com.healthmarketscience.jackcess.impl
Class TableScanCursor

java.lang.Object
  com.healthmarketscience.jackcess.impl.CursorImpl
      com.healthmarketscience.jackcess.impl.TableScanCursor

All Implemented Interfaces:

Cursor, Iterable<Row>

public class TableScanCursor
extends CursorImpl

Simple un-indexed cursor.

Author:

James Ahlborn

Nested Class Summary

Nested classes/interfaces inherited from class com.healthmarketscience.jackcess.impl.CursorImpl

CursorImpl.BaseIterator, CursorImpl.DirHandler, CursorImpl.IdImpl, CursorImpl.PositionImpl, CursorImpl.SavepointImpl

Nested classes/interfaces inherited from interface com.healthmarketscience.jackcess.Cursor

Cursor.Id, Cursor.Position, Cursor.Savepoint

Field Summary

Fields inherited from class com.healthmarketscience.jackcess.impl.CursorImpl

_columnMatcher, _curPos, _prevPos, MOVE_FORWARD, MOVE_REVERSE

Constructor Summary

TableScanCursor(TableImpl table)

Method Summary

protected CursorImpl.PositionImpl	findAnotherPosition(TableImpl.RowState rowState, CursorImpl.PositionImpl curPos, boolean moveForward) Finds the next non-deleted row after the given row (as defined by this cursor) and returns the id of the row, where "next" may be backwards if moveForward is false.
protected com.healthmarketscience.jackcess.impl.TableScanCursor.ScanDirHandler	getDirHandler(boolean moveForward) Returns the DirHandler for the given movement direction.
protected CursorImpl.PositionImpl	getRowPosition(RowIdImpl rowId) Returns the appropriate position information for the given row (which is the current row and is valid).
protected boolean	isUpToDate() Returns true if this cursor is up-to-date with respect to the relevant table and related table objects, false otherwise.
protected void	reset(boolean moveForward) Resets this cursor for traversing the given direction.
protected void	restorePositionImpl(CursorImpl.PositionImpl curPos, CursorImpl.PositionImpl prevPos) Restores a current and previous position for the cursor.

Methods inherited from class com.healthmarketscience.jackcess.impl.CursorImpl

afterLast, beforeFirst, createCursor, currentRowMatches, currentRowMatches, currentRowMatches, currentRowMatchesImpl, currentRowMatchesImpl, deleteCurrentRow, findAnotherRow, findAnotherRow, findAnotherRowImpl, findAnotherRowImpl, findFirstRow, findFirstRow, findFirstRow, findNextRow, findNextRow, findNextRow, findRow, getColumnMatcher, getCurrentRow, getCurrentRow, getCurrentRowValue, getCurrentRowValue, getDefaultColumnMatcher, getErrorHandler, getFirstPosition, getFormat, getId, getLastPosition, getNextRow, getNextRow, getPageChannel, getPreviousRow, getPreviousRow, getRowState, getSavepoint, getTable, isAfterLast, isAtBeginning, isBeforeFirst, isCurrentRowDeleted, isCurrentRowValid, iterator, iterator, keepSearching, moveNextRows, movePreviousRows, moveToAnotherRow, moveToNextRow, moveToPreviousRow, newIterable, prepareSearchInfo, prepareSearchInfo, reset, restorePosition, restorePosition, restoreSavepoint, restoreSavepoint, setColumnMatcher, setCurrentRowValue, setCurrentRowValue, setErrorHandler, toString, updateCurrentRow, updateCurrentRowFromMap

Methods inherited from class java.lang.Object

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

Constructor Detail

TableScanCursor

public TableScanCursor(TableImpl table)

Method Detail

getDirHandler

protected com.healthmarketscience.jackcess.impl.TableScanCursor.ScanDirHandler getDirHandler(boolean moveForward)

Description copied from class: CursorImpl

Returns the DirHandler for the given movement direction.

Specified by:

getDirHandler in class CursorImpl

isUpToDate

protected boolean isUpToDate()

Description copied from class: CursorImpl

Returns true if this cursor is up-to-date with respect to the relevant table and related table objects, false otherwise.

Overrides:

isUpToDate in class CursorImpl

reset

protected void reset(boolean moveForward)

Description copied from class: CursorImpl

Resets this cursor for traversing the given direction.

Overrides:

reset in class CursorImpl

restorePositionImpl

protected void restorePositionImpl(CursorImpl.PositionImpl curPos,
                                   CursorImpl.PositionImpl prevPos)
                            throws IOException

Description copied from class: CursorImpl

Restores a current and previous position for the cursor.

Overrides:

restorePositionImpl in class CursorImpl

Throws:

IOException

getRowPosition

protected CursorImpl.PositionImpl getRowPosition(RowIdImpl rowId)
                                          throws IOException

Description copied from class: CursorImpl

Returns the appropriate position information for the given row (which is the current row and is valid).

Specified by:

getRowPosition in class CursorImpl

Throws:

IOException

findAnotherPosition

protected CursorImpl.PositionImpl findAnotherPosition(TableImpl.RowState rowState,
                                                      CursorImpl.PositionImpl curPos,
                                                      boolean moveForward)
                                               throws IOException

Description copied from class: CursorImpl

Finds the next non-deleted row after the given row (as defined by this cursor) and returns the id of the row, where "next" may be backwards if moveForward is false. If there are no more rows, the returned rowId should equal the value returned by CursorImpl.getLastPosition() if moving forward and CursorImpl.getFirstPosition() if moving backward.

Specified by:

findAnotherPosition in class CursorImpl

Throws:

IOException