| 1 | /* |
| 2 | Copyright (C) 2002-2004 MySQL AB |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of version 2 of the GNU General Public License as |
| 6 | published by the Free Software Foundation. |
| 7 | |
| 8 | There are special exceptions to the terms and conditions of the GPL |
| 9 | as it is applied to this software. View the full text of the |
| 10 | exception in file EXCEPTIONS-CONNECTOR-J in the directory of this |
| 11 | software distribution. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | |
| 22 | |
| 23 | |
| 24 | */ |
| 25 | package com.mysql.jdbc; |
| 26 | |
| 27 | import com.mysql.jdbc.exceptions.MySQLTimeoutException; |
| 28 | import com.mysql.jdbc.profiler.ProfileEventSink; |
| 29 | import com.mysql.jdbc.profiler.ProfilerEvent; |
| 30 | import com.mysql.jdbc.util.LRUCache; |
| 31 | |
| 32 | import java.sql.DataTruncation; |
| 33 | import java.sql.SQLException; |
| 34 | import java.sql.SQLWarning; |
| 35 | import java.sql.Types; |
| 36 | |
| 37 | import java.util.ArrayList; |
| 38 | import java.util.Calendar; |
| 39 | import java.util.GregorianCalendar; |
| 40 | import java.util.Iterator; |
| 41 | import java.util.List; |
| 42 | import java.util.Locale; |
| 43 | import java.util.Map; |
| 44 | import java.util.TimerTask; |
| 45 | |
| 46 | /** |
| 47 | * A Statement object is used for executing a static SQL statement and obtaining |
| 48 | * the results produced by it. |
| 49 | * |
| 50 | * <p> |
| 51 | * Only one ResultSet per Statement can be open at any point in time. Therefore, |
| 52 | * if the reading of one ResultSet is interleaved with the reading of another, |
| 53 | * each must have been generated by different Statements. All statement execute |
| 54 | * methods implicitly close a statement's current ResultSet if an open one |
| 55 | * exists. |
| 56 | * </p> |
| 57 | * |
| 58 | * @author Mark Matthews |
| 59 | * @version $Id: Statement.java 4624 2005-11-28 14:24:29 -0600 (Mon, 28 Nov |
| 60 | * 2005) mmatthews $ |
| 61 | * |
| 62 | * @see java.sql.Statement |
| 63 | * @see ResultSet |
| 64 | */ |
| 65 | public class Statement implements java.sql.Statement { |
| 66 | class CachedResultSetMetaData { |
| 67 | /** Map column names (and all of their permutations) to column indices */ |
| 68 | Map columnNameToIndex = null; |
| 69 | |
| 70 | /** Cached Field info */ |
| 71 | Field[] fields; |
| 72 | |
| 73 | /** Map of fully-specified column names to column indices */ |
| 74 | Map fullColumnNameToIndex = null; |
| 75 | |
| 76 | /** Cached ResultSetMetaData */ |
| 77 | java.sql.ResultSetMetaData metadata; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Thread used to implement query timeouts...Eventually we could be more |
| 82 | * efficient and have one thread with timers, but this is a straightforward |
| 83 | * and simple way to implement a feature that isn't used all that often. |
| 84 | */ |
| 85 | class CancelTask extends TimerTask { |
| 86 | |
| 87 | long connectionId = 0; |
| 88 | |
| 89 | CancelTask() throws SQLException { |
| 90 | connectionId = connection.getIO().getThreadId(); |
| 91 | } |
| 92 | |
| 93 | public void run() { |
| 94 | |
| 95 | Thread cancelThread = new Thread() { |
| 96 | |
| 97 | public void run() { |
| 98 | Connection cancelConn = null; |
| 99 | java.sql.Statement cancelStmt = null; |
| 100 | |
| 101 | try { |
| 102 | cancelConn = connection.duplicate(); |
| 103 | cancelStmt = cancelConn.createStatement(); |
| 104 | cancelStmt.execute("KILL QUERY " + connectionId); |
| 105 | wasCancelled = true; |
| 106 | } catch (SQLException sqlEx) { |
| 107 | throw new RuntimeException(sqlEx.toString()); |
| 108 | } finally { |
| 109 | if (cancelStmt != null) { |
| 110 | try { |
| 111 | cancelStmt.close(); |
| 112 | } catch (SQLException sqlEx) { |
| 113 | throw new RuntimeException(sqlEx.toString()); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | if (cancelConn != null) { |
| 118 | try { |
| 119 | cancelConn.close(); |
| 120 | } catch (SQLException sqlEx) { |
| 121 | throw new RuntimeException(sqlEx.toString()); |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | }; |
| 127 | |
| 128 | cancelThread.start(); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /** Used to generate IDs when profiling. */ |
| 133 | protected static int statementCounter = 1; |
| 134 | |
| 135 | public final static byte USES_VARIABLES_FALSE = 0; |
| 136 | |
| 137 | public final static byte USES_VARIABLES_TRUE = 1; |
| 138 | |
| 139 | public final static byte USES_VARIABLES_UNKNOWN = -1; |
| 140 | |
| 141 | protected boolean wasCancelled = false; |
| 142 | |
| 143 | /** Holds batched commands */ |
| 144 | protected List batchedArgs; |
| 145 | |
| 146 | /** The character converter to use (if available) */ |
| 147 | protected SingleByteCharsetConverter charConverter = null; |
| 148 | |
| 149 | /** The character encoding to use (if available) */ |
| 150 | protected String charEncoding = null; |
| 151 | |
| 152 | /** The connection that created us */ |
| 153 | protected Connection connection = null; |
| 154 | |
| 155 | protected long connectionId = 0; |
| 156 | |
| 157 | /** The catalog in use */ |
| 158 | protected String currentCatalog = null; |
| 159 | |
| 160 | /** Should we process escape codes? */ |
| 161 | protected boolean doEscapeProcessing = true; |
| 162 | |
| 163 | /** If we're profiling, where should events go to? */ |
| 164 | protected ProfileEventSink eventSink = null; |
| 165 | |
| 166 | /** The number of rows to fetch at a time (currently ignored) */ |
| 167 | private int fetchSize = 0; |
| 168 | |
| 169 | /** Has this statement been closed? */ |
| 170 | protected boolean isClosed = false; |
| 171 | |
| 172 | /** The auto_increment value for the last insert */ |
| 173 | protected long lastInsertId = -1; |
| 174 | |
| 175 | /** The max field size for this statement */ |
| 176 | protected int maxFieldSize = MysqlIO.getMaxBuf(); |
| 177 | |
| 178 | /** |
| 179 | * The maximum number of rows to return for this statement (-1 means _all_ |
| 180 | * rows) |
| 181 | */ |
| 182 | protected int maxRows = -1; |
| 183 | |
| 184 | /** Has someone changed this for this statement? */ |
| 185 | protected boolean maxRowsChanged = false; |
| 186 | |
| 187 | /** List of currently-open ResultSets */ |
| 188 | protected List openResults = new ArrayList(); |
| 189 | |
| 190 | /** Are we in pedantic mode? */ |
| 191 | protected boolean pedantic = false; |
| 192 | |
| 193 | /** |
| 194 | * Where this statement was created, only used if profileSql or |
| 195 | * useUsageAdvisor set to true. |
| 196 | */ |
| 197 | protected Throwable pointOfOrigin; |
| 198 | |
| 199 | /** Should we profile? */ |
| 200 | protected boolean profileSQL = false; |
| 201 | |
| 202 | /** The current results */ |
| 203 | protected ResultSet results = null; |
| 204 | |
| 205 | /** The concurrency for this result set (updatable or not) */ |
| 206 | protected int resultSetConcurrency = 0; |
| 207 | |
| 208 | /** Cache of ResultSet metadata */ |
| 209 | protected LRUCache resultSetMetadataCache; |
| 210 | |
| 211 | /** The type of this result set (scroll sensitive or in-sensitive) */ |
| 212 | protected int resultSetType = 0; |
| 213 | |
| 214 | /** Used to identify this statement when profiling. */ |
| 215 | protected int statementId; |
| 216 | |
| 217 | /** The timeout for a query */ |
| 218 | protected int timeout = 0; |
| 219 | |
| 220 | /** The update count for this statement */ |
| 221 | protected long updateCount = -1; |
| 222 | |
| 223 | /** Should we use the usage advisor? */ |
| 224 | protected boolean useUsageAdvisor = false; |
| 225 | |
| 226 | /** The warnings chain. */ |
| 227 | protected SQLWarning warningChain = null; |
| 228 | |
| 229 | /** |
| 230 | * Should this statement hold results open over .close() irregardless of |
| 231 | * connection's setting? |
| 232 | */ |
| 233 | protected boolean holdResultsOpenOverClose = false; |
| 234 | |
| 235 | protected ArrayList batchedGeneratedKeys = null; |
| 236 | |
| 237 | protected boolean retrieveGeneratedKeys = false; |
| 238 | |
| 239 | /** |
| 240 | * Constructor for a Statement. |
| 241 | * |
| 242 | * @param c |
| 243 | * the Connection instantation that creates us |
| 244 | * @param catalog |
| 245 | * the database name in use when we were created |
| 246 | * |
| 247 | * @throws SQLException |
| 248 | * if an error occurs. |
| 249 | */ |
| 250 | public Statement(Connection c, String catalog) throws SQLException { |
| 251 | if ((c == null) || c.isClosed()) { |
| 252 | throw SQLError.createSQLException( |
| 253 | Messages.getString("Statement.0"), //$NON-NLS-1$ |
| 254 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN); //$NON-NLS-1$ //$NON-NLS-2$ |
| 255 | } |
| 256 | |
| 257 | this.connection = c; |
| 258 | this.connectionId = this.connection.getId(); |
| 259 | |
| 260 | this.currentCatalog = catalog; |
| 261 | this.pedantic = this.connection.getPedantic(); |
| 262 | |
| 263 | if (!this.connection.getDontTrackOpenResources()) { |
| 264 | this.connection.registerStatement(this); |
| 265 | } |
| 266 | |
| 267 | // |
| 268 | // Adjust, if we know it |
| 269 | // |
| 270 | |
| 271 | if (this.connection != null) { |
| 272 | this.maxFieldSize = this.connection.getMaxAllowedPacket(); |
| 273 | |
| 274 | int defaultFetchSize = this.connection.getDefaultFetchSize(); |
| 275 | |
| 276 | if (defaultFetchSize != 0) { |
| 277 | setFetchSize(defaultFetchSize); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | if (this.connection.getUseUnicode()) { |
| 282 | this.charEncoding = this.connection.getEncoding(); |
| 283 | |
| 284 | this.charConverter = this.connection |
| 285 | .getCharsetConverter(this.charEncoding); |
| 286 | } |
| 287 | |
| 288 | boolean profiling = this.connection.getProfileSql() |
| 289 | || this.connection.getUseUsageAdvisor(); |
| 290 | |
| 291 | if (this.connection.getAutoGenerateTestcaseScript() || profiling) { |
