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.StringMaker;
26  import com.liferay.portal.kernel.util.StringUtil;
27  import com.liferay.util.FileUtil;
28  
29  import java.io.BufferedReader;
30  import java.io.File;
31  import java.io.IOException;
32  import java.io.StringReader;
33  
34  /**
35   * <a href="PostgreSQLUtil.java.html"><b><i>View Source</i></b></a>
36   *
37   * @author Alexander Chow
38   *
39   */
40  public class PostgreSQLUtil extends DBUtil {
41  
42      public static DBUtil getInstance() {
43          return _instance;
44      }
45  
46      public String buildSQL(String template) throws IOException {
47          template = convertTimestamp(template);
48          template = StringUtil.replace(template, TEMPLATE, getTemplate());
49  
50          template = reword(template);
51  
52          return template;
53      }
54  
55      protected PostgreSQLUtil() {
56      }
57  
58      protected void buildCreateFile(String databaseName, boolean minimal)
59          throws IOException {
60  
61          String minimalSuffix = getMinimalSuffix(minimal);
62  
63          File file = new File(
64              "../sql/create" + minimalSuffix + "/create" + minimalSuffix +
65                  "-postgresql.sql");
66  
67          StringMaker sm = new StringMaker();
68  
69          sm.append("drop database " + databaseName + ";\n");
70          sm.append(
71              "create database " + databaseName + " encoding = 'UNICODE';\n");
72          sm.append("\\c " + databaseName + ";\n\n");
73          sm.append(
74              FileUtil.read(
75                  "../sql/portal" + minimalSuffix + "/portal" + minimalSuffix +
76                      "-postgresql.sql"));
77          sm.append("\n\n");
78          sm.append(FileUtil.read("../sql/indexes/indexes-postgresql.sql"));
79          sm.append("\n\n");
80          sm.append(FileUtil.read("../sql/sequences/sequences-postgresql.sql"));
81  
82          FileUtil.write(file, sm.toString());
83      }
84  
85      protected String getServerName() {
86          return "postgresql";
87      }
88  
89      protected String[] getTemplate() {
90          return _POSTGRESQL;
91      }
92  
93      protected String reword(String data) throws IOException {
94          BufferedReader br = new BufferedReader(new StringReader(data));
95  
96          StringMaker sm = new StringMaker();
97  
98          String line = null;
99  
100         while ((line = br.readLine()) != null) {
101             if (line.startsWith(ALTER_COLUMN_TYPE)) {
102                 String[] template = buildColumnTypeTokens(line);
103 
104                 line = StringUtil.replace(
105                     "alter table @table@ alter @old-column@ type @type@;",
106                     REWORD_TEMPLATE, template);
107             }
108             else if (line.startsWith(ALTER_COLUMN_NAME)) {
109                 String[] template = buildColumnNameTokens(line);
110 
111                 line = StringUtil.replace(
112                     "alter table @table@ rename @old-column@ to @new-column@;",
113                     REWORD_TEMPLATE, template);
114             }
115             else if (line.indexOf(DROP_PRIMARY_KEY) != -1) {
116                 String[] tokens = StringUtil.split(line, " ");
117 
118                 line = StringUtil.replace(
119                     "alter table @table@ drop constraint @table@_pkey;",
120                     "@table@", tokens[2]);
121             }
122 
123             sm.append(line);
124             sm.append("\n");
125         }
126 
127         br.close();
128 
129         return sm.toString();
130     }
131 
132     private static String[] _POSTGRESQL = {
133         "--", "true", "false",
134         "'01/01/1970'", "current_timestamp",
135         " bool", " timestamp", " double precision",
136         " integer", " bigint",
137         " text", " text", " varchar",
138         "", "commit"
139     };
140 
141     private static PostgreSQLUtil _instance = new PostgreSQLUtil();
142 
143 }