| 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 java.io.UnsupportedEncodingException; |
| 28 | import java.nio.ByteBuffer; |
| 29 | |
| 30 | import java.sql.SQLException; |
| 31 | |
| 32 | /** |
| 33 | * Buffer contains code to read and write packets from/to the MySQL server. |
| 34 | * |
| 35 | * @version $Id: ChannelBuffer.java 4054 2005-08-11 20:16:51Z mmatthews $ |
| 36 | * @author Mark Matthews |
| 37 | */ |
| 38 | class ChannelBuffer extends Buffer { |
| 39 | |
| 40 | private byte[] asBytes = null; |
| 41 | |
| 42 | // private int position = 0; |
| 43 | |
| 44 | private int bufLength = 0; |
| 45 | |
| 46 | private ByteBuffer directBuffer; |
| 47 | |
| 48 | private boolean dirty = true; |
| 49 | |
| 50 | ChannelBuffer(byte[] buf) { |
| 51 | this.directBuffer = ByteBuffer.wrap(buf); |
| 52 | setBufLength(buf.length); |
| 53 | } |
| 54 | |
| 55 | ChannelBuffer(int size, boolean direct) { |
| 56 | |
| 57 | if (direct) { |
| 58 | this.directBuffer = ByteBuffer.allocateDirect(size); |
| 59 | } else { |
| 60 | this.directBuffer = ByteBuffer.allocate(size); |
| 61 | } |
| 62 | |
| 63 | // this.directBuffer.limit(size); |
| 64 | setBufLength(size); |
| 65 | // this.position = MysqlIO.HEADER_LENGTH; |
| 66 | this.directBuffer.position(MysqlIO.HEADER_LENGTH); |
| 67 | } |
| 68 | |
| 69 | private byte[] bufferToArray() { |
| 70 | if (!this.dirty) { |
| 71 | return this.asBytes; |
| 72 | } else if (this.directBuffer.hasArray()) { |
| 73 | this.asBytes = this.directBuffer.array(); |
| 74 | this.dirty = false; |
| 75 | |
| 76 | return this.asBytes; |
| 77 | } else { |
| 78 | int bufferLength = this.directBuffer.limit(); |
| 79 | |
| 80 | this.asBytes = new byte[bufferLength]; |
| 81 | |
| 82 | int oldPosition = getPosition(); |
| 83 | |
| 84 | this.directBuffer.position(0); |
| 85 | this.directBuffer.get(this.asBytes, 0, bufferLength); |
| 86 | this.directBuffer.position(oldPosition); |
| 87 | this.dirty = false; |
| 88 | |
| 89 | return this.asBytes; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | final void clear() { |
| 94 | this.directBuffer.position(MysqlIO.HEADER_LENGTH); |
| 95 | } |
| 96 | |
| 97 | final void ensureCapacity(int additionalData) throws SQLException { |
| 98 | int bufferCapacity = this.directBuffer.capacity(); |
| 99 | |
| 100 | int currentPosition = this.directBuffer.position(); |
| 101 | |
| 102 | if ((currentPosition + additionalData) > getBufLength()) { |
| 103 | if ((currentPosition + additionalData) < bufferCapacity) { |
| 104 | // byteBuffer.length is != getBufLength() all of the time |
| 105 | // due to re-using of packets (we don't shrink them) |
| 106 | // |
| 107 | // If we can, don't re-alloc, just set buffer length |
| 108 | // to size of current buffer |
| 109 | setBufLength(currentPosition + additionalData); |
| 110 | } else { |
| 111 | // |
| 112 | // Otherwise, re-size, and pad so we can avoid |
| 113 | // allocing again in the near future |
| 114 | // |
| 115 | |
| 116 | int newLength = (int) (bufferCapacity * 1.25); |
| 117 | |
| 118 | if (newLength < 4096) { |
| 119 | newLength = 4096; |
| 120 | } |
| 121 | |
| 122 | if (newLength < (bufferCapacity + additionalData)) { |
| 123 | newLength = bufferCapacity + (int) (additionalData * 1.25); |
| 124 | } |
| 125 | |