| 292 | this.statementId = statementCounter++; |
| 293 | } |
| 294 | |
| 295 | if (profiling) { |
| 296 | this.pointOfOrigin = new Throwable(); |
| 297 | this.profileSQL = this.connection.getProfileSql(); |
| 298 | this.useUsageAdvisor = this.connection.getUseUsageAdvisor(); |
| 299 | this.eventSink = ProfileEventSink.getInstance(this.connection); |
| 300 | } |
| 301 | |
| 302 | int maxRowsConn = this.connection.getMaxRows(); |
| 303 | |
| 304 | if (maxRowsConn != -1) { |
| 305 | setMaxRows(maxRowsConn); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * DOCUMENT ME! |
| 311 | * |
| 312 | * @param sql |
| 313 | * DOCUMENT ME! |
| 314 | * |
| 315 | * @throws SQLException |
| 316 | * DOCUMENT ME! |
| 317 | */ |
| 318 | public synchronized void addBatch(String sql) throws SQLException { |
| 319 | if (this.batchedArgs == null) { |
| 320 | this.batchedArgs = new ArrayList(); |
| 321 | } |
| 322 | |
| 323 | if (sql != null) { |
| 324 | this.batchedArgs.add(sql); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * Cancels this Statement object if both the DBMS and driver support |
| 330 | * aborting an SQL statement. This method can be used by one thread to |
| 331 | * cancel a statement that is being executed by another thread. |
| 332 | */ |
| 333 | public void cancel() throws SQLException { |
| 334 | if (!this.isClosed && |
| 335 | this.connection != null && |
| 336 | this.connection.versionMeetsMinimum(5, 0, 0)) { |
| 337 | Connection cancelConn = null; |
| 338 | java.sql.Statement cancelStmt = null; |
| 339 | |
| 340 | try { |
| 341 | cancelConn = this.connection.duplicate(); |
| 342 | cancelStmt = cancelConn.createStatement(); |
| 343 | cancelStmt.execute("KILL QUERY " |
| 344 | + this.connection.getIO().getThreadId()); |
| 345 | this.wasCancelled = true; |
| 346 | } finally { |
| 347 | if (cancelStmt != null) { |
| 348 | cancelStmt.close(); |
| 349 | } |
| 350 | |
| 351 | if (cancelConn != null) { |
| 352 | cancelConn.close(); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | // --------------------------JDBC 2.0----------------------------- |
| 360 | |
| 361 | /** |
| 362 | * Checks if closed() has been called, and throws an exception if so |
| 363 | * |
| 364 | * @throws SQLException |
| 365 | * if this statement has been closed |
| 366 | */ |
| 367 | protected void checkClosed() throws SQLException { |
| 368 | if (this.isClosed) { |
| 369 | throw SQLError.createSQLException(Messages |
| 370 | .getString("Statement.49"), //$NON-NLS-1$ |
| 371 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN); //$NON-NLS-1$ |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Checks if the given SQL query with the given first non-ws char is a DML |
| 377 | * statement. Throws an exception if it is. |
| 378 | * |
| 379 | * @param sql |
| 380 | * the SQL to check |
| 381 | * @param firstStatementChar |
| 382 | * the UC first non-ws char of the statement |
| 383 | * |
| 384 | * @throws SQLException |
| 385 | * if the statement contains DML |
| 386 | */ |
| 387 | protected void checkForDml(String sql, char firstStatementChar) |
| 388 | throws SQLException { |
| 389 | if ((firstStatementChar == 'I') || (firstStatementChar == 'U') |
| 390 | || (firstStatementChar == 'D') || (firstStatementChar == 'A') |
| 391 | || (firstStatementChar == 'C')) { |
| 392 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "INSERT") //$NON-NLS-1$ |
| 393 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "UPDATE") //$NON-NLS-1$ |
| 394 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "DELETE") //$NON-NLS-1$ |
| 395 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "DROP") //$NON-NLS-1$ |
| 396 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "CREATE") //$NON-NLS-1$ |
| 397 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "ALTER")) { //$NON-NLS-1$ |
| 398 | throw SQLError.createSQLException(Messages |
| 399 | .getString("Statement.57"), //$NON-NLS-1$ |
| 400 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 401 | } |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Method checkNullOrEmptyQuery. |
| 407 | * |
| 408 | * @param sql |
| 409 | * the SQL to check |
| 410 | * |
| 411 | * @throws SQLException |
| 412 | * if query is null or empty. |
| 413 | */ |
| 414 | protected void checkNullOrEmptyQuery(String sql) throws SQLException { |
| 415 | if (sql == null) { |
| 416 | throw SQLError.createSQLException(Messages |
| 417 | .getString("Statement.59"), //$NON-NLS-1$ |
| 418 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 419 | } |
| 420 | |
| 421 | if (sql.length() == 0) { |
| 422 | throw SQLError.createSQLException(Messages |
| 423 | .getString("Statement.61"), //$NON-NLS-1$ |
| 424 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * JDBC 2.0 Make the set of commands in the current batch empty. This method |
| 430 | * is optional. |
| 431 | * |
| 432 | * @exception SQLException |
| 433 | * if a database-access error occurs, or the driver does not |
| 434 | * support batch statements |
| 435 | */ |
| 436 | public synchronized void clearBatch() throws SQLException { |
| 437 | if (this.batchedArgs != null) { |
| 438 | this.batchedArgs.clear(); |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * After this call, getWarnings returns null until a new warning is reported |
| 444 | * for this Statement. |
| 445 | * |
| 446 | * @exception SQLException |
| 447 | * if a database access error occurs (why?) |
| 448 | */ |
| 449 | public void clearWarnings() throws SQLException { |
| 450 | this.warningChain = null; |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * In many cases, it is desirable to immediately release a Statement's |
| 455 | * database and JDBC resources instead of waiting for this to happen when it |
| 456 | * is automatically closed. The close method provides this immediate |
| 457 | * release. |
| 458 | * |
| 459 | * <p> |
| 460 | * <B>Note:</B> A Statement is automatically closed when it is garbage |
| 461 | * collected. When a Statement is closed, its current ResultSet, if one |
| 462 | * exists, is also closed. |
| 463 | * </p> |
| 464 | * |
| 465 | * @exception SQLException |
| 466 | * if a database access error occurs |
| 467 | */ |
| 468 | public void close() throws SQLException { |
| 469 | realClose(true, true); |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Close any open result sets that have been 'held open' |
| 474 | */ |
| 475 | protected void closeAllOpenResults() { |
| 476 | if (this.openResults != null) { |
| 477 | for (Iterator iter = this.openResults.iterator(); iter.hasNext();) { |
| 478 | ResultSet element = (ResultSet) iter.next(); |
| 479 | |
| 480 | try { |
| 481 | element.realClose(false); |
| 482 | } catch (SQLException sqlEx) { |
| 483 | AssertionFailedException.shouldNotHappen(sqlEx); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | this.openResults.clear(); |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * @param sql |
| 493 | * @return |
| 494 | */ |
| 495 | private ResultSet createResultSetUsingServerFetch(String sql) |
| 496 | throws SQLException { |
| 497 | java.sql.PreparedStatement pStmt = this.connection.prepareStatement( |
| 498 | sql, this.resultSetType, this.resultSetConcurrency); |
| 499 | |
| 500 | pStmt.setFetchSize(this.fetchSize); |
| 501 | |
| 502 | pStmt.execute(); |
| 503 | |
| 504 | // |
| 505 | // Need to be able to get resultset irrespective if we issued DML or |
| 506 | // not to make this work. |
| 507 | // |
| 508 | ResultSet rs = ((com.mysql.jdbc.Statement) pStmt) |
| 509 | .getResultSetInternal(); |
| 510 | |
| 511 | rs |
| 512 | .setStatementUsedForFetchingRows((com.mysql.jdbc.PreparedStatement) pStmt); |
| 513 | |
| 514 | this.results = rs; |
| 515 | |
| 516 | return rs; |
| 517 | } |
| 518 | |
| 519 | /** |
| 520 | * We only stream result sets when they are forward-only, read-only, and the |
| 521 | * fetch size has been set to Integer.MIN_VALUE |
| 522 | * |
| 523 | * @return true if this result set should be streamed row at-a-time, rather |
| 524 | * than read all at once. |
| 525 | */ |
| 526 | protected boolean createStreamingResultSet() { |
| 527 | return ((this.resultSetType == java.sql.ResultSet.TYPE_FORWARD_ONLY) |
| 528 | && (this.resultSetConcurrency == java.sql.ResultSet.CONCUR_READ_ONLY) && (this.fetchSize == Integer.MIN_VALUE)); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Workaround for containers that 'check' for sane values of |
| 533 | * Statement.setFetchSize(). |
| 534 | * |
| 535 | * @throws SQLException |
| 536 | */ |
| 537 | public void enableStreamingResults() throws SQLException { |
| 538 | setFetchSize(Integer.MIN_VALUE); |
| 539 | setResultSetType(ResultSet.TYPE_FORWARD_ONLY); |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Execute a SQL statement that may return multiple results. We don't have |
| 544 | * to worry about this since we do not support multiple ResultSets. You can |
| 545 | * use getResultSet or getUpdateCount to retrieve the result. |
| 546 | * |
| 547 | * @param sql |
| 548 | * any SQL statement |
| 549 | * |
| 550 | * @return true if the next result is a ResulSet, false if it is an update |
| 551 | * count or there are no more results |
| 552 | * |
| 553 | * @exception SQLException |
| 554 | * if a database access error occurs |
| 555 | */ |
| 556 | public boolean execute(String sql) throws SQLException { |
| 557 | checkClosed(); |
| 558 | |
| 559 | |
| 560 | Connection locallyScopedConn = this.connection; |
| 561 | |
| 562 | synchronized (locallyScopedConn.getMutex()) { |
| 563 | this.wasCancelled = false; |
| 564 | |
| 565 | checkNullOrEmptyQuery(sql); |
| 566 | |
| 567 | checkClosed(); |
| 568 | |
| 569 | char firstNonWsChar = StringUtils.firstNonWsCharUc(sql); |
| 570 | |
| 571 | boolean isSelect = true; |
| 572 | |
| 573 | if (firstNonWsChar != 'S') { |
| 574 | isSelect = false; |
| 575 | |
