContext.getBean(names[0], type));
74  		}
75  
76  	}
77  
78  }