001/* ResultSet.java -- A SQL statement result set.
002   Copyright (C) 1999, 2000, 2002, 2006 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010 
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package java.sql;
040
041import java.io.InputStream;
042import java.io.Reader;
043import java.math.BigDecimal;
044import java.net.URL;
045import java.util.Calendar;
046import java.util.Map;
047
048/**
049 * This interface provides access to the data set returned by a SQL
050 * statement.  An instance of this interface is returned by the various
051 * execution methods in the <code>Statement</code>.
052 *
053 * <p> This class models a cursor, which can be stepped through one row at a
054 * time.  Methods are provided for accessing columns by column name or by
055 * index.</p>
056 *
057 * <p> Note that a result set is invalidated if the statement that returned
058 * it is closed.</p>
059 *
060 * @author Aaron M. Renn (arenn@urbanophile.com)
061 */
062public interface ResultSet 
063{
064  /**
065   * The rows will be processed in order from first to last.
066   */
067  int FETCH_FORWARD = 1000;
068
069  /**
070   * The rows will be processed in order from last to first.
071   */
072  int FETCH_REVERSE = 1001;
073
074  /**
075   * The rows will be processed in an unknown order
076   */
077  int FETCH_UNKNOWN = 1002;
078
079  /**
080   * This type of result set may only step forward through the rows returned.
081   */
082  int TYPE_FORWARD_ONLY = 1003;
083
084  /**
085   * This type of result set is scrollable and is not sensitive to changes
086   * made by other statements.
087   */
088  int TYPE_SCROLL_INSENSITIVE = 1004;
089
090  /**
091   * This type of result set is scrollable and is also sensitive to changes
092   * made by other statements.
093   */
094  int TYPE_SCROLL_SENSITIVE = 1005;
095
096  /**
097   * The concurrency mode of for the result set may not be modified.
098   */
099  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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnIndex 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName The name 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnName 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 columnIndex 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 columnName 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 columnName 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 columnIndex 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 columnName 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 columnIndex 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 columnName 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 rows The number of row positions to move.
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. The
717   *                  allowed values are the <code>FETCH_*</code> constants
718   *                  defined in this interface.
719   * @exception SQLException If an error occurs.
720   */
721  void setFetchDirection(int direction) throws SQLException;
722
723  /**
724   * This method returns the current fetch direction for this result set.
725   *
726   * @return The fetch direction for this result set.
727   * @exception SQLException If an error occurs.
728   */
729  int getFetchDirection() throws SQLException;
730
731  /**
732   * This method provides a hint to the driver about how many rows at a
733   * time it should fetch from the database.
734   *
735   * @param rows The number of rows the driver should fetch per call.
736   * @exception SQLException If an error occurs.
737   */
738  void setFetchSize(int rows) throws SQLException;
739
740  /**
741   * This method returns the current number of rows that will be fetched 
742   * from the database at a time.
743   *
744   * @return The current fetch size for this result set.
745   * @exception SQLException If an error occurs.
746   */
747  int getFetchSize() throws SQLException;
748
749  /**
750   * This method returns the result set type of this result set.  This will
751   * be one of the <code>TYPE_*</code> constants defined in this interface.
752   *
753   * @return The result set type.
754   * @exception SQLException If an error occurs.
755   */
756  int getType() throws SQLException;
757
758  /**
759   * This method returns the concurrency type of this result set.  This will
760   * be one of the <code>CONCUR_*</code> constants defined in this interface.
761   *
762   * @return The result set concurrency type.
763   * @exception SQLException If an error occurs.
764   */
765  int getConcurrency() throws SQLException;
766
767  /**
768   * This method tests whether or not the current row in the result set
769   * has been updated.  Updates must be visible in order of this method to
770   * detect the update.
771   *
772   * @return <code>true</code> if the row has been updated, <code>false</code>
773   *         otherwise.
774   * @exception SQLException If an error occurs.
