Source Code Cross Referenced for SpyPreparedStatement.java in  » Development » Spy » craftsman » spy » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Development » Spy » craftsman.spy 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Craftsman Spy.
003:         * Copyright (C) 2005  Sébastien LECACHEUR
004:         *
005:         * This program is free software; you can redistribute it and/or modify
006:         * it under the terms of the GNU General Public License as published by
007:         * the Free Software Foundation; either version 2 of the License, or
008:         * (at your option) any later version.
009:         *
010:         * This program is distributed in the hope that it will be useful,
011:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
012:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013:         * GNU General Public License for more details.
014:         *
015:         * You should have received a copy of the GNU General Public License
016:         * along with this program; if not, write to the Free Software
017:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
018:         */
019:        package craftsman.spy;
020:
021:        import java.io.InputStream;
022:        import java.io.Reader;
023:        import java.math.BigDecimal;
024:        import java.net.URL;
025:        import java.sql.Array;
026:        import java.sql.Blob;
027:        import java.sql.Clob;
028:        import java.sql.Connection;
029:        import java.sql.Date;
030:        import java.sql.ParameterMetaData;
031:        import java.sql.PreparedStatement;
032:        import java.sql.Ref;
033:        import java.sql.ResultSet;
034:        import java.sql.ResultSetMetaData;
035:        import java.sql.SQLException;
036:        import java.sql.Time;
037:        import java.sql.Timestamp;
038:        import java.util.ArrayList;
039:        import java.util.Calendar;
040:
041:        /**
042:         * The classe used to represent a precompiled SQL statement.
043:         * 
044:         * @author Sébastien LECACHEUR
045:         */
046:        public class SpyPreparedStatement extends SpyStatement implements 
047:                PreparedStatement {
048:            /**
049:             * The real prepared statement instance.
050:             */
051:            private PreparedStatement real = null;
052:
053:            /**
054:             * The current prepared SQL.
055:             */
056:            protected String preparedSql = null;
057:
058:            /**
059:             * The list of all the parameters.
060:             */
061:            private ArrayList parameters = null;
062:
063:            /**
064:             * Constructs a new Spy JDBC prepared statement.
065:             * 
066:             * @param c Connection The used connection.
067:             * @param pstm PreparedStatement The real JDBC prepared statement.
068:             * @param sql String The prepared SQL.
069:             */
070:            protected SpyPreparedStatement(Connection c,
071:                    PreparedStatement pstm, String sql) {
072:                super (c, pstm);
073:                real = pstm;
074:                preparedSql = sql;
075:
076:                // Initializes capacity with the number of '?' in sql string
077:                parameters = new ArrayList(1);
078:                addParametersList();
079:            }
080:
081:            /**
082:             * Retrieves the estimation of the number of parameters for
083:             * the prepared SQL.
084:             * 
085:             * @return int The number of parameters.
086:             */
087:            protected int getEstimatedParametersCount() {
088:                int count = 0, index = 0;
089:                while ((index = preparedSql.indexOf('?', index + 1)) != -1)
090:                    count++;
091:
092:                return count;
093:            }
094:
095:            /**
096:             * Adds a new parameters list for the next SQL or batch.
097:             */
098:            private void addParametersList() {
099:                // Adds a new parameters list for the next batch
100:                parameters
101:                        .add(new ArrayList(getEstimatedParametersCount() + 1));
102:
103:                // Initializes the new parameters list
104:                ArrayList nextParameters = (ArrayList) parameters
105:                        .get(parameters.size() - 1);
106:                if (nextParameters != null) {
107:                    for (int i = 0; i < getEstimatedParametersCount() + 1; i++)
108:                        nextParameters.add(i, null);
109:                } else {
110:                    if (log.isFatalEnabled())
111:                        log
112:                                .fatal("the next parameters list is null (current size is "
113:                                        + parameters.size() + ")");
114:                }
115:            }
116:
117:            /**
118:             * Registers the given input parameter.
119:             * 
120:             * @param paramIndex int The index position of the parameter.
121:             * @param parameter Object The value of the parameter.
