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Java > Open Source Codes > org > webdocwf > util > i18njdbc > I18nDriver


1 /**
2     Copyright (C) 2002-2003 Together
3
4     This library is free software; you can redistribute it and/or
5     modify it under the terms of the GNU Lesser General Public
6     License as published by the Free Software Foundation; either
7     version 2.1 of the License, or (at your option) any later version.
8
9     This library is distributed in the hope that it will be useful,
10     but WITHOUT ANY WARRANTY; without even the implied warranty of
11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12     Lesser General Public License for more details.
13
14     You should have received a copy of the GNU Lesser General Public
15     License along with this library; if not, write to the Free Software
16     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
18 */
19
20 package org.webdocwf.util.i18njdbc;
21
22 import java.sql.*;
23 import java.util.Properties JavaDoc;
24 import java.util.StringTokenizer JavaDoc;
25 import java.io.File JavaDoc;
26
27 /**
28  * This class implements the Driver interface for the I18nJdbc driver.
29  *
30  * @author Zoran Milakovic
31  * @author Zeljko Kovacevic
32  */
33
34 public class I18nDriver implements Driver
35 {
36
37 //PARAMETER NAMES
38
39
40 //ZK added properties for i18nJdbc driver
41 public static final String JavaDoc CHARSET = "charset";
42   public static final String JavaDoc NAMECOLUMN = "nameColumn";
43   public static final String JavaDoc VALUECOLUMN = "valueColumn";
44   public static final String JavaDoc CREATE="create";
45   public static final String JavaDoc FILE_EXTENSION = "fileExtension";
46 //DEFAULT VALUES
47
48 //ZK added this
49 public static final String JavaDoc DEFAULT_CHARSET = "UTF-8";
50     public static final String JavaDoc DEFAULT_NAMECOLUMN = "name";
51     public static final String JavaDoc DEFAULT_VALUECOLUMN = "value";
52     public static final boolean DEFAULT_CREATE = false;
53     public static final String JavaDoc DEFAULT_EXTENSION = ".properties";
54 //data types
55
56   public static final String JavaDoc VARCHAR_TYPE = "VARCHAR";
57   public static String JavaDoc FILE_NAME_EXT = "extension";
58   private final static String JavaDoc URL_PREFIX = "jdbc:webdocwf:i18n:";
59   private Properties JavaDoc info = null;
60
61   /* If set to true, driver will log into i18ndriver.log file, in working directory */
62   private static boolean ENABLE_LOG = false;
63   
64   /* If set to true, driver will show stack traces and other debug info */
65     public static boolean DEBUG = false;
66
67   /**
68    *Gets the propertyInfo attribute of the I18nJdbc object
69    *
70    * @param url Description of Parameter
71    * @param info Description of Parameter
72    * @return The propertyInfo value
73    * @exception SQLException Description of Exception
74    * @since
75    */
76   public DriverPropertyInfo[] getPropertyInfo(String JavaDoc url, Properties JavaDoc info)
77        throws SQLException
78   {
79     return new DriverPropertyInfo[0];
80   }
81
82
83   /**
84    *Gets the majorVersion attribute of the I18nJdbc object
85    *
86    * @return The majorVersion value
87    * @since
88    */
89   public int getMajorVersion()
90   {
91     return 1;
92   }
93
94
95   /**
96    *Gets the minorVersion attribute of the I18nJdbc object
97    *
98    * @return The minorVersion value
99    * @since
100    */
101   public int getMinorVersion()
102   {
103     return 0;
104   }
105
106
107   /**
108    *Description of the Method
109    *
110    * @param url Description of Parameter
111    * @param info Description of Parameter
112    * @return Description of the Returned Value
113    * @exception SQLException Description of Exception
114    * @since
115    */
116   public Connection connect(String JavaDoc url, Properties JavaDoc info) throws SQLException
117   {
118     DriverManager.println("i18nJdbc - I18nDriver:connect() - url=" + url);
119     // check for correct url
120 if (!url.startsWith(URL_PREFIX))
121     {
122       return null;
123     }
124     // get filepath from url
125 String JavaDoc filePath = url.substring(URL_PREFIX.length());
126     String JavaDoc filePathAll = filePath;
127     StringTokenizer JavaDoc st = new StringTokenizer JavaDoc( filePath , ";" );
128     
129     //System.out.println("filePathAll="+filePathAll);
130
131     filePath = st.nextToken();
132     if (!filePath.endsWith(File.separator))
133     {
134       filePath += File.separator;
135     }
136     DriverManager.println("i18nJdbc - i18nDriver:connect() - filePath=" + filePath);
137     return new I18nConnection(filePathAll, info);
138   }
139
140
141   /**
142    * Description of the Method
143    *
144    * @param url Description of Parameter
145    * @return Description of the Returned Value
146    * @exception SQLException Description of Exception
147    * @since
148    */
149   public boolean acceptsURL(String JavaDoc url) throws SQLException
150   {
151     DriverManager.println("I18nJdbc - I18nDriver:accept() - url=" + url);
152     return url.startsWith(URL_PREFIX);
153   }
154
155
156   /**
157    *Description of the Method
158    *
159    * @return Description of the Returned Value
160    * @since
161    */
162   public boolean jdbcCompliant()
163   {
164     return false;
165   }
166   // This static block inits the driver when the class is loaded by the JVM.
167 static
168   {
169     try
170     {
171       java.sql.DriverManager.registerDriver(new I18nDriver());
172     }
173     catch (SQLException e)
174     {
175       throw new RuntimeException JavaDoc(
176           "FATAL ERROR: Could not initialise i18n driver ! Message was: "
177            + e.getMessage());
178     }
179   }
180
181   public static void log( String JavaDoc message) {
182     if ( I18nDriver.ENABLE_LOG ) {
183       try {
184         File JavaDoc file = new File JavaDoc("i18ndriver.log");
185         if (!file.exists())
186           file.createNewFile();
187         java.io.RandomAccessFile JavaDoc fileLogr = new java.io.RandomAccessFile JavaDoc(file,
188             "rw");
189         fileLogr.seek(fileLogr.length());
190         fileLogr.writeBytes("I18nJdbc, "+message + "\r\n");
191         fileLogr.close();
192       }
193       catch (Exception JavaDoc ex) {
194         ex.printStackTrace();
195       }
196     }
197   }
198
199 }
200
201
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