775   */
776  boolean rowUpdated() throws SQLException;
777
778  /**
779   * This method tests whether or not the current row in the result set
780   * has been inserted.  Inserts must be visible in order of this method to
781   * detect the insert.
782   *
783   * @return <code>true</code> if the row has been inserted, <code>false</code>
784   *         otherwise.
785   * @exception SQLException If an error occurs.
786   */
787  boolean rowInserted() throws SQLException;
788
789  /**
790   * This method tests whether or not the current row in the result set
791   * has been deleted.  Deletes must be visible in order of this method to
792   * detect the deletion.
793   *
794   * @return <code>true</code> if the row has been deleted, <code>false</code>
795   *         otherwise.
796   * @exception SQLException If an error occurs.
797   */
798  boolean rowDeleted() throws SQLException;
799
800  /**
801   * This method updates the specified column to have a NULL value.  This
802   * does not update the actual database.  <code>updateRow</code> must be
803   * called in order to do that.
804   *
805   * @param columnIndex The index of the column to update.
806   * @exception SQLException If an error occurs.
807   */
808  void updateNull(int columnIndex) throws SQLException;
809
810  /**
811   * This method updates the specified column to have a boolean value.  This
812   * does not update the actual database.  <code>updateRow</code> must be
813   * called in order to do that.
814   *
815   * @param columnIndex The index of the column to update.
816   * @param value The new value of the column.
817   * @exception SQLException If an error occurs.
818   */
819  void updateBoolean(int columnIndex, boolean value) throws SQLException;
820
821  /**
822   * This method updates the specified column to have a byte value.  This
823   * does not update the actual database.  <code>updateRow</code> must be
824   * called in order to do that.
825   *
826   * @param columnIndex The index of the column to update.
827   * @param value The new value of the column.
828   * @exception SQLException If an error occurs.
829   */
830  void updateByte(int columnIndex, byte value) throws SQLException;
831
832  /**
833   * This method updates the specified column to have a short value.  This
834   * does not update the actual database.  <code>updateRow</code> must be
835   * called in order to do that.
836   *
837   * @param columnIndex The index of the column to update.
838   * @param value The new value of the column.
839   * @exception SQLException If an error occurs.
840   */
841  void updateShort(int columnIndex, short value) throws SQLException;
842
843  /**
844   * This method updates the specified column to have an int value.  This
845   * does not update the actual database.  <code>updateRow</code> must be
846   * called in order to do that.
847   *
848   * @param columnIndex The index of the column to update.
849   * @param value The new value of the column.
850   * @exception SQLException If an error occurs.
851   */
852  void updateInt(int columnIndex, int value) throws SQLException;
853
854  /**
855   * This method updates the specified column to have a long value.  This
856   * does not update the actual database.  <code>updateRow</code> must be
857   * called in order to do that.
858   *
859   * @param columnIndex The index of the column to update.
860   * @param value The new value of the column.
861   * @exception SQLException If an error occurs.
862   */
863  void updateLong(int columnIndex, long value) throws SQLException;
864
865  /**
866   * This method updates the specified column to have a float value.  This
867   * does not update the actual database.  <code>updateRow</code> must be
868   * called in order to do that.
869   *
870   * @param columnIndex The index of the column to update.
871   * @param value The new value of the column.
872   * @exception SQLException If an error occurs.
873   */
874  void updateFloat(int columnIndex, float value) throws SQLException;
875
876  /**
877   * This method updates the specified column to have a double value.  This
878   * does not update the actual database.  <code>updateRow</code> must be
879   * called in order to do that.
880   *
881   * @param columnIndex The index of the column to update.
882   * @param value The new value of the column.
883   * @exception SQLException If an error occurs.
884   */
885  void updateDouble(int columnIndex, double value) throws SQLException;
886
887  /**
888   * This method updates the specified column to have a BigDecimal value.  This
889   * does not update the actual database.  <code>updateRow</code> must be
890   * called in order to do that.
891   *
892   * @param columnIndex The index of the column to update.
893   * @param value The new value of the column.
