| 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.profiler.ProfileEventSink; |
| 28 | import com.mysql.jdbc.profiler.ProfilerEvent; |
| 29 | import com.mysql.jdbc.util.LRUCache; |
| 30 | |
| 31 | import java.sql.DataTruncation; |
| 32 | import java.sql.SQLException; |
| 33 | import java.sql.SQLWarning; |
| 34 | import java.sql.Types; |
| 35 | |
| 36 | import java.util.ArrayList; |
| 37 | import java.util.Iterator; |
| 38 | import java.util.List; |
| 39 | import java.util.Locale; |
| 40 | import java.util.Map; |
| 41 | |
| 42 | /** |
| 43 | * A Statement object is used for executing a static SQL statement and obtaining |
| 44 | * the results produced by it. |
| 45 | * |
| 46 | * <p> |
| 47 | * Only one ResultSet per Statement can be open at any point in time. Therefore, |
| 48 | * if the reading of one ResultSet is interleaved with the reading of another, |
| 49 | * each must have been generated by different Statements. All statement execute |
| 50 | * methods implicitly close a statement's current ResultSet if an open one |
| 51 | * exists. |
| 52 | * </p> |
| 53 | * |
| 54 | * @author Mark Matthews |
| 55 | * @version $Id: Statement.java 5123 2006-04-03 12:44:51 -0500 (Mon, 03 Apr 2006) mmatthews $ |
| 56 | * |
| 57 | * @see java.sql.Statement |
| 58 | * @see ResultSet |
| 59 | */ |
| 60 | public class Statement implements java.sql.Statement { |
| 61 | class CachedResultSetMetaData { |
| 62 | /** Map column names (and all of their permutations) to column indices */ |
| 63 | Map columnNameToIndex = null; |
| 64 | |
| 65 | /** Cached Field info */ |
| 66 | Field[] fields; |
| 67 | |
| 68 | /** Map of fully-specified column names to column indices */ |
| 69 | Map fullColumnNameToIndex = null; |
| 70 | |
| 71 | /** Cached ResultSetMetaData */ |
| 72 | java.sql.ResultSetMetaData metadata; |
| 73 | } |
| 74 | |
| 75 | /** Used to generate IDs when profiling. */ |
| 76 | protected static int statementCounter = 1; |
| 77 | |
| 78 | public final static byte USES_VARIABLES_FALSE = 0; |
| 79 | |
| 80 | public final static byte USES_VARIABLES_TRUE = 1; |
| 81 | |
| 82 | public final static byte USES_VARIABLES_UNKNOWN = -1; |
| 83 | |
| 84 | /** Holds batched commands */ |
| 85 | protected List batchedArgs; |
| 86 | |
| 87 | /** The character converter to use (if available) */ |
| 88 | protected SingleByteCharsetConverter charConverter = null; |
| 89 | |
| 90 | /** The character encoding to use (if available) */ |
| 91 | protected String charEncoding = null; |
| 92 | |
| 93 | /** The connection that created us */ |
| 94 | protected Connection connection = null; |
| 95 | |
| 96 | /** The catalog in use */ |
| 97 | protected String currentCatalog = null; |
| 98 | |
| 99 | /** Should we process escape codes? */ |
| 100 | protected boolean doEscapeProcessing = true; |
| 101 | |
| 102 | /** If we're profiling, where should events go to? */ |
| 103 | protected ProfileEventSink eventSink = null; |
| 104 | |
| 105 | /** The number of rows to fetch at a time (currently ignored) */ |
| 106 | private int fetchSize = 0; |
| 107 | |
| 108 | /** Has this statement been closed? */ |
| 109 | protected boolean isClosed = false; |
| 110 | |
| 111 | /** The auto_increment value for the last insert */ |
| 112 | protected long lastInsertId = -1; |
| 113 | |
| 114 | /** The max field size for this statement */ |
| 115 | protected int maxFieldSize = MysqlIO.getMaxBuf(); |
| 116 | |
| 117 | /** |
| 118 | * The maximum number of rows to return for this statement (-1 means _all_ |
| 119 | * rows) |
| 120 | */ |
| 121 | protected int maxRows = -1; |
| 122 | |
| 123 | /** Has someone changed this for this statement? */ |
| 124 | protected boolean maxRowsChanged = false; |
| 125 | |
| 126 | /** List of currently-open ResultSets */ |
| 127 | protected List openResults = new ArrayList(); |
| 128 | |
| 129 | /** Are we in pedantic mode? */ |
| 130 | protected boolean pedantic = false; |
| 131 | |
| 132 | /** |
| 133 | * Where this statement was created, only used if profileSql or |
| 134 | * useUsageAdvisor set to true. |
| 135 | */ |
| 136 | protected Throwable pointOfOrigin; |
| 137 | |
| 138 | /** Should we profile? */ |
| 139 | protected boolean profileSQL = false; |
| 140 | |
| 141 | /** The current results */ |
| 142 | protected ResultSet results = null; |
| 143 | |
| 144 | /** The concurrency for this result set (updatable or not) */ |
| 145 | protected int resultSetConcurrency = 0; |
| 146 | |
| 147 | /** Cache of ResultSet metadata */ |
| 148 | protected LRUCache resultSetMetadataCache; |
| 149 | |
| 150 | /** The type of this result set (scroll sensitive or in-sensitive) */ |
| 151 | protected int resultSetType = 0; |
| 152 | |
| 153 | /** Used to identify this statement when profiling. */ |
| 154 | protected int statementId; |
| 155 | |
| 156 | /** The timeout for a query */ |
| 157 | protected int timeout = 0; |
| 158 | |
| 159 | /** The update count for this statement */ |
| 160 | protected long updateCount = -1; |
| 161 | |
| 162 | /** Should we use the usage advisor? */ |
| 163 | protected boolean useUsageAdvisor = false; |
| 164 | |
| 165 | /** The warnings chain. */ |
| 166 | protected SQLWarning warningChain = null; |
| 167 | |
| 168 | protected ArrayList batchedGeneratedKeys = null; |
| 169 | |
| 170 | protected boolean retrieveGeneratedKeys = false; |
| 171 | |
| 172 | /** |
| 173 | * Constructor for a Statement. |
| 174 | * |
| 175 | * @param c |
| 176 | * the Connection instantation that creates us |
| 177 | * @param catalog |
| 178 | * the database name in use when we were created |
| 179 | * |
| 180 | * @throws SQLException |
| 181 | * if an error occurs. |
| 182 | */ |
| 183 | public Statement(Connection c, String catalog) throws SQLException { |
| 184 | if ((c == null) || c.isClosed()) { |
| 185 | throw new SQLException(Messages.getString("Statement.0"), //$NON-NLS-1$ |
| 186 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN); //$NON-NLS-1$ //$NON-NLS-2$ |
| 187 | } |
| 188 | |
| 189 | this.connection = c; |
| 190 | this.currentCatalog = catalog; |
| 191 | this.pedantic = this.connection.getPedantic(); |
| 192 | |
| 193 | if (!this.connection.getDontTrackOpenResources()) { |
| 194 | this.connection.registerStatement(this); |
| 195 | } |
| 196 | |
| 197 | // |
| 198 | // Adjust, if we know it |
| 199 | // |
| 200 | if (this.connection != null) { |
| 201 | this.maxFieldSize = this.connection.getMaxAllowedPacket(); |
| 202 | } |
| 203 | |
| 204 | if (this.connection.getUseUnicode()) { |
| 205 | this.charEncoding = this.connection.getEncoding(); |
| 206 | |
| 207 | this.charConverter = this.connection |
| 208 | .getCharsetConverter(this.charEncoding); |
| 209 | } |
| 210 | |
| 211 | boolean profiling = this.connection.getProfileSql() |
| 212 | || this.connection.getUseUsageAdvisor(); |
| 213 | |
| 214 | if (this.connection.getAutoGenerateTestcaseScript() || profiling) { |
| 215 | this.statementId = statementCounter++; |
| 216 | } |
| 217 | |
| 218 | if (profiling) { |
| 219 | this.pointOfOrigin = new Throwable(); |
| 220 | this.profileSQL = this.connection.getProfileSql(); |
| 221 | this.useUsageAdvisor = this.connection.getUseUsageAdvisor(); |
| 222 | this.eventSink = ProfileEventSink.getInstance(this.connection); |
| 223 | } |
| 224 | |
| 225 | int maxRowsConn = this.connection.getMaxRows(); |
| 226 | |
| 227 | if (maxRowsConn != -1) { |
| 228 | setMaxRows(maxRowsConn); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * DOCUMENT ME! |
| 234 | * |
| 235 | * @param sql |
| 236 | * DOCUMENT ME! |
| 237 | * |
| 238 | * @throws SQLException |
| 239 | * DOCUMENT ME! |
| 240 | */ |
| 241 | public synchronized void addBatch(String sql) throws SQLException { |
| 242 | if (this.batchedArgs == null) { |
| 243 | this.batchedArgs = new ArrayList(); |
| 244 | } |
| 245 | |
| 246 | if (sql != null) { |
| 247 | this.batchedArgs.add(sql); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Cancel can be used by one thread to cancel a statement that is being |
| 253 | * executed by another thread. However this driver is synchronous, so this |
| 254 | * really has no meaning - we define it as a no-op (i.e. you can't cancel, |
| 255 | * but there is no error if you try.) |
| 256 | * |
| 257 | * @exception SQLException |
| 258 | * only because thats the spec. |
| 259 | */ |
| 260 | public void cancel() throws SQLException { |
| 261 | // No-op |
| 262 | } |
| 263 | |
| 264 | // --------------------------JDBC 2.0----------------------------- |
| 265 | |
| 266 | /** |
| 267 | * Checks if closed() has been called, and throws an exception if so |
| 268 | * |
| 269 | * @throws SQLException |
| 270 | * if this statement has been closed |
| 271 | */ |
