libjava/java/sql/ResultSet.java

   1 /* ResultSet.java -- A SQL statement result set.
   2    Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.sql;
  40
  41 import java.io.InputStream;
  42 import java.io.Reader;
  43 import java.math.BigDecimal;
  44 import java.net.URL;
  45 import java.util.Calendar;
  46 import java.util.Map;
  47
  48 /**
  49  * This interface provides access to the data set returned by a SQL
  50  * statement.  An instance of this interface is returned by the various
  51  * execution methods in the <code>Statement</code.
  52  * <p>
  53  * This class models a cursor, which can be stepped through one row at a
  54  * time.  Methods are provided for accessing columns by column name or by
  55  * index.
  56  * <p>
  57  * Note that a result set is invalidated if the statement that returned
  58  * it is closed.
  59  *
  60  * @author Aaron M. Renn (arenn@urbanophile.com)
  61  */
  62 public interface ResultSet
  63 {
  64   /**
  65    * The rows will be processed in order from first to last.
  66    */
  67   int FETCH_FORWARD = 1000;
  68
  69   /**
  70    * The rows will be processed in order from last to first.
  71    */
  72   int FETCH_REVERSE = 1001;
  73
  74   /**
  75    * The rows will be processed in an unknown order
  76    */
  77   int FETCH_UNKNOWN = 1002;
  78
  79   /**
  80    * This type of result set may only step forward through the rows returned.
  81    */
  82   int TYPE_FORWARD_ONLY = 1003;
  83
  84   /**
  85    * This type of result set is scrollable and is not sensitive to changes
  86    * made by other statements.
  87    */
  88   int TYPE_SCROLL_INSENSITIVE = 1004;
  89
  90   /**
  91    * This type of result set is scrollable and is also sensitive to changes
  92    * made by other statements.
  93    */
  94   int TYPE_SCROLL_SENSITIVE = 1005;
  95
  96   /**
  97    * The concurrency mode of for the result set may not be modified.
  98    */
  99   int CONCUR_READ_ONLY = 1007;
 100
 101   /**
 102    * The concurrency mode of for the result set may be modified.
 103    */
 104   int CONCUR_UPDATABLE = 1008;
 105
 106   int HOLD_CURSORS_OVER_COMMIT = 1;
 107
 108   int CLOSE_CURSORS_AT_COMMIT = 2;
 109
 110   /**
 111    * This method advances to the next row in the result set.  Any streams
 112    * open on the current row are closed automatically.
 113    *
 114    * @return <code>true</code> if the next row exists, <code>false</code>
 115    *         otherwise.
 116    * @exception SQLException If an error occurs.
 117    */
 118   boolean next() throws SQLException;
 119
 120   /**
 121    * This method closes the result set and frees any associated resources.
 122    *
 123    * @exception SQLException If an error occurs.
 124    */
 125   void close() throws SQLException;
 126
 127   /**
 128    * This method tests whether the value of the last column that was fetched
 129    * was actually a SQL NULL value.
 130    *
 131    * @return <code>true</code> if the last column fetched was a NULL,
 132    *         <code>false</code> otherwise.
 133    * @exception SQLException If an error occurs.
 134    */
 135   boolean wasNull() throws SQLException;
 136
 137   /**
 138    * This method returns the value of the specified column as a Java
 139    * <code>String</code>.
 140    *
 141    * @param index The index of the column to return.
 142    * @return The column value as a <code>String</code>.
 143    * @exception SQLException If an error occurs.
 144    */
 145   String getString(int columnIndex) throws SQLException;
 146
 147   /**
 148    * This method returns the value of the specified column as a Java
 149    * <code>boolean</code>.
 150    *
 151    * @param index The index of the column to return.
 152    * @return The column value as a <code>boolean</code>.
 153    * @exception SQLException If an error occurs.
 154    */
 155   boolean getBoolean(int columnIndex) throws SQLException;
 156
 157   /**
 158    * This method returns the value of the specified column as a Java
 159    * <code>byte</code>.
 160    *
 161    * @param index The index of the column to return.
 162    * @return The column value as a <code>byte</code>.
 163    * @exception SQLException If an error occurs.
 164    */
 165   byte getByte(int columnIndex) throws SQLException;
 166
 167   /**
 168    * This method returns the value of the specified column as a Java
 169    * <code>short</code>.
 170    *
 171    * @param index The index of the column to return.
 172    * @return The column value as a <code>short</code>.
 173    * @exception SQLException If an error occurs.
 174    */
 175   short getShort(int columnIndex) throws SQLException;
 176
 177   /**
 178    * This method returns the value of the specified column as a Java
 179    * <code>int</code>.
 180    *
 181    * @param index The index of the column to return.
 182    * @return The column value as a <code>int</code>.
 183    * @exception SQLException If an error occurs.
 184    */
 185   int getInt(int columnIndex) throws SQLException;
 186
 187   /**
 188    * This method returns the value of the specified column as a Java
 189    * <code>long</code>.
 190    *
 191    * @param index The index of the column to return.
 192    * @return The column value as a <code>long</code>.
 193    * @exception SQLException If an error occurs.
 194    */
 195   long getLong(int columnIndex) throws SQLException;
 196
 197   /**
 198    * This method returns the value of the specified column as a Java
 199    * <code>float</code>.
 200    *
 201    * @param index The index of the column to return.
 202    * @return The column value as a <code>float</code>.
 203    * @exception SQLException If an error occurs.
 204    */
 205   float getFloat(int columnIndex) throws SQLException;
 206
 207   /**
 208    * This method returns the value of the specified column as a Java
 209    * <code>double</code>.
 210    *
 211    * @param index The index of the column to return.
 212    * @return The column value as a <code>double</code>.
 213    * @exception SQLException If an error occurs.
 214    */
 215   double getDouble(int columnIndex) throws SQLException;
 216
 217   /**
 218    * This method returns the value of the specified column as a Java
 219    * <code>BigDecimal</code>.
 220    *
 221    * @param index The index of the column to return.
 222    * @param scale The number of digits to the right of the decimal to return.
 223    * @return The column value as a <code>BigDecimal</code>.
 224    * @exception SQLException If an error occurs.
 225    * @deprecated
 226    */
 227   BigDecimal getBigDecimal(int columnIndex, int scale)
 228     throws SQLException;
 229
 230   /**
 231    * This method returns the value of the specified column as a Java
 232    * byte array.
 233    *
 234    * @param index The index of the column to return.
 235    * @return The column value as a byte array
 236    * @exception SQLException If an error occurs.