894   * @exception SQLException If an error occurs.
895   */
896  void updateBigDecimal(int columnIndex, BigDecimal value)
897    throws SQLException;
898
899  /**
900   * This method updates the specified column to have a String value.  This
901   * does not update the actual database.  <code>updateRow</code> must be
902   * called in order to do that.
903   *
904   * @param columnIndex The index of the column to update.
905   * @param value The new value of the column.
906   * @exception SQLException If an error occurs.
907   */
908  void updateString(int columnIndex, String value) throws SQLException;
909
910  /**
911   * This method updates the specified column to have a byte array value.  This
912   * does not update the actual database.  <code>updateRow</code> must be
913   * called in order to do that.
914   *
915   * @param columnIndex The index of the column to update.
916   * @param value The new value of the column.
917   * @exception SQLException If an error occurs.
918   */
919  void updateBytes(int columnIndex, byte[] value) throws SQLException;
920
921  /**
922   * This method updates the specified column to have a java.sql.Date value.  This
923   * does not update the actual database.  <code>updateRow</code> must be
924   * called in order to do that.
925   *
926   * @param columnIndex The index of the column to update.
927   * @param value The new value of the column.
928   * @exception SQLException If an error occurs.
929   */
930  void updateDate(int columnIndex, Date value) throws SQLException;
931
932  /**
933   * This method updates the specified column to have a java.sql.Time value.  This
934   * does not update the actual database.  <code>updateRow</code> must be
935   * called in order to do that.
936   *
937   * @param columnIndex The index of the column to update.
938   * @param value The new value of the column.
939   * @exception SQLException If an error occurs.
940   */
941  void updateTime(int columnIndex, Time value) throws SQLException;
942
943  /**
944   * This method updates the specified column to have a java.sql.Timestamp value.  
945   * This does not update the actual database.  <code>updateRow</code> must be
946   * called in order to do that.
947   *
948   * @param columnIndex The index of the column to update.
949   * @param value The new value of the column.
950   * @exception SQLException If an error occurs.
951   */
952  void updateTimestamp(int columnIndex, Timestamp value)
953    throws SQLException;
954
955  /**
956   * This method updates the specified column from an ASCII text stream.
957   * This does not update the actual database.  <code>updateRow</code> must be
958   * called in order to do that.
959   *
960   * @param columnIndex The index of the column to update.
961   * @param stream The stream from which the column value is updated.
962   * @param count The length of the stream.
963   * @exception SQLException If an error occurs.
964   */
965  void updateAsciiStream(int columnIndex, InputStream stream, int count)
966    throws SQLException;
967
968  /**
969   * This method updates the specified column from a binary stream.
970   * This does not update the actual database.  <code>updateRow</code> must be
971   * called in order to do that.
972   *
973   * @param columnIndex The index of the column to update.
974   * @param stream The stream from which the column value is updated.
975   * @param count The length of the stream.
976   * @exception SQLException If an error occurs.
977   */
978  void updateBinaryStream(int columnIndex, InputStream stream, int count)
979    throws SQLException;
980
981  /**
982   * This method updates the specified column from a character stream.
983   * This does not update the actual database.  <code>updateRow</code> must be
984   * called in order to do that.
985   *
986   * @param columnIndex The index of the column to update.
987   * @param reader The reader from which the column value is updated.
988   * @param count The length of the stream.
989   * @exception SQLException If an error occurs.
990   */
991  void updateCharacterStream(int columnIndex, Reader reader, int count)
992    throws SQLException;
993
994  /**
995   * This method updates the specified column to have an Object value.  
996   * This does not update the actual database.  <code>updateRow</code> must be
997   * called in order to do that.
998   *
999   * @param columnIndex The index of the column to update.
1000   * @param value The new value of the column.
1001   * @param scale The scale of the object in question, which is used only
1002   *              for numeric type objects.
1003   * @exception SQLException If an error occurs.
