FileConverterTrim


1   
2   /*
3    * Copyright (c) 1998 - 2005 Versant Corporation
4    * All rights reserved. This program and the accompanying materials
5    * are made available under the terms of the Eclipse Public License v1.0
6    * which accompanies this distribution, and is available at
7    * http://www.eclipse.org/legal/epl-v10.html
8    *
9    * Contributors:
10   * Versant Corporation - initial API and implementation
11   */
12  package com.versant.core.jdbc.sql.conv;
13  
14  import com.versant.core.jdbc.JdbcConverter;
15  import com.versant.core.jdbc.JdbcTypeRegistry;
16  import com.versant.core.jdbc.metadata.JdbcColumn;
17  
18  import java.io.File  ;
19  
20  /**
21   * This converter converts java.io.File objects to and from SQL. It assumes
22   * that the File is stored in a CHAR column and trims leading and trailing
23   * blanks.
24   * @keep-all
25   */
26  public class FileConverterTrim extends TypeAsTrimStringConverterBase {
27  
28      public static class Factory extends NoArgJdbcConverterFactory {
29  
30          private FileConverterTrim converter;
31  
32          /**
33           * Create a converter for col using args as parameters. Return null if
34           * no converter is required.
35           */
36          public JdbcConverter createJdbcConverter(JdbcColumn col, Object   args,
37                  JdbcTypeRegistry jdbcTypeRegistry) {
38              if (converter == null) converter = new FileConverterTrim();
39              return converter;
40          }
41  
42      }
43  
44      /**
45       * Create an instance of our type from a String.
46       * @param s String to use (never null)
47       */
48      protected Object   fromString(String   s) {
49          return new File  (s);
50      }
51  
52      /**
53       * Get the type of our expected value objects (e.g. java.util.Locale
54       * for a converter for Locale's).
55       */
56      public Class   getValueType() {
57          return File  .class;
58      }
59  
60  }
61  
62
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