 237    */
 238   byte[] getBytes(int columnIndex) throws SQLException;
 239
 240   /**
 241    * This method returns the value of the specified column as a Java
 242    * <code>java.sql.Date</code>.
 243    *
 244    * @param index The index of the column to return.
 245    * @return The column value as a <code>java.sql.Date</code>.
 246    * @exception SQLException If an error occurs.
 247    */
 248   Date getDate(int columnIndex) throws SQLException;
 249
 250   /**
 251    * This method returns the value of the specified column as a Java
 252    * <code>java.sql.Time</code>.
 253    *
 254    * @param index The index of the column to return.
 255    * @return The column value as a <code>java.sql.Time</code>.
 256    * @exception SQLException If an error occurs.
 257    */
 258   Time getTime(int columnIndex) throws SQLException;
 259
 260   /**
 261    * This method returns the value of the specified column as a Java
 262    * <code>java.sql.Timestamp</code>.
 263    *
 264    * @param index The index of the column to return.
 265    * @return The column value as a <code>java.sql.Timestamp</code>.
 266    * @exception SQLException If an error occurs.
 267    */
 268   Timestamp getTimestamp(int columnIndex) throws SQLException;
 269
 270   /**
 271    * This method returns the value of the specified column as an ASCII
 272    * stream.  Note that all the data from this stream must be read before
 273    * fetching the value of any other column.  Please also be aware that
 274    * calling <code>next()</code> or <code>close()</code> on this result set
 275    * will close this stream as well.
 276    *
 277    * @param index The index of the column to return.
 278    * @return The column value as an ASCII <code>InputStream</code>.
 279    * @exception SQLException If an error occurs.
 280    */
 281   InputStream getAsciiStream(int columnIndex) throws SQLException;
 282
 283   /**
 284    * This method returns the value of the specified column as a Unicode UTF-8
 285    * stream.  Note that all the data from this stream must be read before
 286    * fetching the value of any other column.  Please also be aware that
 287    * calling <code>next()</code> or <code>close()</code> on this result set
 288    * will close this stream as well.
 289    *
 290    * @param index The index of the column to return.
 291    * @return The column value as a Unicode UTF-8 <code>InputStream</code>.
 292    * @exception SQLException If an error occurs.
 293    * @deprecated Use getCharacterStream instead.
 294    */
 295   InputStream getUnicodeStream(int columnIndex) throws SQLException;
 296
 297   /**
 298    * This method returns the value of the specified column as a raw byte
 299    * stream.  Note that all the data from this stream must be read before
 300    * fetching the value of any other column.  Please also be aware that
 301    * calling <code>next()</code> or <code>close()</code> on this result set
 302    * will close this stream as well.
 303    *
 304    * @param index The index of the column to return.
 305    * @return The column value as a raw byte <code>InputStream</code>.
 306    * @exception SQLException If an error occurs.
 307    */
 308   InputStream getBinaryStream(int columnIndex) throws SQLException;
 309
 310   /**
 311    * This method returns the value of the specified column as a Java
 312    * <code>String</code>.
 313    *
 314    * @param column The name of the column to return.
 315    * @return The column value as a <code>String</code>.
 316    * @exception SQLException If an error occurs.
 317    */
 318   String getString(String columnName) throws SQLException;
 319
 320   /**
 321    * This method returns the value of the specified column as a Java
 322    * <code>boolean</code>.
 323    *
 324    * @param column The name of the column to return.
 325    * @return The column value as a <code>boolean</code>.
 326    * @exception SQLException If an error occurs.
 327    */
 328   boolean getBoolean(String columnName) throws SQLException;
 329
 330   /**
 331    * This method returns the value of the specified column as a Java
 332    * <code>byte</code>.
 333    *
 334    * @param column The name of the column to return.
 335    * @return The column value as a <code>byte</code>.
 336    * @exception SQLException If an error occurs.
 337    */
 338   byte getByte(String columnName) throws SQLException;
 339
 340   /**
 341    * This method returns the value of the specified column as a Java
 342    * <code>short</code>.
 343    *
 344    * @param column The name of the column to return.
 345    * @return The column value as a <code>short</code>.
 346    * @exception SQLException If an error occurs.
 347    */
 348   short getShort(String columnName) throws SQLException;
 349
 350   /**
 351    * This method returns the value of the specified column as a Java
 352    * <code>int</code>.
 353    *
 354    * @param column The name of the column to return.
 355    * @return The column value as a <code>int</code>.
 356    * @exception SQLException If an error occurs.
 357    */
 358   int getInt(String columnName) throws SQLException;
 359
 360   /**
 361    * This method returns the value of the specified column as a Java
 362    * <code>long</code>.
 363    *
 364    * @param column The name of the column to return.
 365    * @return The column value as a <code>long</code>.
 366    * @exception SQLException If an error occurs.
 367    */
 368   long getLong(String columnName) throws SQLException;
 369
 370   /**
 371    * This method returns the value of the specified column as a Java
 372    * <code>float</code>.
 373    *
 374    * @param column The name of the column to return.
 375    * @return The column value as a <code>float</code>.
 376    * @exception SQLException If an error occurs.
 377    */
 378   float getFloat(String columnName) throws SQLException;
 379
 380   /**
 381    * This method returns the value of the specified column as a Java
 382    * <code>double</code>.
 383    *
 384    * @param column The name of the column to return.
 385    * @return The column value as a <code>double</code>.
 386    * @exception SQLException If an error occurs.
 387    */
 388   double getDouble(String columnName) throws SQLException;
 389
 390   /**
 391    * This method returns the value of the specified column as a Java
 392    * <code>BigDecimal</code>.
 393    *
 394    * @param index The index of the column to return.
 395    * @return The column value as a <code>BigDecimal</code>.
 396    * @exception SQLException If an error occurs.
 397    * @deprecated
 398    */
 399   BigDecimal getBigDecimal(String columnName, int scale)
 400     throws SQLException;
 401
 402   /**
 403    * This method returns the value of the specified column as a Java
 404    * byte array.
 405    *
 406    * @param column The name of the column to return.
 407    * @return The column value as a byte array
 408    * @exception SQLException If an error occurs.
 409    */
 410   byte[] getBytes(String columnName) throws SQLException;
 411
 412   /**
 413    * This method returns the value of the specified column as a Java
 414    * <code>java.sql.Date</code>.
 415    *
 416    * @param column The name of the column to return.
 417    * @return The column value as a <code>java.sql.Date</code>.
