| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.client.net.NetStatementRequest |
| 4 | |
| 5 | Copyright (c) 2001, 2005 The Apache Software Foundation or its licensors, where applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | package org.apache.derby.client.net; |
| 21 | |
| 22 | import org.apache.derby.iapi.reference.DRDAConstants; |
| 23 | import org.apache.derby.client.am.Blob; |
| 24 | import org.apache.derby.client.am.Clob; |
| 25 | import org.apache.derby.client.am.ColumnMetaData; |
| 26 | import org.apache.derby.client.am.ResultSet; |
| 27 | import org.apache.derby.client.am.Section; |
| 28 | import org.apache.derby.client.am.SqlException; |
| 29 | import org.apache.derby.client.am.Types; |
| 30 | import org.apache.derby.client.am.ClientMessageId; |
| 31 | import org.apache.derby.shared.common.reference.SQLState; |
| 32 | |
| 33 | // For performance, should we worry about the ordering of our DDM command parameters |
| 34 | |
| 35 | public class NetStatementRequest extends NetPackageRequest implements StatementRequestInterface { |
| 36 | java.util.ArrayList extdtaPositions_ = null; // Integers: build EXTDTA for column i |
| 37 | int overrideLid_ = FdocaConstants.FIRST_OVERRIDE_LID; |
| 38 | |
| 39 | // promototed parameters hold parameters that are promotoed to a different |
| 40 | // data type because they are too large to represent in PROTOCOL otherwise. |
| 41 | // This currently only applies for promotion of (VAR)CHAR -> CLOB and (VAR)BINARY -> BLOB |
| 42 | // The key for this structure is the parameter index. Note that having this |
| 43 | // collection does not eliminate the need for extdtaPositions_ because that |
| 44 | // is still needed for non-promototed LOBs |
| 45 | java.util.HashMap promototedParameters_ = new java.util.HashMap(); |
| 46 | |
| 47 | NetStatementRequest(NetAgent netAgent, CcsidManager ccsidManager, int bufferSize) { |
| 48 | super(netAgent, ccsidManager, bufferSize); |
| 49 | } |
| 50 | |
| 51 | //----------------------------- entry points --------------------------------- |
| 52 | |
| 53 | // Write the message to perform an execute immediate. |
| 54 | // The SQL statement sent as command data cannot contain references |
| 55 | // to either input variables or output variables. |
| 56 | // |
| 57 | // preconditions: |
| 58 | public void writeExecuteImmediate(NetStatement materialStatement, |
| 59 | String sql, |
| 60 | Section section) throws SqlException { |
| 61 | buildEXCSQLIMM(section, |
| 62 | false, //sendQryinsid |
| 63 | 0); //qryinsid |
| 64 | buildSQLSTTcommandData(sql); // statement follows in sqlstt command data object |
| 65 | } |
| 66 | |
| 67 | // Write the message to preform a prepare into. |
| 68 | // Once the SQL statement has been prepared, it is executed until the unit of work, in |
| 69 | // which the PRPSQLSTT command was issued, ends. An exception to this is if |
| 70 | // Keep Dynamic is being used. |
| 71 | // |
| 72 | // preconditions: |
| 73 | public void writePrepareDescribeOutput(NetStatement materialStatement, |
| 74 | String sql, |
| 75 | Section section) throws SqlException { |
| 76 | buildPRPSQLSTT(section, |
| 77 | sql, |
| 78 | true, //sendRtnsqlda |
| 79 | true, //sendTypsqlda |
| 80 | CodePoint.TYPSQLDA_X_OUTPUT); //typsqlda |
| 81 | |
| 82 | if (((NetStatement) materialStatement).statement_.cursorAttributesToSendOnPrepare_ != null) { |
| 83 | buildSQLATTRcommandData(((NetStatement) materialStatement).statement_.cursorAttributesToSendOnPrepare_); |
| 84 | } |
| 85 | |
| 86 | buildSQLSTTcommandData(sql); // statement follows in sqlstt command data object |
| 87 | } |
| 88 | |
| 89 | // Write the message to perform a reprepare. |
| 90 | // |
| 91 | // preconditions: |
| 92 | public void writePrepare(NetStatement materialStatement, |
| 93 | String sql, |
| 94 | Section section) throws SqlException { |
| 95 | buildPRPSQLSTT(section, |
| 96 | sql, |
| 97 | false, //sendRtnsqlda |
| 98 | false, //sendTypsqlda |
| 99 | 0); //typsqlda |
| 100 | |
| 101 | if (((NetStatement) materialStatement).statement_.cursorAttributesToSendOnPrepare_ != null) { |
| 102 | buildSQLATTRcommandData(((NetStatement) materialStatement).statement_.cursorAttributesToSendOnPrepare_); |
| 103 | } |
| 104 | |
| 105 | buildSQLSTTcommandData(sql); // statement follows in sqlstt command data object |
| 106 | } |
| 107 | |
| 108 | // Write the message to execute prepared sql statement. |
| 109 | // |
| 110 | // preconditions: |
| 111 | public void writeExecute(NetPreparedStatement materialPreparedStatement, |
| 112 | Section section, |
| 113 | ColumnMetaData parameterMetaData, |
| 114 | Object[] inputs, |
| 115 | int numInputColumns, |
| 116 | boolean outputExpected, |
| 117 | boolean chained) throws SqlException // chained flag for blobs only //dupqry |
| 118 | { |
| 119 | buildEXCSQLSTT(section, |
| 120 | true, // sendOutexp |
| 121 | outputExpected, // outexp |
| 122 | false, // sendPrcnam |
| 123 | null, // prcnam |
| 124 | false, // sendQryblksz |
| 125 | false, // sendMaxrslcnt, |
| 126 | 0, // maxrslcnt, |
| 127 | false, // sendMaxblkext |
| 128 | 0, // maxblkext |
| 129 | false, // sendRslsetflg |
| 130 | 0, // resultSetFlag |
| 131 | false, // sendQryrowset |
| 132 | 0); // qryrowset |
| 133 | |
| 134 | if (numInputColumns > 0) { |
| 135 | if ((extdtaPositions_ != null) && (!extdtaPositions_.isEmpty())) { |
| 136 | extdtaPositions_.clear(); // reset extdta column position markers |
| 137 | } |
| 138 | |
| 139 | boolean overrideExists = buildSQLDTAcommandData(numInputColumns, |
| 140 | parameterMetaData, |
| 141 | inputs); |
| 142 | |
| 143 | // can we eleminate the chain argument needed for lobs |
| 144 | buildEXTDTA(parameterMetaData, inputs, chained); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | |
| 149 | // Write the message to open a bound or prepared query with input parameters. |
| 150 | // Check this -> For open query with input parameters |
| 151 | // |
| 152 | // preconditions: |
| 153 | public void writeOpenQuery(NetPreparedStatement materialPreparedStatement, |
| 154 | Section section, |
| 155 | int fetchSize, |
| 156 | int resultSetType, |
| 157 | int numInputColumns, |
| 158 | org.apache.derby.client.am.ColumnMetaData parameterMetaData, |
| 159 | Object[] inputs) throws SqlException { |
| 160 | boolean sendQryrowset = checkSendQryrowset(fetchSize, resultSetType); |
| 161 | fetchSize = checkFetchsize(fetchSize, resultSetType); |
| 162 | // think about if there is a way we can call build ddm just passing ddm parameters and not passing the material ps object |
| 163 | // maybe not, if sometimes we need to set the caches hanging off the ps object during the ddm build |
| 164 | // maybe we can extricate conditionals in the build ddm logic outside |
| 165 | |
| 166 | buildOPNQRY(section, |
| 167 | sendQryrowset, |
| 168 | fetchSize); |
| 169 | |
| 170 | |
| 171 | // may be able to merge this with firstContinueQuery_ and push above conditional to common |
| 172 | ((NetStatement) materialPreparedStatement).qryrowsetSentOnOpnqry_ = sendQryrowset; |
| 173 | |
| 174 | if (numInputColumns > 0) { |
| 175 | if ((extdtaPositions_ != null) && (!extdtaPositions_.isEmpty())) { |
| 176 | extdtaPositions_.clear(); // reset extdta column position markers |
| 177 | } |
| 178 | // is this the best place for this |
| 179 | // EXCSQSTT needs this too |
| 180 | |
| 181 | // think about having this method return a boolean to |
| 182 | // indicate the extdta should be built |
| 183 | boolean overrideExists = buildSQLDTAcommandData(numInputColumns, |
| 184 | parameterMetaData, |
| 185 | inputs); |
| 186 | |
| 187 | // can we eleminate the chain argument needed for lobs |
| 188 | // do we chain after Extdta's on open, verify this |
| 189 | buildEXTDTA(parameterMetaData, |
| 190 | inputs, |
| 191 | false); //chained, do we chain after Extdta's on open |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | // Write the message to open a bound or prepared query without input parameters. |
| 196 | // Check this-> For open query without input parameters |
| 197 | public void writeOpenQuery(NetStatement materialStatement, |
| 198 | Section section, |
| 199 | int fetchSize, |
| 200 | int resultSetType) throws SqlException { |
| 201 | boolean sendQryrowset = checkSendQryrowset(fetchSize, resultSetType); |
| 202 | fetchSize = checkFetchsize(fetchSize, resultSetType); |
| 203 | |
