ptolemy.backtrack.util

Class FieldRecordState

java.lang.Object

ptolemy.backtrack.util.FieldRecordState

public class FieldRecordState
extends java.lang.Object

The state of a field record. A field record records the changes in a field. Each Rollbackable object may have 0 or more field records. The information of a field record is kept in a field record state. When a new checkpoint object is assigned to the Rollbackable object, its previous field record states are pushed on to stacks, and new states are allocated. When the previous checkpoint object is restored to the Rollbackable object, the previous field record states are popped out.

Since:

Ptolemy II 5.1

Version:

$Id$

Author:

Thomas Feng

Pt.AcceptedRating:

Red (tfeng)

Pt.ProposedRating:

Red (tfeng)

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FieldRecordState(int dimensions) Construct a field record.

Method Summary

Modifier and Type	Method and Description
protected int	_decreaseTotalNum() Decrease the total number of changes recorded in this field record state by 1.
protected int	_getIdentifier() Get the identifier of this field record state.
protected FieldRecord.RecordList[]	_getRecords() Get the array of change history for different numbers of indices.
protected int	_getTotalNum() Get the total number of changes recorded in this field record state.
protected int	_increaseIdentifier() Increase the identifier of this field record state by 1.
protected int	_increaseTotalNum() Increase the total number of changes recorded in this field record state by 1.
protected void	_setTotalNum(int totalNum) Set the total number of changes recorded in this field record state.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldRecordState

protected FieldRecordState(int dimensions)

Construct a field record.

Parameters:

dimensions - The number of dimensions of this field.

Method Detail

_decreaseTotalNum

protected int _decreaseTotalNum()

Decrease the total number of changes recorded in this field record state by 1.

Returns:

The new total number of changes recorded.

See Also:

_getTotalNum(), _increaseTotalNum(), _setTotalNum(int)

_getIdentifier

protected int _getIdentifier()

Get the identifier of this field record state.

Returns:

The identifier.

_getRecords

protected FieldRecord.RecordList[] _getRecords()

Get the array of change history for different numbers of indices.

Returns:

The array of change history.

_getTotalNum

protected int _getTotalNum()

Get the total number of changes recorded in this field record state.

Returns:

The total number of changes.

See Also:

_setTotalNum(int)

_increaseIdentifier

protected int _increaseIdentifier()

Increase the identifier of this field record state by 1.

Returns:

The new identifier.

See Also:

_getIdentifier()

_increaseTotalNum

protected int _increaseTotalNum()

Increase the total number of changes recorded in this field record state by 1.

Returns:

The new total number of changes recorded.

See Also:

_decreaseTotalNum(), _getTotalNum(), _setTotalNum(int)

_setTotalNum

protected void _setTotalNum(int totalNum)

Set the total number of changes recorded in this field record state.

Parameters:

totalNum - The new total number of changes.

See Also:

_getTotalNum()