 418    * @exception SQLException If an error occurs.
 419    */
 420   Date getDate(String columnName) throws SQLException;
 421
 422   /**
 423    * This method returns the value of the specified column as a Java
 424    * <code>java.sql.Time</code>.
 425    *
 426    * @param column The name of the column to return.
 427    * @return The column value as a <code>java.sql.Time</code>.
 428    * @exception SQLException If an error occurs.
 429    */
 430   Time getTime(String columnName) throws SQLException;
 431
 432   /**
 433    * This method returns the value of the specified column as a Java
 434    * <code>java.sql.Timestamp</code>.
 435    *
 436    * @param column The name of the column to return.
 437    * @return The column value as a <code>java.sql.Timestamp</code>.
 438    * @exception SQLException If an error occurs.
 439    */
 440   Timestamp getTimestamp(String columnName) throws SQLException;
 441
 442   /**
 443    * This method returns the value of the specified column as an ASCII
 444    * stream.  Note that all the data from this stream must be read before
 445    * fetching the value of any other column.  Please also be aware that
 446    * calling <code>next()</code> or <code>close()</code> on this result set
 447    * will close this stream as well.
 448    *
 449    * @param column The name of the column to return.
 450    * @return The column value as an ASCII <code>InputStream</code>.
 451    * @exception SQLException If an error occurs.
 452    */
 453   InputStream getAsciiStream(String columnName) throws SQLException;
 454
 455   /**
 456    * This method returns the value of the specified column as a Unicode UTF-8
 457    * stream.  Note that all the data from this stream must be read before
 458    * fetching the value of any other column.  Please also be aware that
 459    * calling <code>next()</code> or <code>close()</code> on this result set
 460    * will close this stream as well.
 461    *
 462    * @param column The name of the column to return.
 463    * @return The column value as a Unicode UTF-8 <code>InputStream</code>.
 464    * @exception SQLException If an error occurs.
 465    * @deprecated Use getCharacterStream instead.
 466    */
 467   InputStream getUnicodeStream(String columnName) throws SQLException;
 468
 469   /**
 470    * This method returns the value of the specified column as a raw byte
 471    * stream.  Note that all the data from this stream must be read before
 472    * fetching the value of any other column.  Please also be aware that
 473    * calling <code>next()</code> or <code>close()</code> on this result set
 474    * will close this stream as well.
 475    *
 476    * @param column The name of the column to return.
 477    * @return The column value as a raw byte <code>InputStream</code>.
 478    * @exception SQLException If an error occurs.
 479    */
 480   InputStream getBinaryStream(String columnName) throws SQLException;
 481
 482   /**
 483    * This method returns the first SQL warning associated with this result
 484    * set.  Any additional warnings will be chained to this one.
 485    *
 486    * @return The first SQLWarning for this result set, or <code>null</code> if
 487    *         there are no warnings.
 488    * @exception SQLException If an error occurs.
 489    */
 490   SQLWarning getWarnings() throws SQLException;
 491
 492   /**
 493    * This method clears all warnings associated with this result set.
 494    *
 495    * @exception SQLException If an error occurs.
 496    */
 497   void clearWarnings() throws SQLException;
 498
 499   /**
 500    * This method returns the name of the database cursor used by this
 501    * result set.
 502    *
 503    * @return The name of the database cursor used by this result set.
 504    * @exception SQLException If an error occurs.
 505    */
 506   String getCursorName() throws SQLException;
 507
 508   /**
 509    * This method returns data about the columns returned as part of the
 510    * result set as a <code>ResultSetMetaData</code> instance.
 511    *
 512    * @return The <code>ResultSetMetaData</code> instance for this result set.
 513    * @exception SQLException If an error occurs.
 514    */
 515   ResultSetMetaData getMetaData() throws SQLException;
 516
 517   /**
 518    * This method returns the value of the specified column as a Java
 519    * <code>Object</code>.
 520    *
 521    * @param index The index of the column to return.
 522    * @return The column value as an <code>Object</code>.
 523    * @exception SQLException If an error occurs.
 524    */
 525   Object getObject(int columnIndex) throws SQLException;
 526
 527   /**
 528    * This method returns the value of the specified column as a Java
 529    * <code>Object</code>.
 530    *
 531    * @param column The name of the column to return.
 532    * @return The column value as an <code>Object</code>.
 533    * @exception SQLException If an error occurs.
 534    */
 535   Object getObject(String columnName) throws SQLException;
 536
 537   /**
 538    * This method returns the column index of the specified named column.
 539    *
 540    * @param column The name of the column.
 541    * @return The index of the column.
 542    * @exception SQLException If an error occurs.
 543    */
 544   int findColumn(String columnName) throws SQLException;
 545
 546   /**
 547    * This method returns the value of the specified column as a character
 548    * stream.  Note that all the data from this stream must be read before
 549    * fetching the value of any other column.  Please also be aware that
 550    * calling <code>next()</code> or <code>close()</code> on this result set
 551    * will close this stream as well.
 552    *
 553    * @param index The index of the column to return.
 554    * @return The column value as an character <code>Reader</code>.
 555    * @exception SQLException If an error occurs.
 556    */
 557   Reader getCharacterStream(int columnIndex) throws SQLException;
 558
 559   /**
 560    * This method returns the value of the specified column as a character
 561    * stream.  Note that all the data from this stream must be read before
 562    * fetching the value of any other column.  Please also be aware that
 563    * calling <code>next()</code> or <code>close()</code> on this result set
 564    * will close this stream as well.
 565    *
 566    * @param column The name of the column to return.
 567    * @return The column value as an character <code>Reader</code>.
 568    * @exception SQLException If an error occurs.
 569    */
 570   Reader getCharacterStream(String columnName) throws SQLException;
 571
 572   /**
 573    * This method returns the value of the specified column as a Java
 574    * <code>BigDecimal</code>.
 575    *
 576    * @param index The index of the column to return.
 577    * @return The column value as a <code>BigDecimal</code>.
 578    * @exception SQLException If an error occurs.
 579    */
 580   BigDecimal getBigDecimal(int columnIndex) throws SQLException;
 581
 582   /**
 583    * This method returns the value of the specified column as a Java
 584    * <code>BigDecimal</code>.
 585    *
 586    * @param column The name of the column to return.
 587    * @return The column value as a <code>BigDecimal</code>.
 588    * @exception SQLException If an error occurs.