| 576 | if (locallyScopedConn.isReadOnly()) { |
| 577 | throw SQLError.createSQLException(Messages |
| 578 | .getString("Statement.27") //$NON-NLS-1$ |
| 579 | + Messages.getString("Statement.28"), //$NON-NLS-1$ |
| 580 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | if (this.doEscapeProcessing) { |
| 585 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 586 | locallyScopedConn.serverSupportsConvertFn(), locallyScopedConn); |
| 587 | |
| 588 | if (escapedSqlResult instanceof String) { |
| 589 | sql = (String) escapedSqlResult; |
| 590 | } else { |
| 591 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | if (this.results != null) { |
| 596 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
| 597 | this.results.realClose(false); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | CachedResultSetMetaData cachedMetaData = null; |
| 602 | |
| 603 | ResultSet rs = null; |
| 604 | |
| 605 | // If there isn't a limit clause in the SQL |
| 606 | // then limit the number of rows to return in |
| 607 | // an efficient manner. Only do this if |
| 608 | // setMaxRows() hasn't been used on any Statements |
| 609 | // generated from the current Connection (saves |
| 610 | // a query, and network traffic). |
| 611 | |
| 612 | this.batchedGeneratedKeys = null; |
| 613 | |
| 614 | if (useServerFetch()) { |
| 615 | rs = createResultSetUsingServerFetch(sql); |
| 616 | } else { |
| 617 | CancelTask timeoutTask = null; |
| 618 | |
| 619 | try { |
| 620 | if (this.timeout != 0 |
| 621 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
| 622 | timeoutTask = new CancelTask(); |
| 623 | Connection.getCancelTimer().schedule(timeoutTask, |
| 624 | this.timeout); |
| 625 | } |
| 626 | |
| 627 | String oldCatalog = null; |
| 628 | |
| 629 | if (!locallyScopedConn.getCatalog().equals( |
| 630 | this.currentCatalog)) { |
| 631 | oldCatalog = locallyScopedConn.getCatalog(); |
| 632 | locallyScopedConn.setCatalog(this.currentCatalog); |
| 633 | } |
| 634 | |
| 635 | // |
| 636 | // Check if we have cached metadata for this query... |
| 637 | // |
| 638 | if (locallyScopedConn.getCacheResultSetMetadata()) { |
| 639 | cachedMetaData = getCachedMetaData(sql); |
| 640 | } |
| 641 | |
| 642 | // |
| 643 | // Only apply max_rows to selects |
| 644 | // |
| 645 | if (locallyScopedConn.useMaxRows()) { |
| 646 | int rowLimit = -1; |
| 647 | |
| 648 | if (isSelect) { |
| 649 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
| 650 | rowLimit = this.maxRows; |
| 651 | } else { |
| 652 | if (this.maxRows <= 0) { |
| 653 | locallyScopedConn |
| 654 | .execSQL( |
| 655 | this, |
| 656 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, //$NON-NLS-1$ |
| 657 | null, |
| 658 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 659 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 660 | false, |
| 661 | this.currentCatalog, true); //$NON-NLS-1$ |
| 662 | } else { |
| 663 | locallyScopedConn |
| 664 | .execSQL( |
| 665 | this, |
| 666 | "SET OPTION SQL_SELECT_LIMIT=" + this.maxRows, //$NON-NLS-1$ |
| 667 | -1, |
| 668 | null, |
| 669 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 670 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 671 | false, |
| 672 | this.currentCatalog, true); //$NON-NLS-1$ |
| 673 | } |
| 674 | } |
| 675 | } else { |
| 676 | locallyScopedConn |
| 677 | .execSQL( |
| 678 | this, |
| 679 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, null, //$NON-NLS-1$ |
| 680 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 681 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 682 | false, this.currentCatalog, |
| 683 | true); //$NON-NLS-1$ |
| 684 | } |
| 685 | |
| 686 | // Finally, execute the query |
| 687 | rs = locallyScopedConn.execSQL(this, sql, rowLimit, null, |
| 688 | this.resultSetType, this.resultSetConcurrency, |
| 689 | createStreamingResultSet(), |
| 690 | this.currentCatalog, (cachedMetaData == null)); |
| 691 | } else { |
| 692 | rs = locallyScopedConn.execSQL(this, sql, -1, null, |
| 693 | this.resultSetType, this.resultSetConcurrency, |
| 694 | createStreamingResultSet(), |
| 695 | this.currentCatalog, (cachedMetaData == null)); |
| 696 | } |
| 697 | |
| 698 | if (timeoutTask != null) { |
| 699 | timeoutTask.cancel(); |
| 700 | timeoutTask = null; |
| 701 | } |
| 702 | |
| 703 | if (oldCatalog != null) { |
| 704 | locallyScopedConn.setCatalog(oldCatalog); |
| 705 | } |
| 706 | |
| 707 | if (this.wasCancelled) { |
| 708 | this.wasCancelled = false; |
| 709 | throw new MySQLTimeoutException(); |
| 710 | } |
| 711 | } finally { |
| 712 | if (timeoutTask != null) { |
| 713 | timeoutTask.cancel(); |
| 714 | } |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | this.lastInsertId = rs.getUpdateID(); |
| 719 | |
| 720 | if (rs != null) { |
| 721 | this.results = rs; |
| 722 | |
| 723 | rs.setFirstCharOfQuery(firstNonWsChar); |
| 724 | |
| 725 | if (rs.reallyResult()) { |
| 726 | if (cachedMetaData != null) { |
| 727 | initializeResultsMetadataFromCache(sql, cachedMetaData, |
| 728 | this.results); |
| 729 | } else { |
| 730 | if (this.connection.getCacheResultSetMetadata()) { |
| 731 | initializeResultsMetadataFromCache(sql, |
| 732 | null /* will be created */, this.results); |
| 733 | } |
| 734 | } |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | return ((rs != null) && rs.reallyResult()); |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * @see Statement#execute(String, int) |
| 744 | */ |
| 745 | public boolean execute(String sql, int returnGeneratedKeys) |
| 746 | throws SQLException { |
| 747 | |
| 748 | |
| 749 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
| 750 | checkClosed(); |
| 751 | |
| 752 | Connection locallyScopedConn = this.connection; |
| 753 | |
| 754 | synchronized (locallyScopedConn.getMutex()) { |
| 755 | // If this is a 'REPLACE' query, we need to be able to parse |
| 756 | // the 'info' message returned from the server to determine |
| 757 | // the actual number of keys generated. |
| 758 | boolean readInfoMsgState = this.connection |
| 759 | .isReadInfoMsgEnabled(); |
| 760 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 761 | |
| 762 | try { |
| 763 | return execute(sql); |
| 764 | } finally { |
| 765 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 766 | } |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | return execute(sql); |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * @see Statement#execute(String, int[]) |
| 775 | */ |
| 776 | public boolean execute(String sql, int[] generatedKeyIndices) |
| 777 | throws SQLException { |
| 778 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
| 779 | checkClosed(); |
| 780 | |
| 781 | Connection locallyScopedConn = this.connection; |
| 782 | |
| 783 | synchronized (locallyScopedConn.getMutex()) { |
| 784 | // If this is a 'REPLACE' query, we need to be able to parse |
| 785 | // the 'info' message returned from the server to determine |
| 786 | // the actual number of keys generated. |
| 787 | boolean readInfoMsgState = locallyScopedConn |
| 788 | .isReadInfoMsgEnabled(); |
| 789 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 790 | |
| 791 | try { |
| 792 | return execute(sql); |
| 793 | } finally { |
| 794 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 795 | } |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | return execute(sql); |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * @see Statement#execute(String, String[]) |
| 804 | */ |
| 805 | public boolean execute(String sql, String[] generatedKeyNames) |
| 806 | throws SQLException { |
| 807 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
| 808 | checkClosed(); |
| 809 | |
| 810 | Connection locallyScopedConn = this.connection; |
| 811 | |
| 812 | synchronized (locallyScopedConn.getMutex()) { |
| 813 | // If this is a 'REPLACE' query, we need to be able to parse |
| 814 | // the 'info' message returned from the server to determine |
| 815 | // the actual number of keys generated. |
| 816 | boolean readInfoMsgState = this.connection |
| 817 | .isReadInfoMsgEnabled(); |
| 818 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 819 | |
| 820 | try { |
| 821 | return execute(sql); |
| 822 | } finally { |
| 823 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 824 | } |
| 825 | } |
| 826 | } |
| 827 | |
| 828 | return execute(sql); |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * JDBC 2.0 Submit a batch of commands to the database for execution. This |
| 833 | * method is optional. |
| 834 | * |
| 835 | * @return an array of update counts containing one element for each command |
| 836 | * in the batch. The array is ordered according to the order in |
| 837 | * which commands were inserted into the batch |
| 838 | * |
| 839 | * @exception SQLException |
| 840 | * if a database-access error occurs, or the driver does not |
| 841 | * support batch statements |
| 842 | * @throws java.sql.BatchUpdateException |
| 843 | * DOCUMENT ME! |
| 844 | */ |
| 845 | public synchronized int[] executeBatch() throws SQLException { |
| 846 | checkClosed(); |
| 847 | |
| 848 | Connection locallyScopedConn = this.connection; |
| 849 | |
| 850 | if (locallyScopedConn.isReadOnly()) { |
| 851 | throw SQLError.createSQLException(Messages |
| 852 | .getString("Statement.34") //$NON-NLS-1$ |
| 853 | + Messages.getString("Statement.35"), //$NON-NLS-1$ |
| 854 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 855 | } |
| 856 | |
| 857 | if (this.results != null) { |
| 858 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
| 859 | this.results.realClose(false); |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | synchronized (locallyScopedConn.getMutex()) { |
| 864 | try { |
| 865 | this.retrieveGeneratedKeys = true; |
| 866 | |
| 867 | int[] updateCounts = null; |
| 868 | |
| 869 | if (this.batchedArgs != null) { |
| 870 | int nbrCommands = this.batchedArgs.size(); |
| 871 | |