| 272 | protected void checkClosed() throws SQLException { |
| 273 | if (this.isClosed) { |
| 274 | throw new SQLException(Messages.getString("Statement.49"), //$NON-NLS-1$ |
| 275 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN); //$NON-NLS-1$ |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * Checks if the given SQL query with the given first non-ws char is a DML |
| 281 | * statement. Throws an exception if it is. |
| 282 | * |
| 283 | * @param sql |
| 284 | * the SQL to check |
| 285 | * @param firstStatementChar |
| 286 | * the UC first non-ws char of the statement |
| 287 | * |
| 288 | * @throws SQLException |
| 289 | * if the statement contains DML |
| 290 | */ |
| 291 | protected void checkForDml(String sql, char firstStatementChar) |
| 292 | throws SQLException { |
| 293 | if ((firstStatementChar == 'I') || (firstStatementChar == 'U') |
| 294 | || (firstStatementChar == 'D') || (firstStatementChar == 'A') |
| 295 | || (firstStatementChar == 'C')) { |
| 296 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "INSERT") //$NON-NLS-1$ |
| 297 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "UPDATE") //$NON-NLS-1$ |
| 298 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "DELETE") //$NON-NLS-1$ |
| 299 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "DROP") //$NON-NLS-1$ |
| 300 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "CREATE") //$NON-NLS-1$ |
| 301 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "ALTER")) { //$NON-NLS-1$ |
| 302 | throw new SQLException(Messages.getString("Statement.57"), //$NON-NLS-1$ |
| 303 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * Method checkNullOrEmptyQuery. |
| 310 | * |
| 311 | * @param sql |
| 312 | * the SQL to check |
| 313 | * |
| 314 | * @throws SQLException |
| 315 | * if query is null or empty. |
| 316 | */ |
| 317 | protected void checkNullOrEmptyQuery(String sql) throws SQLException { |
| 318 | if (sql == null) { |
| 319 | throw new SQLException(Messages.getString("Statement.59"), //$NON-NLS-1$ |
| 320 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 321 | } |
| 322 | |
| 323 | if (sql.length() == 0) { |
| 324 | throw new SQLException(Messages.getString("Statement.61"), //$NON-NLS-1$ |
| 325 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * JDBC 2.0 Make the set of commands in the current batch empty. This method |
| 331 | * is optional. |
| 332 | * |
| 333 | * @exception SQLException |
| 334 | * if a database-access error occurs, or the driver does not |
| 335 | * support batch statements |
| 336 | */ |
| 337 | public synchronized void clearBatch() throws SQLException { |
| 338 | if (this.batchedArgs != null) { |
| 339 | this.batchedArgs.clear(); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * After this call, getWarnings returns null until a new warning is reported |
| 345 | * for this Statement. |
| 346 | * |
| 347 | * @exception SQLException |
| 348 | * if a database access error occurs (why?) |
| 349 | */ |
| 350 | public synchronized void clearWarnings() throws SQLException { |
| 351 | this.warningChain = null; |
| 352 | } |
| 353 | |
| 354 | /** |
| 355 | * In many cases, it is desirable to immediately release a Statement's |
| 356 | * database and JDBC resources instead of waiting for this to happen when it |
| 357 | * is automatically closed. The close method provides this immediate |
| 358 | * release. |
| 359 | * |
| 360 | * <p> |
| 361 | * <B>Note:</B> A Statement is automatically closed when it is garbage |
| 362 | * collected. When a Statement is closed, its current ResultSet, if one |
| 363 | * exists, is also closed. |
| 364 | * </p> |
| 365 | * |
| 366 | * @exception SQLException |
| 367 | * if a database access error occurs |
| 368 | */ |
| 369 | public synchronized void close() throws SQLException { |
| 370 | realClose(true); |
| 371 | } |
| 372 | |
| 373 | /** |
| 374 | * Close any open result sets that have been 'held open' |
| 375 | */ |
| 376 | protected void closeAllOpenResults() { |
| 377 | if (this.openResults != null) { |
| 378 | for (Iterator iter = this.openResults.iterator(); iter.hasNext();) { |
| 379 | ResultSet element = (ResultSet) iter.next(); |
| 380 | |
| 381 | try { |
| 382 | element.realClose(false); |
| 383 | } catch (SQLException sqlEx) { |
| 384 | AssertionFailedException.shouldNotHappen(sqlEx); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | this.openResults.clear(); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * We only stream result sets when they are forward-only, read-only, and the |
| 394 | * fetch size has been set to Integer.MIN_VALUE |
| 395 | * |
| 396 | * @return true if this result set should be streamed row at-a-time, rather |
| 397 | * than read all at once. |
| 398 | */ |
| 399 | protected boolean createStreamingResultSet() { |
| 400 | return ((this.resultSetType == java.sql.ResultSet.TYPE_FORWARD_ONLY) |
| 401 | && (this.resultSetConcurrency == java.sql.ResultSet.CONCUR_READ_ONLY) && (this.fetchSize == Integer.MIN_VALUE)); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Workaround for containers that 'check' for sane values of |
| 406 | * Statement.setFetchSize(). |
| 407 | * |
| 408 | * @throws SQLException |
| 409 | */ |
| 410 | public void enableStreamingResults() throws SQLException { |
| 411 | setFetchSize(Integer.MIN_VALUE); |
| 412 | setResultSetType(ResultSet.TYPE_FORWARD_ONLY); |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Execute a SQL statement that may return multiple results. We don't have |
| 417 | * to worry about this since we do not support multiple ResultSets. You can |
| 418 | * use getResultSet or getUpdateCount to retrieve the result. |
| 419 | * |
| 420 | * @param sql |
| 421 | * any SQL statement |
| 422 | * |
| 423 | * @return true if the next result is a ResulSet, false if it is an update |
| 424 | * count or there are no more results |
| 425 | * |
| 426 | * @exception SQLException |
| 427 | * if a database access error occurs |
| 428 | */ |
| 429 | public synchronized boolean execute(String sql) throws SQLException { |
| 430 | checkNullOrEmptyQuery(sql); |
| 431 | |
| 432 | checkClosed(); |
| 433 | |
| 434 | char firstNonWsChar = StringUtils.firstNonWsCharUc(sql); |
| 435 | |
| 436 | boolean isSelect = true; |
| 437 | |
| 438 | if (firstNonWsChar != 'S') { |
| 439 | isSelect = false; |
| 440 | |
| 441 | if (this.connection.isReadOnly()) { |
| 442 | throw new SQLException(Messages.getString("Statement.27") //$NON-NLS-1$ |
| 443 | + Messages.getString("Statement.28"), //$NON-NLS-1$ |
| 444 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | if (this.doEscapeProcessing) { |
| 449 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 450 | this.connection.serverSupportsConvertFn()); |
| 451 | |
| 452 | if (escapedSqlResult instanceof String) { |
| 453 | sql = (String) escapedSqlResult; |
| 454 | } else { |
| 455 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | if (this.results != null) { |
| 460 | if (!this.connection.getHoldResultsOpenOverStatementClose()) { |
| 461 | this.results.realClose(false); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | CachedResultSetMetaData cachedMetaData = null; |
| 466 | |
| 467 | ResultSet rs = null; |
| 468 | |
| 469 | // If there isn't a limit clause in the SQL |
| 470 | // then limit the number of rows to return in |
| 471 | // an efficient manner. Only do this if |
| 472 | // setMaxRows() hasn't been used on any Statements |
| 473 | // generated from the current Connection (saves |
| 474 | // a query, and network traffic). |
| 475 | synchronized (this.connection.getMutex()) { |
| 476 | this.batchedGeneratedKeys = null; |
| 477 | |
| 478 | String oldCatalog = null; |
| 479 | |
| 480 | if (!this.connection.getCatalog().equals(this.currentCatalog)) { |
| 481 | oldCatalog = this.connection.getCatalog(); |
| 482 | this.connection.setCatalog(this.currentCatalog); |
| 483 | } |
| 484 | |
| 485 | // |
| 486 | // Check if we have cached metadata for this query... |
| 487 | // |
| 488 | if (this.connection.getCacheResultSetMetadata()) { |
| 489 | cachedMetaData = getCachedMetaData(sql); |
| 490 | } |
| 491 | |
| 492 | // |
| 493 | // Only apply max_rows to selects |
| 494 | // |
| 495 | if (this.connection.useMaxRows()) { |
| 496 | int rowLimit = -1; |
| 497 | |
| 498 | if (isSelect) { |
| 499 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
| 500 | rowLimit = this.maxRows; |
| 501 | } else { |
| 502 | if (this.maxRows <= 0) { |
| 503 | this.connection.execSQL(this, |
| 504 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, //$NON-NLS-1$ |
| 505 | null, java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 506 | java.sql.ResultSet.CONCUR_READ_ONLY, false, |
| 507 | false, this.currentCatalog, true); //$NON-NLS-1$ |
