001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
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.getConnection();
046    
047                            StringBundler sb = new StringBundler(11);
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 ");
056                            sb.append(_FILTER_NONUNICODE_DATA_TYPES);
057                            sb.append(" and ");
058                            sb.append(_FILTER_EXCLUDED_TABLES);
059                            sb.append(" order by sysobjects.name, syscolumns.colid");
060    
061                            String sql = sb.toString();
062    
063                            ps = con.prepareStatement(sql);
064    
065                            rs = ps.executeQuery();
066    
067                            while (rs.next()) {
068                                    String tableName = rs.getString("table_name");
069                                    String columnName = rs.getString("column_name");
070                                    String dataType = rs.getString("data_type");
071                                    int length = rs.getInt("length");
072                                    boolean nullable = rs.getBoolean("is_nullable");
073    
074                                    if (dataType.equals("varchar")) {
075                                            convertVarcharColumn(
076                                                    tableName, columnName, length, nullable);
077                                    }
078                                    else if (dataType.equals("text")) {
079                                            convertTextColumn(
080                                                    tableName, columnName, length, nullable);
081                                    }
082                            }
083    
084                            for (String addPrimaryKeySQL : _addPrimaryKeySQLs) {
085                                    runSQL(addPrimaryKeySQL);
086                            }
087                    }
088                    catch (Exception e) {
089                            _log.error(e, e);
090                    }
091                    finally {
092                            DataAccess.cleanUp(con, ps, rs);
093                    }
094            }
095    
096            protected void convertTextColumn(
097                            String tableName, String columnName, int length, boolean nullable)
098                    throws Exception {
099    
100                    if (_log.isInfoEnabled()) {
101                            _log.info(
102                                    "Updating " + tableName + "." + columnName + " to use ntext");
103                    }
104    
105                    StringBundler sb = new StringBundler(4);
106    
107                    sb.append("alter table ");
108                    sb.append(tableName);
109                    sb.append(" add temp ntext");
110    
111                    if (!nullable) {
112                            sb.append(" not null");
113                    }
114    
115                    runSQL(sb.toString());
116    
117                    runSQL("update " + tableName + " set temp = " + columnName);
118    
119                    runSQL("alter table " + tableName + " drop column " + columnName);
120    
121                    runSQL(
122                            "exec sp_rename \'" + tableName + ".temp\', \'" + columnName +
123                                    "\', \'column\'");
124            }
125    
126            protected void convertVarcharColumn(
127                            String tableName, String columnName, int length, boolean nullable)
128                    throws Exception {
129    
130                    if (_log.isInfoEnabled()) {
131                            _log.info(
132                                    "Updating " + tableName + "." + columnName +
133                                            " to use nvarchar");
134                    }
135    
136                    StringBundler sb = new StringBundler(8);
137    
138                    sb.append("alter table ");
139                    sb.append(tableName);
140                    sb.append(" alter column ");
141                    sb.append(columnName);
142                    sb.append(" nvarchar(");
143                    sb.append(length);
144                    sb.append(")");
145    
146                    if (!nullable) {
147                            sb.append(" not null");
148                    }
149    
150                    runSQL(sb.toString());
151            }
152    
153            @Override
154            protected void doVerify() throws Exception {
155                    DB db = DBFactoryUtil.getDB();
156    
157                    String dbType = db.getType();
158    
159                    if (!dbType.equals(DB.TYPE_SQLSERVER)) {
160                            return;
161                    }
162    
163                    convertColumnsToUnicode();
164            }
165    
166            protected void dropNonunicodeTableIndexes() {
167                    Connection con = null;
168                    PreparedStatement ps = null;
169                    ResultSet rs = null;
170    
171                    try {
172                            con = DataAccess.getConnection();
173    
174                            StringBundler sb = new StringBundler(12);
175    
176                            sb.append("select distinct sysobjects.name as table_name, ");
177                            sb.append("sysindexes.name as index_name FROM sysobjects inner ");
178                            sb.append("join sysindexes on sysobjects.id = sysindexes.id ");