| 126 | if (newLength < bufferCapacity) { |
| 127 | newLength = bufferCapacity + additionalData; |
| 128 | } |
| 129 | |
| 130 | ByteBuffer largerBuffer = ByteBuffer.allocateDirect(newLength); |
| 131 | |
| 132 | this.directBuffer.position(0); |
| 133 | largerBuffer.put(this.directBuffer); |
| 134 | this.directBuffer = largerBuffer; |
| 135 | this.directBuffer.position(currentPosition); |
| 136 | |
| 137 | bufferCapacity = this.directBuffer.capacity(); // re-alloc'd |
| 138 | setBufLength(bufferCapacity); |
| 139 | |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Skip over a length-encoded string |
| 146 | * |
| 147 | * @return The position past the end of the string |
| 148 | */ |
| 149 | public int fastSkipLenString() { |
| 150 | long len = this.readFieldLength(); |
| 151 | |
| 152 | // position += len; |
| 153 | |
| 154 | this.directBuffer.position((int) (this.directBuffer.position() + len)); |
| 155 | |
| 156 | return (int) len; // this is safe, as this is only |
| 157 | } |
| 158 | |
| 159 | int getBufLength() { |
| 160 | return this.directBuffer.limit(); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Returns the array of bytes this Buffer is using to read from. |
| 165 | * |
| 166 | * @return byte array being read from |
| 167 | */ |
| 168 | public byte[] getByteBuffer() { |
| 169 | return bufferToArray(); |
| 170 | } |
| 171 | |
| 172 | final byte[] getBytes(int len) { |
| 173 | byte[] b = new byte[len]; |
| 174 | byte[] nioByteBuffer = bufferToArray(); |
| 175 | |
| 176 | try { |
| 177 | |
| 178 | System.arraycopy(nioByteBuffer, this.directBuffer.position(), b, 0, |
| 179 | len); |
| 180 | // this.position += len; // update cursor |
| 181 | this.directBuffer.position((this.directBuffer.position() + len)); |
| 182 | } catch (ArrayIndexOutOfBoundsException aiobex) { |
| 183 | throw aiobex; |
| 184 | } |
| 185 | |
| 186 | return b; |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * (non-Javadoc) |
| 191 | * |
| 192 | * @see com.mysql.jdbc.Buffer#getBytes(int, int) |
| 193 | */ |
| 194 | byte[] getBytes(int offset, int len) { |
| 195 | byte[] b = new byte[len]; |
| 196 | byte[] nioByteBuffer = bufferToArray(); |
| 197 | |
| 198 | try { |
| 199 | |
| 200 | System.arraycopy(nioByteBuffer, offset, b, 0, len); |
| 201 | // this.position += len; // update cursor |
| 202 | this.directBuffer.position((offset + len)); |
| 203 | } catch (ArrayIndexOutOfBoundsException aiobex) { |
| 204 | throw aiobex; |
| 205 | } |
| 206 | |
| 207 | return b; |
| 208 | } |
| 209 | |
| 210 | int getCapacity() { |
| 211 | return this.directBuffer.capacity(); |
| 212 | } |
| 213 | |
| 214 | public ByteBuffer getNioBuffer() { |
| 215 | return this.directBuffer; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Returns the current position to write to/ read from |
| 220 | * |
| 221 | * @return the current position to write to/ read from |
| 222 | */ |
| 223 | public int getPosition() { |
| 224 | // if (directBuffer.position() != this.position) { |
| 225 | // System.err.println("WARN: directBuffer position != this.position"); |
| 226 | // } |
| 227 | |
| 228 | return this.directBuffer.position(); |
| 229 | } |
| 230 | |
| 231 | // 2000-06-05 Changed |
| 232 | final boolean isLastDataPacket() { |