1004   */
1005  void updateObject(int columnIndex, Object value, int scale)
1006    throws SQLException;
1007
1008  /**
1009   * This method updates the specified column to have an Object value.  
1010   * This does not update the actual database.  <code>updateRow</code> must be
1011   * called in order to do that.
1012   *
1013   * @param columnIndex The index of the column to update.
1014   * @param value The new value of the column.
1015   * @exception SQLException If an error occurs.
1016   */
1017  void updateObject(int columnIndex, Object value) throws SQLException;
1018
1019  /**
1020   * This method updates the specified column to have a NULL value.  This
1021   * does not update the actual database.  <code>updateRow</code> must be
1022   * called in order to do that.
1023   *
1024   * @param columnName The name of the column to update.
1025   * @exception SQLException If an error occurs.
1026   */
1027  void updateNull(String columnName) throws SQLException;
1028
1029  /**
1030   * This method updates the specified column to have a boolean value.  This
1031   * does not update the actual database.  <code>updateRow</code> must be
1032   * called in order to do that.
1033   *
1034   * @param columnName The name of the column to update.
1035   * @param value The new value of the column.
1036   * @exception SQLException If an error occurs.
1037   */
1038  void updateBoolean(String columnName, boolean value) throws SQLException;
1039
1040  /**
1041   * This method updates the specified column to have a byte value.  This
1042   * does not update the actual database.  <code>updateRow</code> must be
1043   * called in order to do that.
1044   *
1045   * @param columnName The name of the column to update.
1046   * @param value The new value of the column.
1047   * @exception SQLException If an error occurs.
1048   */
1049  void updateByte(String columnName, byte value) throws SQLException;
1050
1051  /**
1052   * This method updates the specified column to have a short value.  This
1053   * does not update the actual database.  <code>updateRow</code> must be
1054   * called in order to do that.
1055   *
1056   * @param columnName The name of the column to update.
1057   * @param value The new value of the column.
1058   * @exception SQLException If an error occurs.
1059   */
1060  void updateShort(String columnName, short value) throws SQLException;
1061
1062  /**
1063   * This method updates the specified column to have an int value.  This
1064   * does not update the actual database.  <code>updateRow</code> must be
1065   * called in order to do that.
1066   *
1067   * @param columnName The name of the column to update.
1068   * @param value The new value of the column.
1069   * @exception SQLException If an error occurs.
1070   */
1071  void updateInt(String columnName, int value) throws SQLException;
1072
1073  /**
1074   * This method updates the specified column to have a long value.  This
1075   * does not update the actual database.  <code>updateRow</code> must be
1076   * called in order to do that.
1077   *
1078   * @param columnName The name of the column to update.
1079   * @param value The new value of the column.
1080   * @exception SQLException If an error occurs.
1081   */
1082  void updateLong(String columnName, long value) throws SQLException;
1083
1084  /**
1085   * This method updates the specified column to have a float value.  This
1086   * does not update the actual database.  <code>updateRow</code> must be
1087   * called in order to do that.
1088   *
1089   * @param columnName The name of the column to update.
1090   * @param value The new value of the column.
1091   * @exception SQLException If an error occurs.
1092   */
1093  void updateFloat(String columnName, float value) throws SQLException;
1094
1095  /**
1096   * This method updates the specified column to have a double value.  This
1097   * does not update the actual database.  <code>updateRow</code> must be
1098   * called in order to do that.
1099   *
1100   * @param columnName The name of the column to update.
1101   * @param value The new value of the column.
1102   * @exception SQLException If an error occurs.
1103   */
1104  void updateDouble(String columnName, double value) throws SQLException;
1105
1106  /**
1107   * This method updates the specified column to have a BigDecimal value.  This
1108   * does not update the actual database.  <code>updateRow</code> must be
1109   * called in order to do that.
1110   *
1111   * @param columnName The name of the column to update.
1112   * @param value The new value of the column.
1113   * @exception SQLException If an error occurs.