122:             */
123:            private void registerInputParameter(int paramIndex, Object parameter) {
124:                // Check if the current parameters list is initialized
125:                if (parameters.size() == 0
126:                        || parameters.get(parameters.size() - 1) == null) {
127:                    addParametersList();
128:                }
129:
130:                ArrayList currentParameters = (ArrayList) parameters
131:                        .get(parameters.size() - 1);
132:                if (currentParameters != null) {
133:                    if (currentParameters.size() <= paramIndex) {
134:                        currentParameters.ensureCapacity(paramIndex + 1);
135:                        for (int i = currentParameters.size(); i < paramIndex; i++)
136:                            currentParameters.add(i, null);
137:                        currentParameters.add(paramIndex, parameter);
138:                    } else {
139:                        currentParameters.set(paramIndex, parameter);
140:                    }
141:                } else {
142:                    if (log.isFatalEnabled())
143:                        log
144:                                .fatal("the current parameters list is null (current size is "
145:                                        + parameters.size() + ")");
146:                }
147:            }
148:
149:            /**
150:             * Retrieves the string representation with parameters of
151:             * a prepared SQL.
152:             * 
153:             * @param index int The index of the prepared SQL.
154:             * @return String The string representation with parameters
155:             * of the prepared SQL.
156:             */
157:            private String getDisplayableSql(int index) {
158:                StringBuffer displayableSql = new StringBuffer(preparedSql
159:                        .length());
160:
161:                if (parameters != null) {
162:                    int i = 1, limit = 0, base = 0;
163:                    while ((limit = preparedSql.indexOf('?', limit)) != -1) {
164:                        displayableSql.append(preparedSql
165:                                .substring(base, limit));
166:                        if (((ArrayList) parameters.get(index)).get(i) instanceof  String) {
167:                            displayableSql.append("'");
168:                            displayableSql.append(((ArrayList) parameters
169:                                    .get(index)).get(i));
170:                            displayableSql.append("'");
171:                        } else if (((ArrayList) parameters.get(index)).get(i) == null) {
172:                            displayableSql.append("NULL");
173:                        } else {
174:                            displayableSql.append(((ArrayList) parameters
175:                                    .get(index)).get(i));
176:                        }
177:                        i++;
178:                        limit++;
179:                        base = limit;
180:                    }
181:
182:                    if (base < preparedSql.length()) {
183:                        displayableSql.append(preparedSql.substring(base));
184:                    }
185:                }
186:
187:                return displayableSql.toString();
188:            }
189:
190:            /**
191:             * Logs the success of a SQL execution.
192:             * 
193:             * @param result String The string representation of the SQL result.
194:             * @param time long The execution time.
195:             */
196:            private void logSql(String result, long time) {
197:                if (log.isInfoEnabled()) {
198:                    for (int i = 0; i < parameters.size(); i++) {
199:                        log.info(getId() + ":" + getDisplayableSql(i) + " => "
200:                                + result + " (" + (time) + " ms)");
201:                    }
202:                }
203:            }
204:
205:            /**
206:             * Logs the failure of a SQL execution.
207:             * 
208:             * @param e SQLException The throwed SQL exception by the execution.
209:             * @param time long The execution time.