179                            sb.append("inner join syscolumns on sysobjects.id = ");
180                            sb.append("syscolumns.id inner join sysindexkeys on ");
181                            sb.append("((sysobjects.id = sysindexkeys.id) and ");
182                            sb.append("(syscolumns.colid = sysindexkeys.colid) and ");
183                            sb.append("(sysindexes.indid = sysindexkeys.indid)) inner join ");
184                            sb.append("systypes on syscolumns.xtype = systypes.xtype where ");
185                            sb.append("sysobjects.type = 'U' and ");
186                            sb.append(_FILTER_NONUNICODE_DATA_TYPES);
187                            sb.append(" and ");
188                            sb.append(_FILTER_EXCLUDED_TABLES);
189                            sb.append(" order by sysobjects.name, sysindexes.name");
190    
191                            String sql = sb.toString();
192    
193                            ps = con.prepareStatement(sql);
194    
195                            rs = ps.executeQuery();
196    
197                            while (rs.next()) {
198                                    String tableName = rs.getString("table_name");
199                                    String indexName = rs.getString("index_name");
200    
201                                    if (_log.isInfoEnabled()) {
202                                            _log.info("Dropping index " + tableName + "." + indexName);
203                                    }
204    
205                                    if (indexName.startsWith("PK")) {
206                                            String primaryKeyColumnNames = StringUtil.merge(
207                                                    getPrimaryKeyColumnNames(indexName));
208    
209                                            runSQL(
210                                                    "alter table " + tableName + " drop constraint " +
211                                                            indexName);
212    
213                                            _addPrimaryKeySQLs.add(
214                                                    "alter table " + tableName + " add primary key (" +
215                                                            primaryKeyColumnNames + ")");
216                                    }
217                                    else {
218                                            runSQL("drop index " + indexName + " on " + tableName);
219                                    }
220                            }
221                    }
222                    catch (Exception e) {
223                            _log.error(e, e);
224                    }
225                    finally {
226                            DataAccess.cleanUp(con, ps, rs);
227                    }
228            }
229    
230            protected List<String> getPrimaryKeyColumnNames(String indexName) {
231                    List<String> columnNames = new ArrayList<String>();
232    
233                    Connection con = null;
234                    PreparedStatement ps = null;
235                    ResultSet rs = null;
236    
237                    try {
238                            con = DataAccess.getConnection();
239    
240                            StringBundler sb = new StringBundler(10);
241    
242                            sb.append("select distinct syscolumns.name as column_name from ");
243                            sb.append("sysobjects inner join syscolumns on sysobjects.id = ");
244                            sb.append("syscolumns.id inner join sysindexes on ");
245                            sb.append("sysobjects.id = sysindexes.id inner join sysindexkeys ");
246                            sb.append("on ((sysobjects.id = sysindexkeys.id) and ");
247                            sb.append("(syscolumns.colid = sysindexkeys.colid) and ");
248                            sb.append("(sysindexes.indid = sysindexkeys.indid)) where ");
249                            sb.append("sysindexes.name = '");
250                            sb.append(indexName);
251                            sb.append("'");
252    
253                            String sql = sb.toString();
254    
255                            ps = con.prepareStatement(sql);
256    
257                            rs = ps.executeQuery();
258    
259                            while (rs.next()) {
260                                    String columnName = rs.getString("column_name");
261    
262                                    columnNames.add(columnName);
263                            }
264                    }
265                    catch (Exception e) {
266                            _log.error(e, e);
267                    }
268                    finally {
269                            DataAccess.cleanUp(con, ps, rs);
270                    }
271    
272                    return columnNames;
273            }
274    
275            private static final String _FILTER_EXCLUDED_TABLES =
276                    "(sysobjects.name not like 'Counter') and (sysobjects.name not like " +
277                            "'Cyrus%') and (sysobjects.name not like 'QUARTZ%')";
278    
279            private static final String _FILTER_NONUNICODE_DATA_TYPES =
280                    "((systypes.name = 'varchar') OR (systypes.name = 'text'))";
281    
282            private static Log _log = LogFactoryUtil.getLog(VerifySQLServer.class);
283    
284            private List<String> _addPrimaryKeySQLs = new ArrayList<String>();
285    
286    }