Source Code Cross Referenced for DataStoreInterfaceMySQL.java in  » Content-Management-System » harmonise » org » openharmonise » commons » dsi » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Content Management System » harmonise » org.openharmonise.commons.dsi.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * The contents of this file are subject to the 
003:         * Mozilla Public License Version 1.1 (the "License"); 
004:         * you may not use this file except in compliance with the License. 
005:         * You may obtain a copy of the License at http://www.mozilla.org/MPL/
006:         *
007:         * Software distributed under the License is distributed on an "AS IS"
008:         * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. 
009:         * See the License for the specific language governing rights and 
010:         * limitations under the License.
011:         *
012:         * The Initial Developer of the Original Code is Simulacra Media Ltd.
013:         * Portions created by Simulacra Media Ltd are Copyright (C) Simulacra Media Ltd, 2004.
014:         *
015:         * All Rights Reserved.
016:         *
017:         * Contributor(s):
018:         */
019:        package org.openharmonise.commons.dsi.impl;
020:
021:        import java.sql.*;
022:
023:        import java.util.*;
024:
025:        import org.openharmonise.commons.dsi.*;
026:        import org.openharmonise.commons.dsi.ddl.*;
027:        import org.openharmonise.commons.dsi.dml.*;
028:
029:        /**
030:         * Class providing interface to a MySQL database.
031:         *
032:         * @author Michael Bell
033:         * 
034:         * @see java.sql
035:         */
036:        public class DataStoreInterfaceMySQL extends AbstractDataStoreInterface {
037:
038:            //static initialiser block
039:            static {
040:                DB_DATEFORMAT = "yyyy-MM-dd HH:mm:ss";
041:            }
042:
043:            /**
044:             * Constructs a MySQL data store interface with no DB settings.
045:             */
046:            public DataStoreInterfaceMySQL() {
047:                super ();
048:            }
049:
050:            /**
051:             * Constructs a MySQL data store interface with the given connection 
052:             * type.
053:             * 
054:             * @param nConnectionType the connection type
055:             * @throws DataStoreException if any errors occur
056:             */
057:            public DataStoreInterfaceMySQL(int nConnectionType)
058:                    throws DataStoreException {
059:                super (nConnectionType);
060:            }
061:
062:            /* (non-Javadoc)
063:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getSequenceNextValue(java.lang.String)
064:             */
065:            public int getSequenceNextValue(String sSeqName)
066:                    throws DataStoreException, SQLException {
067:                Connection conn = null;
068:                ResultSet rs = null;
069:                Statement stmt = null;
070:                String sSql = null;
071:                int nSeq = -1;
072:
073:                conn = getConnection();
074:
075:                stmt = conn.createStatement();
076:
077:                sSql = "UPDATE oh_seq SET id = id +1 WHERE seq_name='"
078:                        + sSeqName + "'";
079:                stmt.executeUpdate(sSql);
080:
081:                sSql = "SELECT id from oh_seq WHERE seq_name='" + sSeqName
082:                        + "'";
083:                rs = stmt.executeQuery(sSql);
084:
085:                if (rs.next()) {
086:                    nSeq = rs.getInt(1);
087:                } else {
088:                    throw new DataStoreException("Sequence [" + sSeqName
089:                            + "] not found.");
090:                }
091:
092:                if (rs != null) {
093:                    rs.close();
094:                }
095:
096:                if (stmt != null) {
097:                    stmt.close();
098:                }
099:
100:                if (isPooledConnection() && (conn != null)) {
101:                    this .closeConnection(conn);
102:                }
103:
104:                return nSeq;
105:            }
106:
107:            /* (non-Javadoc)
108:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#insertClob(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
109:             */
110:            public void insertClob(String sTable, String sColumn, String sClob,
111:                    String sCondition) throws DataStoreException {
112:                Connection conn = null;
113:                Statement stmt = null;
114:                ResultSet rs = null;
115:
116:                if ((sCondition == null) || (sCondition.length() == 0)) {
117:                    throw new DataStoreException("Missing CLOB condition");
118:                }
119:
120:                StringBuffer sSql = new StringBuffer();
121:
122:                try {
123:                    conn = getConnection();
124:                    stmt = conn.createStatement();
125:
126:                    sSql.append("update ");
127:                    sSql.append(sTable);
128:                    sSql.append(" set ");
129:                    sSql.append(sColumn);
130:                    sSql.append(" = '");