 589    */
 590   BigDecimal getBigDecimal(String columnName) throws SQLException;
 591
 592   /**
 593    * This method tests whether or not the cursor is before the first row
 594    * in the result set.
 595    *
 596    * @return <code>true</code> if the cursor is positioned before the first
 597    *         row, <code>false</code> otherwise.
 598    * @exception SQLException If an error occurs.
 599    */
 600   boolean isBeforeFirst() throws SQLException;
 601
 602   /**
 603    * This method tests whether or not the cursor is after the last row
 604    * in the result set.
 605    *
 606    * @return <code>true</code> if the cursor is positioned after the last
 607    *         row, <code>false</code> otherwise.
 608    * @exception SQLException If an error occurs.
 609    */
 610   boolean isAfterLast() throws SQLException;
 611
 612   /**
 613    * This method tests whether or not the cursor is positioned on the first
 614    * row in the result set.
 615    *
 616    * @return <code>true</code> if the cursor is positioned on the first
 617    *         row, <code>false</code> otherwise.
 618    * @exception SQLException If an error occurs.
 619    */
 620   boolean isFirst() throws SQLException;
 621
 622   /**
 623    * This method tests whether or not the cursor is on the last row
 624    * in the result set.
 625    *
 626    * @return <code>true</code> if the cursor is positioned on the last
 627    *         row, <code>false</code> otherwise.
 628    * @exception SQLException If an error occurs.
 629    */
 630   boolean isLast() throws SQLException;
 631
 632   /**
 633    * This method repositions the cursor to before the first row in the
 634    * result set.
 635    *
 636    * @exception SQLException If an error occurs.
 637    */
 638   void beforeFirst() throws SQLException;
 639
 640   /**
 641    * This method repositions the cursor to after the last row in the result
 642    * set.
 643    *
 644    * @exception SQLException If an error occurs.
 645    */
 646   void afterLast() throws SQLException;
 647
 648   /**
 649    * This method repositions the cursor on the first row in the
 650    * result set.
 651    *
 652    * @return <code>true</code> if the cursor is on a valid row;
 653    *         <code>false</code> if there are no rows in the result set.
 654    * @exception SQLException If an error occurs.
 655    */
 656   boolean first() throws SQLException;
 657
 658   /**
 659    * This method repositions the cursor on the last row in the result
 660    * set.
 661    *
 662    * @return <code>true</code> if the cursor is on a valid row;
 663    *         <code>false</code> if there are no rows in the result set.
 664    * @exception SQLException If an error occurs.
 665    */
 666   boolean last() throws SQLException;
 667
 668   /**
 669    * This method returns the current row number in the cursor.  Numbering
 670    * begins at index 1.
 671    *
 672    * @return The current row number, or 0 if there is not current row.
 673    * @exception SQLException If an error occurs.
 674    */
 675   int getRow() throws SQLException;
 676
 677   /**
 678    * This method positions the result set to the specified absolute row.
 679    * Positive numbers are row offsets from the beginning of the result
 680    * set (numbering starts from row 1) and negative numbers are row offsets
 681    * from the end of the result set (numbering starts from -1).
 682    *
 683    * @param row The row to position the result set to.
 684    *
 685    * @return <code>true</code> if the current position was changed,
 686    *         <code>false</code> otherwise.
 687    * @exception SQLException If an error occurs.
 688    */
 689   boolean absolute(int row) throws SQLException;
 690
 691   /**
 692    * This method moves the result set position relative to the current row.
 693    * The offset can be positive or negative.
 694    *
 695    * @param row The relative row position to move to.
 696    * @return <code>true</code> if the current position was changed,
 697    *         <code>false</code> otherwise.
 698    * @exception SQLException If an error occurs.
 699    */
 700   boolean relative(int rows) throws SQLException;
 701
 702   /**
 703    * This method moves the current position to the previous row in the
 704    * result set.
 705    *
 706    * @return <code>true</code> if the previous row exists, <code>false</code>
 707    *         otherwise.
 708    * @exception SQLException If an error occurs.
 709    */
 710   boolean previous() throws SQLException;
 711
 712   /**
 713    * This method provides a hint to the driver about which direction the
 714    * result set will be processed in.
 715    *
 716    * @param direction The direction in which rows will be processed. (Values?)
 717    * @exception SQLException If an error occurs.
 718    */
 719   void setFetchDirection(int direction) throws SQLException;
 720
 721   /**
 722    * This method returns the current fetch direction for this result set.
 723    *
 724    * @return The fetch direction for this result set.
 725    * @exception SQLException If an error occurs.
 726    */
 727   int getFetchDirection() throws SQLException;
 728
 729   /**
 730    * This method provides a hint to the driver about how many rows at a
 731    * time it should fetch from the database.
 732    *
 733    * @param rows The number of rows the driver should fetch per call.
 734    * @exception SQLException If an error occurs.
 735    */
 736   void setFetchSize(int rows) throws SQLException;
 737
 738   /**
 739    * This method returns the current number of rows that will be fetched
 740    * from the database at a time.
 741    *
 742    * @return The current fetch size for this result set.
 743    * @exception SQLException If an error occurs.
 744    */
 745   int getFetchSize() throws SQLException;
 746
 747   /**
 748    * This method returns the result set type of this result set.  This will
 749    * be one of the TYPE_* constants defined in this interface.
 750    *
 751    * @return The result set type.
 752    * @exception SQLException If an error occurs.
 753    */
 754   int getType() throws SQLException;
 755
 756   /**
 757    * This method returns the concurrency type of this result set.  This will
 758    * be one of the CONCUR_* constants defined in this interface.
 759    *
 760    * @return The result set concurrency type.
 761    * @exception SQLException If an error occurs.
 762    */
 763   int getConcurrency() throws SQLException;
 764
 765   /**
 766    * This method tests whether or not the current row in the result set
 767    * has been updated.  Updates must be visible in order of this method to
 768    * detect the update.
 769    *
 770    * @return <code>true</code> if the row has been updated, <code>false</code>
 771    *         otherwise.
 772    * @exception SQLException If an error occurs.
 773    */
 774   boolean rowUpdated() throws SQLException;
 775
 776   /**
 777    * This method tests whether or not the current row in the result set
 778    * has been inserted.  Inserts must be visible in order of this method to
 779    * detect the insert.
 780    *
 781    * @return <code>true</code> if the row has been inserted, <code>false</code>
 782    *         otherwise.
 783    * @exception SQLException If an error occurs.