1114   */
1115  void updateBigDecimal(String columnName, BigDecimal value)
1116    throws SQLException;
1117
1118  /**
1119   * This method updates the specified column to have a String value.  This
1120   * does not update the actual database.  <code>updateRow</code> must be
1121   * called in order to do that.
1122   *
1123   * @param columnName The name of the column to update.
1124   * @param value The new value of the column.
1125   * @exception SQLException If an error occurs.
1126   */
1127  void updateString(String columnName, String value) throws SQLException;
1128
1129  /**
1130   * This method updates the specified column to have a byte array value.  This
1131   * does not update the actual database.  <code>updateRow</code> must be
1132   * called in order to do that.
1133   *
1134   * @param columnName The name of the column to update.
1135   * @param value The new value of the column.
1136   * @exception SQLException If an error occurs.
1137   */
1138  void updateBytes(String columnName, byte[] value) throws SQLException;
1139
1140  /**
1141   * This method updates the specified column to have a java.sql.Date value.  This
1142   * does not update the actual database.  <code>updateRow</code> must be
1143   * called in order to do that.
1144   *
1145   * @param columnName The name of the column to update.
1146   * @param value The new value of the column.
1147   * @exception SQLException If an error occurs.
1148   */
1149  void updateDate(String columnName, Date value) throws SQLException;
1150
1151  /**
1152   * This method updates the specified column to have a java.sql.Time value.  This
1153   * does not update the actual database.  <code>updateRow</code> must be
1154   * called in order to do that.
1155   *
1156   * @param columnName The name of the column to update.
1157   * @param value The new value of the column.
1158   * @exception SQLException If an error occurs.
1159   */
1160  void updateTime(String columnName, Time value) throws SQLException;
1161
1162  /**
1163   * This method updates the specified column to have a java.sql.Timestamp value.  
1164   * This does not update the actual database.  <code>updateRow</code> must be
1165   * called in order to do that.
1166   *
1167   * @param columnName The name of the column to update.
1168   * @param value The new value of the column.
1169   * @exception SQLException If an error occurs.
1170   */
1171  void updateTimestamp(String columnName, Timestamp value)
1172    throws SQLException;
1173
1174  /**
1175   * This method updates the specified column from an ASCII text stream.
1176   * This does not update the actual database.  <code>updateRow</code> must be
1177   * called in order to do that.
1178   *
1179   * @param columnName The name of the column to update.
1180   * @param stream The stream from which the column value is updated.
1181   * @param count The length of the stream.
1182   * @exception SQLException If an error occurs.
1183   */
1184  void updateAsciiStream(String columnName, InputStream stream, int count)
1185    throws SQLException;
1186
1187  /**
1188   * This method updates the specified column from a binary stream.
1189   * This does not update the actual database.  <code>updateRow</code> must be
1190   * called in order to do that.
1191   *
1192   * @param columnName The name of the column to update.
1193   * @param stream The stream from which the column value is updated.
1194   * @param count The length of the stream.
1195   * @exception SQLException If an error occurs.
1196   */
1197  void updateBinaryStream(String columnName, InputStream stream, int count)
1198    throws SQLException;
1199
1200  /**
1201   * This method updates the specified column from a character stream.
1202   * This does not update the actual database.  <code>updateRow</code> must be
1203   * called in order to do that.
1204   *
1205   * @param columnName The name of the column to update.
1206   * @param reader The reader from which the column value is updated.
1207   * @param count The length of the stream.
1208   * @exception SQLException If an error occurs.
1209   */
1210  void updateCharacterStream(String columnName, Reader reader, int count)
1211    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 columnName The name of the column to update.
1219   * @param value The new value of the column.
1220   * @param scale The scale of the object in question, which is used only
1221   *              for numeric type objects.
1222   * @exception SQLException If an error occurs.
1223   */
1224  void updateObject(String columnName, Object value, int scale)
1225    throws SQLException;
1226
1227  /**
1228   * This method updates the specified column to have an Object value.  
