1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.tools.sql;
24  
25  import com.liferay.portal.kernel.util.FileUtil;
26  import com.liferay.portal.kernel.util.StringUtil;
27  
28  import java.io.BufferedReader;
29  import java.io.File;
30  import java.io.IOException;
31  import java.io.StringReader;
32  
33  /**
34   * <a href="SQLServerUtil.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Alexander Chow
37   * @author Sandeep Soni
38   * @author Ganesh Ram
39   *
40   */
41  public class SQLServerUtil extends DBUtil {
42  
43      public static DBUtil getInstance() {
44          return _instance;
45      }
46  
47      public String buildSQL(String template) throws IOException {
48          template = convertTimestamp(template);
49          template = replaceTemplate(template, getTemplate());
50  
51          template = reword(template);
52          template = StringUtil.replace(template, "\ngo;\n", "\ngo\n");
53          template = StringUtil.replace(
54              template,
55              new String[] {"\\\\", "\\'", "\\\"", "\\n", "\\r"},
56              new String[] {"\\", "''", "\"", "\n", "\r"});
57  
58          return template;
59      }
60  
61      public boolean isSupportsAlterColumnName() {
62  
63          // We actually have a way of getting SQL Server to alter column names.
64          // The problem is that it will break in scenarios where the column has
65          // an index. To make things simpler, we disallow altering of column
66          // names for SQL Server.
67  
68          return _SUPPORTS_ALTER_COLUMN_NAME;
69      }
70  
71      public boolean isSupportsAlterColumnType() {
72          return _SUPPORTS_ALTER_COLUMN_TYPE;
73      }
74  
75      protected SQLServerUtil() {
76          super(TYPE_SQLSERVER);
77      }
78  
79      protected void buildCreateFile(String databaseName, boolean minimal)
80          throws IOException {
81  
82          String minimalSuffix = getMinimalSuffix(minimal);
83  
84          File file = new File(
85              "../sql/create" + minimalSuffix + "/create" + minimalSuffix +
86                  "-sql-server.sql");
87  
88          StringBuilder sb = new StringBuilder();
89  
90          sb.append("drop database " + databaseName + ";\n");
91          sb.append("create database " + databaseName + ";\n");
92          sb.append("\n");
93          sb.append("go\n");
94          sb.append("\n");
95          sb.append("use " + databaseName + ";\n\n");
96          sb.append(
97              FileUtil.read(
98                  "../sql/portal" + minimalSuffix + "/portal" + minimalSuffix +
99                      "-sql-server.sql"));
100         sb.append("\n\n");
101         sb.append(FileUtil.read("../sql/indexes/indexes-sql-server.sql"));
102         sb.append("\n\n");
103         sb.append(FileUtil.read("../sql/sequences/sequences-sql-server.sql"));
104 
105         FileUtil.write(file, sb.toString());
106     }
107 
108     protected String getServerName() {
109         return "sql-server";
110     }
111 
112     protected String[] getTemplate() {
113         return _SQL_SERVER;
114     }
115 
116     protected String reword(String data) throws IOException {
117         BufferedReader br = new BufferedReader(new StringReader(data));
118 
119         StringBuilder sb = new StringBuilder();
120 
121         String line = null;
122 
123         while ((line = br.readLine()) != null) {
124             if (line.startsWith(ALTER_COLUMN_NAME)) {
125                 String[] template = buildColumnNameTokens(line);
126 
127                 line = StringUtil.replace(
128                     "exec sp_rename '@table@.@old-column@', '@new-column@', " +
129                         "'column';",
130                     REWORD_TEMPLATE, template);
131             }
132             else if (line.startsWith(ALTER_COLUMN_TYPE)) {
133                 String[] template = buildColumnTypeTokens(line);
134 
135                 line = StringUtil.replace(
136                     "alter table @table@ alter column @old-column@ @type@;",
137                     REWORD_TEMPLATE, template);
138             }
139 
140             sb.append(line);
141             sb.append("\n");
142         }
143 
144         br.close();
145 
146         return sb.toString();
147     }
148 
149     private static String[] _SQL_SERVER = {
150         "--", "1", "0",
151         "'19700101'", "GetDate()",
152         " image", " bit", " datetime",
153         " float", " int", " bigint",
154         " varchar(2000)", " text", " varchar",
155         "  identity(1,1)", "go"
156     };
157 
158     private static boolean _SUPPORTS_ALTER_COLUMN_NAME;
159 
160     private static boolean _SUPPORTS_ALTER_COLUMN_TYPE;
161 
162     private static SQLServerUtil _instance = new SQLServerUtil();
163 
164 }