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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.validator.validators;
17  
18  import org.seasar.cubby.validator.MessageHelper;
19  import org.seasar.cubby.validator.ScalarFieldValidator;
20  import org.seasar.cubby.validator.ValidationContext;
21  
22  /**
23   * 指定した文字列と等しいかどうかを検証します。
24   * <p>
25   * デフォルトエラーメッセージキー:valid.equals
26   * </p>
27   * 
28   * @author agata
29   * @author baba
30   * @since 1.0.0
31   */
32  public class EqualsValidator implements ScalarFieldValidator {
33  
34  	/**
35  	 * メッセージヘルパ。
36  	 */
37  	private final MessageHelper messageHelper;
38  
39  	/**
40  	 * 対象文字列
41  	 */
42  	private final String value;
43  
44  	/**
45  	 * コンストラクタ
46  	 * 
47  	 * @param value
48  	 *            対象文字列
49  	 */
50  	public EqualsValidator(final String value) {
51  		this(value, "valid.equals");
52  	}
53  
54  	/**
55  	 * エラーメッセージキーを指定するコンストラクタ
56  	 * 
57  	 * @param value
58  	 * @param messageKey
59  	 */
60  	public EqualsValidator(final String value, final String messageKey) {
61  		this.value = value;
62  		this.messageHelper = new MessageHelper(messageKey);
63  	}
64  
65  	/**
66  	 * {@inheritDoc}
67  	 */
68  	public void validate(final ValidationContext context, final Object value) {
69  		if (!this.value.equals(value)) {
70  			context.addMessageInfo(this.messageHelper.createMessageInfo());
71  		}
72  	}
73  
74  }