1229   * This does not update the actual database.  <code>updateRow</code> must be
1230   * called in order to do that.
1231   *
1232   * @param columnName The name of the column to update.
1233   * @param value The new value of the column.
1234   * @exception SQLException If an error occurs.
1235   */
1236  void updateObject(String columnName, Object value) 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 columnIndex 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 columnIndex, Map<String, Class<?>> map)
1313    throws SQLException;
1314
1315  /**
1316   * This method returns a <code>Ref</code> for the specified column which
1317   * represents the structured type for the column.
1318   *
1319   * @param columnIndex The index of the column to return.
1320   * @return A <code>Ref</code> object for the column
1321   * @exception SQLException If an error occurs.
1322   */
1323  Ref getRef(int columnIndex) throws SQLException;
1324
1325  /**
1326   * This method returns the specified column value as a BLOB.
1327   *
1328   * @param columnIndex The index of the column value to return.
1329   * @return The value of the column as a BLOB.
1330   * @exception SQLException If an error occurs.
1331   */
1332  Blob getBlob(int columnIndex) throws SQLException;
1333
1334  /**
1335   * This method returns the specified column value as a CLOB.
1336   *
1337   * @param columnIndex The index of the column value to return.
1338   * @return The value of the column as a CLOB.
1339   * @exception SQLException If an error occurs.
1340   */
1341  Clob getClob(int columnIndex) throws SQLException;
1342
1343  /**
1344   * This method returns the specified column value as an <code>Array</code>.
1345   *
1346   * @param columnIndex The index of the column value to return.
1347   * @return The value of the column as an <code>Array</code>.
1348   * @exception SQLException If an error occurs.
1349   */
1350  Array getArray(int columnIndex) throws SQLException;
1351
1352  /**
1353   * This method returns the value of the specified column as a Java
1354   * <code>Object</code> using the specified SQL type to Java type map.
1355   *
1356   * @param columnName The name of the column to return.
1357   * @param map The SQL type to Java type map to use.
1358   * @return The value of the column as an <code>Object</code>.
1359   * @exception SQLException If an error occurs.
1360   */
1361  Object getObject(String columnName, Map<String, Class<?>> map) 
1362    throws SQLException;
1363
1364  /**
1365   * This method returns a <code>Ref</code> for the specified column which
1366   * represents the structured type for the column.
1367   *
1368   * @param columnName  The name of the column to return.
1369   * @return A <code>Ref</code> object for the column
1370   * @exception SQLException If an error occurs.
1371   */
1372  Ref getRef(String columnName) throws SQLException;
1373
1374  /**
1375   * This method returns the specified column value as a BLOB.
1376   *
1377   * @param columnName The name of the column value to return.
1378   * @return The value of the column as a BLOB.
1379   * @exception SQLException If an error occurs.
1380   */
1381  Blob getBlob(String columnName) throws SQLException;
1382
1383  /**
1384   * This method returns the specified column value as a CLOB.
1385   *
1386   * @param columnName The name of the column value to return.
1387   * @return The value of the column as a CLOB.
1388   * @exception SQLException If an error occurs.
1389   */
1390  Clob getClob(String columnName) throws SQLException;
1391
1392  /**
1393   * This method returns the specified column value as an <code>Array</code>.
1394   *
1395   * @param columnName The name of the column value to return.
1396   * @return The value of the column as an <code>Array</code>.
1397   * @exception SQLException If an error occurs.
1398   */
1399  Array getArray(String columnName) throws SQLException;
1400
1401  /**
1402   * This method returns the specified column value as a 
1403   * <code>java.sql.Date</code>.  The specified <code>Calendar</code> is used
1404   * to generate a value for the date if the database does not support
1405   * timezones.
1406   *
1407   * @param columnIndex The index of the column value to return.
1408   * @param cal The <code>Calendar</code> to use for calculating timezones.
1409   * @return The value of the column as a <code>java.sql.Date</code>.
1410   * @exception SQLException If an error occurs.
