com.hardcode.gdbms.engine.data.edition
Class RowTransactionSupport

java.lang.Object
  com.hardcode.gdbms.engine.data.edition.RowTransactionSupport

Direct Known Subclasses:

PKTransactionSupport

public class RowTransactionSupport
extends java.lang.Object

Field Summary

protected EditableDataSource	ds
protected InternalBuffer	internalBuffer
protected MetadataEditionSupport	mes

Constructor Summary

RowTransactionSupport(EditableDataSource ds, MetadataEditionSupport mes)

Method Summary

void	addField()
void	beginTrans(long rc)
void	close()
void	deleteRow(long rowId)
Value	getFieldValue(long rowIndex, int fieldId)
protected long	getOriginalRowIndex(long rowId)
long	getRowCount()
long	insertRow(Value[] values)
long	insertRowAt(long rowIndex, Value[] values)
void	removeField(int index)
void	restoreStatus()
void	saveStatus()
long	setFieldValue(long row, int fieldId, Value value, Value[] originalRow) Sets the value in the internal buffer and returns the row where it's inserted

Methods inherited from class java.lang.Object

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

Field Detail

internalBuffer

protected InternalBuffer internalBuffer

ds

protected EditableDataSource ds

mes

protected MetadataEditionSupport mes

Constructor Detail

RowTransactionSupport

public RowTransactionSupport(EditableDataSource ds,
                             MetadataEditionSupport mes)
                      throws DriverException

Throws:

DriverException

Method Detail

deleteRow

public void deleteRow(long rowId)
               throws DriverException

Throws:

DriverException

insertRow

public long insertRow(Value[] values)
               throws DriverException

Throws:

DriverException

insertRowAt

public long insertRowAt(long rowIndex,
                        Value[] values)
                 throws DriverException

Throws:

DriverException

beginTrans

public void beginTrans(long rc)
                throws DriverException

Throws:

DriverException

close

public void close()
           throws DriverException

Throws:

DriverException

See Also:

com.hardcode.gdbms.engine.data.edition.DataWare#rollBackTrans()

setFieldValue

public long setFieldValue(long row,
                          int fieldId,
                          Value value,
                          Value[] originalRow)
                   throws DriverException

Sets the value in the internal buffer and returns the row where it's inserted

Parameters:

row - virtual row index

fieldId - field id

value - value to be inserted

originalRow - row with the values of the row before the modification if it's the first time the row is modified. If it isn't can be null.

Returns:

Throws:

DriverException

getFieldValue

public Value getFieldValue(long rowIndex,
                           int fieldId)
                    throws DriverException

Throws:

DriverException

getRowCount

public long getRowCount()

getOriginalRowIndex

protected long getOriginalRowIndex(long rowId)

removeField

public void removeField(int index)

addField

public void addField()

saveStatus

public void saveStatus()

restoreStatus

public void restoreStatus()