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="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          super(TYPE_POSTGRESQL);
58      }
59  
60      protected void buildCreateFile(String databaseName, boolean minimal)
61          throws IOException {
62  
63          String minimalSuffix = getMinimalSuffix(minimal);
64  
65          File file = new File(
66              "../sql/create" + minimalSuffix + "/create" + minimalSuffix +
67                  "-postgresql.sql");
68  
69          StringBuilder sb = new StringBuilder();
70  
71          sb.append("drop database " + databaseName + ";\n");
72          sb.append(
73              "create database " + databaseName + " encoding = 'UNICODE';\n");
74          sb.append("\\c " + databaseName + ";\n\n");
75          sb.append(
76              FileUtil.read(
77                  "../sql/portal" + minimalSuffix + "/portal" + minimalSuffix +
78                      "-postgresql.sql"));
79          sb.append("\n\n");
80          sb.append(FileUtil.read("../sql/indexes/indexes-postgresql.sql"));
81          sb.append("\n\n");
82          sb.append(FileUtil.read("../sql/sequences/sequences-postgresql.sql"));
83  
84          FileUtil.write(file, sb.toString());
85      }
86  
87      protected String getServerName() {
88          return "postgresql";
89      }
90  
91      protected String[] getTemplate() {
92          return _POSTGRESQL;
93      }
94  
95      protected String reword(String data) throws IOException {
96          BufferedReader br = new BufferedReader(new StringReader(data));
97  
98          StringBuilder sb = new StringBuilder();
99  
100         String line = null;
101 
102         while ((line = br.readLine()) != null) {
103             if (line.startsWith(ALTER_COLUMN_TYPE)) {
104                 String[] template = buildColumnTypeTokens(line);
105 
106                 line = StringUtil.replace(
107                     "alter table @table@ alter @old-column@ type @type@;",
108                     REWORD_TEMPLATE, template);
109             }
110             else if (line.startsWith(ALTER_COLUMN_NAME)) {
111                 String[] template = buildColumnNameTokens(line);
112 
113                 line = StringUtil.replace(
114                     "alter table @table@ rename @old-column@ to @new-column@;",
115                     REWORD_TEMPLATE, template);
116             }
117             else if (line.indexOf(DROP_PRIMARY_KEY) != -1) {
118                 String[] tokens = StringUtil.split(line, " ");
119 
120                 line = StringUtil.replace(
121                     "alter table @table@ drop constraint @table@_pkey;",
122                     "@table@", tokens[2]);
123             }
124 
125             sb.append(line);
126             sb.append("\n");
127         }
128 
129         br.close();
130 
131         return sb.toString();
132     }
133 
134     private static String[] _POSTGRESQL = {
135         "--", "true", "false",
136         "'01/01/1970'", "current_timestamp",
137         " bytea", " bool", " timestamp",
138         " double precision", " integer", " bigint",
139         " text", " text", " varchar",
140         "", "commit"
141     };
142 
143     private static PostgreSQLUtil _instance = new PostgreSQLUtil();
144 
145 }