| 204 | // think about if there is a way we can call build ddm just passing ddm parameters and not passing the material ps object |
| 205 | // maybe not, if sometimes we need to set the caches hanging off the ps object during the ddm build |
| 206 | // maybe we can extricate conditionals in the build ddm logic outside |
| 207 | buildOPNQRY(section, |
| 208 | sendQryrowset, |
| 209 | fetchSize); |
| 210 | |
| 211 | |
| 212 | // may be able to merge this with firstContinueQuery_ and push above conditional to common |
| 213 | ((NetStatement) materialStatement).qryrowsetSentOnOpnqry_ = sendQryrowset; // net-specific event |
| 214 | |
| 215 | |
| 216 | } |
| 217 | |
| 218 | // Write the message to peform a describe input. |
| 219 | // |
| 220 | |
| 221 | public void writeDescribeInput(NetPreparedStatement materialPreparedStatement, |
| 222 | Section section) throws SqlException { |
| 223 | int typsqlda = CodePoint.TYPSQLDA_X_INPUT; |
| 224 | |
| 225 | buildDSCSQLSTT(section, |
| 226 | true, //sendTypsqlda |
| 227 | typsqlda); |
| 228 | } |
| 229 | |
| 230 | // Write the message to peform a describe output. |
| 231 | // |
| 232 | // preconditions: |
| 233 | public void writeDescribeOutput(NetPreparedStatement materialPreparedStatement, |
| 234 | Section section) throws SqlException { |
| 235 | // pick standard, light, extended sqlda. possibly push this up even more |
| 236 | // right now use SQLAM level as determining factor and go for the most data. |
| 237 | // if standard is the only suported option, don't send the typsqlda |
| 238 | // and let server default to standard. This prevents accidentally sending |
| 239 | // a typsqlda to a downlevel server. typsqlda is only supported at sqlam 6. |
| 240 | //KATHEY CHECK |
| 241 | buildDSCSQLSTT(section, |
| 242 | true, //sendTypsqlda |
| 243 | CodePoint.TYPSQLDA_X_OUTPUT); //typsqlda |
| 244 | } |
| 245 | |
| 246 | // Write the message to execute a stored procedure. |
| 247 | // |
| 248 | // preconditions: |
| 249 | public void writeExecuteCall(NetStatement materialStatement, |
| 250 | boolean outputExpected, |
| 251 | String procedureName, |
| 252 | Section section, |
| 253 | int fetchSize, |
| 254 | boolean suppressResultSets, // for batch updates == true |
| 255 | int resultSetType, |
| 256 | ColumnMetaData parameterMetaData, |
| 257 | Object[] inputs) throws SqlException // chain is for blobs |
| 258 | { |
| 259 | // always send QRYROWSET on EXCSQLSTT |
| 260 | boolean sendQryrowset = true; |
| 261 | fetchSize = (fetchSize == 0) ? org.apache.derby.client.am.Configuration.defaultFetchSize : fetchSize; |
| 262 | |
| 263 | boolean sendPrcnam = (procedureName != null) ? true : false; |
| 264 | int numParameters = (parameterMetaData != null) ? parameterMetaData.columns_ : 0; |
| 265 | outputExpected = numParameters > 0; |
| 266 | |
| 267 | // is it right here to send maxblkext (-1) |
| 268 | buildEXCSQLSTT(section, |
| 269 | true, // sendOutexp |
| 270 | outputExpected, // outexp |
| 271 | sendPrcnam, // sendPrcnam |
| 272 | procedureName, // prcnam |
| 273 | true, // sendQryblksz |
| 274 | !suppressResultSets, // sendMaxrslcnt, |
| 275 | CodePoint.MAXRSLCNT_NOLIMIT, // maxrslcnt, |
| 276 | true, // sendMaxblkext |
| 277 | -1, // maxblkext (-1 for AR capable of receiving entire result set) |
| 278 | true, // sendRslsetflg |
| 279 | calculateResultSetFlags(), // resultSetFlag |
| 280 | sendQryrowset, // sendQryrowset |
| 281 | fetchSize); // qryrowset |
| 282 | |
| 283 | if (numParameters > 0) { |
| 284 | if ((extdtaPositions_ != null) && (!extdtaPositions_.isEmpty())) { |
| 285 | extdtaPositions_.clear(); // reset extdta column position markers |
| 286 | } |
| 287 | // is this the best place for this (OPNQRY needs this too) |
| 288 | |
| 289 | // think about having this method return a boolean to |
| 290 | // indicate the extdta should be built |
| 291 | boolean overrideExists = buildSQLDTAcommandData(numParameters, |
| 292 | parameterMetaData, |
| 293 | inputs); |
| 294 | |
| 295 | buildEXTDTA(parameterMetaData, inputs, false); // no chained autocommit for CALLs |
| 296 | } |
| 297 | |
| 298 | ((NetStatement) materialStatement).qryrowsetSentOnOpnqry_ = sendQryrowset; |
| 299 | } |
| 300 | |
| 301 | // Write the message to execute an SQL Set Statement. |
| 302 | /* |
| 303 | public void writeSetGenericSQLSetInfo (org.apache.derby.client.am.SetGenericSQLSetPiggybackCommand setGenericSQLSetPiggybackCommand, |
| 304 | org.apache.derby.client.am.JDBCSection section) throws SqlException |
| 305 | { |
| 306 | buildEXCSQLSET (section); |
| 307 | |
| 308 | java.util.List sqlsttList = setGenericSQLSetPiggybackCommand.getList(); |
| 309 | for (int i = 0; i < sqlsttList.size(); i++) { |
| 310 | String sql = (String)sqlsttList.get(i); |
| 311 | // Build SQLSTT only for the SET statement that coming from the server after RLSCONV |
| 312 | buildSQLSTTcommandData (sql); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | */ |
| 317 | //----------------------helper methods---------------------------------------- |
| 318 | // These methods are "private protected", which is not a recognized java privilege, |
| 319 | // but means that these methods are private to this class and to subclasses, |
| 320 | // and should not be used as package-wide friendly methods. |
| 321 | |
| 322 | // Build the Open Query Command to open a query to a relational database. |
| 323 | // At SQLAM >= 7 we can request the return of a DA, are there |
| 324 | // scenarios where this should currently be done (it is not supported now) |
| 325 | // |
| 326 | // preconditions: |
| 327 | // the sqlam and/or prdid must support command and parameters passed to this method, |
| 328 | // method will not validate against the connection's level of support |
| 329 | // |
| 330 | void buildOPNQRY(Section section, |
| 331 | boolean sendQueryRowSet, |
| 332 | int fetchSize) throws SqlException { |
| 333 | createCommand(); |
| 334 | markLengthBytes(CodePoint.OPNQRY); |
| 335 | |
| 336 | buildPKGNAMCSN(section); |
| 337 | buildQRYBLKSZ(); // specify a hard coded query block size |
| 338 | |
| 339 | if (sendQueryRowSet) { |
| 340 | buildMAXBLKEXT(-1); |
| 341 | buildQRYROWSET(fetchSize); |
| 342 | } |
| 343 | |
| 344 | // Tell the server to close forward-only result sets |
| 345 | // implicitly when they are exhausted. The server will ignore |
| 346 | // this parameter if the result set is scrollable. |
| 347 | if (netAgent_.netConnection_.serverSupportsQryclsimp()) { |
| 348 | buildQRYCLSIMP(); |
| 349 | } |
| 350 | |
| 351 | updateLengthBytes(); // opnqry is complete |
| 352 | } |
| 353 | |
| 354 | // Build the Execute Immediate SQL Statement Command to |
| 355 | // execute a non-cursor SQL statement sent as command data. |
| 356 | // |
| 357 | // precondtions: |
| 358 | void buildEXCSQLIMM(Section section, |
| 359 | boolean sendQryinsid, |
| 360 | long qryinsid) throws SqlException { |
| 361 | createCommand(); |
| 362 | markLengthBytes(CodePoint.EXCSQLIMM); |
| 363 | |
| 364 | buildPKGNAMCSN(section); |
| 365 | buildRDBCMTOK(); |
| 366 | if (sendQryinsid) { |
| 367 | buildQRYINSID(qryinsid); |
| 368 | } |
| 369 | |
| 370 | updateLengthBytes(); |
| 371 | } |
| 372 | |
| 373 | // Build the Prepare SQL Statement Command to dynamically binds an |
| 374 | // SQL statement to a section in an existing relational database (RDB) package. |
| 375 | // |
| 376 | // preconditions: |
| 377 | // the sqlam and/or prdid must support command and parameters passed to this method, |
| 378 | // method will not validate against the connection's level of support |
| 379 | void buildPRPSQLSTT(Section section, |
| 380 | String sql, |
| 381 | boolean sendRtnsqlda, |
| 382 | boolean sendTypsqlda, |
| 383 | int typsqlda) throws SqlException { |
| 384 | createCommand(); |
| 385 | markLengthBytes(CodePoint.PRPSQLSTT); |
| 386 | |
| 387 | buildPKGNAMCSN(section); |
| 388 | if (sendRtnsqlda) { |
| 389 | buildRTNSQLDA(); |
| 390 | } |
| 391 | if (sendTypsqlda) { |
| 392 | buildTYPSQLDA(typsqlda); |
| 393 | } |
| 394 | |
| 395 | updateLengthBytes(); |
| 396 | } |
| 397 | |
| 398 | // Build the command to execute an SQL SET Statement. |
| 399 | // Called by NETSetClientPiggybackCommand.write() |
| 400 | // |
| 401 | // preconditions: |
| 402 | // the sqlam and/or prdid must support command and parameters passed to this method, |
| 403 | // method will not validate against the connection's level of support |
| 404 | void buildEXCSQLSET(Section section) |