210:             */
211:            private void logSql(SQLException e, long time) {
212:                if (log.isErrorEnabled()) {
213:                    for (int i = 0; i < parameters.size(); i++) {
214:                        log.error(getId() + ":" + getDisplayableSql(i)
215:                                + " => state=" + e.getSQLState() + ",code="
216:                                + e.getErrorCode() + " (" + (time) + " ms)", e);
217:                    }
218:                }
219:            }
220:
221:            /**
222:             * @see PreparedStatement#executeUpdate()
223:             */
224:            public int executeUpdate() throws SQLException {
225:                long end, start = System.currentTimeMillis();
226:                int result = 0;
227:
228:                try {
229:                    result = real.executeUpdate();
230:                    end = System.currentTimeMillis();
231:                    logSql(String.valueOf(result), end - start);
232:                } catch (SQLException e) {
233:                    end = System.currentTimeMillis();
234:                    logSql(e, end - start);
235:                    throw e;
236:                }
237:
238:                return result;
239:            }
240:
241:            /**
242:             * @see PreparedStatement#addBatch()
243:             */
244:            public void addBatch() throws SQLException {
245:                addParametersList();
246:                real.addBatch();
247:            }
248:
249:            /**
250:             * @see PreparedStatement#clearParameters()
251:             */
252:            public void clearParameters() throws SQLException {
253:                for (int i = 0; i < parameters.size(); i++)
254:                    parameters.remove(i);
255:                real.clearParameters();
256:            }
257:
258:            /**
259:             * @see PreparedStatement#execute()
260:             */
261:            public boolean execute() throws SQLException {
262:                long end, start = System.currentTimeMillis();
263:                boolean result = false;
264:
265:                try {
266:                    result = real.execute();
267:                    end = System.currentTimeMillis();
268:                    logSql(String.valueOf(result), end - start);
269:                } catch (SQLException e) {
270:                    end = System.currentTimeMillis();
271:                    logSql(e, end - start);
272:                    throw e;
273:                }
274:
275:                return result;
276:            }
277:
278:            /**
279:             * @see PreparedStatement#setByte(int, byte)
280:             */
281:            public void setByte(int parameterIndex, byte x) throws SQLException {
282:                registerInputParameter(parameterIndex, new Byte(x).toString());
283:                real.setByte(parameterIndex, x);
284:            }
285:
286:            /**
287:             * @see PreparedStatement#setDouble(int, double)
288:             */
289:            public void setDouble(int parameterIndex, double x)
290:                    throws SQLException {
291:                registerInputParameter(parameterIndex, new Double(x));
292:                real.setDouble(parameterIndex, x);
293:            }
294:
295:            /**
296:             * @see PreparedStatement#setFloat(int, float)
297:             */
298:            public void setFloat(int parameterIndex, float x)
299:                    throws SQLException {
300:                registerInputParameter(parameterIndex, new Float(x));
301:                real.setFloat(parameterIndex, x);
302:            }
303:
304:            /**
305:             * @see PreparedStatement#setInt(int, int)
306:             */
307:            public void setInt(int parameterIndex, int x) throws SQLException {
308:                registerInputParameter(parameterIndex, new Integer(x));
309:                real.setInt(parameterIndex, x);
310:            }
311:
312:            /**
313:             * @see PreparedStatement#setNull(int, int)
314:             */
315:            public void setNull(int parameterIndex, int sqlType)
316:                    throws SQLException {
317:                registerInputParameter(parameterIndex, null);
318:                real.setNull(parameterIndex, sqlType);
319:            }
320:
321:            /**
322:             * @see PreparedStatement#setLong(int, long)
323:             */
324:            public void setLong(int parameterIndex, long x) throws SQLException {
325:                registerInputParameter(parameterIndex, new Long(x));
326:                real.setLong(parameterIndex, x);
327:            }
328:
329:            /**
330:             * @see PreparedStatement#setShort(int, short)
331:             */
332:            public void setShort(int parameterIndex, short x)
333:                    throws SQLException {
334:                registerInputParameter(parameterIndex, new Short(x));
335:                real.setShort(parameterIndex, x);
336:            }
337:
338:            /**
339:             * @see PreparedStatement#setBoolean(int, boolean)
340:             */
