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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   */
31  public class EqualsValidator implements ScalarFieldValidator {
32  
33  	/**
34  	 * メッセージヘルパ。
35  	 */
36  	private final MessageHelper messageHelper;
37  
38  	/**
39  	 * 対象文字列
40  	 */
41  	private final String value;
42  
43  	/**
44  	 * コンストラクタ
45  	 * 
46  	 * @param value
47  	 *            対象文字列
48  	 */
49  	public EqualsValidator(final String value) {
50  		this(value, "valid.equals");
51  	}
52  
53  	/**
54  	 * エラーメッセージキーを指定するコンストラクタ
55  	 * 
56  	 * @param value
57  	 * @param messageKey
58  	 */
59  	public EqualsValidator(final String value, final String messageKey) {
60  		this.value = value;
61  		this.messageHelper = new MessageHelper(messageKey);
62  	}
63  
64  	public void validate(final ValidationContext context, final Object value) {
65  		if (!this.value.equals(value)) {
66  			context.addMessageInfo(this.messageHelper.createMessageInfo());
67  		}
68  	}
69  
70  }