| 405 | throws SqlException { |
| 406 | createCommand(); |
| 407 | markLengthBytes(CodePoint.EXCSQLSET); |
| 408 | buildPKGNAMCSN(section); // is this PKGNAMCSN or PKGNAMCT |
| 409 | updateLengthBytes(); |
| 410 | } |
| 411 | |
| 412 | // Build the Execute SQL Statement (EXCSQLSTT) Command |
| 413 | // to execute a non-cursor SQL statement previously bound into a named package |
| 414 | // of a relational database (RDB). The SQL statement can optionally include |
| 415 | // references to input variables, output variables, or both. |
| 416 | // |
| 417 | // At SQLAM >= 7 we can get a DA back on this, are there times that we want to request it |
| 418 | // If so, we probably want to pass a parameter indicating the sqldaLevel requested. |
| 419 | // |
| 420 | // preconditions: |
| 421 | // the sqlam and/or prdid must support command and parameters passed to this method, |
| 422 | // method will not validate against the connection's level of support |
| 423 | // Here is the preferred codepoint ordering: |
| 424 | // PKGNAMCSN |
| 425 | // RDBCMTOK |
| 426 | // OUTEXP |
| 427 | // QRYBLKSZ |
| 428 | // MAXBLKEXT |
| 429 | // MAXRSLCNT |
| 430 | // RSLSETFLG |
| 431 | // QRYROWSET |
| 432 | // RTNSQLDA |
| 433 | // TYPSQLDA |
| 434 | // NBRROW |
| 435 | // ATMIND |
| 436 | // PRCNAM |
| 437 | // OUTOVROPT |
| 438 | // RDBNAM |
| 439 | void buildEXCSQLSTT(Section section, |
| 440 | boolean sendOutexp, |
| 441 | boolean outexp, |
| 442 | boolean sendPrcnam, |
| 443 | String prcnam, |
| 444 | boolean sendQryblksz, |
| 445 | boolean sendMaxrslcnt, |
| 446 | int maxrslcnt, |
| 447 | boolean sendMaxblkext, |
| 448 | int maxblkext, |
| 449 | boolean sendRslsetflg, |
| 450 | int resultSetFlag, |
| 451 | boolean sendQryrowset, |
| 452 | int qryrowset) throws SqlException { |
| 453 | createCommand(); |
| 454 | markLengthBytes(CodePoint.EXCSQLSTT); |
| 455 | |
| 456 | buildPKGNAMCSN(section); |
| 457 | buildRDBCMTOK(); |
| 458 | if (sendOutexp) { |
| 459 | buildOUTEXP(outexp); |
| 460 | } |
| 461 | if (sendQryblksz) { |
| 462 | buildQRYBLKSZ(); |
| 463 | } |
| 464 | if (sendQryrowset && sendMaxblkext) { |
| 465 | buildMAXBLKEXT(maxblkext); |
| 466 | } |
| 467 | if (sendMaxrslcnt) { |
| 468 | buildMAXRSLCNT(maxrslcnt); |
| 469 | } |
| 470 | if (sendRslsetflg) { |
| 471 | buildRSLSETFLG(resultSetFlag); |
| 472 | } |
| 473 | if (sendQryrowset) { |
| 474 | buildQRYROWSET(qryrowset); |
| 475 | } |
| 476 | if (sendPrcnam) { |
| 477 | buildPRCNAM(prcnam); |
| 478 | } |
| 479 | |
| 480 | updateLengthBytes(); // command is complete, update the length bytes |
| 481 | } |
| 482 | |
| 483 | // Build the Describe SQL Statement command. |
| 484 | // |
| 485 | // preconditions: |
| 486 | // the sqlam and/or prdid must support command and parameters passed to this method, |
| 487 | // method will not validate against the connection's level of support |
| 488 | void buildDSCSQLSTT(Section section, |
| 489 | boolean sendTypsqlda, |
| 490 | int typsqlda) throws SqlException { |
| 491 | createCommand(); |
| 492 | markLengthBytes(CodePoint.DSCSQLSTT); |
| 493 | |
| 494 | buildPKGNAMCSN(section); |
| 495 | if (sendTypsqlda) { |
| 496 | buildTYPSQLDA(typsqlda); |
| 497 | } |
| 498 | |
| 499 | updateLengthBytes(); |
| 500 | } |
| 501 | |
| 502 | // Build the SQL Program Variable Data Command Data Object. |
| 503 | // This object contains the input data to an SQL statement |
| 504 | // that an RDB is executing. |
| 505 | // |
| 506 | // preconditions: |
| 507 | boolean buildSQLDTAcommandData(int numInputColumns, |
| 508 | ColumnMetaData parameterMetaData, |
| 509 | Object[] inputRow) throws SqlException { |
| 510 | createEncryptedCommandData(); |
| 511 | |
| 512 | int loc = offset_; |
| 513 | |
| 514 | markLengthBytes(CodePoint.SQLDTA); |
| 515 | |
| 516 | int[][] protocolTypesAndLengths = allocateLidAndLengthsArray(parameterMetaData); |
| 517 | |
| 518 | java.util.Hashtable protocolTypeToOverrideLidMapping = null; |
| 519 | java.util.ArrayList mddOverrideArray = null; |
| 520 | protocolTypeToOverrideLidMapping = |
| 521 | computeProtocolTypesAndLengths(inputRow, parameterMetaData, protocolTypesAndLengths, |
| 522 | protocolTypeToOverrideLidMapping); |
| 523 | |
| 524 | boolean overrideExists = false; |
| 525 | |
| 526 | buildFDODSC(numInputColumns, |
| 527 | protocolTypesAndLengths, |
| 528 | overrideExists, |
| 529 | protocolTypeToOverrideLidMapping, |
| 530 | mddOverrideArray); |
| 531 | |
| 532 | buildFDODTA(numInputColumns, |
| 533 | protocolTypesAndLengths, |
| 534 | inputRow); |
| 535 | |
| 536 | updateLengthBytes(); // for sqldta |
| 537 | if (netAgent_.netConnection_.getSecurityMechanism() == |
| 538 | NetConfiguration.SECMEC_EUSRIDDTA || |
| 539 | netAgent_.netConnection_.getSecurityMechanism() == |
| 540 | NetConfiguration.SECMEC_EUSRPWDDTA) { |
| 541 | encryptDataStream(loc); |
| 542 | } |
| 543 | |
| 544 | return overrideExists; |
| 545 | } |
| 546 | |
| 547 | // Build the FDOCA Data Descriptor Scalar whose value is a FDOCA |
| 548 | // Descriptor or a segment of an FDOCA Descriptor. |
| 549 | // |
| 550 | // preconditions: |
| 551 | private void buildFDODSC(int numColumns, |
| 552 | int[][] protocolTypesAndLengths, |
| 553 | boolean overrideExists, |
| 554 | java.util.Hashtable overrideMap, |
| 555 | java.util.ArrayList overrideArray) throws SqlException { |
| 556 | markLengthBytes(CodePoint.FDODSC); |
| 557 | buildSQLDTA(numColumns, protocolTypesAndLengths, overrideExists, overrideMap, overrideArray); |
| 558 | updateLengthBytes(); |
| 559 | } |
| 560 | |
| 561 | // Build the FDOCA SQLDTA Late Row Descriptor. |
| 562 | // |
| 563 | // preconditions: |
| 564 | protected void buildSQLDTA(int numColumns, |
| 565 | int[][] lidAndLengthOverrides, |
| 566 | boolean overrideExists, |
| 567 | java.util.Hashtable overrideMap, |
| 568 | java.util.ArrayList overrideArray) throws SqlException { |
| 569 | // mdd overrides need to be built first if any before the descriptors are built. |
| 570 | if (overrideExists) { |
| 571 | buildMddOverrides(overrideArray); |
| 572 | writeBytes(FdocaConstants.MDD_SQLDTAGRP_TOSEND); |
| 573 | } |
| 574 | |
| 575 | buildSQLDTAGRP(numColumns, lidAndLengthOverrides, overrideExists, overrideMap); |
| 576 | |
| 577 | if (overrideExists) { |
| 578 | writeBytes(FdocaConstants.MDD_SQLDTA_TOSEND); |
| 579 | } |
| 580 | writeBytes(FdocaConstants.SQLDTA_RLO_TOSEND); |
| 581 | } |
| 582 | |
| 583 | // Build the FDOCA SQLDTAGRP Late Group Descriptor. |
| 584 | // preconditions: |
| 585 | protected void buildSQLDTAGRP(int numVars, |
| 586 | int[][] lidAndLengthOverrides, |
| 587 | boolean mddRequired, |
| 588 | java.util.Hashtable overrideMap) throws SqlException { |
| 589 | int n = 0; |
| 590 | int offset = 0; |
| 591 | |
| 592 | n = calculateColumnsInSQLDTAGRPtriplet(numVars); |
| 593 | buildTripletHeader(((3 * n) + 3), |
| 594 | FdocaConstants.NGDA_TRIPLET_TYPE, |
| 595 | FdocaConstants.SQLDTAGRP_LID); |
| 596 | |
| 597 | do { |
| 598 | writeLidAndLengths(lidAndLengthOverrides, n, offset, mddRequired, overrideMap); |
| 599 | numVars -= n; |
| 600 | if (numVars == 0) { |
| 601 | break; |
| 602 | } |
| 603 | |
| 604 | offset += n; |
| 605 | n = calculateColumnsInSQLDTAGRPtriplet(numVars); |
| 606 | buildTripletHeader(((3 * n) + 3), |
| 607 | FdocaConstants.CPT_TRIPLET_TYPE, |
| 608 | 0x00); |
| 609 | } while (true); |
| 610 | } |
| 611 | |
| 612 | /////////// perf end |
| 613 | |
| 614 | |
| 615 | protected void buildOUTOVR(ResultSet resultSet, |
| 616 | ColumnMetaData resultSetMetaData) throws SqlException { |
| 617 | createCommandData(); |
| 618 | markLengthBytes(CodePoint.OUTOVR); |
| 619 | int[][] outputOverrides = |
| 620 | calculateOUTOVRLidAndLengthOverrides(resultSet, resultSetMetaData); |
| 621 | buildSQLDTARD(resultSetMetaData.columns_, outputOverrides); |
| 622 | updateLengthBytes(); |
| 623 | } |
| 624 | |
| 625 | private int[][] calculateOUTOVRLidAndLengthOverrides(ResultSet resultSet, |
| 626 | ColumnMetaData resultSetMetaData) { |
| 627 | int numVars = resultSetMetaData.columns_; |
| 628 | int[][] lidAndLengths = new int[numVars][2]; //everything initialized to "default triplet" |
| 629 | |
| 630 | return lidAndLengths; |
| 631 | } |
| 632 | |
| 633 | protected void buildSQLDTARD(int numColumns, int[][] lidAndLengthOverrides) throws SqlException { |
| 634 | buildSQLCADTA(numColumns, lidAndLengthOverrides); |
| 635 | writeBytes(FdocaConstants.SQLDTARD_RLO_TOSEND); |