1411   */
1412  Date getDate(int columnIndex, Calendar cal) throws SQLException;
1413
1414  /**
1415   * This method returns the specified column value as a 
1416   * <code>java.sql.Date</code>.  The specified <code>Calendar</code> is used
1417   * to generate a value for the date if the database does not support
1418   * timezones.
1419   *
1420   * @param columnName The name of the column value to return.
1421   * @param cal The <code>Calendar</code> to use for calculating timezones.
1422   * @return The value of the column as a <code>java.sql.Date</code>.
1423   * @exception SQLException If an error occurs.
1424   */
1425  Date getDate(String columnName, Calendar cal) throws SQLException;
1426
1427  /**
1428   * This method returns the specified column value as a 
1429   * <code>java.sql.Time</code>.  The specified <code>Calendar</code> is used
1430   * to generate a value for the time if the database does not support
1431   * timezones.
1432   *
1433   * @param columnIndex The index of the column value to return.
1434   * @param cal The <code>Calendar</code> to use for calculating timezones.
1435   * @return The value of the column as a <code>java.sql.Time</code>.
1436   * @exception SQLException If an error occurs.
1437   */
1438  Time getTime(int columnIndex, Calendar cal) throws SQLException;
1439
1440  /**
1441   * This method returns the specified column value as a 
1442   * <code>java.sql.Time</code>.  The specified <code>Calendar</code> is used
1443   * to generate a value for the time if the database does not support
1444   * timezones.
1445   *
1446   * @param columnName The name of the column value to return.
1447   * @param cal The <code>Calendar</code> to use for calculating timezones.
1448   * @return The value of the column as a <code>java.sql.Time</code>.
1449   * @exception SQLException If an error occurs.
1450   */
1451  Time getTime(String columnName, Calendar cal) throws SQLException;
1452
1453  /**
1454   * This method returns the specified column value as a 
1455   * <code>java.sql.Timestamp</code>.  The specified <code>Calendar</code> is used
1456   * to generate a value for the timestamp if the database does not support
1457   * timezones.
1458   *
1459   * @param columnIndex The index of the column value to return.
1460   * @param cal The <code>Calendar</code> to use for calculating timezones.
1461   * @return The value of the column as a <code>java.sql.Timestamp</code>.
1462   * @exception SQLException If an error occurs.
1463   */
1464  Timestamp getTimestamp(int columnIndex, Calendar cal)
1465    throws SQLException;
1466
1467  /**
1468   * This method returns the specified column value as a 
1469   * <code>java.sql.Timestamp</code>.  The specified <code>Calendar</code> is used
1470   * to generate a value for the timestamp if the database does not support
1471   * timezones.
1472   *
1473   * @param columnName The name of the column value to return.
1474   * @param cal The <code>Calendar</code> to use for calculating timezones.
1475   *
1476   * @return The value of the column as a <code>java.sql.Timestamp</code>.
1477   *
1478   * @exception SQLException If an error occurs.
1479   */
1480  Timestamp getTimestamp(String columnName, Calendar cal)
1481    throws SQLException;
1482
1483  /**
1484   * This method returns the specified column value as a 
1485   * <code>java.net.URL</code>.
1486   * 
1487   * @param columnIndex The index of the column value to return.
1488   * @exception SQLException If an error occurs.
1489   * @since 1.4
1490   */
1491  URL getURL(int columnIndex) throws SQLException;
1492
1493  /**
1494   * This method returns the specified column value as a
1495   * <code>java.net.URL</code>.
1496   * 
1497   * @param columnName The name of the column value to return.
1498   * @exception SQLException If an error occurs.
1499   * @since 1.4
1500   */
1501  URL getURL(String columnName) throws SQLException;
1502
1503  /**
1504   * This method updates the specified column to have a 
1505   * <code>java.sql.Ref</code> value. 
1506   * This does not update the actual database. <code>updateRow</code> must be
1507   * called in order to do that.
1508   * 
1509   * @parm columnIndex The index of the column value to update.