| 872 | this.batchedGeneratedKeys = new ArrayList(this.batchedArgs.size()); |
| 873 | |
| 874 | boolean multiQueriesEnabled = locallyScopedConn.getAllowMultiQueries(); |
| 875 | |
| 876 | if (locallyScopedConn.versionMeetsMinimum(4, 1, 1) && |
| 877 | (multiQueriesEnabled || |
| 878 | (locallyScopedConn.getRewriteBatchedStatements() && |
| 879 | nbrCommands > 4))) { |
| 880 | return executeBatchUsingMultiQueries(multiQueriesEnabled, nbrCommands); |
| 881 | } |
| 882 | |
| 883 | updateCounts = new int[nbrCommands]; |
| 884 | |
| 885 | for (int i = 0; i < nbrCommands; i++) { |
| 886 | updateCounts[i] = -3; |
| 887 | } |
| 888 | |
| 889 | SQLException sqlEx = null; |
| 890 | |
| 891 | int commandIndex = 0; |
| 892 | |
| 893 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
| 894 | try { |
| 895 | updateCounts[commandIndex] = executeUpdate((String) this.batchedArgs |
| 896 | .get(commandIndex), true); |
| 897 | getBatchedGeneratedKeys(); |
| 898 | } catch (SQLException ex) { |
| 899 | updateCounts[commandIndex] = EXECUTE_FAILED; |
| 900 | |
| 901 | if (locallyScopedConn.getContinueBatchOnError()) { |
| 902 | sqlEx = ex; |
| 903 | } else { |
| 904 | int[] newUpdateCounts = new int[commandIndex]; |
| 905 | System.arraycopy(updateCounts, 0, |
| 906 | newUpdateCounts, 0, commandIndex); |
| 907 | |
| 908 | throw new java.sql.BatchUpdateException(ex |
| 909 | .getMessage(), ex.getSQLState(), ex |
| 910 | .getErrorCode(), newUpdateCounts); |
| 911 | } |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | if (sqlEx != null) { |
| 916 | throw new java.sql.BatchUpdateException(sqlEx |
| 917 | .getMessage(), sqlEx.getSQLState(), sqlEx |
| 918 | .getErrorCode(), updateCounts); |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | return (updateCounts != null) ? updateCounts : new int[0]; |
| 923 | } finally { |
| 924 | this.retrieveGeneratedKeys = false; |
| 925 | |
| 926 | clearBatch(); |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * Rewrites batch into a single query to send to the server. This method |
| 933 | * will constrain each batch to be shorter than max_allowed_packet on the |
| 934 | * server. |
| 935 | * |
| 936 | * @return update counts in the same manner as executeBatch() |
| 937 | * @throws SQLException |
| 938 | */ |
| 939 | private int[] executeBatchUsingMultiQueries(boolean multiQueriesEnabled, |
| 940 | int nbrCommands) throws SQLException { |
| 941 | |
| 942 | Connection locallyScopedConn = this.connection; |
| 943 | |
| 944 | if (!multiQueriesEnabled) { |
| 945 | locallyScopedConn.getIO().enableMultiQueries(); |
| 946 | } |
| 947 | |
| 948 | try { |
| 949 | int[] updateCounts = new int[nbrCommands]; |
| 950 | |
| 951 | for (int i = 0; i < nbrCommands; i++) { |
| 952 | updateCounts[i] = -3; |
| 953 | } |
| 954 | |
| 955 | int commandIndex = 0; |
| 956 | |
| 957 | StringBuffer queryBuf = new StringBuffer(); |
| 958 | |
| 959 | java.sql.Statement batchStmt = locallyScopedConn.createStatement(); |
| 960 | |
| 961 | int counter = 0; |
| 962 | |
| 963 | int numberOfBytesPerChar = 1; |
| 964 | |
| 965 | String connectionEncoding = locallyScopedConn.getEncoding(); |
| 966 | |
| 967 | if (StringUtils.startsWithIgnoreCase(connectionEncoding, "utf")) { |
| 968 | numberOfBytesPerChar = 3; |
| 969 | } else if (CharsetMapping.isMultibyteCharset(connectionEncoding)) { |
| 970 | numberOfBytesPerChar = 2; |
| 971 | } |
| 972 | |
| 973 | int escapeAdjust = 1; |
| 974 | |
| 975 | if (this.doEscapeProcessing) { |
| 976 | escapeAdjust = 2; /* We assume packet _could_ grow by this amount, as we're not |
| 977 | sure how big statement will end up after |
| 978 | escape processing */ |
| 979 | } |
| 980 | |
| 981 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
| 982 | String nextQuery = (String) this.batchedArgs.get(commandIndex); |
| 983 | |
| 984 | if (((((queryBuf.length() + nextQuery.length()) |
| 985 | * numberOfBytesPerChar) + 1 /* for semicolon */ |
| 986 | + MysqlIO.HEADER_LENGTH) * escapeAdjust) + 32 > this.connection |
| 987 | .getMaxAllowedPacket()) { |
| 988 | batchStmt.execute(queryBuf.toString()); |
| 989 | |
| 990 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 991 | long generatedKeyStart = ((com.mysql.jdbc.Statement)batchStmt).getLastInsertID(); |
| 992 | byte[][] row = new byte[1][]; |
| 993 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 994 | this.batchedGeneratedKeys.add(row); |
| 995 | |
| 996 | while (batchStmt.getMoreResults() |
| 997 | || batchStmt.getUpdateCount() != -1) { |
| 998 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 999 | row = new byte[1][]; |
| 1000 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 1001 | this.batchedGeneratedKeys.add(row); |
| 1002 | } |
| 1003 | |
| 1004 | queryBuf = new StringBuffer(); |
| 1005 | } |
| 1006 | |
| 1007 | queryBuf.append(nextQuery); |
| 1008 | queryBuf.append(";"); |
| 1009 | } |
| 1010 | |
| 1011 | if (queryBuf.length() > 0) { |
| 1012 | batchStmt.execute(queryBuf.toString()); |
| 1013 | |
| 1014 | long generatedKeyStart = ((com.mysql.jdbc.Statement)batchStmt).getLastInsertID(); |
| 1015 | byte[][] row = new byte[1][]; |
| 1016 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 1017 | this.batchedGeneratedKeys.add(row); |
| 1018 | |
| 1019 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 1020 | |
| 1021 | while (batchStmt.getMoreResults() |
| 1022 | || batchStmt.getUpdateCount() != -1) { |
| 1023 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 1024 | row = new byte[1][]; |
| 1025 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 1026 | this.batchedGeneratedKeys.add(row); |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | return (updateCounts != null) ? updateCounts : new int[0]; |
| 1031 | } finally { |
| 1032 | if (!multiQueriesEnabled) { |
| 1033 | locallyScopedConn.getIO().disableMultiQueries(); |
| 1034 | } |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | /** |
| 1039 | * Execute a SQL statement that retruns a single ResultSet |
| 1040 | * |
| 1041 | * @param sql |
| 1042 | * typically a static SQL SELECT statement |
| 1043 | * |
| 1044 | * @return a ResulSet that contains the data produced by the query |
| 1045 | * |
| 1046 | * @exception SQLException |
| 1047 | * if a database access error occurs |
| 1048 | */ |
| 1049 | public java.sql.ResultSet executeQuery(String sql) |
| 1050 | throws SQLException { |
| 1051 | checkClosed(); |
| 1052 | |
| 1053 | Connection locallyScopedConn = this.connection; |
| 1054 | |
| 1055 | synchronized (locallyScopedConn.getMutex()) { |
| 1056 | this.wasCancelled = false; |
| 1057 | |
| 1058 | checkNullOrEmptyQuery(sql); |
| 1059 | |
| 1060 | |
| 1061 | |
| 1062 | if (this.doEscapeProcessing) { |
| 1063 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 1064 | locallyScopedConn.serverSupportsConvertFn(), this.connection); |
| 1065 | |
| 1066 | if (escapedSqlResult instanceof String) { |
| 1067 | sql = (String) escapedSqlResult; |
| 1068 | } else { |
| 1069 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | char firstStatementChar = StringUtils.firstNonWsCharUc(sql); |
| 1074 | |
| 1075 | checkForDml(sql, firstStatementChar); |
| 1076 | |
| 1077 | if (this.results != null) { |
| 1078 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
| 1079 | this.results.realClose(false); |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | CachedResultSetMetaData cachedMetaData = null; |
| 1084 | |
| 1085 | // If there isn't a limit clause in the SQL |
| 1086 | // then limit the number of rows to return in |
| 1087 | // an efficient manner. Only do this if |
| 1088 | // setMaxRows() hasn't been used on any Statements |
| 1089 | // generated from the current Connection (saves |
| 1090 | // a query, and network traffic). |
| 1091 | |
| 1092 | if (useServerFetch()) { |
| 1093 | this.results = createResultSetUsingServerFetch(sql); |
| 1094 | |
| 1095 | return this.results; |
| 1096 | } |
| 1097 | |
| 1098 | CancelTask timeoutTask = null; |
| 1099 | |
| 1100 | try { |
| 1101 | if (this.timeout != 0 |
| 1102 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
| 1103 | timeoutTask = new CancelTask(); |
| 1104 | Connection.getCancelTimer().schedule(timeoutTask, |
| 1105 | this.timeout); |
| 1106 | } |
| 1107 | |
| 1108 | String oldCatalog = null; |
| 1109 | |
| 1110 | if (!locallyScopedConn.getCatalog().equals(this.currentCatalog)) { |
| 1111 | oldCatalog = locallyScopedConn.getCatalog(); |
| 1112 | locallyScopedConn.setCatalog(this.currentCatalog); |
| 1113 | } |
| 1114 | |
| 1115 | // |
| 1116 | // Check if we have cached metadata for this query... |
| 1117 | // |
| 1118 | if (locallyScopedConn.getCacheResultSetMetadata()) { |
| 1119 | cachedMetaData = getCachedMetaData(sql); |
| 1120 | } |
| 1121 | |
| 1122 | if (locallyScopedConn.useMaxRows()) { |
| 1123 | // We need to execute this all together |
| 1124 | // So synchronize on the Connection's mutex (because |
| 1125 | // even queries going through there synchronize |
| 1126 | // on the connection |
| 1127 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
| 1128 | this.results = locallyScopedConn.execSQL(this, sql, |
| 1129 | this.maxRows, null, this.resultSetType, |
| 1130 | this.resultSetConcurrency, |
| 1131 | createStreamingResultSet(), |
| 1132 | this.currentCatalog, (cachedMetaData == null)); |
| 1133 | } else { |
| 1134 | if (this.maxRows <= 0) { |
| 1135 | locallyScopedConn |
| 1136 | .execSQL( |
| 1137 | this, |
| 1138 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, null, //$NON-NLS-1$ |
| 1139 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1140 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 1141 | false, this.currentCatalog, |
| 1142 | true); //$NON-NLS-1$ |
| 1143 | } else { |
| 1144 | locallyScopedConn |
| 1145 | .execSQL( |
| 1146 | this, |
| 1147 | "SET OPTION SQL_SELECT_LIMIT=" + this.maxRows, -1, //$NON-NLS-1$ |
| 1148 | null, |