 784    */
 785   boolean rowInserted() throws SQLException;
 786
 787   /**
 788    * This method tests whether or not the current row in the result set
 789    * has been deleted.  Deletes must be visible in order of this method to
 790    * detect the deletion.
 791    *
 792    * @return <code>true</code> if the row has been deleted, <code>false</code>
 793    *         otherwise.
 794    * @exception SQLException If an error occurs.
 795    */
 796   boolean rowDeleted() throws SQLException;
 797
 798   /**
 799    * This method updates the specified column to have a NULL value.  This
 800    * does not update the actual database.  <code>updateRow</code> must be
 801    * called in order to do that.
 802    *
 803    * @return index The index of the column to update.
 804    * @exception SQLException If an error occurs.
 805    */
 806   void updateNull(int columnIndex) throws SQLException;
 807
 808   /**
 809    * This method updates the specified column to have a boolean value.  This
 810    * does not update the actual database.  <code>updateRow</code> must be
 811    * called in order to do that.
 812    *
 813    * @param index The index of the column to update.
 814    * @param value The new value of the column.
 815    * @exception SQLException If an error occurs.
 816    */
 817   void updateBoolean(int columnIndex, boolean x) throws SQLException;
 818
 819   /**
 820    * This method updates the specified column to have a byte value.  This
 821    * does not update the actual database.  <code>updateRow</code> must be
 822    * called in order to do that.
 823    *
 824    * @param index The index of the column to update.
 825    * @param value The new value of the column.
 826    * @exception SQLException If an error occurs.
 827    */
 828   void updateByte(int columnIndex, byte x) throws SQLException;
 829
 830   /**
 831    * This method updates the specified column to have a short value.  This
 832    * does not update the actual database.  <code>updateRow</code> must be
 833    * called in order to do that.
 834    *
 835    * @param index The index of the column to update.
 836    * @param value The new value of the column.
 837    * @exception SQLException If an error occurs.
 838    */
 839   void updateShort(int columnIndex, short x) throws SQLException;
 840
 841   /**
 842    * This method updates the specified column to have an int value.  This
 843    * does not update the actual database.  <code>updateRow</code> must be
 844    * called in order to do that.
 845    *
 846    * @param index The index of the column to update.
 847    * @param value The new value of the column.
 848    * @exception SQLException If an error occurs.
 849    */
 850   void updateInt(int columnIndex, int x) throws SQLException;
 851
 852   /**
 853    * This method updates the specified column to have a long value.  This
 854    * does not update the actual database.  <code>updateRow</code> must be
 855    * called in order to do that.
 856    *
 857    * @param index The index of the column to update.
 858    * @param value The new value of the column.
 859    * @exception SQLException If an error occurs.
 860    */
 861   void updateLong(int columnIndex, long x) throws SQLException;
 862
 863   /**
 864    * This method updates the specified column to have a float value.  This
 865    * does not update the actual database.  <code>updateRow</code> must be
 866    * called in order to do that.
 867    *
 868    * @param index The index of the column to update.
 869    * @param value The new value of the column.
 870    * @exception SQLException If an error occurs.
 871    */
 872   void updateFloat(int columnIndex, float x) throws SQLException;
 873
 874   /**
 875    * This method updates the specified column to have a double value.  This
 876    * does not update the actual database.  <code>updateRow</code> must be
 877    * called in order to do that.
 878    *
 879    * @param index The index of the column to update.
 880    * @param value The new value of the column.
 881    * @exception SQLException If an error occurs.
 882    */
 883   void updateDouble(int columnIndex, double x) throws SQLException;
 884
 885   /**
 886    * This method updates the specified column to have a BigDecimal value.  This
 887    * does not update the actual database.  <code>updateRow</code> must be
 888    * called in order to do that.
 889    *
 890    * @param index The index of the column to update.
 891    * @param value The new value of the column.
 892    * @exception SQLException If an error occurs.
 893    */
 894   void updateBigDecimal(int columnIndex, BigDecimal x)
 895     throws SQLException;
 896
 897   /**
 898    * This method updates the specified column to have a String value.  This
 899    * does not update the actual database.  <code>updateRow</code> must be
 900    * called in order to do that.
 901    *
 902    * @param index The index of the column to update.
 903    * @param value The new value of the column.
 904    * @exception SQLException If an error occurs.
 905    */
 906   void updateString(int columnIndex, String x) throws SQLException;
 907
 908   /**
 909    * This method updates the specified column to have a byte array value.  This
 910    * does not update the actual database.  <code>updateRow</code> must be
 911    * called in order to do that.
 912    *
 913    * @param index The index of the column to update.
 914    * @param value The new value of the column.
 915    * @exception SQLException If an error occurs.
 916    */
 917   void updateBytes(int columnIndex, byte[] x) throws SQLException;
 918
 919   /**
 920    * This method updates the specified column to have a java.sql.Date value.  This
 921    * does not update the actual database.  <code>updateRow</code> must be
 922    * called in order to do that.
 923    *
 924    * @param index The index of the column to update.
 925    * @param value The new value of the column.
 926    * @exception SQLException If an error occurs.
 927    */
 928   void updateDate(int columnIndex, Date x) throws SQLException;
 929
 930   /**
 931    * This method updates the specified column to have a java.sql.Time value.  This
 932    * does not update the actual database.  <code>updateRow</code> must be
 933    * called in order to do that.
 934    *
 935    * @param index The index of the column to update.
 936    * @param value The new value of the column.
 937    * @exception SQLException If an error occurs.
 938    */
 939   void updateTime(int columnIndex, Time x) throws SQLException;
 940
 941   /**
 942    * This method updates the specified column to have a java.sql.Timestamp value.
 943    * This does not update the actual database.  <code>updateRow</code> must be
 944    * called in order to do that.
 945    *
 946    * @param index The index of the column to update.
 947    * @param value The new value of the column.
 948    * @exception SQLException If an error occurs.
 949    */
 950   void updateTimestamp(int columnIndex, Timestamp x)
 951     throws SQLException;
 952
 953   /**
 954    * This method updates the specified column from an ASCII text stream.
 955    * This does not update the actual database.  <code>updateRow</code> must be
 956    * called in order to do that.
 957    *
 958    * @param index The index of the column to update.
 959    * @param value The new value of the column.
 960    * @param length The length of the stream.
 961    * @exception SQLException If an error occurs.
 962    */
 963   void updateAsciiStream(int columnIndex, InputStream x, int length)
 964     throws SQLException;
 965
 966   /**
 967    * This method updates the specified column from a binary stream.
 968    * This does not update the actual database.  <code>updateRow</code> must be
 969    * called in order to do that.