| 508 | } else { |
| 509 | this.connection |
| 510 | .execSQL( |
| 511 | this, |
| 512 | "SET OPTION SQL_SELECT_LIMIT=" + this.maxRows, //$NON-NLS-1$ |
| 513 | -1, |
| 514 | null, |
| 515 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 516 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 517 | false, false, this.currentCatalog, |
| 518 | true); //$NON-NLS-1$ |
| 519 | } |
| 520 | } |
| 521 | } else { |
| 522 | this.connection.execSQL(this, |
| 523 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, null, //$NON-NLS-1$ |
| 524 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 525 | java.sql.ResultSet.CONCUR_READ_ONLY, false, false, |
| 526 | this.currentCatalog, true); //$NON-NLS-1$ |
| 527 | } |
| 528 | |
| 529 | // Finally, execute the query |
| 530 | rs = this.connection.execSQL(this, sql, rowLimit, null, |
| 531 | this.resultSetType, this.resultSetConcurrency, |
| 532 | createStreamingResultSet(), isSelect, |
| 533 | this.currentCatalog, (cachedMetaData == null)); |
| 534 | } else { |
| 535 | rs = this.connection.execSQL(this, sql, -1, null, |
| 536 | this.resultSetType, this.resultSetConcurrency, |
| 537 | createStreamingResultSet(), isSelect, |
| 538 | this.currentCatalog, (cachedMetaData == null)); |
| 539 | } |
| 540 | |
| 541 | if (oldCatalog != null) { |
| 542 | this.connection.setCatalog(oldCatalog); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | this.lastInsertId = rs.getUpdateID(); |
| 547 | |
| 548 | if (rs != null) { |
| 549 | this.results = rs; |
| 550 | |
| 551 | rs.setFirstCharOfQuery(firstNonWsChar); |
| 552 | |
| 553 | if (rs.reallyResult()) { |
| 554 | if (cachedMetaData != null) { |
| 555 | initializeResultsMetadataFromCache(sql, cachedMetaData, |
| 556 | this.results); |
| 557 | } else { |
| 558 | if (this.connection.getCacheResultSetMetadata()) { |
| 559 | initializeResultsMetadataFromCache(sql, |
| 560 | null /* will be created */, this.results); |
| 561 | } |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | return ((rs != null) && rs.reallyResult()); |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * @see Statement#execute(String, int) |
| 571 | */ |
| 572 | public boolean execute(String sql, int returnGeneratedKeys) |
| 573 | throws SQLException { |
| 574 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
| 575 | checkClosed(); |
| 576 | |
| 577 | synchronized (this.connection.getMutex()) { |
| 578 | // If this is a 'REPLACE' query, we need to be able to parse |
| 579 | // the 'info' message returned from the server to determine |
| 580 | // the actual number of keys generated. |
| 581 | boolean readInfoMsgState = this.connection |
| 582 | .isReadInfoMsgEnabled(); |
| 583 | this.connection.setReadInfoMsgEnabled(true); |
| 584 | |
| 585 | try { |
| 586 | return execute(sql); |
| 587 | } finally { |
| 588 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 589 | } |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | return execute(sql); |
| 594 | } |
| 595 | |
| 596 | /** |
| 597 | * @see Statement#execute(String, int[]) |
| 598 | */ |
| 599 | public boolean execute(String sql, int[] generatedKeyIndices) |
| 600 | throws SQLException { |
| 601 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
| 602 | checkClosed(); |
| 603 | |
| 604 | synchronized (this.connection.getMutex()) { |
| 605 | // If this is a 'REPLACE' query, we need to be able to parse |
| 606 | // the 'info' message returned from the server to determine |
| 607 | // the actual number of keys generated. |
| 608 | boolean readInfoMsgState = this.connection |
| 609 | .isReadInfoMsgEnabled(); |
| 610 | this.connection.setReadInfoMsgEnabled(true); |
| 611 | |
| 612 | try { |
| 613 | return execute(sql); |
| 614 | } finally { |
| 615 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 616 | } |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | return execute(sql); |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * @see Statement#execute(String, String[]) |
| 625 | */ |
| 626 | public boolean execute(String sql, String[] generatedKeyNames) |
| 627 | throws SQLException { |
| 628 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
| 629 | checkClosed(); |
| 630 | |
| 631 | synchronized (this.connection.getMutex()) { |
| 632 | // If this is a 'REPLACE' query, we need to be able to parse |
| 633 | // the 'info' message returned from the server to determine |
| 634 | // the actual number of keys generated. |
| 635 | boolean readInfoMsgState = this.connection |
| 636 | .isReadInfoMsgEnabled(); |
| 637 | this.connection.setReadInfoMsgEnabled(true); |
| 638 | |
| 639 | try { |
| 640 | return execute(sql); |
| 641 | } finally { |
| 642 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 643 | } |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | return execute(sql); |
| 648 | } |
| 649 | |
| 650 | /** |
| 651 | * JDBC 2.0 Submit a batch of commands to the database for execution. This |
| 652 | * method is optional. |
| 653 | * |
| 654 | * @return an array of update counts containing one element for each command |
| 655 | * in the batch. The array is ordered according to the order in |
| 656 | * which commands were inserted into the batch |
| 657 | * |
| 658 | * @exception SQLException |
| 659 | * if a database-access error occurs, or the driver does not |
| 660 | * support batch statements |
| 661 | * @throws java.sql.BatchUpdateException |
| 662 | * DOCUMENT ME! |
| 663 | */ |
| 664 | public synchronized int[] executeBatch() throws SQLException { |
| 665 | if (this.connection.isReadOnly()) { |
| 666 | throw new SQLException(Messages.getString("Statement.34") //$NON-NLS-1$ |
| 667 | + Messages.getString("Statement.35"), //$NON-NLS-1$ |
| 668 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 669 | } |
| 670 | |
| 671 | if (this.results != null) { |
| 672 | if (!this.connection.getHoldResultsOpenOverStatementClose()) { |
| 673 | this.results.realClose(false); |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | synchronized (this.connection.getMutex()) { |
| 678 | try { |
| 679 | this.retrieveGeneratedKeys = true; |
| 680 | |
| 681 | int[] updateCounts = null; |
| 682 | |
| 683 | if (this.batchedArgs != null) { |
| 684 | |
| 685 | int nbrCommands = this.batchedArgs.size(); |
| 686 | |
| 687 | this.batchedGeneratedKeys = new ArrayList(this.batchedArgs.size()); |
| 688 | |
| 689 | boolean multiQueriesEnabled = this.connection.getAllowMultiQueries(); |
| 690 | |
| 691 | if (this.connection.versionMeetsMinimum(4, 1, 1) && |
| 692 | (multiQueriesEnabled || |
| 693 | (this.connection.getRewriteBatchedStatements() && |
| 694 | nbrCommands > 4))) { |
| 695 | return executeBatchUsingMultiQueries(multiQueriesEnabled, nbrCommands); |
| 696 | } |
| 697 | |
| 698 | updateCounts = new int[nbrCommands]; |
| 699 | |
| 700 | for (int i = 0; i < nbrCommands; i++) { |
| 701 | updateCounts[i] = -3; |
| 702 | } |
| 703 | |
| 704 | SQLException sqlEx = null; |
| 705 | |
| 706 | int commandIndex = 0; |
| 707 | |
| 708 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
| 709 | try { |
| 710 | updateCounts[commandIndex] = executeUpdate((String) this.batchedArgs |
| 711 | .get(commandIndex), true); |
| 712 | getBatchedGeneratedKeys(); |
| 713 | } catch (SQLException ex) { |
| 714 | updateCounts[commandIndex] = EXECUTE_FAILED; |
| 715 | |
| 716 | if (this.connection.getContinueBatchOnError()) { |
| 717 | sqlEx = ex; |
| 718 | } else { |
| 719 | int[] newUpdateCounts = new int[commandIndex]; |
| 720 | System.arraycopy(updateCounts, 0, newUpdateCounts, |
| 721 | 0, commandIndex); |
| 722 | |
| 723 | throw new java.sql.BatchUpdateException(ex |
| 724 | .getMessage(), ex.getSQLState(), ex |
| 725 | .getErrorCode(), newUpdateCounts); |
| 726 | } |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | if (sqlEx != null) { |
| 731 | throw new java.sql.BatchUpdateException(sqlEx.getMessage(), |
| 732 | sqlEx.getSQLState(), sqlEx.getErrorCode(), |
| 733 | updateCounts); |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | return (updateCounts != null) ? updateCounts : new int[0]; |
| 738 | } finally { |
| 739 | this.retrieveGeneratedKeys = false; |
| 740 | |
| 741 | clearBatch(); |
| 742 | } |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * Rewrites batch into a single query to send to the server. This method |
| 748 | * will constrain each batch to be shorter than max_allowed_packet on the |
| 749 | * server. |
| 750 | * |
| 751 | * @return update counts in the same manner as executeBatch() |
| 752 | * @throws SQLException |
| 753 | */ |
| 754 | private int[] executeBatchUsingMultiQueries(boolean multiQueriesEnabled, |
| 755 | int nbrCommands) throws SQLException { |
| 756 | |
| 757 | if (!multiQueriesEnabled) { |