| 1149 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1150 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 1151 | false, this.currentCatalog, |
| 1152 | true); //$NON-NLS-1$ |
| 1153 | } |
| 1154 | |
| 1155 | this.results = locallyScopedConn.execSQL(this, sql, -1, |
| 1156 | null, this.resultSetType, |
| 1157 | this.resultSetConcurrency, |
| 1158 | createStreamingResultSet(), |
| 1159 | this.currentCatalog, (cachedMetaData == null)); |
| 1160 | |
| 1161 | if (oldCatalog != null) { |
| 1162 | locallyScopedConn.setCatalog(oldCatalog); |
| 1163 | } |
| 1164 | } |
| 1165 | } else { |
| 1166 | this.results = locallyScopedConn.execSQL(this, sql, -1, null, |
| 1167 | this.resultSetType, this.resultSetConcurrency, |
| 1168 | createStreamingResultSet(), |
| 1169 | this.currentCatalog, (cachedMetaData == null)); |
| 1170 | } |
| 1171 | |
| 1172 | if (timeoutTask != null) { |
| 1173 | timeoutTask.cancel(); |
| 1174 | timeoutTask = null; |
| 1175 | } |
| 1176 | |
| 1177 | if (oldCatalog != null) { |
| 1178 | locallyScopedConn.setCatalog(oldCatalog); |
| 1179 | } |
| 1180 | |
| 1181 | if (this.wasCancelled) { |
| 1182 | this.wasCancelled = false; |
| 1183 | |
| 1184 | throw new MySQLTimeoutException(); |
| 1185 | } |
| 1186 | } finally { |
| 1187 | if (timeoutTask != null) { |
| 1188 | timeoutTask.cancel(); |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | this.lastInsertId = this.results.getUpdateID(); |
| 1193 | |
| 1194 | /* |
| 1195 | * if (!this.results.reallyResult()) { if |
| 1196 | * (!this.connection.getAutoCommit()) { this.connection.rollback(); } |
| 1197 | * |
| 1198 | * throw |
| 1199 | * SQLError.createSQLException(Messages.getString("Statement.40"), |
| 1200 | * //$NON-NLS-1$ SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ } |
| 1201 | */ |
| 1202 | if (cachedMetaData != null) { |
| 1203 | initializeResultsMetadataFromCache(sql, cachedMetaData, |
| 1204 | this.results); |
| 1205 | } else { |
| 1206 | if (this.connection.getCacheResultSetMetadata()) { |
| 1207 | initializeResultsMetadataFromCache(sql, |
| 1208 | null /* will be created */, this.results); |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | return this.results; |
| 1213 | } |
| 1214 | } |
| 1215 | |
| 1216 | /** |
| 1217 | * Execute a SQL INSERT, UPDATE or DELETE statement. In addition SQL |
| 1218 | * statements that return nothing such as SQL DDL statements can be executed |
| 1219 | * Any IDs generated for AUTO_INCREMENT fields can be retrieved by casting |
| 1220 | * this Statement to org.gjt.mm.mysql.Statement and calling the |
| 1221 | * getLastInsertID() method. |
| 1222 | * |
| 1223 | * @param sql |
| 1224 | * a SQL statement |
| 1225 | * |
| 1226 | * @return either a row count, or 0 for SQL commands |
| 1227 | * |
| 1228 | * @exception SQLException |
| 1229 | * if a database access error occurs |
| 1230 | */ |
| 1231 | public int executeUpdate(String sql) throws SQLException { |
| 1232 | return executeUpdate(sql, false); |
| 1233 | } |
| 1234 | |
| 1235 | protected int executeUpdate(String sql, boolean isBatch) |
| 1236 | throws SQLException { |
| 1237 | checkClosed(); |
| 1238 | |
| 1239 | Connection locallyScopedConn = this.connection; |
| 1240 | |
| 1241 | char firstStatementChar = StringUtils.firstNonWsCharUc(sql); |
| 1242 | |
| 1243 | ResultSet rs = null; |
| 1244 | |
| 1245 | synchronized (locallyScopedConn.getMutex()) { |
| 1246 | this.wasCancelled = false; |
| 1247 | |
| 1248 | checkNullOrEmptyQuery(sql); |
| 1249 | |
| 1250 | if (this.doEscapeProcessing) { |
| 1251 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 1252 | this.connection.serverSupportsConvertFn(), this.connection); |
| 1253 | |
| 1254 | if (escapedSqlResult instanceof String) { |
| 1255 | sql = (String) escapedSqlResult; |
| 1256 | } else { |
| 1257 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 1258 | } |
| 1259 | } |
| 1260 | |
| 1261 | if (locallyScopedConn.isReadOnly()) { |
| 1262 | throw SQLError.createSQLException(Messages |
| 1263 | .getString("Statement.42") //$NON-NLS-1$ |
| 1264 | + Messages.getString("Statement.43"), //$NON-NLS-1$ |
| 1265 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1266 | } |
| 1267 | |
| 1268 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "select")) { //$NON-NLS-1$ |
| 1269 | throw SQLError.createSQLException(Messages |
| 1270 | .getString("Statement.46"), //$NON-NLS-1$ |
| 1271 | "01S03"); //$NON-NLS-1$ |
| 1272 | } |
| 1273 | |
| 1274 | if (this.results != null) { |
| 1275 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
| 1276 | this.results.realClose(false); |
| 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | // The checking and changing of catalogs |
| 1281 | // must happen in sequence, so synchronize |
| 1282 | // on the same mutex that _conn is using |
| 1283 | |
| 1284 | CancelTask timeoutTask = null; |
| 1285 | |
| 1286 | try { |
| 1287 | if (this.timeout != 0 |
| 1288 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
| 1289 | timeoutTask = new CancelTask(); |
| 1290 | Connection.getCancelTimer().schedule(timeoutTask, |
| 1291 | this.timeout); |
| 1292 | } |
| 1293 | |
| 1294 | String oldCatalog = null; |
| 1295 | |
| 1296 | if (!locallyScopedConn.getCatalog().equals(this.currentCatalog)) { |
| 1297 | oldCatalog = locallyScopedConn.getCatalog(); |
| 1298 | locallyScopedConn.setCatalog(this.currentCatalog); |
| 1299 | } |
| 1300 | |
| 1301 | // |
| 1302 | // Only apply max_rows to selects |
| 1303 | // |
| 1304 | if (locallyScopedConn.useMaxRows()) { |
| 1305 | locallyScopedConn.execSQL( |
| 1306 | this, |
| 1307 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", //$NON-NLS-1$ |
| 1308 | -1, null, java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1309 | java.sql.ResultSet.CONCUR_READ_ONLY, false, |
| 1310 | this.currentCatalog, true); |
| 1311 | } |
| 1312 | |
| 1313 | rs = locallyScopedConn.execSQL(this, sql, -1, null, |
| 1314 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1315 | java.sql.ResultSet.CONCUR_READ_ONLY, false, |
| 1316 | this.currentCatalog, |
| 1317 | true /* force read of field info on DML */, |
| 1318 | isBatch); |
| 1319 | |
| 1320 | if (timeoutTask != null) { |
| 1321 | timeoutTask.cancel(); |
| 1322 | timeoutTask = null; |
| 1323 | } |
| 1324 | |
| 1325 | if (oldCatalog != null) { |
| 1326 | locallyScopedConn.setCatalog(oldCatalog); |
| 1327 | } |
| 1328 | |
| 1329 | if (this.wasCancelled) { |
| 1330 | this.wasCancelled = false; |
| 1331 | throw new MySQLTimeoutException(); |
| 1332 | } |
| 1333 | } finally { |
| 1334 | if (timeoutTask != null) { |
| 1335 | timeoutTask.cancel(); |
| 1336 | } |
| 1337 | } |
| 1338 | } |
| 1339 | |
| 1340 | this.results = rs; |
| 1341 | |
| 1342 | rs.setFirstCharOfQuery(firstStatementChar); |
| 1343 | |
| 1344 | this.updateCount = rs.getUpdateCount(); |
| 1345 | |
| 1346 | int truncatedUpdateCount = 0; |
| 1347 | |
| 1348 | if (this.updateCount > Integer.MAX_VALUE) { |
| 1349 | truncatedUpdateCount = Integer.MAX_VALUE; |
| 1350 | } else { |
| 1351 | truncatedUpdateCount = (int) this.updateCount; |
| 1352 | } |
| 1353 | |
| 1354 | this.lastInsertId = rs.getUpdateID(); |
| 1355 | |
| 1356 | return truncatedUpdateCount; |
| 1357 | } |
| 1358 | |
| 1359 | /** |
| 1360 | * @see Statement#executeUpdate(String, int) |
| 1361 | */ |
| 1362 | public int executeUpdate(String sql, int returnGeneratedKeys) |
| 1363 | throws SQLException { |
| 1364 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
| 1365 | checkClosed(); |
| 1366 | |
| 1367 | Connection locallyScopedConn = this.connection; |
| 1368 | |
| 1369 | synchronized (locallyScopedConn.getMutex()) { |
| 1370 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1371 | // the 'info' message returned from the server to determine |
| 1372 | // the actual number of keys generated. |
| 1373 | boolean readInfoMsgState = locallyScopedConn |
| 1374 | .isReadInfoMsgEnabled(); |
| 1375 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 1376 | |
| 1377 | try { |
| 1378 | return executeUpdate(sql); |
| 1379 | } finally { |
| 1380 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 1381 | } |
| 1382 | } |
| 1383 | } |
| 1384 | |
| 1385 | return executeUpdate(sql); |
| 1386 | } |
| 1387 | |
| 1388 | /** |
| 1389 | * @see Statement#executeUpdate(String, int[]) |
| 1390 | */ |
| 1391 | public int executeUpdate(String sql, int[] generatedKeyIndices) |
| 1392 | throws SQLException { |
| 1393 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
| 1394 | checkClosed(); |
| 1395 | |
| 1396 | Connection locallyScopedConn = this.connection; |
| 1397 | |
| 1398 | synchronized (locallyScopedConn.getMutex()) { |
| 1399 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1400 | // the 'info' message returned from the server to determine |
| 1401 | // the actual number of keys generated. |
| 1402 | boolean readInfoMsgState = locallyScopedConn |
| 1403 | .isReadInfoMsgEnabled(); |
| 1404 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 1405 | |
| 1406 | try { |
| 1407 | return executeUpdate(sql); |
| 1408 | } finally { |
| 1409 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 1410 | } |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | return executeUpdate(sql); |
| 1415 | } |
| 1416 | |
| 1417 | /** |
| 1418 | * @see Statement#executeUpdate(String, String[]) |
| 1419 | */ |
| 1420 | public int executeUpdate(String sql, String[] generatedKeyNames) |
| 1421 | throws SQLException { |
| 1422 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
| 1423 | checkClosed(); |
| 1424 | |
| 1425 | Connection locallyScopedConn = this.connection; |
| 1426 | |
| 1427 | synchronized (locallyScopedConn.getMutex()) { |
| 1428 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1429 | // the 'info' message returned from the server to determine |
| 1430 | // the actual number of keys generated. |
| 1431 | boolean readInfoMsgState = this.connection |