 970    *
 971    * @param index The index of the column to update.
 972    * @param value The new value of the column.
 973    * @param length The length of the stream.
 974    * @exception SQLException If an error occurs.
 975    */
 976   void updateBinaryStream(int columnIndex, InputStream x, int length)
 977     throws SQLException;
 978
 979   /**
 980    * This method updates the specified column from a character stream.
 981    * This does not update the actual database.  <code>updateRow</code> must be
 982    * called in order to do that.
 983    *
 984    * @param index The index of the column to update.
 985    * @param value The new value of the column.
 986    * @param length The length of the stream.
 987    * @exception SQLException If an error occurs.
 988    */
 989   void updateCharacterStream(int columnIndex, Reader x, int length)
 990     throws SQLException;
 991
 992   /**
 993    * This method updates the specified column to have an Object value.
 994    * This does not update the actual database.  <code>updateRow</code> must be
 995    * called in order to do that.
 996    *
 997    * @param index The index of the column to update.
 998    * @param value The new value of the column.
 999    *
1000    * @exception SQLException If an error occurs.
1001    */
1002   void updateObject(int columnIndex, Object x, int scale)
1003     throws SQLException;
1004
1005   /**
1006    * This method updates the specified column to have an Object value.
1007    * This does not update the actual database.  <code>updateRow</code> must be
1008    * called in order to do that.
1009    *
1010    * @param index The index of the column to update.
1011    * @param value The new value of the column.
1012    * @param scale The scale of the object in question, which is used only
1013    *        for numeric type objects.
1014    * @exception SQLException If an error occurs.
1015    */
1016   void updateObject(int columnIndex, Object x) throws SQLException;
1017
1018   /**
1019    * This method updates the specified column to have a NULL value.  This
1020    * does not update the actual database.  <code>updateRow</code> must be
1021    * called in order to do that.
1022    *
1023    * @return name The name of the column to update.
1024    * @exception SQLException If an error occurs.
1025    */
1026   void updateNull(String columnName) throws SQLException;
1027
1028   /**
1029    * This method updates the specified column to have a boolean value.  This
1030    * does not update the actual database.  <code>updateRow</code> must be
1031    * called in order to do that.
1032    *
1033    * @param name The name of the column to update.
1034    * @param value The new value of the column.
1035    * @exception SQLException If an error occurs.
1036    */
1037   void updateBoolean(String columnName, boolean x) throws SQLException;
1038
1039   /**
1040    * This method updates the specified column to have a byte value.  This
1041    * does not update the actual database.  <code>updateRow</code> must be
1042    * called in order to do that.
1043    *
1044    * @param name The name of the column to update.
1045    * @param value The new value of the column.
1046    * @exception SQLException If an error occurs.
1047    */
1048   void updateByte(String columnName, byte x) throws SQLException;
1049
1050   /**
1051    * This method updates the specified column to have a short value.  This
1052    * does not update the actual database.  <code>updateRow</code> must be
1053    * called in order to do that.
1054    *
1055    * @param name The name of the column to update.
1056    * @param value The new value of the column.
1057    * @exception SQLException If an error occurs.
1058    */
1059   void updateShort(String columnName, short x) throws SQLException;
1060
1061   /**
1062    * This method updates the specified column to have an int value.  This
1063    * does not update the actual database.  <code>updateRow</code> must be
1064    * called in order to do that.
1065    *
1066    * @param name The name of the column to update.
1067    * @param value The new value of the column.
1068    * @exception SQLException If an error occurs.
1069    */
1070   void updateInt(String columnName, int x) throws SQLException;
1071
1072   /**
1073    * This method updates the specified column to have a long value.  This
1074    * does not update the actual database.  <code>updateRow</code> must be
1075    * called in order to do that.
1076    *
1077    * @param name The name of the column to update.
1078    * @param value The new value of the column.
1079    * @exception SQLException If an error occurs.
1080    */
1081   void updateLong(String columnName, long x) throws SQLException;
1082
1083   /**
1084    * This method updates the specified column to have a float value.  This
1085    * does not update the actual database.  <code>updateRow</code> must be
1086    * called in order to do that.
1087    *
1088    * @param name The name of the column to update.
1089    * @param value The new value of the column.
1090    * @exception SQLException If an error occurs.
1091    */
1092   void updateFloat(String columnName, float x) throws SQLException;
1093
1094   /**
1095    * This method updates the specified column to have a double value.  This
1096    * does not update the actual database.  <code>updateRow</code> must be
1097    * called in order to do that.
1098    *
1099    * @param name The name of the column to update.
1100    * @param value The new value of the column.
1101    * @exception SQLException If an error occurs.
1102    */
1103   void updateDouble(String columnName, double x) throws SQLException;
1104
1105   /**
1106    * This method updates the specified column to have a BigDecimal value.  This
1107    * does not update the actual database.  <code>updateRow</code> must be
1108    * called in order to do that.
1109    *
1110    * @param name The name of the column to update.
1111    * @param value The new value of the column.
1112    * @exception SQLException If an error occurs.
1113    */
1114   void updateBigDecimal(String columnName, BigDecimal x)
1115     throws SQLException;
1116
1117   /**
1118    * This method updates the specified column to have a String value.  This
1119    * does not update the actual database.  <code>updateRow</code> must be
1120    * called in order to do that.
1121    *
1122    * @param name The name of the column to update.
1123    * @param value The new value of the column.
1124    * @exception SQLException If an error occurs.
1125    */
1126   void updateString(String columnName, String x) throws SQLException;
1127
1128   /**
1129    * This method updates the specified column to have a byte array value.  This
1130    * does not update the actual database.  <code>updateRow</code> must be
1131    * called in order to do that.
1132    *
1133    * @param name The name of the column to update.
1134    * @param value The new value of the column.
1135    * @exception SQLException If an error occurs.
1136    */
1137   void updateBytes(String columnName, byte[] x) throws SQLException;
1138
1139   /**
1140    * This method updates the specified column to have a java.sql.Date value.  This
1141    * does not update the actual database.  <code>updateRow</code> must be
1142    * called in order to do that.
1143    *
1144    * @param name The name of the column to update.
1145    * @param value The new value of the column.
1146    * @exception SQLException If an error occurs.
1147    */
1148   void updateDate(String columnName, Date x) throws SQLException;
1149
1150   /**
1151    * This method updates the specified column to have a java.sql.Time value.  This
1152    * does not update the actual database.  <code>updateRow</code> must be
1153    * called in order to do that.
