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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.converter.impl;
17  
18  import java.text.DateFormat;
19  import java.text.ParseException;
20  
21  import org.seasar.cubby.converter.ConversionHelper;
22  
23  /**
24   * {@link java.sql.Timestamp}への変換を行うコンバータです。
25   * <p>
26   * 変換元のオブジェクトの文字列表現をフォーマットに従って{@link java.sql.Timestamp}に変換した結果を変換先とします。
27   * </p>
28   * 
29   * @author baba
30   * @since 1.1.0
31   */
32  public class SqlTimestampConverter extends AbstractConverter {
33  
34  	/**
35  	 * {@inheritDoc}
36  	 */
37  	public Class<?> getObjectType() {
38  		return java.sql.Timestamp.class;
39  	}
40  
41  	/**
42  	 * {@inheritDoc}
43  	 */
44  	public Object convertToObject(final Object value,
45  			final Class<?> objectType, ConversionHelper helper) {
46  		if (value == null) {
47  			return null;
48  		}
49  		final DateFormat dateFormat = helper.getFormatPattern()
50  				.getTimestampFormat();
51  		return toTimestamp((String) value, dateFormat);
52  	}
53  
54  	/**
55  	 * 文字列を{@link java.sql.Timestamp}に変換して返します。
56  	 * 
57  	 * @param date
58  	 *            変換元のオブジェクトの文字列表現
59  	 * @param dateFormat
60  	 *            フォーマット
61  	 * @return 変換した結果の{@link java.sql.Timestamp}
62  	 */
63  	protected java.sql.Timestamp toTimestamp(final String date,
64  			final DateFormat dateFormat) {
65  		if (date == null || date.length() == 0) {
66  			return null;
67  		}
68  		try {
69  			return new java.sql.Timestamp(dateFormat.parse(date).getTime());
70  		} catch (final ParseException e) {
71  			return null;
72  		}
73  	}
74  
75  	/**
76  	 * {@inheritDoc}
77  	 */
78  	public String convertToString(final Object value, ConversionHelper helper) {
79  		if (value == null) {
80  			return null;
81  		}
82  		final DateFormat formatter = helper.getFormatPattern()
83  				.getTimestampFormat();
84  		return formatter.format((java.sql.Timestamp) value);
85  	}
86  
87  }