131:                    sSql.append(addEscapeChars(sClob));
132:                    sSql.append("' where ");
133:                    sSql.append(sCondition);
134:
135:                    stmt.execute(sSql.toString());
136:
137:                    if (isPooledConnection() && (conn != null)) {
138:                        this .closeConnection(conn);
139:                    }
140:                } catch (SQLException e) {
141:                    throw new DataStoreException("SQLException: "
142:                            + e.getMessage());
143:                }
144:            }
145:
146:            /* (non-Javadoc)
147:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#updateClob(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
148:             */
149:            public void updateClob(String sTable, String sColumn, String sClob,
150:                    String sCondition) throws DataStoreException {
151:                Connection conn = null;
152:                Statement stmt = null;
153:                ResultSet rs = null;
154:
155:                if ((sCondition == null) || (sCondition.length() == 0)) {
156:                    throw new DataStoreException("Missing CLOB condition");
157:                }
158:
159:                StringBuffer sSql = new StringBuffer();
160:
161:                try {
162:                    conn = getConnection();
163:                    stmt = conn.createStatement();
164:
165:                    sSql.append("update ");
166:                    sSql.append(sTable);
167:                    sSql.append(" set ");
168:                    sSql.append(sColumn);
169:                    sSql.append(" = '");
170:                    sSql.append(this .addEscapeChars(sClob));
171:                    sSql.append("' where ");
172:                    sSql.append(sCondition);
173:
174:                    stmt.execute(sSql.toString());
175:
176:                    if (stmt != null) {
177:                        stmt.close();
178:                    }
179:
180:                    if (rs != null) {
181:                        rs.close();
182:                    }
183:
184:                    if (isPooledConnection() && (conn != null)) {
185:                        this .closeConnection(conn);
186:                    }
187:                } catch (SQLException e) {
188:                    throw new DataStoreException("SQLException: "
189:                            + e.getMessage());
190:                }
191:            }
192:
193:            /* (non-Javadoc)
194:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getClob(java.lang.String, java.lang.String, java.lang.String)
195:             */
196:            public String getClob(String sTable, String sColumn,
197:                    String sCondition) throws DataStoreException {
198:                Connection conn = null;
199:                Statement stmt = null;
200:                ResultSet rs = null;
201:                String sReturn = null;
202:
203:                if ((sCondition == null) || (sCondition.length() == 0)) {
204:                    throw new DataStoreException("Missing CLOB condition");
205:                }
206:
207:                StringBuffer sSql = new StringBuffer();
208:
209:                try {
210:                    conn = getConnection();
211:
212:                    stmt = conn.createStatement();
213:
214:                    sSql.append("select ");
215:                    sSql.append(sColumn);
216:                    sSql.append(" from ");
217:                    sSql.append(sTable);
218:                    sSql.append(" where ");
219:                    sSql.append(sCondition);
220:
221:                    try {
222:                        rs = stmt.executeQuery(sSql.toString());
223:                    } catch (SQLException e) {
224:                        throw new DataStoreException(sSql.toString() + " : "
225:                                + e.getMessage());
226:                    }
227:
228:                    if (rs.next()) {
229:                        sReturn = rs.getString(1);
230:                    }
231:
232:                    if (stmt != null) {
233:                        stmt.close();
234:                    }
235:
236:                    if (rs != null) {
237:                        rs.close();
238:                    }
239:
240:                    if (isPooledConnection() && (conn != null)) {
241:                        this .closeConnection(conn);
242:                    }
243:                } catch (SQLException e) {
244:                    throw new DataStoreException("SQLException: "
245:                            + e.getMessage());
246:                }
247:
248:                return sReturn;
249:            }
250:
251:            /* (non-Javadoc)
252:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#addEscapeChars(java.lang.String)
253:             */
254:            protected String addEscapeChars(String sOldString) {
255:                int marker = -1;
256:                int lastmarker = 0;
257:                int quotemarker = -1;
258:
259:                if (sOldString == null) {
260:                    return "";
261:                }
262:
263:                StringTokenizer tokenizer = new StringTokenizer(sOldString, "'");
264:
265:                StringBuffer sBuf = new StringBuffer();
266:
267:                while (tokenizer.hasMoreTokens() == true) {
268:                    String token = tokenizer.nextToken();
269:
270:                    sBuf.append(token);
271:                    if (tokenizer.hasMoreTokens() == true) {
272:                        sBuf.append("''");
273:                    }
274:                }
275:
276:                tokenizer = new StringTokenizer(sBuf.toString(), "\\");
277:                sBuf.setLength(0);
278:                while (tokenizer.hasMoreTokens() == true) {
279:                    String token = tokenizer.nextToken();
280:
281:                    sBuf.append(token);
282:                    if (tokenizer.hasMoreTokens() == true) {
283:                        sBuf.append("\\\\");
284:                    }
285:                }
286:
287:                return sBuf.toString();
288:            }
289:
290:            /* (non-Javadoc)
291:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getDateDataType()
292:             */
293:            public String getDateDataType() {
294:                return "DATETIME";
295:            }
296:
297:            /* (non-Javadoc)
298:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getCLOBDataType()
299:             */
300:            public String getCLOBDataType() {
301:                return "longtext";
302:            }
303:
304:            /* (non-Javadoc)
305:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getBooleanDataType()
306:             */
307:            public String getBooleanDataType() {
308:                return "SMALLINT";
309:            }
310:
311:            /* (non-Javadoc)
312:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getTableList()
313:             */
314:            public List getTableList() throws DataStoreException {
315:                Vector tables = new Vector();
316:
317:                ResultSet rs = null;
318:
319:                try {
320:                    rs = executeQuery("show tables");
321:
322:                    while (rs.next()) {
323:                        tables.add(rs.getString(1).trim());
324:                    }
325:
326:                    rs.close();
327:                } catch (SQLException e) {
328:                    throw new DataStoreException(e);
329:                }
330:
331:                return tables;
332:            }
333:
334:            /* (non-Javadoc)
335:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getSequenceList()
336:             */
337:            public List getSequenceList() throws DataStoreException {
338:                Vector seqs = new Vector();
339:                ResultSet rs = null;
340:
341:                try {
342:                    rs = executeQuery("select seq_name from oh_seq order by seq_name");
343:
344:                    while (rs.next()) {
345:                        seqs.add(rs.getString(1).trim());
346:                    }
347:
348:                    rs.close();
349:                } catch (SQLException e) {
350:                    throw new DataStoreException(e);
351:                }
352:
353:                return seqs;
354:            }
355:
356:            /* (non-Javadoc)
357:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getDateAsSQL(java.lang.String)
358:             */
359:            protected String getDateAsSQL(String date) {
360:                // localise this, as it is different for different DB implementations,
361:                // SQL Server
362:                StringBuffer sSql = new StringBuffer();
363:
364:                sSql.append("'").append(date).append("'");
365:
366:                return sSql.toString();
367:
368:            }
369:
370:            /* (non-Javadoc)
371:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getJoinCondition(org.openharmonise.commons.dsi.ColumnRef, org.openharmonise.commons.dsi.ColumnRef, boolean)
372:             */
373:            public String getJoinCondition(ColumnRef ref1, ColumnRef ref2,
374:                    boolean bIsOuter) {
375:                StringBuffer sSql = new StringBuffer();
376:
377:                sSql.append(ref1.getFullRef());
378:
379:                //TODO handle outer joins
380:
381:                sSql.append("=");
382:
383:                sSql.append(ref2.getFullRef());
384:
385:                return sSql.toString();
386:            }
387:
388:            /* (non-Javadoc)
389:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#getFunction(org.openharmonise.commons.dsi.dml.Function)
390:             */
391:            protected String getFunction(Function func)
392:                    throws DataStoreException {
393:                throw new UnsupportedOperationException(
394:                        "Method not implemented");
395:            }
396:
397:            /* (non-Javadoc)
398:             * @see org.openharmonise.commons.dsi.AbstractDataStoreInterface#createTable(org.openharmonise.commons.dsi.ddl.TableDefinition)
399:             */
400:            public void createTable(TableDefinition tblDef)
401:                    throws DataStoreException {
402:                throw new UnsupportedOperationException(
403:                        "Method not implemented");
404:            }
405:        }
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