| 758 | this.connection.getIO().enableMultiQueries(); |
| 759 | } |
| 760 | |
| 761 | try { |
| 762 | int[] updateCounts = new int[nbrCommands]; |
| 763 | |
| 764 | for (int i = 0; i < nbrCommands; i++) { |
| 765 | updateCounts[i] = -3; |
| 766 | } |
| 767 | |
| 768 | int commandIndex = 0; |
| 769 | |
| 770 | StringBuffer queryBuf = new StringBuffer(); |
| 771 | |
| 772 | java.sql.Statement batchStmt = this.connection.createStatement(); |
| 773 | |
| 774 | int counter = 0; |
| 775 | |
| 776 | int numberOfBytesPerChar = 1; |
| 777 | |
| 778 | String connectionEncoding = this.connection.getEncoding(); |
| 779 | |
| 780 | if (StringUtils.startsWithIgnoreCase(connectionEncoding, "utf")) { |
| 781 | numberOfBytesPerChar = 3; |
| 782 | } else if (CharsetMapping.isMultibyteCharset(connectionEncoding)) { |
| 783 | numberOfBytesPerChar = 2; |
| 784 | } |
| 785 | |
| 786 | int escapeAdjust = 1; |
| 787 | |
| 788 | if (this.doEscapeProcessing) { |
| 789 | escapeAdjust = 2; /* We assume packet _could_ grow by this amount, as we're not |
| 790 | sure how big statement will end up after |
| 791 | escape processing */ |
| 792 | } |
| 793 | |
| 794 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
| 795 | String nextQuery = (String) this.batchedArgs.get(commandIndex); |
| 796 | |
| 797 | if (((((queryBuf.length() + nextQuery.length()) |
| 798 | * numberOfBytesPerChar) + 1 /* for semicolon */ |
| 799 | + MysqlIO.HEADER_LENGTH) * escapeAdjust) + 32 > this.connection |
| 800 | .getMaxAllowedPacket()) { |
| 801 | batchStmt.execute(queryBuf.toString()); |
| 802 | |
| 803 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 804 | long generatedKeyStart = ((com.mysql.jdbc.Statement)batchStmt).getLastInsertID(); |
| 805 | byte[][] row = new byte[1][]; |
| 806 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 807 | this.batchedGeneratedKeys.add(row); |
| 808 | |
| 809 | while (batchStmt.getMoreResults() |
| 810 | || batchStmt.getUpdateCount() != -1) { |
| 811 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 812 | row = new byte[1][]; |
| 813 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 814 | this.batchedGeneratedKeys.add(row); |
| 815 | } |
| 816 | |
| 817 | queryBuf = new StringBuffer(); |
| 818 | } |
| 819 | |
| 820 | queryBuf.append(nextQuery); |
| 821 | queryBuf.append(";"); |
| 822 | } |
| 823 | |
| 824 | if (queryBuf.length() > 0) { |
| 825 | batchStmt.execute(queryBuf.toString()); |
| 826 | |
| 827 | long generatedKeyStart = ((com.mysql.jdbc.Statement)batchStmt).getLastInsertID(); |
| 828 | byte[][] row = new byte[1][]; |
| 829 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 830 | this.batchedGeneratedKeys.add(row); |
| 831 | |
| 832 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 833 | |
| 834 | |
| 835 | while (batchStmt.getMoreResults() |
| 836 | || batchStmt.getUpdateCount() != -1) { |
| 837 | updateCounts[counter++] = batchStmt.getUpdateCount(); |
| 838 | row = new byte[1][]; |
| 839 | row[0] = Long.toString(generatedKeyStart++).getBytes(); |
| 840 | this.batchedGeneratedKeys.add(row); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | return (updateCounts != null) ? updateCounts : new int[0]; |
| 845 | } finally { |
| 846 | if (!multiQueriesEnabled) { |
| 847 | this.connection.getIO().disableMultiQueries(); |
| 848 | } |
| 849 | } |
| 850 | } |
| 851 | |
| 852 | /** |
| 853 | * Execute a SQL statement that retruns a single ResultSet |
| 854 | * |
| 855 | * @param sql |
| 856 | * typically a static SQL SELECT statement |
| 857 | * |
| 858 | * @return a ResulSet that contains the data produced by the query |
| 859 | * |
| 860 | * @exception SQLException |
| 861 | * if a database access error occurs |
| 862 | */ |
| 863 | public synchronized java.sql.ResultSet executeQuery(String sql) |
| 864 | throws SQLException { |
| 865 | checkNullOrEmptyQuery(sql); |
| 866 | |
| 867 | checkClosed(); |
| 868 | |
| 869 | if (this.doEscapeProcessing) { |
| 870 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 871 | this.connection.serverSupportsConvertFn()); |
| 872 | |
| 873 | if (escapedSqlResult instanceof String) { |
| 874 | sql = (String) escapedSqlResult; |
| 875 | } else { |
| 876 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | char firstStatementChar = StringUtils.firstNonWsCharUc(sql); |
| 881 | |
| 882 | checkForDml(sql, firstStatementChar); |
| 883 | |
| 884 | if (this.results != null) { |
| 885 | if (!this.connection.getHoldResultsOpenOverStatementClose()) { |
| 886 | this.results.realClose(false); |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | CachedResultSetMetaData cachedMetaData = null; |
| 891 | |
| 892 | // If there isn't a limit clause in the SQL |
| 893 | // then limit the number of rows to return in |
| 894 | // an efficient manner. Only do this if |
| 895 | // setMaxRows() hasn't been used on any Statements |
| 896 | // generated from the current Connection (saves |
| 897 | // a query, and network traffic). |
| 898 | synchronized (this.connection.getMutex()) { |
| 899 | this.batchedGeneratedKeys = null; |
| 900 | |
| 901 | String oldCatalog = null; |
| 902 | |
| 903 | if (!this.connection.getCatalog().equals(this.currentCatalog)) { |
| 904 | oldCatalog = this.connection.getCatalog(); |
| 905 | this.connection.setCatalog(this.currentCatalog); |
| 906 | } |
| 907 | |
| 908 | // |
| 909 | // Check if we have cached metadata for this query... |
| 910 | // |
| 911 | if (this.connection.getCacheResultSetMetadata()) { |
| 912 | cachedMetaData = getCachedMetaData(sql); |
| 913 | } |
| 914 | |
| 915 | if (this.connection.useMaxRows()) { |
| 916 | // We need to execute this all together |
| 917 | // So synchronize on the Connection's mutex (because |
| 918 | // even queries going through there synchronize |
| 919 | // on the connection |
| 920 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
| 921 | this.results = this.connection.execSQL(this, sql, |
| 922 | this.maxRows, null, this.resultSetType, |
| 923 | this.resultSetConcurrency, |
| 924 | createStreamingResultSet(), true, |
| 925 | this.currentCatalog, (cachedMetaData == null)); |
| 926 | } else { |
| 927 | if (this.maxRows <= 0) { |
| 928 | this.connection |
| 929 | .execSQL( |
| 930 | this, |
| 931 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", -1, null, //$NON-NLS-1$ |
| 932 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 933 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 934 | false, false, this.currentCatalog, true); //$NON-NLS-1$ |
| 935 | } else { |
| 936 | this.connection |
| 937 | .execSQL( |
| 938 | this, |
| 939 | "SET OPTION SQL_SELECT_LIMIT=" + this.maxRows, -1, //$NON-NLS-1$ |
| 940 | null, |
| 941 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 942 | java.sql.ResultSet.CONCUR_READ_ONLY, |
| 943 | false, false, this.currentCatalog, true); //$NON-NLS-1$ |
| 944 | } |
| 945 | |
| 946 | this.results = this.connection.execSQL(this, sql, -1, null, |
| 947 | this.resultSetType, this.resultSetConcurrency, |
| 948 | createStreamingResultSet(), true, |
| 949 | this.currentCatalog, (cachedMetaData == null)); |
| 950 | |
| 951 | if (oldCatalog != null) { |
| 952 | this.connection.setCatalog(oldCatalog); |
| 953 | } |
| 954 | } |
| 955 | } else { |
| 956 | this.results = this.connection.execSQL(this, sql, -1, null, |
| 957 | this.resultSetType, this.resultSetConcurrency, |
| 958 | createStreamingResultSet(), true, this.currentCatalog, |
| 959 | (cachedMetaData == null)); |
| 960 | } |
| 961 | |
| 962 | if (oldCatalog != null) { |
| 963 | this.connection.setCatalog(oldCatalog); |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | this.lastInsertId = this.results.getUpdateID(); |
| 968 | |
| 969 | /* |
| 970 | * if (!this.results.reallyResult()) { if |
| 971 | * (!this.connection.getAutoCommit()) { this.connection.rollback(); } |
| 972 | * |
| 973 | * throw new SQLException(Messages.getString("Statement.40"), |
| 974 | * //$NON-NLS-1$ SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ } |
| 975 | */ |
| 976 | if (cachedMetaData != null) { |
| 977 | initializeResultsMetadataFromCache(sql, cachedMetaData, |
| 978 | this.results); |
| 979 | } else { |
| 980 | if (this.connection.getCacheResultSetMetadata()) { |
| 981 | initializeResultsMetadataFromCache(sql, |
| 982 | null /* will be created */, this.results); |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | return this.results; |
| 987 | } |
| 988 | |
| 989 | /** |
| 990 | * Execute a SQL INSERT, UPDATE or DELETE statement. In addition SQL |
| 991 | * statements that return nothing such as SQL DDL statements can be executed |
| 992 | * Any IDs generated for AUTO_INCREMENT fields can be retrieved by casting |
| 993 | * this Statement to org.gjt.mm.mysql.Statement and calling the |
