001    /**
002     * Copyright (c) 2000-2012 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.verify;
016    
017    import com.liferay.portal.kernel.dao.db.DB;
018    import com.liferay.portal.kernel.dao.db.DBFactoryUtil;
019    import com.liferay.portal.kernel.dao.jdbc.DataAccess;
020    import com.liferay.portal.kernel.log.Log;
021    import com.liferay.portal.kernel.log.LogFactoryUtil;
022    import com.liferay.portal.kernel.util.StringBundler;
023    import com.liferay.portal.kernel.util.StringUtil;
024    
025    import java.sql.Connection;
026    import java.sql.PreparedStatement;
027    import java.sql.ResultSet;
028    
029    import java.util.ArrayList;
030    import java.util.List;
031    
032    /**
033     * @author Douglas Wong
034     */
035    public class VerifySQLServer extends VerifyProcess {
036    
037            protected void convertColumnsToUnicode() {
038                    dropNonunicodeTableIndexes();
039    
040                    Connection con = null;
041                    PreparedStatement ps = null;
042                    ResultSet rs = null;
043    
044                    try {
045                            con = DataAccess.getUpgradeOptimizedConnection();
046    
047                            StringBundler sb = new StringBundler(12);
048    
049                            sb.append("select sysobjects.name as table_name, syscolumns.name ");
050                            sb.append("AS column_name, systypes.name as data_type, ");
051                            sb.append("syscolumns.length, syscolumns.isnullable as ");
052                            sb.append("is_nullable FROM sysobjects inner join syscolumns on ");
053                            sb.append("sysobjects.id = syscolumns.id inner join systypes on ");
054                            sb.append("syscolumns.xtype = systypes.xtype where ");
055                            sb.append("(sysobjects.xtype = 'U') and (sysobjects.category != ");
056                            sb.append("2) and ");
057                            sb.append(_FILTER_NONUNICODE_DATA_TYPES);
058                            sb.append(" and ");
059                            sb.append(_FILTER_EXCLUDED_TABLES);
060                            sb.append(" order by sysobjects.name, syscolumns.colid");
061    
062                            String sql = sb.toString();
063    
064                            ps = con.prepareStatement(sql);
065    
066                            rs = ps.executeQuery();
067    
068                            while (rs.next()) {
069                                    String tableName = rs.getString("table_name");
070    
071                                    if (!isPortalTableName(tableName)) {
072                                            continue;
073                                    }
074    
075                                    String columnName = rs.getString("column_name");
076                                    String dataType = rs.getString("data_type");
077                                    int length = rs.getInt("length");
078                                    boolean nullable = rs.getBoolean("is_nullable");
079    
080                                    if (dataType.equals("varchar")) {
081                                            convertVarcharColumn(
082                                                    tableName, columnName, length, nullable);
083                                    }
084                                    else if (dataType.equals("ntext") || dataType.equals("text")) {
085                                            convertTextColumn(tableName, columnName, nullable);
086                                    }
087                            }
088    
089                            for (String addPrimaryKeySQL : _addPrimaryKeySQLs) {
090                                    runSQL(addPrimaryKeySQL);
091                            }
092                    }
093                    catch (Exception e) {
094                            _log.error(e, e);
095                    }
096                    finally {
097                            DataAccess.cleanUp(con, ps, rs);
098                    }
099            }
100    
101            protected void convertTextColumn(
102                            String tableName, String columnName, boolean nullable)
103                    throws Exception {
104    
105                    if (_log.isInfoEnabled()) {
106                            _log.info(
107                                    "Updating " + tableName + "." + columnName +" to use " +
108                                            "nvarchar(max)");
109                    }
110    
111                    StringBundler sb = new StringBundler(4);
112    
113                    sb.append("alter table ");
114                    sb.append(tableName);
115                    sb.append(" add temp nvarchar(max)");
116    
117                    if (!nullable) {
118                            sb.append(" not null");
119                    }
120    
121                    runSQL(sb.toString());
122    
123                    runSQL("update " + tableName + " set temp = " + columnName);
124    
125                    runSQL("alter table " + tableName + " drop column " + columnName);
126    
127                    runSQL(
128                            "exec sp_rename \'" + tableName + ".temp\', \'" + columnName +
129                                    "\', \'column\'");
130            }
131    
132            protected void convertVarcharColumn(
133                            String tableName, String columnName, int length, boolean nullable)
134                    throws Exception {
135    
136                    if (_log.isInfoEnabled()) {
137                            _log.info(
138                                    "Updating " + tableName + "." + columnName +
139                                            " to use nvarchar");
140                    }
141    
142                    StringBundler sb = new StringBundler(8);
143    
144                    sb.append("alter table ");
145                    sb.append(tableName);
146                    sb.append(" alter column ");
147                    sb.append(columnName);
148                    sb.append(" nvarchar(");
149    
150                    if (length == -1) {
151                            sb.append("max");
152                    }
153                    else {
154                            sb.append(length);
155                    }
156    
157                    sb.append(")");
158    
159                    if (!nullable) {
160                            sb.append(" not null");
161                    }
162    
163                    runSQL(sb.toString());
164            }
165    
166            @Override
167            protected void doVerify() throws Exception {
168                    DB db = DBFactoryUtil.getDB();
169    
170                    String dbType = db.getType();