| 636 | } |
| 637 | |
| 638 | protected void buildSQLCADTA(int numColumns, int[][] lidAndLengthOverrides) throws SqlException { |
| 639 | buildSQLDTAGRP(numColumns, lidAndLengthOverrides, false, null); // false means no mdd override |
| 640 | writeBytes(FdocaConstants.SQLCADTA_RLO_TOSEND); |
| 641 | } |
| 642 | |
| 643 | private void buildFDODTA(int numVars, |
| 644 | int[][] protocolTypesAndLengths, |
| 645 | Object[] inputs) throws SqlException { |
| 646 | try |
| 647 | { |
| 648 | long dataLength = 0; |
| 649 | Object o = null; |
| 650 | |
| 651 | markLengthBytes(CodePoint.FDODTA); |
| 652 | write1Byte(FdocaConstants.NULL_LID); // write the 1-byte row indicator |
| 653 | |
| 654 | // write data for each input column |
| 655 | for (int i = 0; i < numVars; i++) { |
| 656 | if (inputs[i] == null) { |
| 657 | if ((protocolTypesAndLengths[i][0] % 2) == 1) { |
| 658 | write1Byte(FdocaConstants.NULL_DATA); |
| 659 | } else { |
| 660 | //bug check |
| 661 | } |
| 662 | } else { |
| 663 | if ((protocolTypesAndLengths[i][0] % 2) == 1) { |
| 664 | write1Byte(FdocaConstants.INDICATOR_NULLABLE); |
| 665 | } |
| 666 | |
| 667 | switch (protocolTypesAndLengths[i][0] | 0x01) { // mask out null indicator |
| 668 | case DRDAConstants.DRDA_TYPE_NVARMIX: |
| 669 | case DRDAConstants.DRDA_TYPE_NLONGMIX: |
| 670 | // What to do for server that don't understand 1208 (UTF-8) |
| 671 | // check for a promototed type, and use that instead if it exists |
| 672 | o = retrievePromotedParameterIfExists(i); |
| 673 | if (o == null) { |
| 674 | writeSingleorMixedCcsidLDString((String) inputs[i], netAgent_.typdef_.getCcsidMbcEncoding()); |
| 675 | } else { // use the promototed object instead |
| 676 | Clob c = (Clob) o; |
| 677 | dataLength = c.length(); |
| 678 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 679 | } |
| 680 | break; |
| 681 | |
| 682 | case DRDAConstants.DRDA_TYPE_NVARCHAR: |
| 683 | case DRDAConstants.DRDA_TYPE_NLONG: |
| 684 | o = retrievePromotedParameterIfExists(i); |
| 685 | if (o == null) { |
| 686 | |
| 687 | } else { // use the promototed object instead |
| 688 | dataLength = ((Clob) o).length(); |
| 689 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 690 | } |
| 691 | break; |
| 692 | |
| 693 | case DRDAConstants.DRDA_TYPE_NINTEGER: |
| 694 | writeIntFdocaData(((Integer) inputs[i]).intValue()); |
| 695 | break; |
| 696 | case DRDAConstants.DRDA_TYPE_NSMALL: |
| 697 | writeShortFdocaData(((Short) inputs[i]).shortValue()); |
| 698 | break; |
| 699 | case DRDAConstants.DRDA_TYPE_NFLOAT4: |
| 700 | writeFloat(((Float) inputs[i]).floatValue()); |
| 701 | break; |
| 702 | case DRDAConstants.DRDA_TYPE_NFLOAT8: |
| 703 | writeDouble(((Double) inputs[i]).doubleValue()); |
| 704 | break; |
| 705 | case DRDAConstants.DRDA_TYPE_NDECIMAL: |
| 706 | writeBigDecimal((java.math.BigDecimal) inputs[i], |
| 707 | (protocolTypesAndLengths[i][1] >> 8) & 0xff, // described precision not actual |
| 708 | protocolTypesAndLengths[i][1] & 0xff); // described scale, not actual |
| 709 | break; |
| 710 | case DRDAConstants.DRDA_TYPE_NDATE: |
| 711 | writeDate((java.sql.Date) inputs[i]); |
| 712 | break; |
| 713 | case DRDAConstants.DRDA_TYPE_NTIME: |
| 714 | writeTime((java.sql.Time) inputs[i]); |
| 715 | break; |
| 716 | case DRDAConstants.DRDA_TYPE_NTIMESTAMP: |
| 717 | writeTimestamp((java.sql.Timestamp) inputs[i]); |
| 718 | break; |
| 719 | case DRDAConstants.DRDA_TYPE_NINTEGER8: |
| 720 | writeLongFdocaData(((Long) inputs[i]).longValue()); |
| 721 | break; |
| 722 | case DRDAConstants.DRDA_TYPE_NVARBYTE: |
| 723 | case DRDAConstants.DRDA_TYPE_NLONGVARBYTE: |
| 724 | o = retrievePromotedParameterIfExists(i); |
| 725 | if (o == null) { |
| 726 | writeLDBytes((byte[]) inputs[i]); |
| 727 | } else { // use the promototed object instead |
| 728 | Blob b = (Blob) o; |
| 729 | dataLength = b.length(); |
| 730 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 731 | } |
| 732 | break; |
| 733 | case DRDAConstants.DRDA_TYPE_NLOBCSBCS: |
| 734 | case DRDAConstants.DRDA_TYPE_NLOBCDBCS: |
| 735 | // check for a promoted Clob |
| 736 | o = retrievePromotedParameterIfExists(i); |
| 737 | if (o == null) { |
| 738 | try { |
| 739 | dataLength = ((java.sql.Clob) inputs[i]).length(); |
| 740 | } catch (java.sql.SQLException e) { |
| 741 | throw new SqlException(netAgent_.logWriter_, |
| 742 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), |
| 743 | e); |
| 744 | } |
| 745 | } else { |
| 746 | dataLength = ((Clob) o).length(); |
| 747 | } |
| 748 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 749 | break; |
| 750 | case DRDAConstants.DRDA_TYPE_NLOBBYTES: |
| 751 | // check for a promoted Clob |
| 752 | o = retrievePromotedParameterIfExists(i); |
| 753 | if (o == null) { |
| 754 | try { |
| 755 | dataLength = ((java.sql.Blob) inputs[i]).length(); |
| 756 | } catch (java.sql.SQLException e) { |
| 757 | throw new SqlException(netAgent_.logWriter_, |
| 758 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), |
| 759 | e); |
| 760 | } |
| 761 | } else { // use promoted Blob |
| 762 | dataLength = ((Blob) o).length(); |
| 763 | } |
| 764 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 765 | break; |
| 766 | case DRDAConstants.DRDA_TYPE_NLOBCMIXED: |
| 767 | // check for a promoted Clob |
| 768 | o = retrievePromotedParameterIfExists(i); |
| 769 | if (o == null) { |
| 770 | if (((Clob) inputs[i]).isString()) { |
| 771 | dataLength = ((Clob) inputs[i]).getUTF8Length(); |
| 772 | } else // must be a Unicode stream |
| 773 | { |
| 774 | dataLength = ((Clob) inputs[i]).length(); |
| 775 | } |
| 776 | } else { // use promoted Clob |
| 777 | dataLength = ((Clob) o).length(); |
| 778 | } |
| 779 | setFDODTALobLength(protocolTypesAndLengths, i, dataLength); |
| 780 | break; |
| 781 | default: |
| 782 | throw new SqlException(netAgent_.logWriter_, |
| 783 | new ClientMessageId(SQLState.NET_UNRECOGNIZED_JDBC_TYPE), |
| 784 | new Integer(protocolTypesAndLengths[i][0]), |
| 785 | new Integer(numVars), new Integer(i)); |
| 786 | } |
| 787 | } |
| 788 | } |
| 789 | updateLengthBytes(); // for fdodta |
| 790 | } |
| 791 | catch ( java.sql.SQLException se ) |
| 792 | { |
| 793 | throw new SqlException(se); |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | // preconditions: |
| 798 | private void buildEXTDTA(ColumnMetaData parameterMetaData, |
| 799 | Object[] inputRow, |
| 800 | boolean chained) throws SqlException { |
| 801 | try |
| 802 | { |
| 803 | // build the EXTDTA data, if necessary |
| 804 | if (extdtaPositions_ != null) { |
| 805 | boolean chainFlag, chainedWithSameCorrelator; |
| 806 | |
| 807 | for (int i = 0; i < extdtaPositions_.size(); i++) { |
| 808 | int index = ((Integer) extdtaPositions_.get(i)).intValue(); |
| 809 | |
| 810 | // is this the last EXTDTA to be built? |
| 811 | if (i != extdtaPositions_.size() - 1) { // no |
| 812 | chainFlag = true; |
| 813 | chainedWithSameCorrelator = true; |
| 814 | } else { // yes |
| 815 | chainFlag = chained; |
| 816 | chainedWithSameCorrelator = false; |
| 817 | } |
| 818 | |
| 819 | // do we have to write a null byte? |
| 820 | boolean writeNullByte = false; |
| 821 | if (parameterMetaData.nullable_[index]) { |
| 822 | writeNullByte = true; |
| 823 | } |
| 824 | // Use the type of the input parameter rather than the input |
| 825 | // column if possible. |
| 826 | int parameterType = parameterMetaData.clientParamtertype_[index]; |
| 827 | if (parameterType == 0) { |
| 828 | parameterType = parameterMetaData.types_[index]; |
| 829 | } |
| 830 | |
| 831 | // the follow types are possible due to promotion to BLOB |
| 832 | if (parameterType == Types.BLOB |
| 833 | || parameterType == Types.BINARY |
| 834 | || parameterType == Types.VARBINARY |
| 835 | || parameterType == Types.LONGVARBINARY) { |
| 836 | Blob o = (Blob) retrievePromotedParameterIfExists(index); |
| 837 | java.sql.Blob b = (o == null) ? (java.sql.Blob) inputRow[index] : o; |
| 838 | boolean isExternalBlob = !(b instanceof org.apache.derby.client.am.Blob); |
| 839 | if (isExternalBlob) { |
| 840 | try { |
| 841 | writeScalarStream(chainFlag, |
| 842 | chainedWithSameCorrelator, |
| 843 | CodePoint.EXTDTA, |
| 844 | (int) b.length(), |
| 845 | b.getBinaryStream(), |
| 846 | writeNullByte, |
| 847 | index + 1); |
| 848 | } catch (java.sql.SQLException e) { |
| 849 | throw new SqlException(netAgent_.logWriter_, |