| 233 | boolean hasMarker = ((this.directBuffer.get(0) & 0xff) == 254); |
| 234 | |
| 235 | return (hasMarker && this.bufLength < 9); |
| 236 | } |
| 237 | |
| 238 | final long newReadLength() { |
| 239 | int sw = this.directBuffer.get(this.directBuffer.position()) & 0xff; |
| 240 | this.directBuffer.position(this.directBuffer.position() + 1); |
| 241 | |
| 242 | switch (sw) { |
| 243 | case 251: |
| 244 | return 0; |
| 245 | |
| 246 | case 252: |
| 247 | return readInt(); |
| 248 | |
| 249 | case 253: |
| 250 | return readLongInt(); |
| 251 | |
| 252 | case 254: // changed for 64 bit lengths |
| 253 | return readLongLong(); |
| 254 | |
| 255 | default: |
| 256 | return sw; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | final byte readByte() { |
| 261 | byte b = this.directBuffer.get(); |
| 262 | |
| 263 | return b; |
| 264 | } |
| 265 | |
| 266 | final byte readByte(int readAt) { |
| 267 | return this.directBuffer.get(readAt); |
| 268 | } |
| 269 | |
| 270 | final long readFieldLength() { |
| 271 | int sw = this.directBuffer.get() & 0xff; |
| 272 | |
| 273 | switch (sw) { |
| 274 | case 251: |
| 275 | return NULL_LENGTH; |
| 276 | |
| 277 | case 252: |
| 278 | return readInt(); |
| 279 | |
| 280 | case 253: |
| 281 | return readLongInt(); |
| 282 | |
| 283 | case 254: |
| 284 | return readLongLong(); |
| 285 | |
| 286 | default: |
| 287 | return sw; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | final int readInt() { |
| 292 | return (this.directBuffer.get() & 0xff) |
| 293 | | ((this.directBuffer.get() & 0xff) << 8); |
| 294 | } |
| 295 | |
| 296 | final int readIntAsLong() { |
| 297 | int i = (this.directBuffer.get() & 0xff) |
| 298 | | ((this.directBuffer.get() & 0xff) << 8) |
| 299 | | ((this.directBuffer.get() & 0xff) << 16) |
| 300 | | ((this.directBuffer.get() & 0xff) << 24); |
| 301 | |
| 302 | // this.directBuffer.position(this.position); |
| 303 | |
| 304 | return i; |
| 305 | } |
| 306 | |
| 307 | final byte[] readLenByteArray(int offset) { |
| 308 | long len = this.readFieldLength(); |
| 309 | |
| 310 | if (len == NULL_LENGTH) { |
| 311 | return null; |
| 312 | } |
| 313 | |
| 314 | if (len == 0) { |
| 315 | return Constants.EMPTY_BYTE_ARRAY; |
| 316 | } |
| 317 | |
| 318 | this.directBuffer.position(this.directBuffer.position() + offset); |
| 319 | // this.directBuffer.position(this.position); |
| 320 | |
| 321 | return getBytes((int) len); |
| 322 | } |
| 323 | |
| 324 | final long readLength() { |
| 325 | int sw = this.directBuffer.get() & 0xff; |
| 326 | // this.directBuffer.position(this.position); |
| 327 | |
| 328 | switch (sw) { |
| 329 | case 251: |
| 330 | return 0; |
| 331 | |
| 332 | case 252: |
| 333 | return readInt(); |
| 334 | |
| 335 | case 253: |
| 336 | return readLongInt(); |
| 337 | |
| 338 | case 254: |
| 339 | return readLong(); |
| 340 | |
| 341 | default: |
| 342 | return sw; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | final long readLong() { |
| 347 | long l = ((long)this.directBuffer.get() & 0xff) |
| 348 | | (((long)this.directBuffer.get() & 0xff) << 8) |
| 349 | | (((long)this.directBuffer.get() & 0xff) << 16) |
| 350 | | (((long)this.directBuffer.get() & 0xff) << 24); |
| 351 | |
| 352 | // this.directBuffer.position(this.position); |
| 353 | |
| 354 | return l; |
| 355 | } |
