org.firebirdsql.jdbc
Class FBUpdatableCursorFetcher

java.lang.Object
  org.firebirdsql.jdbc.FBUpdatableCursorFetcher

public class FBUpdatableCursorFetcher
extends Object

Statement fetcher for updatable cursor case. This fetcher keeps cursor position consistent, however we cannot tell now if we are on the last record. Method isLast()throws exception now.

Author:

Roman Rokytskyy

Field Summary

protected byte[][]	_nextRow
protected FBObjectListener.FetcherListener	fetcherListener
protected int	fetchSize
protected GDSHelper	gdsHelper
static int	MAX_FETCH_ROWS
protected int	maxRows
protected AbstractIscStmtHandle	stmt
protected Synchronizable	syncProvider

Method Summary

boolean	absolute(int row) Move cursor to the absolute row.
void	afterLast() Move cursor after last record.
void	beforeFirst() Move cursor before first record.
void	close() Close this fetcher and corresponding result set.
void	deleteRow() Delete row at current position.
void	fetch()
boolean	first() Move cursor to the rist row.
int	getFetchSize() Set the suggested number of rows to fetch with each batch fetch.
protected byte[][]	getNextRow()
int	getRowNum() Get row number.
void	insertRow(byte[][] data) Insert row at current position.
boolean	isAfterLast()
boolean	isBeforeFirst()
boolean	isEmpty()
boolean	isFirst()
boolean	isLast()
boolean	last() Move cursor to the last row.
boolean	next() Move to next row.
boolean	previous() Move cursor to the previous row.
boolean	relative(int row) Move cursor relative to the current row.
void	setFetchSize(int fetchSize) Get the suggested number of rows to fetch with each batch fetch.
void	setIsAfterLast(boolean isAfterLastValue)
void	setIsBeforeFirst(boolean isBeforeFirstValue)
void	setIsEmpty(boolean isEmptyValue)
void	setIsFirst(boolean isFirstValue)
void	setIsLast(boolean isLastValue)
protected void	setNextRow(byte[][] nextRow)
void	setRowNum(int rowNumValue)
void	updateRow(byte[][] data) Update row at current position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

gdsHelper

protected GDSHelper gdsHelper

fetcherListener

protected FBObjectListener.FetcherListener fetcherListener

maxRows

protected int maxRows

fetchSize

protected int fetchSize

syncProvider

protected Synchronizable syncProvider

stmt

protected AbstractIscStmtHandle stmt

_nextRow

protected byte[][] _nextRow

MAX_FETCH_ROWS

public static final int MAX_FETCH_ROWS

See Also:

Constant Field Values

Method Detail

next

public boolean next()
             throws SQLException

Move to next row.

Returns:

true if cursor was moved.

Throws:

SQLException - if something went wrong.

isLast

public boolean isLast()
               throws SQLException

Throws:

SQLException

getNextRow

protected byte[][] getNextRow()
                       throws SQLException

Throws:

SQLException

setNextRow

protected void setNextRow(byte[][] nextRow)

absolute

public boolean absolute(int row)
                 throws SQLException

Move cursor to the absolute row.

Parameters:

row - absolute row number.

Returns:

true if cursor was successfully moved.

Throws:

SQLException - if something went wrong.

first

public boolean first()
              throws SQLException

Move cursor to the rist row.

Returns:

true if cursor was moved to the first row.

Throws:

SQLException - if something went wrong.

last

public boolean last()
             throws SQLException

Move cursor to the last row.

Returns:

true if cursor was moved to the last row.

Throws:

SQLException - if something went wrong.

previous

public boolean previous()
                 throws SQLException

Move cursor to the previous row.

Returns:

true if cursor was moved to the prevous row.

Throws:

SQLException - if something went wrong.

relative

public boolean relative(int row)
                 throws SQLException

Move cursor relative to the current row.

Parameters:

row - relative row position.

Returns:

true if cursor was successfully moved.

Throws:

SQLException - if something went wrong.

beforeFirst

public void beforeFirst()
                 throws SQLException

Move cursor before first record.

Throws:

SQLException - if something went wrong.

afterLast

public void afterLast()
               throws SQLException

Move cursor after last record.

Throws:

SQLException - if something went wrong.

fetch

public void fetch()
           throws SQLException

Throws:

SQLException

close

public void close()
           throws SQLException

Close this fetcher and corresponding result set.

Throws:

SQLException - if something went wrong.

getRowNum

public int getRowNum()

Get row number.

Returns:

row number.

setRowNum

public void setRowNum(int rowNumValue)

isEmpty

public boolean isEmpty()
                throws SQLException

Throws:

SQLException

setIsEmpty

public void setIsEmpty(boolean isEmptyValue)

isBeforeFirst

public boolean isBeforeFirst()
                      throws SQLException

Throws:

SQLException

setIsBeforeFirst

public void setIsBeforeFirst(boolean isBeforeFirstValue)

isFirst

public boolean isFirst()
                throws SQLException

Throws:

SQLException

setIsFirst

public void setIsFirst(boolean isFirstValue)

setIsLast

public void setIsLast(boolean isLastValue)

isAfterLast

public boolean isAfterLast()
                    throws SQLException

Throws:

SQLException

setIsAfterLast

public void setIsAfterLast(boolean isAfterLastValue)

deleteRow

public void deleteRow()
               throws SQLException

Delete row at current position. This method deletes a row at the current position in case of updatable result sets after successfull execution of the ResultSet#deleteRow() method.

Throws:

SQLException - if operation cannot be completed.

insertRow

public void insertRow(byte[][] data)
               throws SQLException

Insert row at current position. This method adds a row at the current position in case of updatable result sets after successfull execution of the ResultSet#insertRow() method.

Parameters:

data - row data

Throws:

SQLException - if operation cannot be completed.

updateRow

public void updateRow(byte[][] data)
               throws SQLException

Update row at current position. This method updates a row at the current position in case of updatable result sets after successfull execution of the ResultSet#updateRow() method.

Parameters:

data - row data

Throws:

SQLException - if operation cannot be completed.

setFetchSize

public void setFetchSize(int fetchSize)

Get the suggested number of rows to fetch with each batch fetch.

Parameters:

fetchSize - The suggested number of rows to fetch

getFetchSize

public int getFetchSize()

Set the suggested number of rows to fetch with each batch fetch.

Returns:

The number of rows to be fetched