| 1432 | .isReadInfoMsgEnabled(); |
| 1433 | locallyScopedConn.setReadInfoMsgEnabled(true); |
| 1434 | |
| 1435 | try { |
| 1436 | return executeUpdate(sql); |
| 1437 | } finally { |
| 1438 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
| 1439 | } |
| 1440 | } |
| 1441 | } |
| 1442 | |
| 1443 | return executeUpdate(sql); |
| 1444 | } |
| 1445 | |
| 1446 | /** |
| 1447 | * Returns cached metadata (or null if not cached) for the given query, |
| 1448 | * which must match _exactly_. Note this method is guarded against |
| 1449 | * concurrent access via the synchronized{} block in execute() and |
| 1450 | * executeQuery(). |
| 1451 | * |
| 1452 | * @param sql |
| 1453 | * the query that is the key to the cache |
| 1454 | * |
| 1455 | * @return DOCUMENT ME! |
| 1456 | */ |
| 1457 | protected CachedResultSetMetaData getCachedMetaData(String sql) { |
| 1458 | if (this.resultSetMetadataCache != null) { |
| 1459 | return (CachedResultSetMetaData) this.resultSetMetadataCache |
| 1460 | .get(sql); |
| 1461 | } |
| 1462 | |
| 1463 | return null; // no cache exists (yet) |
| 1464 | } |
| 1465 | |
| 1466 | /** |
| 1467 | * Optimization to only use one calendar per-session, or calculate it for |
| 1468 | * each call, depending on user configuration |
| 1469 | */ |
| 1470 | protected Calendar getCalendarInstanceForSessionOrNew() { |
| 1471 | if (this.connection != null) { |
| 1472 | return this.connection.getCalendarInstanceForSessionOrNew(); |
| 1473 | } else { |
| 1474 | // punt, no connection around |
| 1475 | return new GregorianCalendar(); |
| 1476 | } |
| 1477 | } |
| 1478 | |
| 1479 | /** |
| 1480 | * JDBC 2.0 Return the Connection that produced the Statement. |
| 1481 | * |
| 1482 | * @return the Connection that produced the Statement |
| 1483 | * |
| 1484 | * @throws SQLException |
| 1485 | * if an error occurs |
| 1486 | */ |
| 1487 | public java.sql.Connection getConnection() throws SQLException { |
| 1488 | return this.connection; |
| 1489 | } |
| 1490 | |
| 1491 | /** |
| 1492 | * JDBC 2.0 Determine the fetch direction. |
| 1493 | * |
| 1494 | * @return the default fetch direction |
| 1495 | * |
| 1496 | * @exception SQLException |
| 1497 | * if a database-access error occurs |
| 1498 | */ |
| 1499 | public int getFetchDirection() throws SQLException { |
| 1500 | return java.sql.ResultSet.FETCH_FORWARD; |
| 1501 | } |
| 1502 | |
| 1503 | /** |
| 1504 | * JDBC 2.0 Determine the default fetch size. |
| 1505 | * |
| 1506 | * @return the number of rows to fetch at a time |
| 1507 | * |
| 1508 | * @throws SQLException |
| 1509 | * if an error occurs |
| 1510 | */ |
| 1511 | public int getFetchSize() throws SQLException { |
| 1512 | return this.fetchSize; |
| 1513 | } |
| 1514 | |
| 1515 | /** |
| 1516 | * DOCUMENT ME! |
| 1517 | * |
| 1518 | * @return DOCUMENT ME! |
| 1519 | * |
| 1520 | * @throws SQLException |
| 1521 | * DOCUMENT ME! |
| 1522 | */ |
| 1523 | public java.sql.ResultSet getGeneratedKeys() |
| 1524 | throws SQLException { |
| 1525 | if (this.batchedGeneratedKeys == null) { |
| 1526 | return getGeneratedKeysInternal(); |
| 1527 | } |
| 1528 | |
| 1529 | Field[] fields = new Field[1]; |
| 1530 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1531 | fields[0].setConnection(this.connection); |
| 1532 | |
| 1533 | return new com.mysql.jdbc.ResultSet(this.currentCatalog, fields, |
| 1534 | new RowDataStatic(this.batchedGeneratedKeys), this.connection, |
| 1535 | this); |
| 1536 | } |
| 1537 | |
| 1538 | /* |
| 1539 | * Needed because there's no concept of super.super to get to this |
| 1540 | * implementation from ServerPreparedStatement when dealing with batched |
| 1541 | * updates. |
| 1542 | */ |
| 1543 | protected java.sql.ResultSet getGeneratedKeysInternal() |
| 1544 | throws SQLException { |
| 1545 | Field[] fields = new Field[1]; |
| 1546 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1547 | fields[0].setConnection(this.connection); |
| 1548 | |
| 1549 | ArrayList rowSet = new ArrayList(); |
| 1550 | |
| 1551 | long beginAt = getLastInsertID(); |
| 1552 | int numKeys = getUpdateCount(); |
| 1553 | |
| 1554 | if (this.results != null) { |
| 1555 | String serverInfo = this.results.getServerInfo(); |
| 1556 | |
| 1557 | // |
| 1558 | // Only parse server info messages for 'REPLACE' |
| 1559 | // queries |
| 1560 | // |
| 1561 | if ((numKeys > 0) && (this.results.getFirstCharOfQuery() == 'R') |
| 1562 | && (serverInfo != null) && (serverInfo.length() > 0)) { |
| 1563 | numKeys = getRecordCountFromInfo(serverInfo); |
| 1564 | } |
| 1565 | |
| 1566 | if ((beginAt > 0) && (numKeys > 0)) { |
| 1567 | for (int i = 0; i < numKeys; i++) { |
| 1568 | byte[][] row = new byte[1][]; |
| 1569 | row[0] = Long.toString(beginAt++).getBytes(); |
| 1570 | rowSet.add(row); |
| 1571 | } |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | return new com.mysql.jdbc.ResultSet(this.currentCatalog, fields, |
| 1576 | new RowDataStatic(rowSet), this.connection, this); |
| 1577 | } |
| 1578 | |
| 1579 | /** |
| 1580 | * Returns the id used when profiling |
| 1581 | * |
| 1582 | * @return the id used when profiling. |
| 1583 | */ |
| 1584 | protected int getId() { |
| 1585 | return this.statementId; |
| 1586 | } |
| 1587 | |
| 1588 | /** |
| 1589 | * getLastInsertID returns the value of the auto_incremented key after an |
| 1590 | * executeQuery() or excute() call. |
| 1591 | * |
| 1592 | * <p> |
| 1593 | * This gets around the un-threadsafe behavior of "select LAST_INSERT_ID()" |
| 1594 | * which is tied to the Connection that created this Statement, and |
| 1595 | * therefore could have had many INSERTS performed before one gets a chance |
| 1596 | * to call "select LAST_INSERT_ID()". |
| 1597 | * </p> |
| 1598 | * |
| 1599 | * @return the last update ID. |
| 1600 | */ |
| 1601 | public long getLastInsertID() { |
| 1602 | return this.lastInsertId; |
| 1603 | } |
| 1604 | |
| 1605 | /** |
| 1606 | * getLongUpdateCount returns the current result as an update count, if the |
| 1607 | * result is a ResultSet or there are no more results, -1 is returned. It |
| 1608 | * should only be called once per result. |
| 1609 | * |
| 1610 | * <p> |
| 1611 | * This method returns longs as MySQL server versions newer than 3.22.4 |
| 1612 | * return 64-bit values for update counts |
| 1613 | * </p> |
| 1614 | * |
| 1615 | * @return the current update count. |
| 1616 | */ |
| 1617 | public long getLongUpdateCount() { |
| 1618 | if (this.results == null) { |
| 1619 | return -1; |
| 1620 | } |
| 1621 | |
| 1622 | if (this.results.reallyResult()) { |
| 1623 | return -1; |
| 1624 | } |
| 1625 | |
| 1626 | return this.updateCount; |
| 1627 | } |
| 1628 | |
| 1629 | /** |
| 1630 | * The maxFieldSize limit (in bytes) is the maximum amount of data returned |
| 1631 | * for any column value; it only applies to BINARY, VARBINARY, |
| 1632 | * LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR columns. If the limit is |
| 1633 | * exceeded, the excess data is silently discarded. |
| 1634 | * |
| 1635 | * @return the current max column size limit; zero means unlimited |
| 1636 | * |
| 1637 | * @exception SQLException |
| 1638 | * if a database access error occurs |
| 1639 | */ |
| 1640 | public int getMaxFieldSize() throws SQLException { |
| 1641 | return this.maxFieldSize; |
| 1642 | } |
| 1643 | |
| 1644 | /** |
| 1645 | * The maxRows limit is set to limit the number of rows that any ResultSet |
| 1646 | * can contain. If the limit is exceeded, the excess rows are silently |
| 1647 | * dropped. |
| 1648 | * |
| 1649 | * @return the current maximum row limit; zero means unlimited |
| 1650 | * |
| 1651 | * @exception SQLException |
| 1652 | * if a database access error occurs |
| 1653 | */ |
| 1654 | public int getMaxRows() throws SQLException { |
| 1655 | if (this.maxRows <= 0) { |
| 1656 | return 0; |
| 1657 | } |
| 1658 | |
| 1659 | return this.maxRows; |
| 1660 | } |
| 1661 | |
| 1662 | /** |
| 1663 | * getMoreResults moves to a Statement's next result. If it returns true, |
| 1664 | * this result is a ResulSet. |
| 1665 | * |
| 1666 | * @return true if the next ResultSet is valid |
| 1667 | * |
| 1668 | * @exception SQLException |
| 1669 | * if a database access error occurs |
| 1670 | */ |
| 1671 | public boolean getMoreResults() throws SQLException { |
| 1672 | return getMoreResults(CLOSE_CURRENT_RESULT); |
| 1673 | } |
| 1674 | |
| 1675 | /** |
| 1676 | * @see Statement#getMoreResults(int) |
| 1677 | */ |
| 1678 | public boolean getMoreResults(int current) throws SQLException { |
| 1679 | |
| 1680 | if (this.results == null) { |
| 1681 | return false; |
| 1682 | } |
| 1683 | |
| 1684 | ResultSet nextResultSet = this.results.getNextResultSet(); |
| 1685 | |
| 1686 | switch (current) { |
| 1687 | case java.sql.Statement.CLOSE_CURRENT_RESULT: |
| 1688 | |
| 1689 | if (this.results != null) { |
| 1690 | this.results.close(); |
| 1691 | this.results.clearNextResult(); |
| 1692 | } |
| 1693 | |
| 1694 | break; |
| 1695 | |
| 1696 | case java.sql.Statement.CLOSE_ALL_RESULTS: |
| 1697 | |
| 1698 | if (this.results != null) { |
| 1699 | this.results.close(); |
| 1700 | this.results.clearNextResult(); |
| 1701 | } |
| 1702 | |
| 1703 | closeAllOpenResults(); |
| 1704 | |
| 1705 | break; |
| 1706 | |
| 1707 | case java.sql.Statement.KEEP_CURRENT_RESULT: |
| 1708 | if (!this.connection.getDontTrackOpenResources()) { |
| 1709 | this.openResults.add(this.results); |
| 1710 | } |
| 1711 | |
| 1712 | this.results.clearNextResult(); // nobody besides us should |
| 1713 | // ever need this value... |
| 1714 | break; |
| 1715 | |
| 1716 | default: |
| 1717 | throw SQLError.createSQLException(Messages |
| 1718 | .getString("Statement.19"), //$NON-NLS-1$ |
| 1719 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1720 | } |
| 1721 | |
| 1722 | this.results = nextResultSet; |
| 1723 | |