| 850 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), |
| 851 | e); |
| 852 | } |
| 853 | } else if (((Blob) b).isBinaryStream()) { |
| 854 | writeScalarStream(chainFlag, |
| 855 | chainedWithSameCorrelator, |
| 856 | CodePoint.EXTDTA, |
| 857 | (int) ((Blob) b).length(), |
| 858 | ((Blob) b).getBinaryStream(), |
| 859 | writeNullByte, |
| 860 | index + 1); |
| 861 | } else { // must be a binary string |
| 862 | // note: a possible optimization is to use writeScalarLobBytes |
| 863 | // when the input is small |
| 864 | // use this: if (b.length () < DssConstants.MAX_DSS_LEN - 6 - 4) |
| 865 | // writeScalarLobBytes (...) |
| 866 | // Yes, this would avoid having to new up a java.io.ByteArrayInputStream |
| 867 | writeScalarStream(chainFlag, |
| 868 | chainedWithSameCorrelator, |
| 869 | CodePoint.EXTDTA, |
| 870 | (int) ((Blob) b).length(), |
| 871 | ((Blob) b).getBinaryStream(), |
| 872 | writeNullByte, |
| 873 | index + 1); |
| 874 | } |
| 875 | } |
| 876 | // the follow types are possible due to promotion to CLOB |
| 877 | else if ( |
| 878 | parameterType == Types.CLOB |
| 879 | || parameterType == Types.CHAR |
| 880 | || parameterType == Types.VARCHAR |
| 881 | || parameterType == Types.LONGVARCHAR) { |
| 882 | Clob o = (Clob) retrievePromotedParameterIfExists(index); |
| 883 | java.sql.Clob c = (o == null) ? (java.sql.Clob) inputRow[index] : o; |
| 884 | boolean isExternalClob = !(c instanceof org.apache.derby.client.am.Clob); |
| 885 | |
| 886 | if (isExternalClob) { |
| 887 | try { |
| 888 | writeScalarStream(chainFlag, |
| 889 | chainedWithSameCorrelator, |
| 890 | CodePoint.EXTDTA, |
| 891 | (int) c.length(), |
| 892 | c.getCharacterStream(), |
| 893 | writeNullByte, |
| 894 | index + 1); |
| 895 | } catch (java.sql.SQLException e) { |
| 896 | throw new SqlException(netAgent_.logWriter_, |
| 897 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), |
| 898 | e); |
| 899 | } |
| 900 | } else if (((Clob) c).isCharacterStream()) { |
| 901 | writeScalarStream(chainFlag, |
| 902 | chainedWithSameCorrelator, |
| 903 | CodePoint.EXTDTA, |
| 904 | (int) ((Clob) c).length(), |
| 905 | ((Clob) c).getCharacterStream(), |
| 906 | writeNullByte, |
| 907 | index + 1); |
| 908 | } else if (((Clob) c).isAsciiStream()) { |
| 909 | writeScalarStream(chainFlag, |
| 910 | chainedWithSameCorrelator, |
| 911 | CodePoint.EXTDTA, |
| 912 | (int) ((Clob) c).length(), |
| 913 | ((Clob) c).getAsciiStream(), |
| 914 | writeNullByte, |
| 915 | index + 1); |
| 916 | } else if (((Clob) c).isUnicodeStream()) { |
| 917 | writeScalarStream(chainFlag, |
| 918 | chainedWithSameCorrelator, |
| 919 | CodePoint.EXTDTA, |
| 920 | (int) ((Clob) c).length(), |
| 921 | ((Clob) c).getUnicodeStream(), |
| 922 | writeNullByte, |
| 923 | index + 1); |
| 924 | } else { // must be a String |
| 925 | // note: a possible optimization is to use writeScalarLobBytes |
| 926 | // when the input is small. |
| 927 | // use this: if (c.length () < DssConstants.MAX_DSS_LEN - 6 - 4) |
| 928 | // writeScalarLobBytes (...) |
| 929 | writeScalarStream(chainFlag, |
| 930 | chainedWithSameCorrelator, |
| 931 | CodePoint.EXTDTA, |
| 932 | (int) ((Clob) c).getUTF8Length(), |
| 933 | new java.io.ByteArrayInputStream(((Clob) c).getUtf8String()), |
| 934 | writeNullByte, |
| 935 | index + 1); |
| 936 | } |
| 937 | } |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | catch ( java.sql.SQLException se ) |
| 942 | { |
| 943 | throw new SqlException(se); |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | |
| 948 | //-------------------------helper methods------------------------------------- |
| 949 | // returns the a promototedParameter object for index or null if it does not exist |
| 950 | private Object retrievePromotedParameterIfExists(int index) { |
| 951 | |
| 952 | // consider using a nonsynchronized container or array |
| 953 | if (promototedParameters_.isEmpty()) { |
| 954 | return null; |
| 955 | } |
| 956 | return promototedParameters_.get(new Integer(index)); |
| 957 | } |
| 958 | |
| 959 | private int calculateColumnsInSQLDTAGRPtriplet(int numVars) { |
| 960 | if (numVars > FdocaConstants.MAX_VARS_IN_NGDA) //rename to MAX_VARS_IN_SQLDTAGRP_TRIPLET |
| 961 | { |
| 962 | return FdocaConstants.MAX_VARS_IN_NGDA; |
| 963 | } |
| 964 | return numVars; |
| 965 | } |
| 966 | |
| 967 | |
| 968 | // Consider refacctor so that this does not even have to look |
| 969 | // at the actual object data, and only uses tags from the meta data |
| 970 | // only have to call this once, rather than calling this for every input row |
| 971 | // backburner: after refactoring this, later on, think about replacing case statements with table lookups |
| 972 | private java.util.Hashtable computeProtocolTypesAndLengths(Object[] inputRow, |
| 973 | ColumnMetaData parameterMetaData, |
| 974 | int[][] lidAndLengths, |
| 975 | java.util.Hashtable overrideMap) throws SqlException { |
| 976 | try |
| 977 | { |
| 978 | int numVars = parameterMetaData.columns_; |
| 979 | String s = null; |
| 980 | if (!promototedParameters_.isEmpty()) { |
| 981 | promototedParameters_.clear(); |
| 982 | } |
| 983 | |
| 984 | for (int i = 0; i < numVars; i++) { |
| 985 | |
| 986 | int jdbcType; |
| 987 | // Send the input type unless it is not available. |
| 988 | // (e.g an output parameter) |
| 989 | jdbcType = parameterMetaData.clientParamtertype_[i]; |
| 990 | if (jdbcType == 0) { |
| 991 | jdbcType = parameterMetaData.types_[i]; |
| 992 | } |
| 993 | |
| 994 | // jdbc semantics - This should happen outside of the build methods |
| 995 | // if describe input is not supported, we require the user to at least |
| 996 | // call setNull() and provide the type information. Otherwise, we won't |
| 997 | // be able to guess the right PROTOCOL type to send to the server, and an |
| 998 | // exception is thrown. |
| 999 | |
| 1000 | if (jdbcType == 0) { |
| 1001 | throw new SqlException(netAgent_.logWriter_, |
| 1002 | new ClientMessageId(SQLState.NET_INVALID_JDBC_TYPE_FOR_PARAM), |
| 1003 | new Integer(i)); |
| 1004 | } |
| 1005 | |
| 1006 | switch (jdbcType) { |
| 1007 | case java.sql.Types.CHAR: |
| 1008 | case java.sql.Types.VARCHAR: |
| 1009 | // lid: PROTOCOL_TYPE_NVARMIX, length override: 32767 (max) |
| 1010 | // dataFormat: String |
| 1011 | // this won't work if 1208 is not supported |
| 1012 | s = (String) inputRow[i]; |
| 1013 | // assumes UTF-8 characters at most 3 bytes long |
| 1014 | // Flow the String as a VARCHAR |
| 1015 | if (s == null || s.length() <= 32767 / 3) { |
| 1016 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NVARMIX; |
| 1017 | lidAndLengths[i][1] = 32767; |
| 1018 | } else { |
| 1019 | // Flow the data as CLOB data if the data too large to for LONGVARCHAR |
| 1020 | java.io.ByteArrayInputStream bais = null; |
| 1021 | byte[] ba = null; |
| 1022 | try { |
| 1023 | ba = s.getBytes("UTF-8"); |
| 1024 | bais = new java.io.ByteArrayInputStream(ba); |
| 1025 | Clob c = new Clob(netAgent_, bais, "UTF-8", ba.length); |
| 1026 | // inputRow[i] = c; |
| 1027 | // Place the new Lob in the promototedParameter_ collection for |
| 1028 | // NetStatementRequest use |
| 1029 | promototedParameters_.put(new Integer(i), c); |
| 1030 | |
| 1031 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCMIXED; |
| 1032 | lidAndLengths[i][1] = buildPlaceholderLength(c.length()); |
| 1033 | } catch (java.io.UnsupportedEncodingException e) { |
| 1034 | throw new SqlException(netAgent_.logWriter_, |
| 1035 | new ClientMessageId(SQLState.UNSUPPORTED_ENCODING), |
| 1036 | "byte array", "Clob", e); |
| 1037 | } |
| 1038 | } |
| 1039 | break; |
| 1040 | case java.sql.Types.INTEGER: |
| 1041 | // lid: PROTOCOL_TYPE_NINTEGER, length override: 4 |
| 1042 | // dataFormat: Integer |
| 1043 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NINTEGER; |
| 1044 | lidAndLengths[i][1] = 4; |
| 1045 | break; |
| 1046 | case java.sql.Types.BOOLEAN: |
| 1047 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NBOOLEAN; |
| 1048 | lidAndLengths[i][1] = 1; |
| 1049 | break; |
| 1050 | case java.sql.Types.SMALLINT: |
| 1051 | case java.sql.Types.TINYINT: |
| 1052 | case java.sql.Types.BIT: |
| 1053 | // lid: PROTOCOL_TYPE_NSMALL, length override: 2 |
| 1054 | // dataFormat: Short |
| 1055 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NSMALL; |
| 1056 | lidAndLengths[i][1] = 2; |
| 1057 | break; |
| 1058 | case java.sql.Types.REAL: |
| 1059 | // lid: PROTOCOL_TYPE_NFLOAT4, length override: 4 |