| 994 | * getLastInsertID() method. |
| 995 | * |
| 996 | * @param sql |
| 997 | * a SQL statement |
| 998 | * |
| 999 | * @return either a row count, or 0 for SQL commands |
| 1000 | * |
| 1001 | * @exception SQLException |
| 1002 | * if a database access error occurs |
| 1003 | */ |
| 1004 | public synchronized int executeUpdate(String sql) throws SQLException { |
| 1005 | return executeUpdate(sql, false); |
| 1006 | } |
| 1007 | |
| 1008 | protected synchronized int executeUpdate(String sql, boolean isBatch) throws SQLException { |
| 1009 | checkNullOrEmptyQuery(sql); |
| 1010 | |
| 1011 | checkClosed(); |
| 1012 | |
| 1013 | if (this.connection.isReadOnly()) { |
| 1014 | throw new SQLException(Messages.getString("Statement.42") //$NON-NLS-1$ |
| 1015 | + Messages.getString("Statement.43"), //$NON-NLS-1$ |
| 1016 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1017 | } |
| 1018 | |
| 1019 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "select")) { //$NON-NLS-1$ |
| 1020 | throw new SQLException(Messages.getString("Statement.46"), //$NON-NLS-1$ |
| 1021 | "01S03"); //$NON-NLS-1$ |
| 1022 | } |
| 1023 | |
| 1024 | char firstStatementChar = StringUtils.firstNonWsCharUc(sql); |
| 1025 | |
| 1026 | if (this.doEscapeProcessing) { |
| 1027 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
| 1028 | this.connection.serverSupportsConvertFn()); |
| 1029 | |
| 1030 | if (escapedSqlResult instanceof String) { |
| 1031 | sql = (String) escapedSqlResult; |
| 1032 | } else { |
| 1033 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
| 1034 | } |
| 1035 | } |
| 1036 | |
| 1037 | if (this.results != null) { |
| 1038 | if (!this.connection.getHoldResultsOpenOverStatementClose()) { |
| 1039 | this.results.realClose(false); |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | // The checking and changing of catalogs |
| 1044 | // must happen in sequence, so synchronize |
| 1045 | // on the same mutex that _conn is using |
| 1046 | ResultSet rs = null; |
| 1047 | |
| 1048 | synchronized (this.connection.getMutex()) { |
| 1049 | if (!isBatch) { |
| 1050 | this.batchedGeneratedKeys = null; |
| 1051 | } |
| 1052 | |
| 1053 | String oldCatalog = null; |
| 1054 | |
| 1055 | if (!this.connection.getCatalog().equals(this.currentCatalog)) { |
| 1056 | oldCatalog = this.connection.getCatalog(); |
| 1057 | this.connection.setCatalog(this.currentCatalog); |
| 1058 | } |
| 1059 | |
| 1060 | // |
| 1061 | // Only apply max_rows to selects |
| 1062 | // |
| 1063 | if (this.connection.useMaxRows()) { |
| 1064 | this.connection.execSQL(this, |
| 1065 | "SET OPTION SQL_SELECT_LIMIT=DEFAULT", //$NON-NLS-1$ |
| 1066 | -1, null, java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1067 | java.sql.ResultSet.CONCUR_READ_ONLY, false, false, |
| 1068 | this.currentCatalog, true); |
| 1069 | } |
| 1070 | |
| 1071 | rs = this.connection |
| 1072 | .execSQL(this, sql, -1, null, |
| 1073 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
| 1074 | java.sql.ResultSet.CONCUR_READ_ONLY, false, false, |
| 1075 | this.currentCatalog, true /* force read of field info on DML */, |
| 1076 | USES_VARIABLES_FALSE, |
| 1077 | isBatch); |
| 1078 | |
| 1079 | if (oldCatalog != null) { |
| 1080 | this.connection.setCatalog(oldCatalog); |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | this.results = rs; |
| 1085 | |
| 1086 | rs.setFirstCharOfQuery(firstStatementChar); |
| 1087 | |
| 1088 | this.updateCount = rs.getUpdateCount(); |
| 1089 | |
| 1090 | int truncatedUpdateCount = 0; |
| 1091 | |
| 1092 | if (this.updateCount > Integer.MAX_VALUE) { |
| 1093 | truncatedUpdateCount = Integer.MAX_VALUE; |
| 1094 | } else { |
| 1095 | truncatedUpdateCount = (int) this.updateCount; |
| 1096 | } |
| 1097 | |
| 1098 | this.lastInsertId = rs.getUpdateID(); |
| 1099 | |
| 1100 | return truncatedUpdateCount; |
| 1101 | } |
| 1102 | |
| 1103 | /** |
| 1104 | * @see Statement#executeUpdate(String, int) |
| 1105 | */ |
| 1106 | public int executeUpdate(String sql, int returnGeneratedKeys) |
| 1107 | throws SQLException { |
| 1108 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
| 1109 | checkClosed(); |
| 1110 | |
| 1111 | synchronized (this.connection.getMutex()) { |
| 1112 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1113 | // the 'info' message returned from the server to determine |
| 1114 | // the actual number of keys generated. |
| 1115 | boolean readInfoMsgState = this.connection |
| 1116 | .isReadInfoMsgEnabled(); |
| 1117 | this.connection.setReadInfoMsgEnabled(true); |
| 1118 | |
| 1119 | try { |
| 1120 | return executeUpdate(sql); |
| 1121 | } finally { |
| 1122 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 1123 | } |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | return executeUpdate(sql); |
| 1128 | } |
| 1129 | |
| 1130 | /** |
| 1131 | * @see Statement#executeUpdate(String, int[]) |
| 1132 | */ |
| 1133 | public int executeUpdate(String sql, int[] generatedKeyIndices) |
| 1134 | throws SQLException { |
| 1135 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
| 1136 | checkClosed(); |
| 1137 | |
| 1138 | synchronized (this.connection.getMutex()) { |
| 1139 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1140 | // the 'info' message returned from the server to determine |
| 1141 | // the actual number of keys generated. |
| 1142 | boolean readInfoMsgState = this.connection |
| 1143 | .isReadInfoMsgEnabled(); |
| 1144 | this.connection.setReadInfoMsgEnabled(true); |
| 1145 | |
| 1146 | try { |
| 1147 | return executeUpdate(sql); |
| 1148 | } finally { |
| 1149 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | return executeUpdate(sql); |
| 1155 | } |
| 1156 | |
| 1157 | /** |
| 1158 | * @see Statement#executeUpdate(String, String[]) |
| 1159 | */ |
| 1160 | public int executeUpdate(String sql, String[] generatedKeyNames) |
| 1161 | throws SQLException { |
| 1162 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
| 1163 | checkClosed(); |
| 1164 | |
| 1165 | synchronized (this.connection.getMutex()) { |
| 1166 | // If this is a 'REPLACE' query, we need to be able to parse |
| 1167 | // the 'info' message returned from the server to determine |
| 1168 | // the actual number of keys generated. |
| 1169 | boolean readInfoMsgState = this.connection |
| 1170 | .isReadInfoMsgEnabled(); |
| 1171 | this.connection.setReadInfoMsgEnabled(true); |
| 1172 | |
| 1173 | try { |
| 1174 | return executeUpdate(sql); |
| 1175 | } finally { |
| 1176 | this.connection.setReadInfoMsgEnabled(readInfoMsgState); |
| 1177 | } |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | return executeUpdate(sql); |
| 1182 | } |
| 1183 | |
| 1184 | /** |
| 1185 | * Required by JDBC spec |
| 1186 | */ |
| 1187 | /* |
| 1188 | protected void finalize() throws Throwable { |
| 1189 | if (!this.isClosed) { |
| 1190 | realClose(false); |
| 1191 | } |
| 1192 | } |
| 1193 | */ |
| 1194 | |
| 1195 | /** |
| 1196 | * Returns cached metadata (or null if not cached) for the given query, |
| 1197 | * which must match _exactly_. Note this method is guarded against |
| 1198 | * concurrent access via the synchronized{} block in execute() and |
| 1199 | * executeQuery(). |
| 1200 | * |
| 1201 | * @param sql |
| 1202 | * the query that is the key to the cache |
| 1203 | * |
| 1204 | * @return DOCUMENT ME! |
| 1205 | */ |
| 1206 | protected CachedResultSetMetaData getCachedMetaData(String sql) { |
| 1207 | if (this.resultSetMetadataCache != null) { |
| 1208 | return (CachedResultSetMetaData) this.resultSetMetadataCache |
| 1209 | .get(sql); |
| 1210 | } |
| 1211 | |
| 1212 | return null; // no cache exists (yet) |
| 1213 | } |
| 1214 | |
| 1215 | /** |
| 1216 | * JDBC 2.0 Return the Connection that produced the Statement. |
| 1217 | * |
| 1218 | * @return the Connection that produced the Statement |
| 1219 | * |
| 1220 | * @throws SQLException |
| 1221 | * if an error occurs |
| 1222 | */ |
| 1223 | public synchronized java.sql.Connection getConnection() throws SQLException { |
| 1224 | return this.connection; |
| 1225 | } |
| 1226 | |
| 1227 | /** |
| 1228 | * JDBC 2.0 Determine the fetch direction. |
| 1229 | * |
| 1230 | * @return the default fetch direction |
| 1231 | * |
| 1232 | * @exception SQLException |
| 1233 | * if a database-access error occurs |
| 1234 | */ |
| 1235 | public int getFetchDirection() throws SQLException { |
| 1236 | return java.sql.ResultSet.FETCH_FORWARD; |
| 1237 | } |
| 1238 | |
| 1239 | /** |
| 1240 | * JDBC 2.0 Determine the default fetch size. |
| 1241 | * |
| 1242 | * @return the number of rows to fetch at a time |
| 1243 | * |
| 1244 | * @throws SQLException |
| 1245 | * if an error occurs |
| 1246 | */ |