| 1724 | if (this.results == null) { |
| 1725 | this.updateCount = -1; |
| 1726 | this.lastInsertId = -1; |
| 1727 | } else if (this.results.reallyResult()) { |
| 1728 | this.updateCount = -1; |
| 1729 | this.lastInsertId = -1; |
| 1730 | } else { |
| 1731 | this.updateCount = this.results.getUpdateCount(); |
| 1732 | this.lastInsertId = this.results.getUpdateID(); |
| 1733 | } |
| 1734 | |
| 1735 | return ((this.results != null) && this.results.reallyResult()) ? true |
| 1736 | : false; |
| 1737 | } |
| 1738 | |
| 1739 | /** |
| 1740 | * The queryTimeout limit is the number of seconds the driver will wait for |
| 1741 | * a Statement to execute. If the limit is exceeded, a SQLException is |
| 1742 | * thrown. |
| 1743 | * |
| 1744 | * @return the current query timeout limit in seconds; 0 = unlimited |
| 1745 | * |
| 1746 | * @exception SQLException |
| 1747 | * if a database access error occurs |
| 1748 | */ |
| 1749 | public int getQueryTimeout() throws SQLException { |
| 1750 | return this.timeout; |
| 1751 | } |
| 1752 | |
| 1753 | /** |
| 1754 | * Parses actual record count from 'info' message |
| 1755 | * |
| 1756 | * @param serverInfo |
| 1757 | * DOCUMENT ME! |
| 1758 | * |
| 1759 | * @return DOCUMENT ME! |
| 1760 | */ |
| 1761 | private int getRecordCountFromInfo(String serverInfo) { |
| 1762 | StringBuffer recordsBuf = new StringBuffer(); |
| 1763 | int recordsCount = 0; |
| 1764 | int duplicatesCount = 0; |
| 1765 | |
| 1766 | char c = (char) 0; |
| 1767 | |
| 1768 | int length = serverInfo.length(); |
| 1769 | int i = 0; |
| 1770 | |
| 1771 | for (; i < length; i++) { |
| 1772 | c = serverInfo.charAt(i); |
| 1773 | |
| 1774 | if (Character.isDigit(c)) { |
| 1775 | break; |
| 1776 | } |
| 1777 | } |
| 1778 | |
| 1779 | recordsBuf.append(c); |
| 1780 | i++; |
| 1781 | |
| 1782 | for (; i < length; i++) { |
| 1783 | c = serverInfo.charAt(i); |
| 1784 | |
| 1785 | if (!Character.isDigit(c)) { |
| 1786 | break; |
| 1787 | } |
| 1788 | |
| 1789 | recordsBuf.append(c); |
| 1790 | } |
| 1791 | |
| 1792 | recordsCount = Integer.parseInt(recordsBuf.toString()); |
| 1793 | |
| 1794 | StringBuffer duplicatesBuf = new StringBuffer(); |
| 1795 | |
| 1796 | for (; i < length; i++) { |
| 1797 | c = serverInfo.charAt(i); |
| 1798 | |
| 1799 | if (Character.isDigit(c)) { |
| 1800 | break; |
| 1801 | } |
| 1802 | } |
| 1803 | |
| 1804 | duplicatesBuf.append(c); |
| 1805 | i++; |
| 1806 | |
| 1807 | for (; i < length; i++) { |
| 1808 | c = serverInfo.charAt(i); |
| 1809 | |
| 1810 | if (!Character.isDigit(c)) { |
| 1811 | break; |
| 1812 | } |
| 1813 | |
| 1814 | duplicatesBuf.append(c); |
| 1815 | } |
| 1816 | |
| 1817 | duplicatesCount = Integer.parseInt(duplicatesBuf.toString()); |
| 1818 | |
| 1819 | return recordsCount - duplicatesCount; |
| 1820 | } |
| 1821 | |
| 1822 | /** |
| 1823 | * getResultSet returns the current result as a ResultSet. It should only be |
| 1824 | * called once per result. |
| 1825 | * |
| 1826 | * @return the current result set; null if there are no more |
| 1827 | * |
| 1828 | * @exception SQLException |
| 1829 | * if a database access error occurs (why?) |
| 1830 | */ |
| 1831 | public java.sql.ResultSet getResultSet() throws SQLException { |
| 1832 | return ((this.results != null) && this.results.reallyResult()) ? (java.sql.ResultSet) this.results |
| 1833 | : null; |
| 1834 | } |
| 1835 | |
| 1836 | /** |
| 1837 | * JDBC 2.0 Determine the result set concurrency. |
| 1838 | * |
| 1839 | * @return CONCUR_UPDATABLE or CONCUR_READONLY |
| 1840 | * |
| 1841 | * @throws SQLException |
| 1842 | * if an error occurs |
| 1843 | */ |
| 1844 | public int getResultSetConcurrency() throws SQLException { |
| 1845 | return this.resultSetConcurrency; |
| 1846 | } |
| 1847 | |
| 1848 | /** |
| 1849 | * @see Statement#getResultSetHoldability() |
| 1850 | */ |
| 1851 | public int getResultSetHoldability() throws SQLException { |
| 1852 | return java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT; |
| 1853 | } |
| 1854 | |
| 1855 | protected ResultSet getResultSetInternal() { |
| 1856 | return this.results; |
| 1857 | } |
| 1858 | |
| 1859 | /** |
| 1860 | * JDBC 2.0 Determine the result set type. |
| 1861 | * |
| 1862 | * @return the ResultSet type (SCROLL_SENSITIVE or SCROLL_INSENSITIVE) |
| 1863 | * |
| 1864 | * @throws SQLException |
| 1865 | * if an error occurs. |
| 1866 | */ |
| 1867 | public int getResultSetType() throws SQLException { |
| 1868 | return this.resultSetType; |
| 1869 | } |
| 1870 | |
| 1871 | /** |
| 1872 | * getUpdateCount returns the current result as an update count, if the |
| 1873 | * result is a ResultSet or there are no more results, -1 is returned. It |
| 1874 | * should only be called once per result. |
| 1875 | * |
| 1876 | * @return the current result as an update count. |
| 1877 | * |
| 1878 | * @exception SQLException |
| 1879 | * if a database access error occurs |
| 1880 | */ |
| 1881 | public int getUpdateCount() throws SQLException { |
| 1882 | if (this.results == null) { |
| 1883 | return -1; |
| 1884 | } |
| 1885 | |
| 1886 | if (this.results.reallyResult()) { |
| 1887 | return -1; |
| 1888 | } |
| 1889 | |
| 1890 | int truncatedUpdateCount = 0; |
| 1891 | |
| 1892 | if (this.results.getUpdateCount() > Integer.MAX_VALUE) { |
| 1893 | truncatedUpdateCount = Integer.MAX_VALUE; |
| 1894 | } else { |
| 1895 | truncatedUpdateCount = (int) this.results.getUpdateCount(); |
| 1896 | } |
| 1897 | |
| 1898 | return truncatedUpdateCount; |
| 1899 | } |
| 1900 | |
| 1901 | /** |
| 1902 | * The first warning reported by calls on this Statement is returned. A |
| 1903 | * Statement's execute methods clear its java.sql.SQLWarning chain. |
| 1904 | * Subsequent Statement warnings will be chained to this |
| 1905 | * java.sql.SQLWarning. |
| 1906 | * |
| 1907 | * <p> |
| 1908 | * The Warning chain is automatically cleared each time a statement is |
| 1909 | * (re)executed. |
| 1910 | * </p> |
| 1911 | * |
| 1912 | * <p> |
| 1913 | * <B>Note:</B> If you are processing a ResultSet then any warnings |
| 1914 | * associated with ResultSet reads will be chained on the ResultSet object. |
| 1915 | * </p> |
| 1916 | * |
| 1917 | * @return the first java.sql.SQLWarning or null |
| 1918 | * |
| 1919 | * @exception SQLException |
| 1920 | * if a database access error occurs |
| 1921 | */ |
| 1922 | public java.sql.SQLWarning getWarnings() throws SQLException { |
| 1923 | checkClosed(); |
| 1924 | |
| 1925 | if (this.connection != null && !this.connection.isClosed() |
| 1926 | && this.connection.versionMeetsMinimum(4, 1, 0)) { |
| 1927 | SQLWarning pendingWarningsFromServer = SQLError |
| 1928 | .convertShowWarningsToSQLWarnings(this.connection); |
| 1929 | |
| 1930 | if (this.warningChain != null) { |
| 1931 | this.warningChain.setNextWarning(pendingWarningsFromServer); |
| 1932 | } else { |
| 1933 | this.warningChain = pendingWarningsFromServer; |
| 1934 | } |
| 1935 | |
| 1936 | return this.warningChain; |
| 1937 | } |
| 1938 | |
| 1939 | return this.warningChain; |
| 1940 | } |
| 1941 | |
| 1942 | /** |
| 1943 | * Caches CachedResultSetMetaData that has been placed in the cache using |
| 1944 | * the given SQL as a key. |
| 1945 | * |
| 1946 | * @param sql |
| 1947 | * DOCUMENT ME! |
| 1948 | * @param cachedMetaData |
| 1949 | * DOCUMENT ME! |
| 1950 | * @param resultSet |
| 1951 | * DOCUMENT ME! |
| 1952 | * |
| 1953 | * @throws SQLException |
| 1954 | * DOCUMENT ME! |
| 1955 | */ |
| 1956 | protected void initializeResultsMetadataFromCache(String sql, |
| 1957 | CachedResultSetMetaData cachedMetaData, ResultSet resultSet) |
| 1958 | throws SQLException { |
| 1959 | synchronized (resultSet) { |
| 1960 | if (cachedMetaData == null) { |
| 1961 | // read from results |
| 1962 | cachedMetaData = new CachedResultSetMetaData(); |
| 1963 | cachedMetaData.fields = this.results.fields; |
| 1964 | |
| 1965 | // assume that users will use named-based |
| 1966 | // lookups |
| 1967 | resultSet.buildIndexMapping(); |
| 1968 | |
| 1969 | cachedMetaData.columnNameToIndex = resultSet.columnNameToIndex; |
| 1970 | cachedMetaData.fullColumnNameToIndex = resultSet.fullColumnNameToIndex; |
| 1971 | |
| 1972 | cachedMetaData.metadata = resultSet.getMetaData(); |
| 1973 | |
| 1974 | if (this.resultSetMetadataCache == null) { |
| 1975 | this.resultSetMetadataCache = new LRUCache(this.connection |
| 1976 | .getMetadataCacheSize()); |
| 1977 | } |
| 1978 | |
| 1979 | this.resultSetMetadataCache.put(sql, cachedMetaData); |
| 1980 | } else { |
| 1981 | // initialize results from cached data |
| 1982 | resultSet.fields = cachedMetaData.fields; |
| 1983 | resultSet.columnNameToIndex = cachedMetaData.columnNameToIndex; |
| 1984 | resultSet.fullColumnNameToIndex = cachedMetaData.fullColumnNameToIndex; |
| 1985 | resultSet.hasBuiltIndexMapping = true; |
| 1986 | |
| 1987 | // results.resultSetMetaData = cachedMetaData.metadata; |
| 1988 | } |
| 1989 | } |
| 1990 | } |
| 1991 | |
| 1992 | /** |
| 1993 | * Closes this statement, and frees resources. |
| 1994 | * |
| 1995 | * @param calledExplicitly |
| 1996 | * was this called from close()? |
| 1997 | * |
| 1998 | * @throws SQLException |
| 1999 | * if an error occurs |
| 2000 | */ |
| 2001 | protected void realClose(boolean calledExplicitly, boolean closeOpenResults) |
| 2002 | throws SQLException { |
| 2003 | if (this.isClosed) { |
| 2004 | return; |
| 2005 | } |
| 2006 | |
| 2007 | if (this.useUsageAdvisor) { |
| 2008 | if (!calledExplicitly) { |
| 2009 | String message = Messages.getString("Statement.63") //$NON-NLS-1$ |
| 2010 | + Messages.getString("Statement.64"); //$NON-NLS-1$ |
| 2011 | |
| 2012 | this.eventSink.consumeEvent(new ProfilerEvent( |
| 2013 | ProfilerEvent.TYPE_WARN, |
| 2014 | "", //$NON-NLS-1$ |
| 2015 | this.currentCatalog, this.connectionId, this |
| 2016 | .getId(), -1, System.currentTimeMillis(), 0, |