| 1060 | // dataFormat: Float |
| 1061 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NFLOAT4; |
| 1062 | lidAndLengths[i][1] = 4; |
| 1063 | break; |
| 1064 | case java.sql.Types.DOUBLE: |
| 1065 | case java.sql.Types.FLOAT: |
| 1066 | // lid: PROTOCOL_TYPE_NFLOAT8, length override: 8 |
| 1067 | // dataFormat: Double |
| 1068 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NFLOAT8; |
| 1069 | lidAndLengths[i][1] = 8; |
| 1070 | break; |
| 1071 | case java.sql.Types.NUMERIC: |
| 1072 | case java.sql.Types.DECIMAL: |
| 1073 | // lid: PROTOCOL_TYPE_NDECIMAL |
| 1074 | // dataFormat: java.math.BigDecimal |
| 1075 | // input only: |
| 1076 | // if null and describe input - use describe input precision and scale |
| 1077 | // if not null and describe input - calculate precision and actual scale from data |
| 1078 | // if null and no describe input - guess with precision 1 scale 0 |
| 1079 | // if not null and no describe input - calculate precision and actual scale from data |
| 1080 | // output only: |
| 1081 | // use largest precision/scale based on registered scale from registerOutParameter |
| 1082 | // inout: |
| 1083 | // if null - use largest precision/scale based on scale from registerOutParameter |
| 1084 | // if not null - write bigDecimal () pass registered scale so it can pad, you don't even |
| 1085 | // have to look at the actual scale at this level. |
| 1086 | /* |
| 1087 | if (parameterMetaData.isGuessed) { |
| 1088 | java.math.BigDecimal bigDecimal = (java.math.BigDecimal) inputRow[i]; |
| 1089 | int precision = Utils.computeBigDecimalPrecision (bigDecimal); |
| 1090 | lidAndLengths[i][1] = (precision << 8) + // use precision above |
| 1091 | (bigDecimal.scale() << 0); |
| 1092 | } |
| 1093 | */ |
| 1094 | // Split this entire method into two parts, the first method is called only once and the inputRow is not passed,!! |
| 1095 | // the second method is called for every inputRow and overrides inputDA lengths/scales based upon the acutal data! |
| 1096 | // for decimal and blob columns only |
| 1097 | int precision = parameterMetaData.sqlPrecision_[i]; |
| 1098 | int scale = parameterMetaData.sqlScale_[i]; |
| 1099 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NDECIMAL; |
| 1100 | lidAndLengths[i][1] = (precision << 8) + (scale << 0); |
| 1101 | break; |
| 1102 | case java.sql.Types.DATE: |
| 1103 | // for input, output, and inout parameters |
| 1104 | // lid: PROTOCOL_TYPE_NDATE, length override: 8 |
| 1105 | // dataFormat: java.sql.Date |
| 1106 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NDATE; |
| 1107 | lidAndLengths[i][1] = 10; |
| 1108 | break; |
| 1109 | case java.sql.Types.TIME: |
| 1110 | // for input, output, and inout parameters |
| 1111 | // lid: PROTOCOL_TYPE_NTIME, length override: 8 |
| 1112 | // dataFormat: java.sql.Time |
| 1113 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NTIME; |
| 1114 | lidAndLengths[i][1] = 8; |
| 1115 | break; |
| 1116 | case java.sql.Types.TIMESTAMP: |
| 1117 | // for input, output, and inout parameters |
| 1118 | // lid: PROTOCOL_TYPE_NTIME, length overrid: 26 |
| 1119 | // dataFormat: java.sql.Timestamp |
| 1120 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NTIMESTAMP; |
| 1121 | lidAndLengths[i][1] = 26; |
| 1122 | break; |
| 1123 | case java.sql.Types.BIGINT: |
| 1124 | // if SQLAM < 6 this should be mapped to decimal (19,0) in common layer |
| 1125 | // if SQLAM >=6, lid: PROTOCOL_TYPE_NINTEGER8, length override: 8 |
| 1126 | // dataFormat: Long |
| 1127 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NINTEGER8; |
| 1128 | lidAndLengths[i][1] = 8; |
| 1129 | break; |
| 1130 | case java.sql.Types.LONGVARCHAR: |
| 1131 | // Is this the right thing to do // should this be 32700 |
| 1132 | s = (String) inputRow[i]; |
| 1133 | if (s == null || s.length() <= 32767 / 3) { |
| 1134 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLONGMIX; |
| 1135 | lidAndLengths[i][1] = 32767; |
| 1136 | } else { |
| 1137 | // Flow the data as CLOB data if the data too large to for LONGVARCHAR |
| 1138 | java.io.ByteArrayInputStream bais = null; |
| 1139 | byte[] ba = null; |
| 1140 | try { |
| 1141 | ba = s.getBytes("UTF-8"); |
| 1142 | bais = new java.io.ByteArrayInputStream(ba); |
| 1143 | Clob c = new Clob(netAgent_, bais, "UTF-8", ba.length); |
| 1144 | |
| 1145 | // inputRow[i] = c; |
| 1146 | // Place the new Lob in the promototedParameter_ collection for |
| 1147 | // NetStatementRequest use |
| 1148 | promototedParameters_.put(new Integer(i), c); |
| 1149 | |
| 1150 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCMIXED; |
| 1151 | lidAndLengths[i][1] = buildPlaceholderLength(c.length()); |
| 1152 | } catch (java.io.UnsupportedEncodingException e) { |
| 1153 | throw new SqlException(netAgent_.logWriter_, |
| 1154 | new ClientMessageId(SQLState.UNSUPPORTED_ENCODING), |
| 1155 | "byte array", "Clob"); |
| 1156 | } |
| 1157 | } |
| 1158 | break; |
| 1159 | case java.sql.Types.BINARY: |
| 1160 | case java.sql.Types.VARBINARY: |
| 1161 | byte[] ba = (byte[]) inputRow[i]; |
| 1162 | if (ba == null) { |
| 1163 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NVARBYTE; |
| 1164 | lidAndLengths[i][1] = 32767; |
| 1165 | } else if (ba.length <= 32767) { |
| 1166 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NVARBYTE; |
| 1167 | lidAndLengths[i][1] = 32767; |
| 1168 | } else { |
| 1169 | // Promote to a BLOB. Only reach this path in the absence of describe information. |
| 1170 | Blob b = new Blob(ba, netAgent_, 0); |
| 1171 | |
| 1172 | // inputRow[i] = b; |
| 1173 | // Place the new Lob in the promototedParameter_ collection for |
| 1174 | // NetStatementRequest use |
| 1175 | promototedParameters_.put(new Integer(i), b); |
| 1176 | |
| 1177 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBBYTES; |
| 1178 | lidAndLengths[i][1] = buildPlaceholderLength(ba.length); |
| 1179 | } |
| 1180 | break; |
| 1181 | case java.sql.Types.LONGVARBINARY: |
| 1182 | ba = (byte[]) inputRow[i]; |
| 1183 | if (ba == null) { |
| 1184 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLONGVARBYTE; |
| 1185 | lidAndLengths[i][1] = 32767; |
| 1186 | } else if (ba.length <= 32767) { |
| 1187 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLONGVARBYTE; |
| 1188 | lidAndLengths[i][1] = 32767; |
| 1189 | } else { |
| 1190 | // Promote to a BLOB. Only reach this path in the absensce of describe information. |
| 1191 | Blob b = new Blob(ba, netAgent_, 0); |
| 1192 | |
| 1193 | // inputRow[i] = b; |
| 1194 | // Place the new Lob in the promototedParameter_ collection for |
| 1195 | // NetStatementRequest use |
| 1196 | promototedParameters_.put(new Integer(i), b); |
| 1197 | |
| 1198 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBBYTES; |
| 1199 | lidAndLengths[i][1] = buildPlaceholderLength(ba.length); |
| 1200 | } |
| 1201 | break; |
| 1202 | case java.sql.Types.BLOB: |
| 1203 | java.sql.Blob b = (java.sql.Blob) inputRow[i]; |
| 1204 | if (b == null) { |
| 1205 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBBYTES; |
| 1206 | lidAndLengths[i][1] = |
| 1207 | buildPlaceholderLength(parameterMetaData.sqlLength_[i]); |
| 1208 | } else { |
| 1209 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBBYTES; |
| 1210 | try { |
| 1211 | lidAndLengths[i][1] = buildPlaceholderLength(b.length()); |
| 1212 | } catch (java.sql.SQLException e) { |
| 1213 | throw new SqlException(netAgent_.logWriter_, |
| 1214 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), e); |
| 1215 | } |
| 1216 | } |
| 1217 | break; |
| 1218 | case java.sql.Types.CLOB: |
| 1219 | { |
| 1220 | // use columnMeta.singleMixedByteOrDouble_ to decide protocolType |
| 1221 | java.sql.Clob c = (java.sql.Clob) inputRow[i]; |
| 1222 | boolean isExternalClob = !(c instanceof org.apache.derby.client.am.Clob); |
| 1223 | long lobLength = 0; |
| 1224 | if (c == null) { |
| 1225 | lobLength = parameterMetaData.sqlLength_[i]; |
| 1226 | } else if (isExternalClob) { |
| 1227 | try { |
| 1228 | lobLength = c.length(); |
| 1229 | } catch (java.sql.SQLException e) { |
| 1230 | throw new SqlException(netAgent_.logWriter_, |
| 1231 | new ClientMessageId(SQLState.NET_ERROR_GETTING_BLOB_LENGTH), |
| 1232 | e); |
| 1233 | } |
| 1234 | } else { |
| 1235 | lobLength = ((Clob) c).length(); |
| 1236 | } |
| 1237 | if (c == null) { |
| 1238 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCMIXED; |