| 1247 | public synchronized int getFetchSize() throws SQLException { |
| 1248 | return this.fetchSize; |
| 1249 | } |
| 1250 | |
| 1251 | /** |
| 1252 | * DOCUMENT ME! |
| 1253 | * |
| 1254 | * @return DOCUMENT ME! |
| 1255 | * |
| 1256 | * @throws SQLException |
| 1257 | * DOCUMENT ME! |
| 1258 | */ |
| 1259 | public synchronized java.sql.ResultSet getGeneratedKeys() |
| 1260 | throws SQLException { |
| 1261 | if (this.batchedGeneratedKeys == null) { |
| 1262 | return getGeneratedKeysInternal(); |
| 1263 | } |
| 1264 | |
| 1265 | Field[] fields = new Field[1]; |
| 1266 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1267 | fields[0].setConnection(this.connection); |
| 1268 | |
| 1269 | return new com.mysql.jdbc.ResultSet(this.currentCatalog, fields, |
| 1270 | new RowDataStatic(this.batchedGeneratedKeys), this.connection, |
| 1271 | this); |
| 1272 | } |
| 1273 | |
| 1274 | /* |
| 1275 | * Needed because there's no concept of super.super to get to this |
| 1276 | * implementation from ServerPreparedStatement when dealing with batched |
| 1277 | * updates. |
| 1278 | */ |
| 1279 | protected synchronized java.sql.ResultSet getGeneratedKeysInternal() |
| 1280 | throws SQLException { |
| 1281 | Field[] fields = new Field[1]; |
| 1282 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1283 | fields[0].setConnection(this.connection); |
| 1284 | |
| 1285 | ArrayList rowSet = new ArrayList(); |
| 1286 | |
| 1287 | long beginAt = getLastInsertID(); |
| 1288 | int numKeys = getUpdateCount(); |
| 1289 | |
| 1290 | if (this.results != null) { |
| 1291 | String serverInfo = this.results.getServerInfo(); |
| 1292 | |
| 1293 | // |
| 1294 | // Only parse server info messages for 'REPLACE' |
| 1295 | // queries |
| 1296 | // |
| 1297 | if ((numKeys > 0) && (this.results.getFirstCharOfQuery() == 'R') |
| 1298 | && (serverInfo != null) && (serverInfo.length() > 0)) { |
| 1299 | numKeys = getRecordCountFromInfo(serverInfo); |
| 1300 | } |
| 1301 | |
| 1302 | if ((beginAt > 0) && (numKeys > 0)) { |
| 1303 | for (int i = 0; i < numKeys; i++) { |
| 1304 | byte[][] row = new byte[1][]; |
| 1305 | row[0] = Long.toString(beginAt++).getBytes(); |
| 1306 | rowSet.add(row); |
| 1307 | } |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | return new com.mysql.jdbc.ResultSet(this.currentCatalog, fields, |
| 1312 | new RowDataStatic(rowSet), this.connection, this); |
| 1313 | } |
| 1314 | |
| 1315 | /** |
| 1316 | * Returns the id used when profiling |
| 1317 | * |
| 1318 | * @return the id used when profiling. |
| 1319 | */ |
| 1320 | protected int getId() { |
| 1321 | return this.statementId; |
| 1322 | } |
| 1323 | |
| 1324 | /** |
| 1325 | * getLastInsertID returns the value of the auto_incremented key after an |
| 1326 | * executeQuery() or excute() call. |
| 1327 | * |
| 1328 | * <p> |
| 1329 | * This gets around the un-threadsafe behavior of "select LAST_INSERT_ID()" |
| 1330 | * which is tied to the Connection that created this Statement, and |
| 1331 | * therefore could have had many INSERTS performed before one gets a chance |
| 1332 | * to call "select LAST_INSERT_ID()". |
| 1333 | * </p> |
| 1334 | * |
| 1335 | * @return the last update ID. |
| 1336 | */ |
| 1337 | public synchronized long getLastInsertID() { |
| 1338 | return this.lastInsertId; |
| 1339 | } |
| 1340 | |
| 1341 | /** |
| 1342 | * getLongUpdateCount returns the current result as an update count, if the |
| 1343 | * result is a ResultSet or there are no more results, -1 is returned. It |
| 1344 | * should only be called once per result. |
| 1345 | * |
| 1346 | * <p> |
| 1347 | * This method returns longs as MySQL server versions newer than 3.22.4 |
| 1348 | * return 64-bit values for update counts |
| 1349 | * </p> |
| 1350 | * |
| 1351 | * @return the current update count. |
| 1352 | */ |
| 1353 | public synchronized long getLongUpdateCount() { |
| 1354 | if (this.results == null) { |
| 1355 | return -1; |
| 1356 | } |
| 1357 | |
| 1358 | if (this.results.reallyResult()) { |
| 1359 | return -1; |
| 1360 | } |
| 1361 | |
| 1362 | return this.updateCount; |
| 1363 | } |
| 1364 | |
| 1365 | /** |
| 1366 | * The maxFieldSize limit (in bytes) is the maximum amount of data returned |
| 1367 | * for any column value; it only applies to BINARY, VARBINARY, |
| 1368 | * LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR columns. If the limit is |
| 1369 | * exceeded, the excess data is silently discarded. |
| 1370 | * |
| 1371 | * @return the current max column size limit; zero means unlimited |
| 1372 | * |
| 1373 | * @exception SQLException |
| 1374 | * if a database access error occurs |
| 1375 | */ |
| 1376 | public synchronized int getMaxFieldSize() throws SQLException { |
| 1377 | return this.maxFieldSize; |
| 1378 | } |
| 1379 | |
| 1380 | /** |
| 1381 | * The maxRows limit is set to limit the number of rows that any ResultSet |
| 1382 | * can contain. If the limit is exceeded, the excess rows are silently |
| 1383 | * dropped. |
| 1384 | * |
| 1385 | * @return the current maximum row limit; zero means unlimited |
| 1386 | * |
| 1387 | * @exception SQLException |
| 1388 | * if a database access error occurs |
| 1389 | */ |
| 1390 | public synchronized int getMaxRows() throws SQLException { |
| 1391 | if (this.maxRows <= 0) { |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
| 1395 | return this.maxRows; |
| 1396 | } |
| 1397 | |
| 1398 | /** |
| 1399 | * getMoreResults moves to a Statement's next result. If it returns true, |
| 1400 | * this result is a ResulSet. |
| 1401 | * |
| 1402 | * @return true if the next ResultSet is valid |
| 1403 | * |
| 1404 | * @exception SQLException |
| 1405 | * if a database access error occurs |
| 1406 | */ |
| 1407 | public boolean getMoreResults() throws SQLException { |
| 1408 | return getMoreResults(CLOSE_CURRENT_RESULT); |
| 1409 | } |
| 1410 | |
| 1411 | /** |
| 1412 | * @see Statement#getMoreResults(int) |
| 1413 | */ |
| 1414 | public synchronized boolean getMoreResults(int current) throws SQLException { |
| 1415 | |
| 1416 | if (this.results == null) { |
| 1417 | return false; |
| 1418 | } |
| 1419 | |
| 1420 | ResultSet nextResultSet = this.results.getNextResultSet(); |
| 1421 | |
| 1422 | switch (current) { |
| 1423 | case java.sql.Statement.CLOSE_CURRENT_RESULT: |
| 1424 | |
| 1425 | if (this.results != null) { |
| 1426 | this.results.close(); |
| 1427 | this.results.clearNextResult(); |
| 1428 | } |
| 1429 | |
| 1430 | break; |
| 1431 | |
| 1432 | case java.sql.Statement.CLOSE_ALL_RESULTS: |
| 1433 | |
| 1434 | if (this.results != null) { |
| 1435 | this.results.close(); |
| 1436 | this.results.clearNextResult(); |
| 1437 | } |
| 1438 | |
| 1439 | closeAllOpenResults(); |
| 1440 | |
| 1441 | break; |
| 1442 | |
| 1443 | case java.sql.Statement.KEEP_CURRENT_RESULT: |
| 1444 | if (!this.connection.getDontTrackOpenResources()) { |
| 1445 | this.openResults.add(this.results); |
| 1446 | } |
| 1447 | |
| 1448 | this.results.clearNextResult(); // nobody besides us should |
| 1449 | // ever need this value... |
| 1450 | break; |
| 1451 | |
| 1452 | default: |
| 1453 | throw new SQLException(Messages.getString("Statement.19"), //$NON-NLS-1$ |
| 1454 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1455 | } |
| 1456 | |
| 1457 | this.results = nextResultSet; |
| 1458 | |
| 1459 | if (this.results == null) { |
| 1460 | this.updateCount = -1; |
| 1461 | this.lastInsertId = -1; |
| 1462 | } else if (this.results.reallyResult()) { |
| 1463 | this.updateCount = -1; |
| 1464 | this.lastInsertId = -1; |
| 1465 | } else { |
| 1466 | this.updateCount = this.results.getUpdateCount(); |
| 1467 | this.lastInsertId = this.results.getUpdateID(); |
| 1468 | } |
| 1469 | |
| 1470 | return ((this.results != null) && this.results.reallyResult()) ? true |
| 1471 | : false; |
| 1472 | } |
| 1473 | |
| 1474 | /** |
| 1475 | * The queryTimeout limit is the number of seconds the driver will wait for |
| 1476 | * a Statement to execute. If the limit is exceeded, a SQLException is |
| 1477 | * thrown. |
| 1478 | * |
| 1479 | * @return the current query timeout limit in seconds; 0 = unlimited |
| 1480 | * |
| 1481 | * @exception SQLException |
| 1482 | * if a database access error occurs |
| 1483 | */ |
| 1484 | public int getQueryTimeout() throws SQLException { |
| 1485 | return this.timeout; |
| 1486 | } |
| 1487 | |
| 1488 | /** |
| 1489 | * Parses actual record count from 'info' message |
| 1490 | * |
| 1491 | * @param serverInfo |
| 1492 | * DOCUMENT ME! |
| 1493 | * |
| 1494 | * @return DOCUMENT ME! |
| 1495 | */ |
| 1496 | private int getRecordCountFromInfo(String serverInfo) { |
| 1497 | StringBuffer recordsBuf = new StringBuffer(); |
| 1498 | int recordsCount = 0; |
