1   /**
2    * Copyright (c) 2000-2008 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="PostgreSQLUtil.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 PostgreSQLUtil 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  
53          return template;
54      }
55  
56      protected PostgreSQLUtil() {
57      }
58  
59      protected void buildCreateFile(String databaseName, boolean minimal)
60          throws IOException {
61  
62          String minimalSuffix = getMinimalSuffix(minimal);
63  
64          File file = new File(
65              "../sql/create" + minimalSuffix + "/create" + minimalSuffix +
66                  "-postgresql.sql");
67  
68          StringBuilder sb = new StringBuilder();
69  
70          sb.append("drop database " + databaseName + ";\n");
71          sb.append(
72              "create database " + databaseName + " encoding = 'UNICODE';\n");
73          sb.append("\\c " + databaseName + ";\n\n");
74          sb.append(
75              FileUtil.read(
76                  "../sql/portal" + minimalSuffix + "/portal" + minimalSuffix +
77                      "-postgresql.sql"));
78          sb.append("\n\n");
79          sb.append(FileUtil.read("../sql/indexes/indexes-postgresql.sql"));
80          sb.append("\n\n");
81          sb.append(FileUtil.read("../sql/sequences/sequences-postgresql.sql"));
82  
83          FileUtil.write(file, sb.toString());
84      }
85  
86      protected String getServerName() {
87          return "postgresql";
88      }
89  
90      protected String[] getTemplate() {
91          return _POSTGRESQL;
92      }
93  
94      protected String reword(String data) throws IOException {
95          BufferedReader br = new BufferedReader(new StringReader(data));
96  
97          StringBuilder sb = new StringBuilder();
98  
99          String line = null;
100 
101         while ((line = br.readLine()) != null) {
102             if (line.startsWith(ALTER_COLUMN_TYPE)) {
103                 String[] template = buildColumnTypeTokens(line);
104 
105                 line = StringUtil.replace(
106                     "alter table @table@ alter @old-column@ type @type@;",
107                     REWORD_TEMPLATE, template);
108             }
109             else if (line.startsWith(ALTER_COLUMN_NAME)) {
110                 String[] template = buildColumnNameTokens(line);
111 
112                 line = StringUtil.replace(
113                     "alter table @table@ rename @old-column@ to @new-column@;",
114                     REWORD_TEMPLATE, template);
115             }
116             else if (line.indexOf(DROP_PRIMARY_KEY) != -1) {
117                 String[] tokens = StringUtil.split(line, " ");
118 
119                 line = StringUtil.replace(
120                     "alter table @table@ drop constraint @table@_pkey;",
121                     "@table@", tokens[2]);
122             }
123 
124             sb.append(line);
125             sb.append("\n");
126         }
127 
128         br.close();
129 
130         return sb.toString();
131     }
132 
133     private static String[] _POSTGRESQL = {
134         "--", "true", "false",
135         "'01/01/1970'", "current_timestamp",
136         " bytea", " bool", " timestamp",
137         " double precision", " integer", " bigint",
138         " text", " text", " varchar",
139         "", "commit"
140     };
141 
142     private static PostgreSQLUtil _instance = new PostgreSQLUtil();
143 
144 }