001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.dao.db;
016    
017    import com.liferay.portal.kernel.dao.db.DBType;
018    import com.liferay.portal.kernel.dao.db.Index;
019    import com.liferay.portal.kernel.dao.jdbc.DataAccess;
020    import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
021    import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
022    import com.liferay.portal.kernel.util.StringBundler;
023    import com.liferay.portal.kernel.util.StringPool;
024    import com.liferay.portal.kernel.util.StringUtil;
025    
026    import java.io.IOException;
027    
028    import java.sql.Connection;
029    import java.sql.DatabaseMetaData;
030    import java.sql.PreparedStatement;
031    import java.sql.ResultSet;
032    import java.sql.SQLException;
033    
034    import java.util.ArrayList;
035    import java.util.List;
036    
037    /**
038     * @author Alexander Chow
039     * @author Sandeep Soni
040     * @author Ganesh Ram
041     */
042    public class SQLServerDB extends BaseDB {
043    
044            public SQLServerDB(int majorVersion, int minorVersion) {
045                    super(DBType.SQLSERVER, majorVersion, minorVersion);
046            }
047    
048            @Override
049            public String buildSQL(String template) throws IOException {
050                    template = convertTimestamp(template);
051                    template = replaceTemplate(template, getTemplate());
052    
053                    template = reword(template);
054                    template = StringUtil.replace(template, "\ngo;\n", "\ngo\n");
055                    template = StringUtil.replace(
056                            template,
057                            new String[] {"\\\\", "\\'", "\\\"", "\\n", "\\r"},
058                            new String[] {"\\", "''", "\"", "\n", "\r"});
059    
060                    return template;
061            }
062    
063            @Override
064            public List<Index> getIndexes(Connection con) throws SQLException {
065                    List<Index> indexes = new ArrayList<>();
066    
067                    PreparedStatement ps = null;
068                    ResultSet rs = null;
069    
070                    try {
071                            DatabaseMetaData databaseMetaData = con.getMetaData();
072    
073                            if (databaseMetaData.getDatabaseMajorVersion() <=
074                                            _SQL_SERVER_2000) {
075    
076                                    return indexes;
077                            }
078    
079                            StringBundler sb = new StringBundler(6);
080    
081                            sb.append("select sys.tables.name as table_name, ");
082                            sb.append("sys.indexes.name as index_name, is_unique from ");
083                            sb.append("sys.indexes inner join sys.tables on ");
084                            sb.append("sys.tables.object_id = sys.indexes.object_id where ");
085                            sb.append("sys.indexes.name like 'LIFERAY_%' or sys.indexes.name ");
086                            sb.append("like 'IX_%'");
087    
088                            String sql = sb.toString();
089    
090                            ps = con.prepareStatement(sql);
091    
092                            rs = ps.executeQuery();
093    
094                            while (rs.next()) {
095                                    String indexName = rs.getString("index_name");
096                                    String tableName = rs.getString("table_name");
097                                    boolean unique = !rs.getBoolean("is_unique");
098    
099                                    indexes.add(new Index(indexName, tableName, unique));
100                            }
101                    }
102                    finally {
103                            DataAccess.cleanUp(ps, rs);
104                    }
105    
106                    return indexes;
107            }
108    
109            @Override
110            public boolean isSupportsAlterColumnType() {
111                    return _SUPPORTS_ALTER_COLUMN_TYPE;
112            }
113    
114            @Override
115            protected String buildCreateFileContent(
116                            String sqlDir, String databaseName, int population)
117                    throws IOException {
118    
119                    String suffix = getSuffix(population);
120    
121                    StringBundler sb = new StringBundler(17);
122    
123                    sb.append("drop database ");
124                    sb.append(databaseName);
125                    sb.append(";\n");
126                    sb.append("create database ");
127                    sb.append(databaseName);
128                    sb.append(";\n");
129                    sb.append("\n");
130                    sb.append("go\n");
131                    sb.append("\n");
132    
133                    if (population != BARE) {
134                            sb.append("use ");
135                            sb.append(databaseName);
136                            sb.append(";\n\n");
137                            sb.append(getCreateTablesContent(sqlDir, suffix));
138                            sb.append("\n\n");
139                            sb.append(readFile(sqlDir + "/indexes/indexes-sql-server.sql"));
140                            sb.append("\n\n");
141                            sb.append(readFile(sqlDir + "/sequences/sequences-sql-server.sql"));
142                    }
143    
144                    return sb.toString();
145            }
146    
147            @Override
148            protected String getServerName() {
149                    return "sql-server";
150            }
151    
152            @Override
153            protected String[] getTemplate() {
154                    return _SQL_SERVER;
155            }
156    
157            @Override
158            protected String reword(String data) throws IOException {
159                    try (UnsyncBufferedReader unsyncBufferedReader =
160                                    new UnsyncBufferedReader(new UnsyncStringReader(data))) {
161    
162                            StringBundler sb = new StringBundler();
163    
164                            String line = null;
165    
166                            while ((line = unsyncBufferedReader.readLine()) != null) {
167                                    if (line.startsWith(ALTER_COLUMN_NAME)) {
168                                            String[] template = buildColumnNameTokens(line);
169    
170                                            line = StringUtil.replace(
171                                                    "exec sp_rename '@table@.@old-column@', " +
172                                                            "'@new-column@', 'column';",
173                                                    REWORD_TEMPLATE, template);
174                                    }
175                                    else if (line.startsWith(ALTER_COLUMN_TYPE)) {
176                                            String[] template = buildColumnTypeTokens(line);
177    
178                                            line = StringUtil.replace(
179                                                    "alter table @table@ alter column @old-column@ @type@;",
180                                                    REWORD_TEMPLATE, template);
181                                    }
182                                    else if (line.startsWith(ALTER_TABLE_NAME)) {
183                                            String[] template = buildTableNameTokens(line);
184    
185                                            line = StringUtil.replace(
186                                                    "exec sp_rename '@old-table@', '@new-table@';",
187                                                    RENAME_TABLE_TEMPLATE, template);
188                                    }
189                                    else if (line.contains(DROP_INDEX)) {
190                                            String[] tokens = StringUtil.split(line, ' ');
191    
192                                            String tableName = tokens[4];
193    
194                                            if (tableName.endsWith(StringPool.SEMICOLON)) {
195                                                    tableName = tableName.substring(
196                                                            0, tableName.length() - 1);
197                                            }
198    
199                                            line = StringUtil.replace(
200                                                    "drop index @table@.@index@;", "@table@", tableName);
201                                            line = StringUtil.replace(line, "@index@", tokens[2]);
202                                    }
203    
204                                    sb.append(line);
205                                    sb.append("\n");
206                            }
207    
208                            return sb.toString();
209                    }
210            }
211    
212            private static final String[] _SQL_SERVER = {
213                    "--", "1", "0", "'19700101'", "GetDate()", " image", " image", " bit",
214                    " datetime", " float", " int", " bigint", " nvarchar(2000)",
215                    " nvarchar(max)", " nvarchar", "  identity(1,1)", "go"
216            };
217    
218            private static final int _SQL_SERVER_2000 = 8;
219    
220            private static final boolean _SUPPORTS_ALTER_COLUMN_TYPE = false;
221    
222    }