| 1239 | lidAndLengths[i][1] = buildPlaceholderLength(lobLength); |
| 1240 | } else if (isExternalClob) { |
| 1241 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCDBCS; |
| 1242 | lidAndLengths[i][1] = buildPlaceholderLength(lobLength); |
| 1243 | } else if (((Clob) c).isCharacterStream()) { |
| 1244 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCDBCS; |
| 1245 | lidAndLengths[i][1] = buildPlaceholderLength(lobLength); |
| 1246 | } else if (((Clob) c).isUnicodeStream()) { |
| 1247 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCMIXED; |
| 1248 | lidAndLengths[i][1] = buildPlaceholderLength(lobLength); |
| 1249 | } else if (((Clob) c).isAsciiStream()) { |
| 1250 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCSBCS; |
| 1251 | lidAndLengths[i][1] = buildPlaceholderLength(lobLength); |
| 1252 | } else if (((Clob) c).isString()) { |
| 1253 | lidAndLengths[i][0] = DRDAConstants.DRDA_TYPE_NLOBCMIXED; |
| 1254 | lidAndLengths[i][1] = buildPlaceholderLength(((Clob) c).getUTF8Length()); |
| 1255 | } |
| 1256 | } |
| 1257 | break; |
| 1258 | default : |
| 1259 | throw new SqlException(netAgent_.logWriter_, |
| 1260 | new ClientMessageId(SQLState.UNRECOGNIZED_JAVA_SQL_TYPE), |
| 1261 | new Integer(jdbcType)); |
| 1262 | } |
| 1263 | |
| 1264 | if (!parameterMetaData.nullable_[i]) { |
| 1265 | lidAndLengths[i][0]--; |
| 1266 | } |
| 1267 | } |
| 1268 | return overrideMap; |
| 1269 | } |
| 1270 | catch ( java.sql.SQLException se ) |
| 1271 | { |
| 1272 | throw new SqlException(se); |
| 1273 | } |
| 1274 | } |
| 1275 | |
| 1276 | private int buildPlaceholderLength(long totalLength) { |
| 1277 | if (totalLength < 0x7fff) { |
| 1278 | return 0x8002; // need 2 bytes |
| 1279 | } else if (totalLength < 0x7fffffff) { |
| 1280 | return 0x8004; // need 4 bytes |
| 1281 | } else if (totalLength < 0x7fffffffffffL) { |
| 1282 | return 0x8006; |
| 1283 | } else { |
| 1284 | return 0x8008; // need 8 bytes |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | // Output Expected indicates wheterh the requester expects the target |
| 1289 | // SQLAM to return output with an SQLDTARD reply data object |
| 1290 | // as a result of the execution of the referenced SQL statement. |
| 1291 | // this is a single byte. |
| 1292 | // there are two possible enumerated values: |
| 1293 | // 0x'F1' (CodePoint.TRUE) - for true indicating the requester expects output |
| 1294 | // 0x'F0' (CodePoint.FALSE) - for false indicating the requeser does not expect output |
| 1295 | // 0x'F0' is the default. |
| 1296 | // |
| 1297 | // preconditions: |
| 1298 | // sqlam must support this parameter on the command, method will not check. |
| 1299 | private void buildOUTEXP(boolean outputExpected) throws SqlException { |
| 1300 | if (outputExpected) { |
| 1301 | writeScalar1Byte(CodePoint.OUTEXP, CodePoint.TRUE); |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | // Maximum Number of Extra Blocks specifies a limit on the number of extra |
| 1306 | // blocks of answer set data per result set that the requester is capable of |
| 1307 | // receiveing. |
| 1308 | // this value must be able to be contained in a two byte signed number. |
| 1309 | // there is a minimum value of 0. |
| 1310 | // a zero indicates that the requester is not capable of receiving extra |
| 1311 | // query blocks of answer set data. |
| 1312 | // there is a SPCVAL of -1. |
| 1313 | // a value of -1 indicates that the requester is capable of receiving |
| 1314 | // the entire result set. |
| 1315 | // |
| 1316 | // preconditions: |
| 1317 | // sqlam must support this parameter on the command, method will not check. |
| 1318 | void buildMAXBLKEXT(int maxNumOfExtraBlocks) throws SqlException { |
| 1319 | if (maxNumOfExtraBlocks != 0) { |
| 1320 | writeScalar2Bytes(CodePoint.MAXBLKEXT, maxNumOfExtraBlocks); |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | // preconditions: |
| 1325 | void buildQRYROWSET(int fetchSize) throws SqlException { |
| 1326 | writeScalar4Bytes(CodePoint.QRYROWSET, fetchSize); |
| 1327 | } |
| 1328 | |
| 1329 | // The Procedure Name. |
| 1330 | // The default value of PRCNAM is the procedure name value contained |
| 1331 | // within the section identified by the pkgnamcsn parameter. If that |
| 1332 | // value is null, then the prcnam parameter must be specified. |
| 1333 | // it has a max length of 255. |
| 1334 | // the prcnam is required on commands if the procedure name is |
| 1335 | // specified by a host variable. |
| 1336 | // the default value is the procedure name contained in the section |
| 1337 | // specified by the pkgnamcsn parameter on the EXCSQLSTT command. |
| 1338 | // |
| 1339 | // preconditions: |
| 1340 | // sqlam must support this parameter for the command, method will not check. |
| 1341 | // prcnam can not be null, SQLException will be thrown |
| 1342 | // prcnam can not be 0 length or > 255 length, SQLException will be thrown. |
| 1343 | private void buildPRCNAM(String prcnam) throws SqlException { |
| 1344 | if (prcnam == null) { |
| 1345 | throw new SqlException(netAgent_.logWriter_, |
| 1346 | new ClientMessageId(SQLState.NET_NULL_PROCEDURE_NAME)); |
| 1347 | } |
| 1348 | |
| 1349 | int prcnamLength = prcnam.length(); |
| 1350 | if ((prcnamLength == 0) || (prcnamLength > 255)) { |
| 1351 | throw new SqlException(netAgent_.logWriter_, |
| 1352 | new ClientMessageId(SQLState.NET_PROCEDURE_NAME_LENGTH_OUT_OF_RANGE), |
| 1353 | new Integer(prcnamLength), new Integer(255)); |
| 1354 | } |
| 1355 | |
| 1356 | writeScalarString(CodePoint.PRCNAM, prcnam); |
| 1357 | } |
| 1358 | |
| 1359 | |
| 1360 | // Query Block Size specifies the query block size for the reply |
| 1361 | // data objects and the reply messages being returned from this command. |
| 1362 | // this is a 4 byte unsigned binary number. |
| 1363 | // the sqlam 6 min value is 512 and max value is 32767. |
| 1364 | // this value was increased in later sqlam levels. |
| 1365 | // until the code is ready to support larger query block sizes, |
| 1366 | // it will always use DssConstants.MAX_DSS_LEN which is 32767. |
| 1367 | // |
| 1368 | // preconditions: |
| 1369 | // sqlam must support this parameter for the command, method will not check. |
| 1370 | void buildQRYBLKSZ() throws SqlException { |
| 1371 | writeScalar4Bytes(CodePoint.QRYBLKSZ, DssConstants.MAX_DSS_LEN); |
| 1372 | } |
| 1373 | |
| 1374 | // Maximum Result Set Count specifies a limit on the number of result sets |
| 1375 | // the requester is capable of receiving as reply data in response to an ECSQLSTT |
| 1376 | // command that invokes a stored procedure. If the stored procedure generates |
| 1377 | // more than MAXRSLCNT result sets, then the target system returns at most, the first |
| 1378 | // MAXRSLCNT of these result sets. The stored procedure defines the order |
| 1379 | // in which the target system returns result sets. |
| 1380 | // this is s two byte signed binary number. |
| 1381 | // it has a min value of 0 which indicates the requester is not capable |
| 1382 | // of receiving result sets as reply data in response to the command. |
| 1383 | // a special value, -1 (CodePoint.MAXRSLCNT_NOLIMIT = 0xffff), indicates the |
| 1384 | // requester is capable of receiving all result sets in response the EXCSQLSTT. |
| 1385 | // |
| 1386 | // preconditions: |
| 1387 | // sqlam must support this parameter for the command, method will not check. |
| 1388 | // the value must be in correct range (-1 to 32767), method will not check. |
| 1389 | private void buildMAXRSLCNT(int maxResultSetCount) throws SqlException { |
| 1390 | if (maxResultSetCount == 0) { |
| 1391 | return; |
| 1392 | } |
| 1393 | writeScalar2Bytes(CodePoint.MAXRSLCNT, maxResultSetCount); |
| 1394 | } |
| 1395 | |
| 1396 | // RDB Commit Allowed specifies whether an RDB should allow the processing of any |
| 1397 | // commit or rollback operations that occure during execution of a statement. |
| 1398 | // True allow the processing of commits and rollbacks |
| 1399 | private void buildRDBCMTOK() throws SqlException { |
| 1400 | writeScalar1Byte(CodePoint.RDBCMTOK, CodePoint.TRUE); |
| 1401 | } |
| 1402 | |
| 1403 | // Result Set Flags is a single byte where each bit it a boolean flag. |
| 1404 | // It specifies wheter the requester desires the server to return name, |
| 1405 | // label and comment information for the columns of result sets generated by the command. |