| 1499 | int duplicatesCount = 0; |
| 1500 | |
| 1501 | char c = (char) 0; |
| 1502 | |
| 1503 | int length = serverInfo.length(); |
| 1504 | int i = 0; |
| 1505 | |
| 1506 | for (; i < length; i++) { |
| 1507 | c = serverInfo.charAt(i); |
| 1508 | |
| 1509 | if (Character.isDigit(c)) { |
| 1510 | break; |
| 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | recordsBuf.append(c); |
| 1515 | i++; |
| 1516 | |
| 1517 | for (; i < length; i++) { |
| 1518 | c = serverInfo.charAt(i); |
| 1519 | |
| 1520 | if (!Character.isDigit(c)) { |
| 1521 | break; |
| 1522 | } |
| 1523 | |
| 1524 | recordsBuf.append(c); |
| 1525 | } |
| 1526 | |
| 1527 | recordsCount = Integer.parseInt(recordsBuf.toString()); |
| 1528 | |
| 1529 | StringBuffer duplicatesBuf = new StringBuffer(); |
| 1530 | |
| 1531 | for (; i < length; i++) { |
| 1532 | c = serverInfo.charAt(i); |
| 1533 | |
| 1534 | if (Character.isDigit(c)) { |
| 1535 | break; |
| 1536 | } |
| 1537 | } |
| 1538 | |
| 1539 | duplicatesBuf.append(c); |
| 1540 | i++; |
| 1541 | |
| 1542 | for (; i < length; i++) { |
| 1543 | c = serverInfo.charAt(i); |
| 1544 | |
| 1545 | if (!Character.isDigit(c)) { |
| 1546 | break; |
| 1547 | } |
| 1548 | |
| 1549 | duplicatesBuf.append(c); |
| 1550 | } |
| 1551 | |
| 1552 | duplicatesCount = Integer.parseInt(duplicatesBuf.toString()); |
| 1553 | |
| 1554 | return recordsCount - duplicatesCount; |
| 1555 | } |
| 1556 | |
| 1557 | /** |
| 1558 | * getResultSet returns the current result as a ResultSet. It should only be |
| 1559 | * called once per result. |
| 1560 | * |
| 1561 | * @return the current result set; null if there are no more |
| 1562 | * |
| 1563 | * @exception SQLException |
| 1564 | * if a database access error occurs (why?) |
| 1565 | */ |
| 1566 | public synchronized java.sql.ResultSet getResultSet() throws SQLException { |
| 1567 | return ((this.results != null) && this.results.reallyResult()) ? (java.sql.ResultSet) this.results |
| 1568 | : null; |
| 1569 | } |
| 1570 | |
| 1571 | /** |
| 1572 | * JDBC 2.0 Determine the result set concurrency. |
| 1573 | * |
| 1574 | * @return CONCUR_UPDATABLE or CONCUR_READONLY |
| 1575 | * |
| 1576 | * @throws SQLException |
| 1577 | * if an error occurs |
| 1578 | */ |
| 1579 | public synchronized int getResultSetConcurrency() throws SQLException { |
| 1580 | return this.resultSetConcurrency; |
| 1581 | } |
| 1582 | |
| 1583 | /** |
| 1584 | * @see Statement#getResultSetHoldability() |
| 1585 | */ |
| 1586 | public int getResultSetHoldability() throws SQLException { |
| 1587 | return java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT; |
| 1588 | } |
| 1589 | |
| 1590 | /** |
| 1591 | * JDBC 2.0 Determine the result set type. |
| 1592 | * |
| 1593 | * @return the ResultSet type (SCROLL_SENSITIVE or SCROLL_INSENSITIVE) |
| 1594 | * |
| 1595 | * @throws SQLException |
| 1596 | * if an error occurs. |
| 1597 | */ |
| 1598 | public synchronized int getResultSetType() throws SQLException { |
| 1599 | return this.resultSetType; |
| 1600 | } |
| 1601 | |
| 1602 | /** |
| 1603 | * getUpdateCount returns the current result as an update count, if the |
| 1604 | * result is a ResultSet or there are no more results, -1 is returned. It |
| 1605 | * should only be called once per result. |
| 1606 | * |
| 1607 | * @return the current result as an update count. |
| 1608 | * |
| 1609 | * @exception SQLException |
| 1610 | * if a database access error occurs |
| 1611 | */ |
| 1612 | public synchronized int getUpdateCount() throws SQLException { |
| 1613 | if (this.results == null) { |
| 1614 | return -1; |
| 1615 | } |
| 1616 | |
| 1617 | if (this.results.reallyResult()) { |
| 1618 | return -1; |
| 1619 | } |
| 1620 | |
| 1621 | int truncatedUpdateCount = 0; |
| 1622 | |
| 1623 | if (this.results.getUpdateCount() > Integer.MAX_VALUE) { |
| 1624 | truncatedUpdateCount = Integer.MAX_VALUE; |
| 1625 | } else { |
| 1626 | truncatedUpdateCount = (int) this.results.getUpdateCount(); |
| 1627 | } |
| 1628 | |
| 1629 | return truncatedUpdateCount; |
| 1630 | } |
| 1631 | |
| 1632 | /** |
| 1633 | * The first warning reported by calls on this Statement is returned. A |
| 1634 | * Statement's execute methods clear its java.sql.SQLWarning chain. |
| 1635 | * Subsequent Statement warnings will be chained to this |
| 1636 | * java.sql.SQLWarning. |
| 1637 | * |
| 1638 | * <p> |
| 1639 | * The Warning chain is automatically cleared each time a statement is |
| 1640 | * (re)executed. |
| 1641 | * </p> |
| 1642 | * |
| 1643 | * <p> |
| 1644 | * <B>Note:</B> If you are processing a ResultSet then any warnings |
| 1645 | * associated with ResultSet reads will be chained on the ResultSet object. |
| 1646 | * </p> |
| 1647 | * |
| 1648 | * @return the first java.sql.SQLWarning or null |
| 1649 | * |
| 1650 | * @exception SQLException |
| 1651 | * if a database access error occurs |
| 1652 | */ |
| 1653 | public synchronized java.sql.SQLWarning getWarnings() throws SQLException { |
| 1654 | checkClosed(); |
| 1655 | |
| 1656 | if (this.connection.versionMeetsMinimum(4, 1, 0)) { |
| 1657 | SQLWarning pendingWarningsFromServer = SQLError |
| 1658 | .convertShowWarningsToSQLWarnings(this.connection); |
| 1659 | |
| 1660 | if (this.warningChain != null) { |
| 1661 | this.warningChain.setNextWarning(pendingWarningsFromServer); |
| 1662 | } else { |
| 1663 | this.warningChain = pendingWarningsFromServer; |
| 1664 | } |
| 1665 | |
| 1666 | return this.warningChain; |
| 1667 | } |
| 1668 | |
| 1669 | return this.warningChain; |
| 1670 | } |
| 1671 | |
| 1672 | /** |
| 1673 | * Caches CachedResultSetMetaData that has been placed in the cache using |
| 1674 | * the given SQL as a key. |
| 1675 | * |
| 1676 | * @param sql |
| 1677 | * DOCUMENT ME! |
| 1678 | * @param cachedMetaData |
| 1679 | * DOCUMENT ME! |
| 1680 | * @param resultSet |
| 1681 | * DOCUMENT ME! |
| 1682 | * |
| 1683 | * @throws SQLException |
| 1684 | * DOCUMENT ME! |
| 1685 | */ |
| 1686 | protected void initializeResultsMetadataFromCache(String sql, |
| 1687 | CachedResultSetMetaData cachedMetaData, ResultSet resultSet) |
| 1688 | throws SQLException { |
| 1689 | synchronized (resultSet) { |
| 1690 | if (cachedMetaData == null) { |
| 1691 | // read from results |
| 1692 | cachedMetaData = new CachedResultSetMetaData(); |
| 1693 | cachedMetaData.fields = this.results.fields; |
| 1694 | |
| 1695 | // assume that users will use named-based |
| 1696 | // lookups |
| 1697 | resultSet.buildIndexMapping(); |
| 1698 | |
| 1699 | cachedMetaData.columnNameToIndex = resultSet.columnNameToIndex; |
| 1700 | cachedMetaData.fullColumnNameToIndex = resultSet.fullColumnNameToIndex; |
| 1701 | |
| 1702 | cachedMetaData.metadata = resultSet.getMetaData(); |
| 1703 | |
| 1704 | if (this.resultSetMetadataCache == null) { |
| 1705 | this.resultSetMetadataCache = new LRUCache(this.connection |
| 1706 | .getMetadataCacheSize()); |
| 1707 | } |
| 1708 | |
| 1709 | this.resultSetMetadataCache.put(sql, cachedMetaData); |
| 1710 | } else { |
| 1711 | // initialize results from cached data |
| 1712 | resultSet.fields = cachedMetaData.fields; |
| 1713 | resultSet.columnNameToIndex = cachedMetaData.columnNameToIndex; |
| 1714 | resultSet.fullColumnNameToIndex = cachedMetaData.fullColumnNameToIndex; |
| 1715 | resultSet.hasBuiltIndexMapping = true; |
| 1716 | |
| 1717 | // results.resultSetMetaData = cachedMetaData.metadata; |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | /** |
| 1723 | * Closes this statement, and frees resources. |
| 1724 | * |
| 1725 | * @param calledExplicitly |
| 1726 | * was this called from close()? |
| 1727 | * |
| 1728 | * @throws SQLException |
| 1729 | * if an error occurs |
| 1730 | */ |
| 1731 | protected synchronized void realClose(boolean calledExplicitly) throws SQLException { |
| 1732 | if (this.isClosed) { |
| 1733 | return; |
| 1734 | } |
| 1735 | |
| 1736 | if (this.useUsageAdvisor) { |
| 1737 | if (!calledExplicitly) { |
| 1738 | String message = Messages.getString("Statement.63") //$NON-NLS-1$ |
| 1739 | + Messages.getString("Statement.64"); //$NON-NLS-1$ |
| 1740 | |
| 1741 | this.eventSink.consumeEvent(new ProfilerEvent( |
| 1742 | ProfilerEvent.TYPE_WARN, "", //$NON-NLS-1$ |
| 1743 | this.currentCatalog, this.connection.getId(), this |
| 1744 | .getId(), -1, System.currentTimeMillis(), 0, |
| 1745 | null, this.pointOfOrigin, message)); |
| 1746 | } |
| 1747 | } |
| 1748 | |
| 1749 | if (this.connection != null) { |
| 1750 | synchronized (this.connection) { |
| 1751 | if (this.results != null) { |
| 1752 | if (!this.connection.getHoldResultsOpenOverStatementClose()) { |
| 1753 | try { |
| 1754 | this.results.close(); |
| 1755 | } catch (Exception ex) { |
| 1756 | ; |
| 1757 | } |
| 1758 | } |