1154    *
1155    * @param name The name of the column to update.
1156    * @param value The new value of the column.
1157    * @exception SQLException If an error occurs.
1158    */
1159   void updateTime(String columnName, Time x) throws SQLException;
1160
1161   /**
1162    * This method updates the specified column to have a java.sql.Timestamp value.
1163    * This does not update the actual database.  <code>updateRow</code> must be
1164    * called in order to do that.
1165    *
1166    * @param name The name of the column to update.
1167    * @param value The new value of the column.
1168    * @exception SQLException If an error occurs.
1169    */
1170   void updateTimestamp(String columnName, Timestamp x)
1171     throws SQLException;
1172
1173   /**
1174    * This method updates the specified column from an ASCII text stream.
1175    * This does not update the actual database.  <code>updateRow</code> must be
1176    * called in order to do that.
1177    *
1178    * @param name The name of the column to update.
1179    * @param value The new value of the column.
1180    * @param length The length of the stream.
1181    * @exception SQLException If an error occurs.
1182    */
1183   void updateAsciiStream(String columnName, InputStream x, int length)
1184     throws SQLException;
1185
1186   /**
1187    * This method updates the specified column from a binary stream.
1188    * This does not update the actual database.  <code>updateRow</code> must be
1189    * called in order to do that.
1190    *
1191    * @param name The name of the column to update.
1192    * @param value The new value of the column.
1193    * @param length The length of the stream.
1194    * @exception SQLException If an error occurs.
1195    */
1196   void updateBinaryStream(String columnName, InputStream x, int length)
1197     throws SQLException;
1198
1199   /**
1200    * This method updates the specified column from a character stream.
1201    * This does not update the actual database.  <code>updateRow</code> must be
1202    * called in order to do that.
1203    *
1204    * @param name The name of the column to update.
1205    * @param value The new value of the column.
1206    * @param length The length of the stream.
1207    *
1208    * @exception SQLException If an error occurs.
1209    */
1210   void updateCharacterStream(String columnName, Reader reader,
1211     int length) throws SQLException;
1212
1213   /**
1214    * This method updates the specified column to have an Object value.
1215    * This does not update the actual database.  <code>updateRow</code> must be
1216    * called in order to do that.
1217    *
1218    * @param name The name of the column to update.
1219    * @param value The new value of the column.
1220    * @exception SQLException If an error occurs.
1221    */
1222   void updateObject(String columnName, Object x, int scale)
1223     throws SQLException;
1224
1225   /**
1226    * This method updates the specified column to have an Object value.
1227    * This does not update the actual database.  <code>updateRow</code> must be
1228    * called in order to do that.
1229    *
1230    * @param name The name of the column to update.
1231    * @param value The new value of the column.
1232    * @param scale The scale of the object in question, which is used only
1233    *        for numeric type objects.
1234    * @exception SQLException If an error occurs.
1235    */
1236   void updateObject(String columnName, Object x) throws SQLException;
1237
1238   /**
1239    * This method inserts the current row into the database.  The result set
1240    * must be positioned on the insert row in order to call this method
1241    * successfully.
1242    *
1243    * @exception SQLException If an error occurs.
1244    */
1245   void insertRow() throws SQLException;
1246
1247   /**
1248    * This method updates the current row in the database.
1249    *
1250    * @exception SQLException If an error occurs.
1251    */
1252   void updateRow() throws SQLException;
1253
1254   /**
1255    * This method deletes the current row in the database.
1256    *
1257    * @exception SQLException If an error occurs.
1258    */
1259   void deleteRow() throws SQLException;
1260
1261   /**
1262    * This method refreshes the contents of the current row from the database.
1263    *
1264    * @exception SQLException If an error occurs.
1265    */
1266   void refreshRow() throws SQLException;
1267
1268   /**
1269    * This method cancels any changes that have been made to a row.  If
1270    * the <code>rowUpdate</code> method has been called, then the changes
1271    * cannot be undone.
1272    *
1273    * @exception SQLException If an error occurs.
1274    */
1275   void cancelRowUpdates() throws SQLException;
1276
1277   /**
1278    * This method positions the result set to the "insert row", which allows
1279    * a new row to be inserted into the database from the result set.
1280    *
1281    * @exception SQLException If an error occurs.
1282    */
1283   void moveToInsertRow() throws SQLException;
1284
1285   /**
1286    * This method moves the result set position from the insert row back to
1287    * the current row that was selected prior to moving to the insert row.
1288    *
1289    * @exception SQLException If an error occurs.
1290    */
1291   void moveToCurrentRow() throws SQLException;
1292
1293   /**
1294    * This method returns a the <code>Statement</code> that was used to
1295    * produce this result set.
1296    *
1297    * @return The <code>Statement</code> used to produce this result set.
1298    *
1299    * @exception SQLException If an error occurs.
1300    */
1301   Statement getStatement() throws SQLException;
1302
1303   /**
1304    * This method returns the value of the specified column as a Java
1305    * <code>Object</code> using the specified SQL type to Java type map.
1306    *
1307    * @param index The index of the column to return.
1308    * @param map The SQL type to Java type map to use.
1309    * @return The value of the column as an <code>Object</code>.
1310    * @exception SQLException If an error occurs.
1311    */
1312   Object getObject(int i, Map map) throws SQLException;
1313
1314   /**
1315    * This method returns a <code>Ref</code> for the specified column which
1316    * represents the structured type for the column.
1317    *
1318    * @param index  The index of the column to return.
1319    * @return A <code>Ref</code> object for the column
1320    * @exception SQLException If an error occurs.
1321    */
1322   Ref getRef(int i) throws SQLException;
1323
1324   /**
1325    * This method returns the specified column value as a BLOB.
1326    *
1327    * @param index The index of the column value to return.
1328    * @return The value of the column as a BLOB.
1329    * @exception SQLException If an error occurs.
1330    */
1331   Blob getBlob(int i) throws SQLException;
1332
1333   /**
1334    * This method returns the specified column value as a CLOB.
1335    *
1336    * @param index The index of the column value to return.
1337    * @return The value of the column as a CLOB.
1338    * @exception SQLException If an error occurs.
1339    */
1340   Clob getClob(int i) throws SQLException;
1341
1342   /**
1343    * This method returns the specified column value as an <code>Array</code>.
1344    *
1345    * @param index The index of the column value to return.
1346    * @return The value of the column as an <code>Array</code>.
1347    * @exception SQLException If an error occurs.
