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.DB;
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.FileUtil;
023    import com.liferay.portal.kernel.util.GetterUtil;
024    import com.liferay.portal.kernel.util.StringBundler;
025    import com.liferay.portal.kernel.util.StringUtil;
026    
027    import java.io.IOException;
028    
029    import java.sql.Connection;
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    import java.util.regex.Matcher;
037    import java.util.regex.Pattern;
038    
039    /**
040     * @author Alexander Chow
041     * @author Sandeep Soni
042     * @author Ganesh Ram
043     */
044    public class OracleDB extends BaseDB {
045    
046            public static DB getInstance() {
047                    return _instance;
048            }
049    
050            @Override
051            public String buildSQL(String template) throws IOException {
052                    template = _preBuildSQL(template);
053                    template = _postBuildSQL(template);
054    
055                    return template;
056            }
057    
058            @Override
059            public void buildSQLFile(String sqlDir, String fileName)
060                    throws IOException {
061    
062                    String oracle = buildTemplate(sqlDir, fileName);
063    
064                    oracle = _preBuildSQL(oracle);
065    
066                    StringBundler imageSB = new StringBundler();
067                    StringBundler journalArticleSB = new StringBundler();
068    
069                    try (UnsyncBufferedReader unsyncBufferedReader =
070                                    new UnsyncBufferedReader(new UnsyncStringReader(oracle))) {
071    
072                            String line = null;
073    
074                            while ((line = unsyncBufferedReader.readLine()) != null) {
075                                    if (line.startsWith("insert into Image")) {
076                                            _convertToOracleCSV(line, imageSB);
077                                    }
078                                    else if (line.startsWith("insert into JournalArticle (")) {
079                                            _convertToOracleCSV(line, journalArticleSB);
080                                    }
081                            }
082                    }
083    
084                    if (imageSB.length() > 0) {
085                            FileUtil.write(
086                                    sqlDir + "/" + fileName + "/" + fileName + "-oracle-image.csv",
087                                    imageSB.toString());
088                    }
089    
090                    if (journalArticleSB.length() > 0) {
091                            FileUtil.write(
092                                    sqlDir + "/" + fileName + "/" + fileName +
093                                            "-oracle-journalarticle.csv",
094                                    journalArticleSB.toString());
095                    }
096    
097                    oracle = _postBuildSQL(oracle);
098    
099                    FileUtil.write(
100                            sqlDir + "/" + fileName + "/" + fileName + "-oracle.sql", oracle);
101            }
102    
103            @Override
104            public List<Index> getIndexes(Connection con) throws SQLException {
105                    List<Index> indexes = new ArrayList<>();
106    
107                    PreparedStatement ps = null;
108                    ResultSet rs = null;
109    
110                    try {
111                            StringBundler sb = new StringBundler(3);
112    
113                            sb.append("select index_name, table_name, uniqueness from ");
114                            sb.append("user_indexes where index_name like 'LIFERAY_%' or ");
115                            sb.append("index_name like 'IX_%'");
116    
117                            String sql = sb.toString();
118    
119                            ps = con.prepareStatement(sql);
120    
121                            rs = ps.executeQuery();
122    
123                            while (rs.next()) {
124                                    String indexName = rs.getString("index_name");
125                                    String tableName = rs.getString("table_name");
126                                    String uniqueness = rs.getString("uniqueness");
127    
128                                    boolean unique = true;
129    
130                                    if (StringUtil.equalsIgnoreCase(uniqueness, "NONUNIQUE")) {
131                                            unique = false;
132                                    }
133    
134                                    indexes.add(new Index(indexName, tableName, unique));
135                            }
136                    }
137                    finally {
138                            DataAccess.cleanUp(null, ps, rs);
139                    }
140    
141                    return indexes;
142            }
143    
144            @Override
145            public boolean isSupportsInlineDistinct() {
146                    return _SUPPORTS_INLINE_DISTINCT;
147            }
148    
149            protected OracleDB() {
150                    super(TYPE_ORACLE);
151            }
152    
153            @Override
154            protected String buildCreateFileContent(
155                            String sqlDir, String databaseName, int population)
156                    throws IOException {
157    
158                    String suffix = getSuffix(population);
159    
160                    StringBundler sb = new StringBundler(13);
161    
162                    sb.append("drop user &1 cascade;\n");
163                    sb.append("create user &1 identified by &2;\n");
164                    sb.append("grant connect,resource to &1;\n");
165    
166                    if (population != BARE) {
167                            sb.append("connect &1/&2;\n");
168                            sb.append("set define off;\n");
169                            sb.append("\n");
170                            sb.append(getCreateTablesContent(sqlDir, suffix));
171                            sb.append("\n\n");
172                            sb.append(readFile(sqlDir + "/indexes/indexes-oracle.sql"));