341:            public void setBoolean(int parameterIndex, boolean x)
342:                    throws SQLException {
343:                registerInputParameter(parameterIndex, Boolean.valueOf(x)
344:                        .toString());
345:                real.setBoolean(parameterIndex, x);
346:            }
347:
348:            /**
349:             * @see PreparedStatement#setBytes(int, byte[])
350:             */
351:            public void setBytes(int parameterIndex, byte[] x)
352:                    throws SQLException {
353:                registerInputParameter(parameterIndex, x.toString());
354:                real.setBytes(parameterIndex, x);
355:            }
356:
357:            /**
358:             * @see PreparedStatement#setAsciiStream(int, java.io.InputStream, int)
359:             */
360:            public void setAsciiStream(int parameterIndex, InputStream x,
361:                    int length) throws SQLException {
362:                registerInputParameter(parameterIndex, x.toString());
363:                real.setAsciiStream(parameterIndex, x, length);
364:            }
365:
366:            /**
367:             * @see PreparedStatement#setBinaryStream(int, java.io.InputStream, int)
368:             */
369:            public void setBinaryStream(int parameterIndex, InputStream x,
370:                    int length) throws SQLException {
371:                registerInputParameter(parameterIndex, x.toString());
372:                real.setBinaryStream(parameterIndex, x, length);
373:            }
374:
375:            /**
376:             * @see PreparedStatement#setUnicodeStream(int, java.io.InputStream, int)
377:             */
378:            public void setUnicodeStream(int parameterIndex, InputStream x,
379:                    int length) throws SQLException {
380:                registerInputParameter(parameterIndex, x.toString());
381:                real.setUnicodeStream(parameterIndex, x, length);
382:            }
383:
384:            /**
385:             * @see PreparedStatement#setCharacterStream(int, java.io.Reader, int)
386:             */
387:            public void setCharacterStream(int parameterIndex, Reader reader,
388:                    int length) throws SQLException {
389:                registerInputParameter(parameterIndex, reader.toString());
390:                real.setCharacterStream(parameterIndex, reader, length);
391:            }
392:
393:            /**
394:             * @see PreparedStatement#setObject(int, Object)
395:             */
396:            public void setObject(int parameterIndex, Object x)
397:                    throws SQLException {
398:                registerInputParameter(parameterIndex, x.toString());
399:                real.setObject(parameterIndex, x);
400:            }
401:
402:            /**
403:             * @see PreparedStatement#setObject(int, Object, int)
404:             */
405:            public void setObject(int parameterIndex, Object x,
406:                    int targetSqlType) throws SQLException {
407:                registerInputParameter(parameterIndex, x.toString());
408:                real.setObject(parameterIndex, x, targetSqlType);
409:            }
410:
411:            /**
412:             * @see PreparedStatement#setObject(int, Object, int, int)
413:             */
414:            public void setObject(int parameterIndex, Object x,
415:                    int targetSqlType, int scale) throws SQLException {
416:                registerInputParameter(parameterIndex, x.toString());
417:                real.setObject(parameterIndex, x, targetSqlType, scale);
418:            }
419:
420:            /**
421:             * @see PreparedStatement#setNull(int, int, String)
422:             */
423:            public void setNull(int paramIndex, int sqlType, String typeName)
424:                    throws SQLException {
425:                registerInputParameter(paramIndex, null);
426:                real.setNull(paramIndex, sqlType, typeName);
427:            }
428:
429:            /**
430:             * @see PreparedStatement#setString(int, String)
431:             */
432:            public void setString(int parameterIndex, String x)
433:                    throws SQLException {
434:                registerInputParameter(parameterIndex, x);
435:                real.setString(parameterIndex, x);
436:            }
437:
438:            /**
439:             * @see PreparedStatement#setBigDecimal(int, java.math.BigDecimal)
440:             */
441:            public void setBigDecimal(int parameterIndex, BigDecimal x)
442:                    throws SQLException {
443:                registerInputParameter(parameterIndex, x.toString());
444:                real.setBigDecimal(parameterIndex, x);
445:            }
446:
447:            /**
448:             * @see PreparedStatement#setURL(int, java.net.URL)
449:             */
450:            public void setURL(int parameterIndex, URL x) throws SQLException {
451:                registerInputParameter(parameterIndex, x.toString());
452:                real.setURL(parameterIndex, x);
453:            }
454:
455:            /**
456:             * @see PreparedStatement#setArray(int, Array)
457:             */