| 356 | |
| 357 | final int readLongInt() { |
| 358 | |
| 359 | int i = (this.directBuffer.get() & 0xff) |
| 360 | | ((this.directBuffer.get() & 0xff) << 8) |
| 361 | | ((this.directBuffer.get() & 0xff) << 16); |
| 362 | |
| 363 | // this.directBuffer.position(this.position); |
| 364 | |
| 365 | return i; |
| 366 | } |
| 367 | |
| 368 | // 2000-06-05 Fixed |
| 369 | final long readLongLong() { |
| 370 | |
| 371 | long l = (this.directBuffer.get() & 0xff) |
| 372 | | ((long) (this.directBuffer.get() & 0xff) << 8) |
| 373 | | ((long) (this.directBuffer.get() & 0xff) << 16) |
| 374 | | ((long) (this.directBuffer.get() & 0xff) << 24) |
| 375 | | ((long) (this.directBuffer.get() & 0xff) << 32) |
| 376 | | ((long) (this.directBuffer.get() & 0xff) << 40) |
| 377 | | ((long) (this.directBuffer.get() & 0xff) << 48) |
| 378 | | ((long) (this.directBuffer.get() & 0xff) << 56); |
| 379 | |
| 380 | // this.directBuffer.position(this.position); |
| 381 | |
| 382 | return l; |
| 383 | } |
| 384 | |
| 385 | final int readnBytes() { |
| 386 | int sw = this.directBuffer.get() & 0xff; |
| 387 | // this.directBuffer.position(this.position); |
| 388 | |
| 389 | switch (sw) { |
| 390 | case 1: |
| 391 | return this.directBuffer.get() & 0xff; |
| 392 | |
| 393 | case 2: |
| 394 | return this.readInt(); |
| 395 | |
| 396 | case 3: |
| 397 | return this.readLongInt(); |
| 398 | |
| 399 | case 4: |
| 400 | return (int) this.readLong(); |
| 401 | |
| 402 | default: |
| 403 | return 255; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | // |
| 408 | // Read a null-terminated string |
| 409 | // |
| 410 | // To avoid alloc'ing a new byte array, we |
| 411 | // do this by hand, rather than calling getNullTerminatedBytes() |
| 412 | // |
| 413 | final String readString() { |
| 414 | |
| 415 | int len = 0; |
| 416 | int maxLen = getBufLength(); |
| 417 | int oldPosition = getPosition(); |
| 418 | |
| 419 | while ((getPosition() < maxLen) && (this.directBuffer.get() != 0)) { |
| 420 | len++; |
| 421 | } |
| 422 | |
| 423 | setPosition(oldPosition); |
| 424 | |
| 425 | String s = new String(bufferToArray(), getPosition(), len); |
| 426 | |
| 427 | this.directBuffer.position(getPosition() + len + 1); // update cursor |
| 428 | |
| 429 | return s; |
| 430 | } |
| 431 | |
| 432 | final String readString(String encoding) throws SQLException { |
| 433 | |
| 434 | int len = 0; |
| 435 | |
| 436 | int maxLen = getBufLength(); |
| 437 | |
| 438 | while ((getPosition() < maxLen) && (this.directBuffer.get() != 0)) { |
| 439 | len++; |
| 440 | } |
| 441 | |
| 442 | try { |
| 443 | return new String(bufferToArray(), getPosition(), len, encoding); |
| 444 | } catch (UnsupportedEncodingException uEE) { |
| 445 | throw new SQLException( |
| 446 | Messages.getString("ChannelBuffer.0") //$NON-NLS-1$ |
| 447 | + encoding + Messages.getString("ChannelBuffer.1"), SQLError.SQL_STATE_ILLEGAL_ARGUMENT); //$NON-NLS-1$ |
| 448 | } finally { |
| 449 | this.directBuffer.position(getPosition() + len + 1); // update |
| 450 | // cursor |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | void setBufLength(int bufLengthToSet) { |
| 455 | this.bufLength = bufLengthToSet; |
| 456 | this.directBuffer.limit(this.bufLength); |
