1
14
15 package com.liferay.portal.dao.db;
16
17 import com.liferay.portal.kernel.dao.db.DB;
18 import com.liferay.portal.kernel.dao.db.Index;
19 import com.liferay.portal.kernel.dao.jdbc.DataAccess;
20 import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
21 import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
22 import com.liferay.portal.kernel.util.StringBundler;
23 import com.liferay.portal.kernel.util.StringUtil;
24
25 import java.io.IOException;
26
27 import java.sql.Connection;
28 import java.sql.PreparedStatement;
29 import java.sql.ResultSet;
30 import java.sql.SQLException;
31
32 import java.util.ArrayList;
33 import java.util.List;
34
35
42 public class PostgreSQLDB extends BaseDB {
43
44 public static DB getInstance() {
45 return _instance;
46 }
47
48 public String buildSQL(String template) throws IOException {
49 template = convertTimestamp(template);
50 template = replaceTemplate(template, getTemplate());
51
52 template = reword(template);
53
54 return template;
55 }
56
57 public List<Index> getIndexes() throws SQLException {
58 List<Index> indexes = new ArrayList<Index>();
59
60 Connection con = null;
61 PreparedStatement ps = null;
62 ResultSet rs = null;
63
64 try {
65 con = DataAccess.getConnection();
66
67 StringBundler sb = new StringBundler(3);
68
69 sb.append("select indexname, tablename, indexdef from pg_indexes ");
70 sb.append("where indexname like 'liferay_%' or indexname like ");
71 sb.append("'ix_%'");
72
73 String sql = sb.toString();
74
75 ps = con.prepareStatement(sql);
76
77 rs = ps.executeQuery();
78
79 while (rs.next()) {
80 String indexName = rs.getString("indexname");
81 String tableName = rs.getString("tablename");
82 String indexSQL = rs.getString("indexdef").toLowerCase().trim();
83
84 boolean unique = true;
85
86 if (indexSQL.startsWith("create index ")) {
87 unique = false;
88 }
89
90 indexes.add(new Index(indexName, tableName, unique));
91 }
92 }
93 finally {
94 DataAccess.cleanUp(con, ps, rs);
95 }
96
97 return indexes;
98 }
99
100 protected PostgreSQLDB() {
101 super(TYPE_POSTGRESQL);
102 }
103
104 protected String buildCreateFileContent(
105 String sqlDir, String databaseName, int population)
106 throws IOException {
107
108 String suffix = getSuffix(population);
109
110 StringBundler sb = new StringBundler(14);
111
112 sb.append("drop database ");
113 sb.append(databaseName);
114 sb.append(";\n");
115 sb.append("create database ");
116 sb.append(databaseName);
117 sb.append(" encoding = 'UNICODE';\n");
118 sb.append("\\c ");
119 sb.append(databaseName);
120 sb.append(";\n\n");
121 sb.append(
122 readFile(
123 sqlDir + "/portal" + suffix + "/portal" + suffix +
124 "-postgresql.sql"));
125 sb.append("\n\n");
126 sb.append(readFile(sqlDir + "/indexes/indexes-postgresql.sql"));
127 sb.append("\n\n");
128 sb.append(readFile(sqlDir + "/sequences/sequences-postgresql.sql"));
129
130 return sb.toString();
131 }
132
133 protected String getServerName() {
134 return "postgresql";
135 }
136
137 protected String[] getTemplate() {
138 return _POSTGRESQL;
139 }
140
141 protected String reword(String data) throws IOException {
142 UnsyncBufferedReader unsyncBufferedReader = new UnsyncBufferedReader(
143 new UnsyncStringReader(data));
144
145 StringBundler sb = new StringBundler();
146
147 String line = null;
148
149 while ((line = unsyncBufferedReader.readLine()) != null) {
150 if (line.startsWith(ALTER_COLUMN_NAME)) {
151 String[] template = buildColumnNameTokens(line);
152
153 line = StringUtil.replace(
154 "alter table @table@ rename @old-column@ to @new-column@;",
155 REWORD_TEMPLATE, template);
156 }
157 else if (line.startsWith(ALTER_COLUMN_TYPE)) {
158 String[] template = buildColumnTypeTokens(line);
159
160 line = StringUtil.replace(
161 "alter table @table@ alter @old-column@ type @type@ " +
162 "using @old-column@::@type@;",
163 REWORD_TEMPLATE, template);
164 }
165 else if (line.indexOf(DROP_INDEX) != -1) {
166 String[] tokens = StringUtil.split(line, " ");
167
168 line = StringUtil.replace(
169 "drop index @index@;", "@index@", tokens[2]);
170 }
171 else if (line.indexOf(DROP_PRIMARY_KEY) != -1) {
172 String[] tokens = StringUtil.split(line, " ");
173
174 line = StringUtil.replace(
175 "alter table @table@ drop constraint @table@_pkey;",
176 "@table@", tokens[2]);
177 }
178
179 sb.append(line);
180 sb.append("\n");
181 }
182
183 unsyncBufferedReader.close();
184
185 return sb.toString();
186 }
187
188 private static String[] _POSTGRESQL = {
189 "--", "true", "false",
190 "'01/01/1970'", "current_timestamp",
191 " bytea", " bool", " timestamp",
192 " double precision", " integer", " bigint",
193 " text", " text", " varchar",
194 "", "commit"
195 };
196
197 private static PostgreSQLDB _instance = new PostgreSQLDB();
198
199 }