1348    */
1349   Array getArray(int i) throws SQLException;
1350
1351   /**
1352    * This method returns the value of the specified column as a Java
1353    * <code>Object</code> using the specified SQL type to Java type map.
1354    *
1355    * @param name The name of the column to return.
1356    * @param map The SQL type to Java type map to use.
1357    * @return The value of the column as an <code>Object</code>.
1358    * @exception SQLException If an error occurs.
1359    */
1360   Object getObject(String colName, Map map) throws SQLException;
1361
1362   /**
1363    * This method returns a <code>Ref</code> for the specified column which
1364    * represents the structured type for the column.
1365    *
1366    * @param index  The index of the column to return.
1367    * @return A <code>Ref</code> object for the column
1368    * @exception SQLException If an error occurs.
1369    */
1370   Ref getRef(String colName) throws SQLException;
1371
1372   /**
1373    * This method returns the specified column value as a BLOB.
1374    *
1375    * @param name The name of the column value to return.
1376    * @return The value of the column as a BLOB.
1377    * @exception SQLException If an error occurs.
1378    */
1379   Blob getBlob(String colName) throws SQLException;
1380
1381   /**
1382    * This method returns the specified column value as a CLOB.
1383    *
1384    * @param name The name of the column value to return.
1385    * @return The value of the column as a CLOB.
1386    * @exception SQLException If an error occurs.
1387    */
1388   Clob getClob(String colName) throws SQLException;
1389
1390   /**
1391    * This method returns the specified column value as an <code>Array</code>.
1392    *
1393    * @param name The name of the column value to return.
1394    * @return The value of the column as an <code>Array</code>.
1395    * @exception SQLException If an error occurs.
1396    */
1397   Array getArray(String colName) throws SQLException;
1398
1399   /**
1400    * This method returns the specified column value as a
1401    * <code>java.sql.Date</code>.  The specified <code>Calendar</code> is used
1402    * to generate a value for the date if the database does not support
1403    * timezones.
1404    *
1405    * @param index The index of the column value to return.
1406    * @param cal The <code>Calendar</code> to use for calculating timezones.
1407    * @return The value of the column as a <code>java.sql.Date</code>.
1408    * @exception SQLException If an error occurs.
1409    */
1410   Date getDate(int columnIndex, Calendar cal) throws SQLException;
1411
1412   /**
1413    * This method returns the specified column value as a
1414    * <code>java.sql.Date</code>.  The specified <code>Calendar</code> is used
1415    * to generate a value for the date if the database does not support
1416    * timezones.
1417    *
1418    * @param name The name of the column value to return.
1419    * @param cal The <code>Calendar</code> to use for calculating timezones.
1420    * @return The value of the column as a <code>java.sql.Date</code>.
1421    * @exception SQLException If an error occurs.
1422    */
1423   Date getDate(String columnName, Calendar cal) throws SQLException;
1424
1425   /**
1426    * This method returns the specified column value as a
1427    * <code>java.sql.Time</code>.  The specified <code>Calendar</code> is used
1428    * to generate a value for the time if the database does not support
1429    * timezones.
1430    *
1431    * @param index The index of the column value to return.
1432    * @param cal The <code>Calendar</code> to use for calculating timezones.
1433    * @return The value of the column as a <code>java.sql.Time</code>.
1434    * @exception SQLException If an error occurs.
1435    */
1436   Time getTime(int columnIndex, Calendar cal) throws SQLException;
1437
1438   /**
1439    * This method returns the specified column value as a
1440    * <code>java.sql.Time</code>.  The specified <code>Calendar</code> is used
1441    * to generate a value for the time if the database does not support
1442    * timezones.
1443    *
1444    * @param name The name of the column value to return.
1445    * @param cal The <code>Calendar</code> to use for calculating timezones.
1446    * @return The value of the column as a <code>java.sql.Time</code>.
1447    * @exception SQLException If an error occurs.
1448    */
1449   Time getTime(String columnName, Calendar cal) throws SQLException;
1450
1451   /**
1452    * This method returns the specified column value as a
1453    * <code>java.sql.Timestamp</code>.  The specified <code>Calendar</code> is used
1454    * to generate a value for the timestamp if the database does not support
1455    * timezones.
1456    *
1457    * @param index The index of the column value to return.
1458    * @param cal The <code>Calendar</code> to use for calculating timezones.
1459    * @return The value of the column as a <code>java.sql.Timestamp</code>.
1460    * @exception SQLException If an error occurs.
1461    */
1462   Timestamp getTimestamp(int columnIndex, Calendar cal)
1463     throws SQLException;
1464
1465   /**
1466    * This method returns the specified column value as a
1467    * <code>java.sql.Timestamp</code>.  The specified <code>Calendar</code> is used
1468    * to generate a value for the timestamp if the database does not support
1469    * timezones.
1470    *
1471    * @param name The name of the column value to return.
1472    * @param cal The <code>Calendar</code> to use for calculating timezones.
1473    *
1474    * @return The value of the column as a <code>java.sql.Timestamp</code>.
1475    *
1476    * @exception SQLException If an error occurs.
1477    */
1478   Timestamp getTimestamp(String columnName, Calendar cal)
1479     throws SQLException;
1480
1481   /**
1482    * @since 1.4
1483    */
1484   URL getURL(int columnIndex) throws SQLException;
1485
1486   /**
1487    * @since 1.4
1488    */
1489   URL getURL(String columnName) throws SQLException;
1490
1491   /**
1492    * @since 1.4
1493    */
1494   void updateRef(int columnIndex, Ref x) throws SQLException;
1495
1496   /**
1497    * @since 1.4
1498    */
1499   void updateRef(String columnName, Ref x) throws SQLException;
1500
1501   /**
1502    * @since 1.4
1503    */
1504   void updateBlob(int columnIndex, Blob x) throws SQLException;
1505
1506   /**
1507    * @since 1.4
1508    */
1509   void updateBlob(String columnName, Blob x) throws SQLException;
1510
1511   /**
1512    * @since 1.4
1513    */
1514   void updateClob(int columnIndex, Clob x) throws SQLException;
1515
1516   /**
1517    * @since 1.4
1518    */
1519   void updateClob(String columnName, Clob x) throws SQLException;
1520
1521   /**
1522    * @since 1.4
1523    */
1524   void updateArray(int columnIndex, Array x) throws SQLException;
1525
1526   /**
1527    * @since 1.4
1528    */
1529   void updateArray(String columnName, Array x) throws SQLException;
1530 }