| 457 | this.dirty = true; |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Sets the array of bytes to use as a buffer to read from. |
| 462 | * |
| 463 | * @param byteBuffer |
| 464 | * the array of bytes to use as a buffer |
| 465 | */ |
| 466 | public void setByteBuffer(byte[] byteBuffer) { |
| 467 | this.directBuffer = ByteBuffer.wrap(byteBuffer); |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * Set the current position to write to/ read from |
| 472 | * |
| 473 | * @param position |
| 474 | * the position (0-based index) |
| 475 | */ |
| 476 | public void setPosition(int position) { |
| 477 | // this.position = position; |
| 478 | this.directBuffer.position(position); |
| 479 | } |
| 480 | |
| 481 | final void writeByte(byte b) throws SQLException { |
| 482 | ensureCapacity(1); |
| 483 | |
| 484 | this.directBuffer.put(b); |
| 485 | this.dirty = true; |
| 486 | } |
| 487 | |
| 488 | // Write a byte array |
| 489 | final void writeBytesNoNull(byte[] bytes) throws SQLException { |
| 490 | int len = bytes.length; |
| 491 | ensureCapacity(len); |
| 492 | |
| 493 | this.directBuffer.put(bytes, 0, len); |
| 494 | this.dirty = true; |
| 495 | } |
| 496 | |
| 497 | // Write a byte array with the given offset and length |
| 498 | final void writeBytesNoNull(byte[] bytes, int offset, int length) |
| 499 | throws SQLException { |
| 500 | ensureCapacity(length); |
| 501 | |
| 502 | this.directBuffer.put(bytes, offset, length); |
| 503 | |
| 504 | this.dirty = true; |
| 505 | } |
| 506 | |
| 507 | final void writeDouble(double d) throws SQLException { |
| 508 | long l = Double.doubleToLongBits(d); |
| 509 | writeLongLong(l); |
| 510 | this.dirty = true; |
| 511 | } |
| 512 | |
| 513 | final void writeFieldLength(long length) throws SQLException { |
| 514 | if (length < 251) { |
| 515 | writeByte((byte) length); |
| 516 | } else if (length < 65536L) { |
| 517 | ensureCapacity(3); |
| 518 | writeByte((byte) 252); |
| 519 | writeInt((int) length); |
| 520 | } else if (length < 16777216L) { |
| 521 | ensureCapacity(4); |
| 522 | writeByte((byte) 253); |
| 523 | writeLongInt((int) length); |
| 524 | } else { |
| 525 | ensureCapacity(9); |
| 526 | writeByte((byte) 254); |
| 527 | writeLongLong(length); |
| 528 | } |
| 529 | |
| 530 | } |
| 531 | |
| 532 | final void writeFloat(float f) throws SQLException { |
| 533 | ensureCapacity(4); |
| 534 | |
| 535 | int i = Float.floatToIntBits(f); |
| 536 | |
| 537 | this.directBuffer.put((byte) (i & 0xff)); |
| 538 | this.directBuffer.put((byte) (i >>> 8)); |
| 539 | this.directBuffer.put((byte) (i >>> 16)); |
| 540 | this.directBuffer.put((byte) (i >>> 24)); |
| 541 | |
| 542 | this.dirty = true; |
| 543 | } |
| 544 | |
| 545 | // 2000-06-05 Changed |
| 546 | final void writeInt(int i) throws SQLException { |
| 547 | ensureCapacity(2); |
| 548 | this.directBuffer.put((byte) (i & 0xff)); |
| 549 | this.directBuffer.put((byte) (i >>> 8)); |
| 550 | |
| 551 | this.dirty = true; |
| 552 | } |
| 553 | |
| 554 | // Write a String using the specified character |
| 555 | // encoding |
| 556 | final void writeLenBytes(byte[] b) throws SQLException { |
| 557 | int len = b.length; |
| 558 | ensureCapacity(len + 9); |
| 559 | writeFieldLength(len); |
| 560 | this.directBuffer.put(b, 0, len); |
| 561 | |
| 562 | this.dirty = true; |