171    
172                    if (!dbType.equals(DB.TYPE_SQLSERVER)) {
173                            return;
174                    }
175    
176                    convertColumnsToUnicode();
177            }
178    
179            protected void dropNonunicodeTableIndexes() {
180                    Connection con = null;
181                    PreparedStatement ps = null;
182                    ResultSet rs = null;
183    
184                    try {
185                            con = DataAccess.getUpgradeOptimizedConnection();
186    
187                            StringBundler sb = new StringBundler(15);
188    
189                            sb.append("select distinct sysobjects.name as table_name, ");
190                            sb.append("sysindexes.name as index_name FROM sysobjects inner ");
191                            sb.append("join sysindexes on sysobjects.id = sysindexes.id ");
192                            sb.append("inner join syscolumns on sysobjects.id = ");
193                            sb.append("syscolumns.id inner join sysindexkeys on ");
194                            sb.append("((sysobjects.id = sysindexkeys.id) and ");
195                            sb.append("(syscolumns.colid = sysindexkeys.colid) and ");
196                            sb.append("(sysindexes.indid = sysindexkeys.indid)) inner join ");
197                            sb.append("systypes on syscolumns.xtype = systypes.xtype where ");
198                            sb.append("(sysobjects.type = 'U') and (sysobjects.category != ");
199                            sb.append("2) and ");
200                            sb.append(_FILTER_NONUNICODE_DATA_TYPES);
201                            sb.append(" and ");
202                            sb.append(_FILTER_EXCLUDED_TABLES);
203                            sb.append(" order by sysobjects.name, sysindexes.name");
204    
205                            String sql = sb.toString();
206    
207                            ps = con.prepareStatement(sql);
208    
209                            rs = ps.executeQuery();
210    
211                            while (rs.next()) {
212                                    String tableName = rs.getString("table_name");
213    
214                                    if (!isPortalTableName(tableName)) {
215                                            continue;
216                                    }
217    
218                                    String indexName = rs.getString("index_name");
219    
220                                    if (_log.isInfoEnabled()) {
221                                            _log.info("Dropping index " + tableName + "." + indexName);
222                                    }
223    
224                                    String indexNameUpperCase = indexName.toUpperCase();
225    
226                                    if (indexNameUpperCase.startsWith("PK")) {
227                                            String primaryKeyColumnNames = StringUtil.merge(
228                                                    getPrimaryKeyColumnNames(indexName));
229    
230                                            runSQL(
231                                                    "alter table " + tableName + " drop constraint " +
232                                                            indexName);
233    
234                                            _addPrimaryKeySQLs.add(
235                                                    "alter table " + tableName + " add primary key (" +
236                                                            primaryKeyColumnNames + ")");
237                                    }
238                                    else {
239                                            runSQL("drop index " + indexName + " on " + tableName);
240                                    }
241                            }
242                    }
243                    catch (Exception e) {
244                            _log.error(e, e);
245                    }
246                    finally {
247                            DataAccess.cleanUp(con, ps, rs);
248                    }
249            }
250    
251            protected List<String> getPrimaryKeyColumnNames(String indexName) {
252                    List<String> columnNames = new ArrayList<String>();
253    
254                    Connection con = null;
255                    PreparedStatement ps = null;
256                    ResultSet rs = null;
257    
258                    try {
259                            con = DataAccess.getUpgradeOptimizedConnection();
260    
261                            StringBundler sb = new StringBundler(10);
262    
263                            sb.append("select distinct syscolumns.name as column_name from ");
264                            sb.append("sysobjects inner join syscolumns on sysobjects.id = ");
265                            sb.append("syscolumns.id inner join sysindexes on ");
266                            sb.append("sysobjects.id = sysindexes.id inner join sysindexkeys ");
267                            sb.append("on ((sysobjects.id = sysindexkeys.id) and ");
268                            sb.append("(syscolumns.colid = sysindexkeys.colid) and ");
269                            sb.append("(sysindexes.indid = sysindexkeys.indid)) where ");
270                            sb.append("sysindexes.name = '");
271                            sb.append(indexName);
272                            sb.append("'");
273    
274                            String sql = sb.toString();
275    
276                            ps = con.prepareStatement(sql);
277    
278                            rs = ps.executeQuery();
279    
280                            while (rs.next()) {
281                                    String columnName = rs.getString("column_name");
282    
283                                    columnNames.add(columnName);
284                            }
285                    }
286                    catch (Exception e) {
287                            _log.error(e, e);
288                    }
289                    finally {
290                            DataAccess.cleanUp(con, ps, rs);
291                    }
292    
293                    return columnNames;
294            }
295    
296            private static final String _FILTER_EXCLUDED_TABLES =
297                    "(sysobjects.name not like 'Counter') and (sysobjects.name not like " +
298                            "'Cyrus%') and (sysobjects.name not like 'QUARTZ%')";
299    
300            private static final String _FILTER_NONUNICODE_DATA_TYPES =
301                    "((systypes.name = 'varchar') OR (systypes.name = 'text'))";
302    
303            private static Log _log = LogFactoryUtil.getLog(VerifySQLServer.class);
304    
305            private List<String> _addPrimaryKeySQLs = new ArrayList<String>();
306    
307    }