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1   /*
2    * Copyright 2004-2008 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.interceptor;
17  
18  import static org.seasar.cubby.interceptor.InterceptorUtils.getAction;
19  import static org.seasar.cubby.interceptor.InterceptorUtils.getActionClass;
20  import static org.seasar.cubby.interceptor.InterceptorUtils.getMethod;
21  
22  import java.lang.reflect.Method;
23  
24  import javax.servlet.http.HttpServletRequest;
25  
26  import org.aopalliance.intercept.MethodInterceptor;
27  import org.aopalliance.intercept.MethodInvocation;
28  import org.seasar.cubby.action.Action;
29  import org.seasar.cubby.validator.ValidationException;
30  import org.seasar.cubby.validator.ValidationProcessor;
31  
32  /**
33   * 入力検証を行います。
34   * 
35   * @author agata
36   * @author baba
37   * @since 1.0.0
38   */
39  public class ValidationInterceptor implements MethodInterceptor {
40  
41  	/** 入力検証処理。 */
42  	private ValidationProcessor validationProcessor;
43  
44  	/** リクエスト。 */
45  	private HttpServletRequest request;
46  
47  	/**
48  	 * インスタンス化します。
49  	 */
50  	public ValidationInterceptor() {
51  	}
52  
53  	/**
54  	 * 入力検証処理を設定します。
55  	 * 
56  	 * @param validationProcessor
57  	 *            入力検証処理
58  	 */
59  	public void setValidationProcessor(
60  			final ValidationProcessor validationProcessor) {
61  		this.validationProcessor = validationProcessor;
62  	}
63  
64  	/**
65  	 * リクエストを設定します。
66  	 * 
67  	 * @param request
68  	 *            リクエスト
69  	 */
70  	public void setRequest(final HttpServletRequest request) {
71  		this.request = request;
72  	}
73  
74  	/**
75  	 * {@inheritDoc}
76  	 * <p>
77  	 * メソッドの実行前に入力検証を実行します。
78  	 * </p>
79  	 */
80  	public Object invoke(final MethodInvocation invocation) throws Throwable {
81  		final Action action = getAction(invocation);
82  		final Class<? extends Action> actionClass = getActionClass(invocation);
83  		final Method method = getMethod(invocation);
84  		try {
85  			validationProcessor.process(request, action, actionClass, method);
86  			return invocation.proceed();
87  		} catch (final ValidationException e) {
88  			return validationProcessor.handleValidationException(e, request,
89  					action, method);
90  		}
91  	}
92  
93  }