458:            public void setArray(int i, Array x) throws SQLException {
459:                registerInputParameter(i, x.toString());
460:                real.setArray(i, x);
461:            }
462:
463:            /**
464:             * @see PreparedStatement#setBlob(int, Blob)
465:             */
466:            public void setBlob(int i, Blob x) throws SQLException {
467:                registerInputParameter(i, x.toString());
468:                real.setBlob(i, x);
469:            }
470:
471:            /**
472:             * @see PreparedStatement#setClob(int, Clob)
473:             */
474:            public void setClob(int i, Clob x) throws SQLException {
475:                registerInputParameter(i, x.toString());
476:                real.setClob(i, x);
477:            }
478:
479:            /**
480:             * @see PreparedStatement#setDate(int, Date)
481:             */
482:            public void setDate(int parameterIndex, Date x) throws SQLException {
483:                registerInputParameter(parameterIndex, x.toString());
484:                real.setDate(parameterIndex, x);
485:            }
486:
487:            /**
488:             * @see PreparedStatement#getParameterMetaData()
489:             */
490:            public ParameterMetaData getParameterMetaData() throws SQLException {
491:                return real.getParameterMetaData();
492:            }
493:
494:            /**
495:             * @see PreparedStatement#setRef(int, Ref)
496:             */
497:            public void setRef(int i, Ref x) throws SQLException {
498:                registerInputParameter(i, x.toString());
499:                real.setRef(i, x);
500:            }
501:
502:            /**
503:             * @see PreparedStatement#executeQuery()
504:             */
505:            public ResultSet executeQuery() throws SQLException {
506:                long end, start = System.currentTimeMillis();
507:                ResultSet result = null;
508:
509:                try {
510:                    result = new SpyResultSet(getConnection(), this , real
511:                            .executeQuery());
512:                    end = System.currentTimeMillis();
513:                    logSql("...", end - start);
514:                } catch (SQLException e) {
515:                    end = System.currentTimeMillis();
516:                    logSql(e, end - start);
517:                    throw e;
518:                }
519:
520:                return result;
521:            }
522:
523:            /**
524:             * @see PreparedStatement#getMetaData()
525:             */
526:            public ResultSetMetaData getMetaData() throws SQLException {
527:                return real.getMetaData();
528:            }
529:
530:            /**
531:             * @see PreparedStatement#setTime(int, Time)
532:             */
533:            public void setTime(int parameterIndex, Time x) throws SQLException {
534:                registerInputParameter(parameterIndex, x.toString());
535:                real.setTime(parameterIndex, x);
536:            }
537:
538:            /**
539:             * @see PreparedStatement#setTimestamp(int, Timestamp)
540:             */
541:            public void setTimestamp(int parameterIndex, Timestamp x)
542:                    throws SQLException {
543:                registerInputParameter(parameterIndex, x.toString());
544:                real.setTimestamp(parameterIndex, x);
545:            }
546:
547:            /**
548:             * @see PreparedStatement#setDate(int, Date, Calendar)
549:             */
550:            public void setDate(int parameterIndex, Date x, Calendar cal)
551:                    throws SQLException {
552:                registerInputParameter(parameterIndex, x.toString());
553:                real.setDate(parameterIndex, x, cal);
554:            }
555:
556:            /**
557:             * @see PreparedStatement#setTime(int, Time, Calendar)
558:             */
559:            public void setTime(int parameterIndex, Time x, Calendar cal)
560:                    throws SQLException {
561:                registerInputParameter(parameterIndex, x.toString());
562:                real.setTime(parameterIndex, x, cal);
563:            }
564:
565:            /**
566:             * @see PreparedStatement#setTimestamp(int, Timestamp, Calendar)
567:             */
568:            public void setTimestamp(int parameterIndex, Timestamp x,
569:                    Calendar cal) throws SQLException {
570:                registerInputParameter(parameterIndex, x.toString());
571:                real.setTimestamp(parameterIndex, x, cal);
572:            }
573:
574:            /**
575:             * @see java.sql.Statement#executeBatch()
576:             */
577:            public int[] executeBatch() throws SQLException {
578:                // Adds all the prepared statements in the logged batches
579:                for (int i = 0; i < parameters.size() - 1; i++) {
580:                    batch.add(getDisplayableSql(i));
581:                }
582:
583:                // Executes (and logs) all the batches
584:                return super.executeBatch();
585:            }
586:        }
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