| 1759 | } |
| 1760 | |
| 1761 | if (this.maxRowsChanged) { |
| 1762 | this.connection.unsetMaxRows(this); |
| 1763 | } |
| 1764 | |
| 1765 | if (!this.connection.getDontTrackOpenResources()) { |
| 1766 | this.connection.unregisterStatement(this); |
| 1767 | } |
| 1768 | } |
| 1769 | } |
| 1770 | |
| 1771 | this.closeAllOpenResults(); |
| 1772 | |
| 1773 | this.results = null; |
| 1774 | this.connection = null; |
| 1775 | this.warningChain = null; |
| 1776 | this.openResults = null; |
| 1777 | this.batchedGeneratedKeys = null; |
| 1778 | this.isClosed = true; |
| 1779 | } |
| 1780 | |
| 1781 | /** |
| 1782 | * setCursorName defines the SQL cursor name that will be used by subsequent |
| 1783 | * execute methods. This name can then be used in SQL positioned |
| 1784 | * update/delete statements to identify the current row in the ResultSet |
| 1785 | * generated by this statement. If a database doesn't support positioned |
| 1786 | * update/delete, this method is a no-op. |
| 1787 | * |
| 1788 | * <p> |
| 1789 | * <b>Note:</b> This MySQL driver does not support cursors. |
| 1790 | * </p> |
| 1791 | * |
| 1792 | * @param name |
| 1793 | * the new cursor name |
| 1794 | * |
| 1795 | * @exception SQLException |
| 1796 | * if a database access error occurs |
| 1797 | */ |
| 1798 | public void setCursorName(String name) throws SQLException { |
| 1799 | // No-op |
| 1800 | } |
| 1801 | |
| 1802 | /** |
| 1803 | * If escape scanning is on (the default), the driver will do escape |
| 1804 | * substitution before sending the SQL to the database. |
| 1805 | * |
| 1806 | * @param enable |
| 1807 | * true to enable; false to disable |
| 1808 | * |
| 1809 | * @exception SQLException |
| 1810 | * if a database access error occurs |
| 1811 | */ |
| 1812 | public synchronized void setEscapeProcessing(boolean enable) |
| 1813 | throws SQLException { |
| 1814 | this.doEscapeProcessing = enable; |
| 1815 | } |
| 1816 | |
| 1817 | /** |
| 1818 | * JDBC 2.0 Give a hint as to the direction in which the rows in a result |
| 1819 | * set will be processed. The hint applies only to result sets created using |
| 1820 | * this Statement object. The default value is ResultSet.FETCH_FORWARD. |
| 1821 | * |
| 1822 | * @param direction |
| 1823 | * the initial direction for processing rows |
| 1824 | * |
| 1825 | * @exception SQLException |
| 1826 | * if a database-access error occurs or direction is not one |
| 1827 | * of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or |
| 1828 | * ResultSet.FETCH_UNKNOWN |
| 1829 | */ |
| 1830 | public void setFetchDirection(int direction) throws SQLException { |
| 1831 | switch (direction) { |
| 1832 | case java.sql.ResultSet.FETCH_FORWARD: |
| 1833 | case java.sql.ResultSet.FETCH_REVERSE: |
| 1834 | case java.sql.ResultSet.FETCH_UNKNOWN: |
| 1835 | break; |
| 1836 | |
| 1837 | default: |
| 1838 | throw new SQLException(Messages.getString("Statement.5"), //$NON-NLS-1$ |
| 1839 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | /** |
| 1844 | * JDBC 2.0 Give the JDBC driver a hint as to the number of rows that should |
| 1845 | * be fetched from the database when more rows are needed. The number of |
| 1846 | * rows specified only affects result sets created using this statement. If |
| 1847 | * the value specified is zero, then the hint is ignored. The default value |
| 1848 | * is zero. |
| 1849 | * |
| 1850 | * @param rows |
| 1851 | * the number of rows to fetch |
| 1852 | * |
| 1853 | * @exception SQLException |
| 1854 | * if a database-access error occurs, or the condition 0 |
| 1855 | * <= rows <= this.getMaxRows() is not satisfied. |
| 1856 | */ |
| 1857 | public synchronized void setFetchSize(int rows) throws SQLException { |
| 1858 | if (((rows < 0) && (rows != Integer.MIN_VALUE)) |
| 1859 | || ((this.maxRows != 0) && (this.maxRows != -1) && (rows > this |
| 1860 | .getMaxRows()))) { |
| 1861 | throw new SQLException(Messages.getString("Statement.7"), //$NON-NLS-1$ |
| 1862 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1863 | } |
| 1864 | |
| 1865 | this.fetchSize = rows; |
| 1866 | } |
| 1867 | |
| 1868 | /** |
| 1869 | * Sets the maxFieldSize |
| 1870 | * |
| 1871 | * @param max |
| 1872 | * the new max column size limit; zero means unlimited |
| 1873 | * |
| 1874 | * @exception SQLException |
| 1875 | * if size exceeds buffer size |
| 1876 | */ |
| 1877 | public synchronized void setMaxFieldSize(int max) throws SQLException { |
| 1878 | if (max < 0) { |
| 1879 | throw new SQLException(Messages.getString("Statement.11"), //$NON-NLS-1$ |
| 1880 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1881 | } |
| 1882 | |
| 1883 | int maxBuf = (this.connection != null) ? this.connection |
| 1884 | .getMaxAllowedPacket() : MysqlIO.getMaxBuf(); |
| 1885 | |
| 1886 | if (max > maxBuf) { |
| 1887 | throw new SQLException(Messages.getString("Statement.13", //$NON-NLS-1$ |
| 1888 | new Object[] { new Long(maxBuf) }), //$NON-NLS-1$ |
| 1889 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1890 | } |
| 1891 | |
| 1892 | this.maxFieldSize = max; |
| 1893 | } |
| 1894 | |
| 1895 | /** |
| 1896 | * Set the maximum number of rows |
| 1897 | * |
| 1898 | * @param max |
| 1899 | * the new max rows limit; zero means unlimited |
| 1900 | * |
| 1901 | * @exception SQLException |
| 1902 | * if a database access error occurs |
| 1903 | * |
| 1904 | * @see getMaxRows |
| 1905 | */ |
| 1906 | public synchronized void setMaxRows(int max) throws SQLException { |
| 1907 | if ((max > MysqlDefs.MAX_ROWS) || (max < 0)) { |
| 1908 | throw new SQLException( |
| 1909 | Messages.getString("Statement.15") + max //$NON-NLS-1$ |
| 1910 | + " > " //$NON-NLS-1$ //$NON-NLS-2$ |
| 1911 | + MysqlDefs.MAX_ROWS + ".", SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ //$NON-NLS-2$ |
| 1912 | } |
| 1913 | |
| 1914 | if (max == 0) { |
| 1915 | max = -1; |
| 1916 | } |
| 1917 | |
| 1918 | this.maxRows = max; |
| 1919 | this.maxRowsChanged = true; |
| 1920 | |
| 1921 | if (this.maxRows == -1) { |
| 1922 | this.connection.unsetMaxRows(this); |
| 1923 | this.maxRowsChanged = false; |
| 1924 | } else { |
| 1925 | // Most people don't use setMaxRows() |
| 1926 | // so don't penalize them |
| 1927 | // with the extra query it takes |
| 1928 | // to do it efficiently unless we need |
| 1929 | // to. |
| 1930 | this.connection.maxRowsChanged(this); |
| 1931 | } |
| 1932 | } |
| 1933 | |
| 1934 | /** |
| 1935 | * Sets the queryTimeout limit |
| 1936 | * |
| 1937 | * @param seconds - |
| 1938 | * the new query timeout limit in seconds |
| 1939 | * |
| 1940 | * @exception SQLException |
| 1941 | * if a database access error occurs |
| 1942 | */ |
| 1943 | public void setQueryTimeout(int seconds) throws SQLException { |
| 1944 | if (seconds < 0) { |
| 1945 | throw new SQLException(Messages.getString("Statement.21"), //$NON-NLS-1$ |
| 1946 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 1947 | } |
| 1948 | |
| 1949 | this.timeout = seconds; |
| 1950 | } |
| 1951 | |
| 1952 | /** |
| 1953 | * Sets the concurrency for result sets generated by this statement |
| 1954 | * |
| 1955 | * @param concurrencyFlag |
| 1956 | * DOCUMENT ME! |
| 1957 | */ |
| 1958 | synchronized void setResultSetConcurrency(int concurrencyFlag) { |
| 1959 | this.resultSetConcurrency = concurrencyFlag; |
| 1960 | } |
| 1961 | |
| 1962 | /** |
| 1963 | * Sets the result set type for result sets generated by this statement |
| 1964 | * |
| 1965 | * @param typeFlag |
| 1966 | * DOCUMENT ME! |
| 1967 | */ |
| 1968 | synchronized void setResultSetType(int typeFlag) { |
| 1969 | this.resultSetType = typeFlag; |
| 1970 | } |
| 1971 | |
| 1972 | protected void getBatchedGeneratedKeys(java.sql.Statement batchedStatement) throws SQLException { |
| 1973 | if (this.retrieveGeneratedKeys) { |
| 1974 | java.sql.ResultSet rs = null; |
| 1975 | |
| 1976 | try { |
| 1977 | rs = batchedStatement.getGeneratedKeys(); |
| 1978 | |
| 1979 | while (rs.next()) { |
| 1980 | this.batchedGeneratedKeys |
| 1981 | .add(new byte[][] { rs.getBytes(1) }); |
| 1982 | } |
| 1983 | } finally { |
| 1984 | if (rs != null) { |
| 1985 | rs.close(); |
| 1986 | } |
| 1987 | } |
| 1988 | } |
| 1989 | } |
| 1990 | |
| 1991 | protected void getBatchedGeneratedKeys() throws SQLException { |
| 1992 | if (this.retrieveGeneratedKeys) { |
| 1993 | java.sql.ResultSet rs = null; |
| 1994 | |
| 1995 | try { |
| 1996 | rs = getGeneratedKeysInternal(); |
| 1997 | |
| 1998 | while (rs.next()) { |
| 1999 | this.batchedGeneratedKeys |
| 2000 | .add(new byte[][] { rs.getBytes(1) }); |
| 2001 | } |
| 2002 | } finally { |
| 2003 | if (rs != null) { |
| 2004 | rs.close(); |
| 2005 | } |
| 2006 | } |
| 2007 | } |
| 2008 | } |
| 2009 | |
| 2010 | } |