173                            sb.append("\n\n");
174                            sb.append(readFile(sqlDir + "/sequences/sequences-oracle.sql"));
175                            sb.append("\n");
176                    }
177    
178                    sb.append("quit");
179    
180                    return sb.toString();
181            }
182    
183            @Override
184            protected String getServerName() {
185                    return "oracle";
186            }
187    
188            @Override
189            protected String[] getTemplate() {
190                    return _ORACLE;
191            }
192    
193            @Override
194            protected String replaceTemplate(String template, String[] actual) {
195    
196                    // LPS-12048
197    
198                    Matcher matcher = _varcharPattern.matcher(template);
199    
200                    StringBuffer sb = new StringBuffer();
201    
202                    while (matcher.find()) {
203                            int size = GetterUtil.getInteger(matcher.group(1));
204    
205                            if (size > 4000) {
206                                    size = 4000;
207                            }
208    
209                            matcher.appendReplacement(sb, "VARCHAR2(" + size + " CHAR)");
210                    }
211    
212                    matcher.appendTail(sb);
213    
214                    template = sb.toString();
215    
216                    return super.replaceTemplate(template, actual);
217            }
218    
219            @Override
220            protected String reword(String data) throws IOException {
221                    try (UnsyncBufferedReader unsyncBufferedReader =
222                                    new UnsyncBufferedReader(new UnsyncStringReader(data))) {
223    
224                            StringBundler sb = new StringBundler();
225    
226                            String line = null;
227    
228                            while ((line = unsyncBufferedReader.readLine()) != null) {
229                                    if (line.startsWith(ALTER_COLUMN_NAME)) {
230                                            String[] template = buildColumnNameTokens(line);
231    
232                                            line = StringUtil.replace(
233                                                    "alter table @table@ rename column @old-column@ to " +
234                                                            "@new-column@;",
235                                                    REWORD_TEMPLATE, template);
236                                    }
237                                    else if (line.startsWith(ALTER_COLUMN_TYPE)) {
238                                            String[] template = buildColumnTypeTokens(line);
239    
240                                            line = StringUtil.replace(
241                                                    "alter table @table@ modify @old-column@ @type@;",
242                                                    REWORD_TEMPLATE, template);
243                                    }
244                                    else if (line.startsWith(ALTER_TABLE_NAME)) {
245                                            String[] template = buildTableNameTokens(line);
246    
247                                            line = StringUtil.replace(
248                                                    "alter table @old-table@ rename to @new-table@;",
249                                                    RENAME_TABLE_TEMPLATE, template);
250                                    }
251                                    else if (line.contains(DROP_INDEX)) {
252                                            String[] tokens = StringUtil.split(line, ' ');
253    
254                                            line = StringUtil.replace(
255                                                    "drop index @index@;", "@index@", tokens[2]);
256                                    }
257    
258                                    sb.append(line);
259                                    sb.append("\n");
260                            }
261    
262                            return sb.toString();
263                    }
264            }
265    
266            private void _convertToOracleCSV(String line, StringBundler sb) {
267                    int x = line.indexOf("values (");
268                    int y = line.lastIndexOf(");");
269    
270                    line = line.substring(x + 8, y);
271    
272                    line = StringUtil.replace(line, "sysdate, ", "20050101, ");
273    
274                    sb.append(line);
275                    sb.append("\n");
276            }
277    
278            private String _postBuildSQL(String template) throws IOException {
279                    template = removeLongInserts(template);
280                    template = StringUtil.replace(template, "\\n", "'||CHR(10)||'");
281    
282                    return template;
283            }
284    
285            private String _preBuildSQL(String template) throws IOException {
286                    template = convertTimestamp(template);
287                    template = replaceTemplate(template, getTemplate());
288    
289                    template = reword(template);
290                    template = StringUtil.replace(
291                            template,
292                            new String[] {"\\\\", "\\'", "\\\""},
293                            new String[] {"\\", "''", "\""});
294    
295                    return template;
296            }
297    
298            private static final String[] _ORACLE = {
299                    "--", "1", "0",
300                    "to_date('1970-01-01 00:00:00','YYYY-MM-DD HH24:MI:SS')", "sysdate",
301                    " blob", " blob", " number(1, 0)", " timestamp", " number(30,20)",
302                    " number(30,0)", " number(30,0)", " varchar2(4000)", " clob",
303                    " varchar2", "", "commit"
304            };
305    
306            private static final boolean _SUPPORTS_INLINE_DISTINCT = false;
307    
308            private static final OracleDB _instance = new OracleDB();
309    
310            private static final Pattern _varcharPattern = Pattern.compile(
311                    "VARCHAR\\((\\d+)\\)");
312    
313    }