| 2017 | null, this.pointOfOrigin, message)); |
| 2018 | } |
| 2019 | } |
| 2020 | |
| 2021 | if (this.results != null) { |
| 2022 | if (closeOpenResults) { |
| 2023 | closeOpenResults = !this.holdResultsOpenOverClose; |
| 2024 | } |
| 2025 | |
| 2026 | if (closeOpenResults && this.connection != null |
| 2027 | && !this.connection.getHoldResultsOpenOverStatementClose()) { |
| 2028 | try { |
| 2029 | this.results.close(); |
| 2030 | } catch (Exception ex) { |
| 2031 | ; |
| 2032 | } |
| 2033 | |
| 2034 | this.closeAllOpenResults(); |
| 2035 | } |
| 2036 | } |
| 2037 | |
| 2038 | if (this.connection != null) { |
| 2039 | if (this.maxRowsChanged) { |
| 2040 | this.connection.unsetMaxRows(this); |
| 2041 | } |
| 2042 | |
| 2043 | if (!this.connection.getDontTrackOpenResources()) { |
| 2044 | this.connection.unregisterStatement(this); |
| 2045 | } |
| 2046 | } |
| 2047 | |
| 2048 | this.results = null; |
| 2049 | this.connection = null; |
| 2050 | this.warningChain = null; |
| 2051 | this.openResults = null; |
| 2052 | this.batchedGeneratedKeys = null; |
| 2053 | this.isClosed = true; |
| 2054 | } |
| 2055 | |
| 2056 | /** |
| 2057 | * setCursorName defines the SQL cursor name that will be used by subsequent |
| 2058 | * execute methods. This name can then be used in SQL positioned |
| 2059 | * update/delete statements to identify the current row in the ResultSet |
| 2060 | * generated by this statement. If a database doesn't support positioned |
| 2061 | * update/delete, this method is a no-op. |
| 2062 | * |
| 2063 | * <p> |
| 2064 | * <b>Note:</b> This MySQL driver does not support cursors. |
| 2065 | * </p> |
| 2066 | * |
| 2067 | * @param name |
| 2068 | * the new cursor name |
| 2069 | * |
| 2070 | * @exception SQLException |
| 2071 | * if a database access error occurs |
| 2072 | */ |
| 2073 | public void setCursorName(String name) throws SQLException { |
| 2074 | // No-op |
| 2075 | } |
| 2076 | |
| 2077 | /** |
| 2078 | * If escape scanning is on (the default), the driver will do escape |
| 2079 | * substitution before sending the SQL to the database. |
| 2080 | * |
| 2081 | * @param enable |
| 2082 | * true to enable; false to disable |
| 2083 | * |
| 2084 | * @exception SQLException |
| 2085 | * if a database access error occurs |
| 2086 | */ |
| 2087 | public void setEscapeProcessing(boolean enable) |
| 2088 | throws SQLException { |
| 2089 | this.doEscapeProcessing = enable; |
| 2090 | } |
| 2091 | |
| 2092 | /** |
| 2093 | * JDBC 2.0 Give a hint as to the direction in which the rows in a result |
| 2094 | * set will be processed. The hint applies only to result sets created using |
| 2095 | * this Statement object. The default value is ResultSet.FETCH_FORWARD. |
| 2096 | * |
| 2097 | * @param direction |
| 2098 | * the initial direction for processing rows |
| 2099 | * |
| 2100 | * @exception SQLException |
| 2101 | * if a database-access error occurs or direction is not one |
| 2102 | * of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or |
| 2103 | * ResultSet.FETCH_UNKNOWN |
| 2104 | */ |
| 2105 | public void setFetchDirection(int direction) throws SQLException { |
| 2106 | switch (direction) { |
| 2107 | case java.sql.ResultSet.FETCH_FORWARD: |
| 2108 | case java.sql.ResultSet.FETCH_REVERSE: |
| 2109 | case java.sql.ResultSet.FETCH_UNKNOWN: |
| 2110 | break; |
| 2111 | |
| 2112 | default: |
| 2113 | throw SQLError.createSQLException( |
| 2114 | Messages.getString("Statement.5"), //$NON-NLS-1$ |
| 2115 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 2116 | } |
| 2117 | } |
| 2118 | |
| 2119 | /** |
| 2120 | * JDBC 2.0 Give the JDBC driver a hint as to the number of rows that should |
| 2121 | * be fetched from the database when more rows are needed. The number of |
| 2122 | * rows specified only affects result sets created using this statement. If |
| 2123 | * the value specified is zero, then the hint is ignored. The default value |
| 2124 | * is zero. |
| 2125 | * |
| 2126 | * @param rows |
| 2127 | * the number of rows to fetch |
| 2128 | * |
| 2129 | * @exception SQLException |
| 2130 | * if a database-access error occurs, or the condition 0 |
| 2131 | * <= rows <= this.getMaxRows() is not satisfied. |
| 2132 | */ |
| 2133 | public void setFetchSize(int rows) throws SQLException { |
| 2134 | if (((rows < 0) && (rows != Integer.MIN_VALUE)) |
| 2135 | || ((this.maxRows != 0) && (this.maxRows != -1) && (rows > this |
| 2136 | .getMaxRows()))) { |
| 2137 | throw SQLError.createSQLException( |
| 2138 | Messages.getString("Statement.7"), //$NON-NLS-1$ |
| 2139 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 2140 | } |
| 2141 | |
| 2142 | this.fetchSize = rows; |
| 2143 | } |
| 2144 | |
| 2145 | protected void setHoldResultsOpenOverClose(boolean holdResultsOpenOverClose) { |
| 2146 | this.holdResultsOpenOverClose = holdResultsOpenOverClose; |
| 2147 | } |
| 2148 | |
| 2149 | /** |
| 2150 | * Sets the maxFieldSize |
| 2151 | * |
| 2152 | * @param max |
| 2153 | * the new max column size limit; zero means unlimited |
| 2154 | * |
| 2155 | * @exception SQLException |
| 2156 | * if size exceeds buffer size |
| 2157 | */ |
| 2158 | public void setMaxFieldSize(int max) throws SQLException { |
| 2159 | if (max < 0) { |
| 2160 | throw SQLError.createSQLException(Messages |
| 2161 | .getString("Statement.11"), //$NON-NLS-1$ |
| 2162 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 2163 | } |
| 2164 | |
| 2165 | int maxBuf = (this.connection != null) ? this.connection |
| 2166 | .getMaxAllowedPacket() : MysqlIO.getMaxBuf(); |
| 2167 | |
| 2168 | if (max > maxBuf) { |
| 2169 | throw SQLError.createSQLException(Messages.getString( |
| 2170 | "Statement.13", //$NON-NLS-1$ |
| 2171 | new Object[] { new Long(maxBuf) }), //$NON-NLS-1$ |
| 2172 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 2173 | } |
| 2174 | |
| 2175 | this.maxFieldSize = max; |
| 2176 | } |
| 2177 | |
| 2178 | /** |
| 2179 | * Set the maximum number of rows |
| 2180 | * |
| 2181 | * @param max |
| 2182 | * the new max rows limit; zero means unlimited |
| 2183 | * |
| 2184 | * @exception SQLException |
| 2185 | * if a database access error occurs |
| 2186 | * |
| 2187 | * @see getMaxRows |
| 2188 | */ |
| 2189 | public void setMaxRows(int max) throws SQLException { |
| 2190 | if ((max > MysqlDefs.MAX_ROWS) || (max < 0)) { |
| 2191 | throw SQLError |
| 2192 | .createSQLException( |
| 2193 | Messages.getString("Statement.15") + max //$NON-NLS-1$ |
| 2194 | + " > " //$NON-NLS-1$ //$NON-NLS-2$ |
| 2195 | + MysqlDefs.MAX_ROWS + ".", SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 2196 | } |
| 2197 | |
| 2198 | if (max == 0) { |
| 2199 | max = -1; |
| 2200 | } |
| 2201 | |
| 2202 | this.maxRows = max; |
| 2203 | this.maxRowsChanged = true; |
| 2204 | |
| 2205 | if (this.maxRows == -1) { |
| 2206 | this.connection.unsetMaxRows(this); |
| 2207 | this.maxRowsChanged = false; |
| 2208 | } else { |
| 2209 | // Most people don't use setMaxRows() |
| 2210 | // so don't penalize them |
| 2211 | // with the extra query it takes |
| 2212 | // to do it efficiently unless we need |
| 2213 | // to. |
| 2214 | this.connection.maxRowsChanged(this); |
| 2215 | } |
| 2216 | } |
| 2217 | |
| 2218 | /** |
| 2219 | * Sets the queryTimeout limit |
| 2220 | * |
| 2221 | * @param seconds - |
| 2222 | * the new query timeout limit in seconds |
| 2223 | * |
| 2224 | * @exception SQLException |
| 2225 | * if a database access error occurs |
| 2226 | */ |
| 2227 | public void setQueryTimeout(int seconds) throws SQLException { |
| 2228 | if (seconds < 0) { |
| 2229 | throw SQLError.createSQLException(Messages |
| 2230 | .getString("Statement.21"), //$NON-NLS-1$ |
| 2231 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 2232 | } |
| 2233 | |
| 2234 | this.timeout = seconds; |
| 2235 | } |
| 2236 | |
| 2237 | /** |
| 2238 | * Sets the concurrency for result sets generated by this statement |
| 2239 | * |
| 2240 | * @param concurrencyFlag |
| 2241 | * DOCUMENT ME! |
| 2242 | */ |
| 2243 | void setResultSetConcurrency(int concurrencyFlag) { |
| 2244 | this.resultSetConcurrency = concurrencyFlag; |
| 2245 | } |
| 2246 | |
| 2247 | /** |
| 2248 | * Sets the result set type for result sets generated by this statement |
| 2249 | * |
| 2250 | * @param typeFlag |
| 2251 | * DOCUMENT ME! |
| 2252 | */ |
| 2253 | void setResultSetType(int typeFlag) { |
| 2254 | this.resultSetType = typeFlag; |
| 2255 | } |
| 2256 | |
| 2257 | protected void getBatchedGeneratedKeys(java.sql.Statement batchedStatement) throws SQLException { |
| 2258 | if (this.retrieveGeneratedKeys) { |
| 2259 | java.sql.ResultSet rs = null; |
| 2260 | |
| 2261 | try { |
| 2262 | rs = batchedStatement.getGeneratedKeys(); |
| 2263 | |
| 2264 | while (rs.next()) { |
| 2265 | this.batchedGeneratedKeys |
| 2266 | .add(new byte[][] { rs.getBytes(1) }); |
| 2267 | } |
| 2268 | } finally { |
| 2269 | if (rs != null) { |
| 2270 | rs.close(); |
| 2271 | } |
| 2272 | } |
| 2273 | } |
| 2274 | } |
| 2275 | |
| 2276 | protected void getBatchedGeneratedKeys() throws SQLException { |
| 2277 | if (this.retrieveGeneratedKeys) { |
| 2278 | java.sql.ResultSet rs = null; |
| 2279 | |
| 2280 | try { |
| 2281 | rs = getGeneratedKeysInternal(); |
| 2282 | |
| 2283 | while (rs.next()) { |
| 2284 | this.batchedGeneratedKeys |
| 2285 | .add(new byte[][] { rs.getBytes(1) }); |
| 2286 | } |
| 2287 | } finally { |
| 2288 | if (rs != null) { |
| 2289 | rs.close(); |
| 2290 | } |
| 2291 | } |
| 2292 | } |
| 2293 | } |
| 2294 | |
| 2295 | /** |
| 2296 | * @return |
| 2297 | */ |
| 2298 | private boolean useServerFetch() throws SQLException { |
| 2299 | |
| 2300 | return this.connection.isCursorFetchEnabled() && this.fetchSize > 0 |
| 2301 | && this.resultSetConcurrency == ResultSet.CONCUR_READ_ONLY |
| 2302 | && this.resultSetType == ResultSet.TYPE_FORWARD_ONLY; |
| 2303 | } |
| 2304 | } |