| 563 | } |
| 564 | |
| 565 | // Write a String using the specified character |
| 566 | // encoding |
| 567 | final void writeLenString(String s, String encoding, String serverEncoding, |
| 568 | SingleByteCharsetConverter converter, boolean parserKnowsUnicode) |
| 569 | throws UnsupportedEncodingException, SQLException { |
| 570 | byte[] b = null; |
| 571 | |
| 572 | if (converter != null) { |
| 573 | b = converter.toBytes(s); |
| 574 | } else { |
| 575 | b = StringUtils.getBytes(s, encoding, serverEncoding, |
| 576 | parserKnowsUnicode); |
| 577 | } |
| 578 | |
| 579 | int len = b.length; |
| 580 | ensureCapacity(len + 9); |
| 581 | writeFieldLength(len); |
| 582 | this.directBuffer.put(b, 0, len); |
| 583 | |
| 584 | this.dirty = true; |
| 585 | } |
| 586 | |
| 587 | // 2000-06-05 Changed |
| 588 | final void writeLong(long i) throws SQLException { |
| 589 | ensureCapacity(4); |
| 590 | |
| 591 | this.directBuffer.put((byte) (i & 0xff)); |
| 592 | this.directBuffer.put((byte) (i >>> 8)); |
| 593 | this.directBuffer.put((byte) (i >>> 16)); |
| 594 | this.directBuffer.put((byte) (i >>> 24)); |
| 595 | |
| 596 | this.dirty = true; |
| 597 | } |
| 598 | |
| 599 | // 2000-06-05 Changed |
| 600 | final void writeLongInt(int i) throws SQLException { |
| 601 | ensureCapacity(3); |
| 602 | |
| 603 | this.directBuffer.put((byte) (i & 0xff)); |
| 604 | this.directBuffer.put((byte) (i >>> 8)); |
| 605 | this.directBuffer.put((byte) (i >>> 16)); |
| 606 | |
| 607 | this.dirty = true; |
| 608 | } |
| 609 | |
| 610 | final void writeLongLong(long i) throws SQLException { |
| 611 | ensureCapacity(8); |
| 612 | |
| 613 | this.directBuffer.put((byte) (i & 0xff)); |
| 614 | this.directBuffer.put((byte) (i >>> 8)); |
| 615 | this.directBuffer.put((byte) (i >>> 16)); |
| 616 | this.directBuffer.put((byte) (i >>> 24)); |
| 617 | this.directBuffer.put((byte) (i >>> 32)); |
| 618 | this.directBuffer.put((byte) (i >>> 40)); |
| 619 | this.directBuffer.put((byte) (i >>> 48)); |
| 620 | this.directBuffer.put((byte) (i >>> 56)); |
| 621 | |
| 622 | this.dirty = true; |
| 623 | } |
| 624 | |
| 625 | // Write null-terminated string |
| 626 | final void writeString(String s) throws SQLException { |
| 627 | ensureCapacity((s.length() * 2) + 1); |
| 628 | |
| 629 | writeStringNoNull(s); |
| 630 | this.directBuffer.put((byte) 0); |
| 631 | |
| 632 | this.dirty = true; |
| 633 | } |
| 634 | |
| 635 | // Write string, with no termination |
| 636 | final void writeStringNoNull(String s) throws SQLException { |
| 637 | int len = s.length(); |
| 638 | ensureCapacity(len * 2); |
| 639 | |
| 640 | this.directBuffer.put(s.getBytes(), 0, len); |
| 641 | |
| 642 | this.dirty = true; |
| 643 | } |
| 644 | |
| 645 | // Write a String using the specified character |
| 646 | // encoding |
| 647 | final void writeStringNoNull(String s, String encoding, |
| 648 | String serverEncoding, boolean parserKnowsUnicode) |
| 649 | throws UnsupportedEncodingException, SQLException { |
| 650 | byte[] b = StringUtils.getBytes(s, encoding, serverEncoding, |
| 651 | parserKnowsUnicode); |
| 652 | |
| 653 | int len = b.length; |
| 654 | ensureCapacity(len); |
| 655 | |
| 656 | this.directBuffer.put(b, 0, len); |
| 657 | |
| 658 | this.dirty = true; |
| 659 | } |
| 660 | } |