| 1406 | // The default is b'00000000'. |
| 1407 | // columnNamesRequired |
| 1408 | // false means the requester does not desire column names returned. |
| 1409 | // true means the requester desires column names returned. |
| 1410 | // columnLabelsRequired |
| 1411 | // false means the requester does not desire column labels returned. |
| 1412 | // true means the requester desires column labels returned. |
| 1413 | // columnCommentsRequired |
| 1414 | // false means the requester does not desire column comments returned. |
| 1415 | // true means the requester desired column comments returned. |
| 1416 | // cantProcessAnswerSetData |
| 1417 | // false means that for each result set, the requester expects the command |
| 1418 | // to return an FDOCA description of the answer set data and to possibly |
| 1419 | // return answer set data. the block containing the end of the description |
| 1420 | // may be completed if room exists with answer set data. additional blocks |
| 1421 | // of answer set data may also be chained to the block containing the end of the |
| 1422 | // FDOCA description. up to the maximum number of extra blocks of answer set data |
| 1423 | // per result set specified in the MAXBLKEXT parameter. |
| 1424 | // true means that for each result set, the requester expects the command to return |
| 1425 | // an FDOCA description of the answer set data but does not expect the command to |
| 1426 | // return any answer set data. |
| 1427 | // at SQLAM 7, new flags are supported which can be used to return |
| 1428 | // standard, extended, and light sqlda |
| 1429 | // |
| 1430 | // preconditions: |
| 1431 | // sqlam must support this parameter, method will not check. |
| 1432 | private void buildRSLSETFLG(int resultSetFlag) throws SqlException { |
| 1433 | writeScalar1Byte(CodePoint.RSLSETFLG, resultSetFlag); |
| 1434 | } |
| 1435 | |
| 1436 | void buildQRYINSID(long qryinsid) throws SqlException { |
| 1437 | markLengthBytes(CodePoint.QRYINSID); |
| 1438 | writeLong(qryinsid); |
| 1439 | updateLengthBytes(); |
| 1440 | } |
| 1441 | |
| 1442 | |
| 1443 | // Return SQL Descriptor Area controls whether to return |
| 1444 | // an SQL descriptor area that applies to the SQL statement this command |
| 1445 | // identifies. The target SQLAM obtains the SQL descriptor area by performing |
| 1446 | // an SQL DESCRIBE function on the statement after the statement has been |
| 1447 | // prepared. |
| 1448 | // The value TRUE, X'F1' (CodePoint.TRUE), indicates an SQLDA is returned |
| 1449 | // The value FALSE, X'F0' (CodePoint.FALSE), default, indicates an SQLDA is not returned. |
| 1450 | // |
| 1451 | // preconditions: |
| 1452 | // sqlam must support this parameter for the command, method will not check. |
| 1453 | private void buildRTNSQLDA() throws SqlException { |
| 1454 | writeScalar1Byte(CodePoint.RTNSQLDA, CodePoint.TRUE); |
| 1455 | } |
| 1456 | |
| 1457 | // Type of SQL Descriptor Area. |
| 1458 | // This is a single byte signed number that specifies the type of sqlda to |
| 1459 | // return for the command. |
| 1460 | // below sqlam 7 there were two possible enumerated values for this parameter. |
| 1461 | // 0 (CodePoint.TYPSQLDA_STD_OUTPUT)- the default, indicates return the output sqlda. |
| 1462 | // 1 (CodePoint.TYPSQLDA_STD_INPUT) - indicates return the input sqlda. |
| 1463 | // the typsqlda was enhanced at sqlam 7 to support extened describe. |
| 1464 | // at sqlam 7 the following enumerated values are supported. |
| 1465 | // 0 (CodePoint.TYPSQLDA_STD_OUTPUT) - the default, standard output sqlda. |
| 1466 | // 1 (CodePoint.TYPSQLDA_STD_INPUT) - standard input sqlda. |
| 1467 | // 2 (CodePoint.TYPSQLDA_LIGHT_OUTPUT) - light output sqlda. |
| 1468 | // 3 (CodePoint.TYPSQLDA_LIGHT_INPUT) - light input sqlda. |
| 1469 | // 4 (CodePoint.TYPSQLDA_X_OUTPUT) - extended output sqlda. |
| 1470 | // 5 (CodePoint.TYPSQLDA_X_INPUT) - extended input sqlda. |
| 1471 | // |
| 1472 | // preconditions: |
| 1473 | // sqlam or prdid must support this, method will not check. |
| 1474 | // valid enumerated type must be passed to method, method will not check. |
| 1475 | private void buildTYPSQLDA(int typeSqlda) throws SqlException { |
| 1476 | // possibly inspect typeSqlda value and verify against sqlam level |
| 1477 | if (typeSqlda != CodePoint.TYPSQLDA_STD_OUTPUT) { |
| 1478 | writeScalar1Byte(CodePoint.TYPSQLDA, typeSqlda); |
| 1479 | } |
| 1480 | } |
| 1481 | |
| 1482 | /** |
| 1483 | * Build QRYCLSIMP (Query Close Implicit). Query Close Implicit |
| 1484 | * controls whether the target server implicitly closes a |
| 1485 | * non-scrollable query upon end of data (SQLSTATE 02000). |
| 1486 | */ |
| 1487 | private void buildQRYCLSIMP() { |
| 1488 | writeScalar1Byte(CodePoint.QRYCLSIMP, CodePoint.QRYCLSIMP_YES); |
| 1489 | } |
| 1490 | |
| 1491 | // helper method to buildFDODTA to build the actual data length |
| 1492 | private void setFDODTALobLength(int[][] protocolTypesAndLengths, int i, long dataLength) throws SqlException { |
| 1493 | if (protocolTypesAndLengths[i][1] == 0x8002) { |
| 1494 | writeShort((short) dataLength); |
| 1495 | } else if (protocolTypesAndLengths[i][1] == 0x8004) { |
| 1496 | writeInt((int) dataLength); // 4 bytes to encode the length |
| 1497 | } else if (protocolTypesAndLengths[i][1] == 0x8006)// 6 bytes to encode the length |
| 1498 | { |
| 1499 | writeLong(dataLength); |
| 1500 | } |
| 1501 | //throw new SqlException (netAgent_.logWriter_, "0x8006 lob place holders not yet supported"); |
| 1502 | else if (protocolTypesAndLengths[i][1] == 0x8008)// 8 bytes to encode the length |
| 1503 | { |
| 1504 | writeLong(dataLength); |
| 1505 | } |
| 1506 | |
| 1507 | if (dataLength != 0) { |
| 1508 | if (extdtaPositions_ == null) { |
| 1509 | extdtaPositions_ = new java.util.ArrayList(); |
| 1510 | } |
| 1511 | extdtaPositions_.add(new Integer(i)); |
| 1512 | } |
| 1513 | } |
| 1514 | |
| 1515 | private boolean checkSendQryrowset(int fetchSize, |
| 1516 | int resultSetType) { |
| 1517 | // if the cursor is forward_only, ignore the fetchSize and let the server return |
| 1518 | // as many rows as fit in the query block. |
| 1519 | // if the cursor is scrollable, send qryrowset if it is supported by the server |
| 1520 | boolean sendQryrowset = false; |
| 1521 | if (resultSetType != java.sql.ResultSet.TYPE_FORWARD_ONLY) { |
| 1522 | sendQryrowset = true; |
| 1523 | } |
| 1524 | return sendQryrowset; |
| 1525 | } |
| 1526 | |
| 1527 | private int checkFetchsize(int fetchSize, int resultSetType) { |
| 1528 | // if fetchSize is not set for scrollable cursors, set it to the default fetchSize |
| 1529 | if (resultSetType != java.sql.ResultSet.TYPE_FORWARD_ONLY && fetchSize == 0) { |
| 1530 | fetchSize = org.apache.derby.client.am.Configuration.defaultFetchSize; |
| 1531 | } |
| 1532 | return fetchSize; |
| 1533 | } |
| 1534 | |
| 1535 | private int calculateResultSetFlags() { |
| 1536 | return CodePoint.RSLSETFLG_EXTENDED_SQLDA; |
| 1537 | } |
| 1538 | |
| 1539 | public void writeSetSpecialRegister(java.util.ArrayList sqlsttList) throws SqlException { |
| 1540 | Section section = |
| 1541 | netAgent_.sectionManager_.getDynamicSection(java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT); |
| 1542 | |
| 1543 | buildEXCSQLSET(section); |
| 1544 | |
| 1545 | // SQLSTT: |
| 1546 | for (int i = 0; i < sqlsttList.size(); i++) { |
| 1547 | buildSQLSTTcommandData((String) sqlsttList.get(i)); |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | private int[][] allocateLidAndLengthsArray(ColumnMetaData parameterMetaData) { |
| 1552 | int numVars = parameterMetaData.columns_; |
| 1553 | int[][] lidAndLengths = parameterMetaData.protocolTypesCache_; |
| 1554 | if ((lidAndLengths) == null || (lidAndLengths.length != numVars)) { |
| 1555 | lidAndLengths = new int[numVars][2]; |
| 1556 | parameterMetaData.protocolTypesCache_ = lidAndLengths; |
| 1557 | } |
| 1558 | return lidAndLengths; |
| 1559 | } |
| 1560 | |
| 1561 | private void buildMddOverrides(java.util.ArrayList sdaOverrides) throws SqlException { |
| 1562 | byte[] mddBytes; |
| 1563 | for (int i = 0; i < sdaOverrides.size(); i++) { |
| 1564 | mddBytes = (byte[]) (sdaOverrides.get(i)); |
| 1565 | writeBytes(mddBytes); |
| 1566 | } |
| 1567 | } |
| 1568 | |
| 1569 | private int getNextOverrideLid() { |
| 1570 | return overrideLid_++; |
| 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | |