com.healthmarketscience.jackcess.impl

Class TableImpl.RowState

java.lang.Object

com.healthmarketscience.jackcess.impl.TableImpl.WriteRowState

com.healthmarketscience.jackcess.impl.TableImpl.RowState

All Implemented Interfaces:

ErrorHandler.Location

Enclosing class:

TableImpl

public final class TableImpl.RowState
extends TableImpl.WriteRowState
implements ErrorHandler.Location

Maintains the state of reading/updating a row of data.

Field Summary

Fields

Modifier and Type	Field and Description
private ErrorHandler	_errorHandler optional error handler to use when row errors are encountered
private java.nio.ByteBuffer	_finalRowBuffer the row buffer which contains the final data (after following any overflow pointers)
private RowIdImpl	_finalRowId the rowId which contains the final data (after following any overflow pointers)
private boolean	_haveRowValues true if the row values array has data
private TempPageHolder	_headerRowBufferH Buffer used for reading the header row data pages
private RowIdImpl	_headerRowId the header rowId
private int	_lastModCount last modification count seen on the table we track this so that the rowState can detect updates to the table and re-read any buffered data
private NullMask	_nullMask null mask for the last row
private TempPageHolder	_overflowRowBufferH buffer used for reading overflow pages
private int	_rowsOnHeaderPage the number of rows on the header page
private TableImpl.RowStatus	_rowStatus the row status
private java.lang.Object[]	_rowValues values read from the last row
private TableImpl.RowStateStatus	_status the rowState status
private short[]	_varColOffsets cached variable column offsets for jump-table based rows

Constructor Summary

Constructors

Modifier	Constructor and Description
private	RowState(TempBufferHolder.Type headerType)

Method Summary

Modifier and Type	Method and Description
private void	checkForModification()
ErrorHandler	getErrorHandler()
private java.nio.ByteBuffer	getFinalPage()
RowIdImpl	getFinalRowId()
private java.nio.ByteBuffer	getHeaderPage()
RowIdImpl	getHeaderRowId()
NullMask	getNullMask(java.nio.ByteBuffer rowBuffer)
private java.lang.Object	getRowCacheValue(int idx)
java.lang.Object[]	getRowCacheValues()
int	getRowsOnHeaderPage()
TableImpl	getTable()
private short[]	getVarColOffsets()
private java.lang.Object	handleRowError(ColumnImpl column, byte[] columnData, java.lang.Exception error)
boolean	isAtFinalRow()
boolean	isAtHeaderRow()
boolean	isDeleted()
boolean	isHeaderPageNumberValid()
boolean	isHeaderRowNumberValid()
boolean	isOverflow()
boolean	isUpToDate()
boolean	isValid()
void	reset()
void	setErrorHandler(ErrorHandler newErrorHandler)
private java.nio.ByteBuffer	setHeaderRow(RowIdImpl rowId)
private java.nio.ByteBuffer	setOverflowRow(RowIdImpl rowId)
private java.lang.Object	setRowCacheValue(int idx, java.lang.Object value)
private void	setRowStatus(TableImpl.RowStatus rowStatus)
private void	setStatus(TableImpl.RowStateStatus status)
private void	setVarColOffsets(short[] varColOffsets)
java.lang.String	toString() Contains details about the errored row, useful for debugging.

Methods inherited from class com.healthmarketscience.jackcess.impl.TableImpl.WriteRowState

getComplexAutoNumber, resetAutoNumber, setComplexAutoNumber

Methods inherited from class java.lang.Object

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

Field Detail

_headerRowBufferH

private final TempPageHolder _headerRowBufferH

Buffer used for reading the header row data pages

_headerRowId

private RowIdImpl _headerRowId

the header rowId

_rowsOnHeaderPage

private int _rowsOnHeaderPage

the number of rows on the header page

_status

private TableImpl.RowStateStatus _status

the rowState status

_rowStatus

private TableImpl.RowStatus _rowStatus

the row status

_overflowRowBufferH

private final TempPageHolder _overflowRowBufferH

buffer used for reading overflow pages

_finalRowBuffer

private java.nio.ByteBuffer _finalRowBuffer

the row buffer which contains the final data (after following any overflow pointers)

_finalRowId

private RowIdImpl _finalRowId

the rowId which contains the final data (after following any overflow pointers)

_haveRowValues

private boolean _haveRowValues

true if the row values array has data

_rowValues

private final java.lang.Object[] _rowValues

values read from the last row

_nullMask

private NullMask _nullMask

null mask for the last row

_lastModCount

private int _lastModCount

last modification count seen on the table we track this so that the rowState can detect updates to the table and re-read any buffered data

_errorHandler

private ErrorHandler _errorHandler

optional error handler to use when row errors are encountered

_varColOffsets

private short[] _varColOffsets

cached variable column offsets for jump-table based rows

Constructor Detail

RowState

private RowState(TempBufferHolder.Type headerType)

Method Detail

getTable

public TableImpl getTable()

Specified by:

getTable in interface ErrorHandler.Location

Returns:

the table in which the error occurred

getErrorHandler

public ErrorHandler getErrorHandler()

setErrorHandler

public void setErrorHandler(ErrorHandler newErrorHandler)

reset

public void reset()

isUpToDate

public boolean isUpToDate()

checkForModification

private void checkForModification()

getFinalPage

private java.nio.ByteBuffer getFinalPage()
                                  throws java.io.IOException

Throws:

java.io.IOException

getFinalRowId

public RowIdImpl getFinalRowId()

setRowStatus

private void setRowStatus(TableImpl.RowStatus rowStatus)

isValid

public boolean isValid()

isDeleted

public boolean isDeleted()

isOverflow

public boolean isOverflow()

isHeaderPageNumberValid

public boolean isHeaderPageNumberValid()

isHeaderRowNumberValid

public boolean isHeaderRowNumberValid()

setStatus

private void setStatus(TableImpl.RowStateStatus status)

isAtHeaderRow

public boolean isAtHeaderRow()

isAtFinalRow

public boolean isAtFinalRow()

setRowCacheValue

private java.lang.Object setRowCacheValue(int idx,
                                          java.lang.Object value)

getRowCacheValue

private java.lang.Object getRowCacheValue(int idx)

getRowCacheValues

public java.lang.Object[] getRowCacheValues()

getNullMask

public NullMask getNullMask(java.nio.ByteBuffer rowBuffer)
                     throws java.io.IOException

Throws:

java.io.IOException

getVarColOffsets

private short[] getVarColOffsets()

setVarColOffsets

private void setVarColOffsets(short[] varColOffsets)

getHeaderRowId

public RowIdImpl getHeaderRowId()

getRowsOnHeaderPage

public int getRowsOnHeaderPage()

getHeaderPage

private java.nio.ByteBuffer getHeaderPage()
                                   throws java.io.IOException

Throws:

java.io.IOException

setHeaderRow

private java.nio.ByteBuffer setHeaderRow(RowIdImpl rowId)
                                  throws java.io.IOException

Throws:

java.io.IOException

setOverflowRow

private java.nio.ByteBuffer setOverflowRow(RowIdImpl rowId)
                                    throws java.io.IOException

Throws:

java.io.IOException

handleRowError

private java.lang.Object handleRowError(ColumnImpl column,
                                        byte[] columnData,
                                        java.lang.Exception error)
                                 throws java.io.IOException

Throws:

java.io.IOException

toString

public java.lang.String toString()

Description copied from interface: ErrorHandler.Location

Contains details about the errored row, useful for debugging.

Specified by:

toString in interface ErrorHandler.Location

Overrides:

toString in class java.lang.Object