1510   * @parm value The <code>java.sql.Ref</code> used to set the new value 
1511   *             of the column.
1512   * @exception SQLException If an error occurs.
1513   * @since 1.4
1514   */
1515  void updateRef(int columnIndex, Ref value) throws SQLException;
1516
1517  /**
1518   * This method updates the specified column to have a 
1519   * <code>java.sql.Ref</code> value. 
1520   * This does not update the actual database. <code>updateRow</code> must be
1521   * called in order to do that.
1522   * 
1523   * @parm columnName The name of the column value to update.
1524   * @parm value The <code>java.sql.Ref</code> used to set the new value 
1525   *             of the column.
1526   * @exception SQLException If an error occurs.
1527   * @since 1.4
1528   */
1529  void updateRef(String columnName, Ref value) throws SQLException;
1530
1531  /**
1532   * This method updates the specified column to have a 
1533   * <code>java.sql.Blob</code> value. 
1534   * This does not update the actual database. <code>updateRow</code> must be
1535   * called in order to do that.
1536   * 
1537   * @parm columnIndex The index of the column value to update.
1538   * @parm value The <code>java.sql.Blob</code> used to set the new value 
1539   *             of the column.
1540   * @exception SQLException If an error occurs.
1541   * @since 1.4
1542   */
1543  void updateBlob(int columnIndex, Blob value) throws SQLException;
1544
1545  /**
1546   * This method updates the specified column to have a 
1547   * <code>java.sql.Blob</code> value. 
1548   * This does not update the actual database. <code>updateRow</code> must be
1549   * called in order to do that.
1550   * 
1551   * @parm columnName The name of the column value to update.
1552   * @parm value The <code>java.sql.Blob</code> used to set the new value 
1553   *             of the column.
1554   * @exception SQLException If an error occurs.
1555   * @since 1.4
1556   */
1557  void updateBlob(String columnName, Blob value) throws SQLException;
1558
1559  /**
1560   * This method updates the specified column to have a 
1561   * <code>java.sql.Clob</code> value. 
1562   * This does not update the actual database. <code>updateRow</code> must be
1563   * called in order to do that.
1564   * 
1565   * @parm columnIndex The index of the column value to update.
1566   * @parm value The <code>java.sql.Clob</code> used to set the new value 
1567   *             of the column.
1568   * @exception SQLException If an error occurs.
1569   * @since 1.4
1570   */
1571  void updateClob(int columnIndex, Clob value) throws SQLException;
1572
1573  /**
1574   * This method updates the specified column to have a 
1575   * <code>java.sql.Clob</code> value. 
1576   * This does not update the actual database. <code>updateRow</code> must be
1577   * called in order to do that.
1578   * 
1579   * @parm columnName The name of the column value to update.
1580   * @parm value The <code>java.sql.Clob</code> used to set the new value 
1581   *             of the column.
1582   * @exception SQLException If an error occurs.
1583   * @since 1.4
1584   */
1585  void updateClob(String columnName, Clob value) throws SQLException;
1586
1587  /**
1588   * This method updates the specified column to have a 
1589   * <code>java.sqlArray</code> value. 
1590   * This does not update the actual database. <code>updateRow</code> must be
1591   * called in order to do that.
1592   * 
1593   * @parm columnIndex The index of the column value to update.
1594   * @parm value The new value of the column.
1595   * @exception SQLException If an error occurs.
1596   * @since 1.4
1597   */
1598  void updateArray(int columnIndex, Array value) throws SQLException;
1599
1600  /**
1601   * This method updates the specified column to have a 
1602   * <code>java.sqlArray</code> value. 
1603   * This does not update the actual database. <code>updateRow</code> must be
1604   * called in order to do that.
1605   * 
1606   * @parm columnName The name of the column value to update.
1607   * @parm value The new value of the column.
1608   * @exception SQLException If an error occurs.
1609   * @since 1.4
1610   */
1611  void updateArray(String columnName, Array value) throws SQLException;
1612}