jsdai.lang
Class SdaiLoggingEvent

java.lang.Object
  java.util.EventObject
      jsdai.lang.SdaiEvent
          jsdai.lang.SdaiLoggingEvent

All Implemented Interfaces:

java.io.Serializable

public class SdaiLoggingEvent

extends SdaiEvent

This class informs SDAI listeners about changes done in the undo/redo log file. The subclasses of this class support iterating over entity instances for which some changes (due to their modification, creation, deletion or substitution) were recorded in the log file for subsequent undo/redo operations. The records are divided into segments called groups. The subclasses allow iteration over records of one group in one of the two directions: from the first record to the last one, or vice versa.

Since:

4.1.0

See Also:

Serialized Form

Field Summary

static int	DISABLED_LOGGING Logging of data for subsequent undo/redo operations is disabled.
static int	EMPTIED_HISTORY The undo/redo log file exists but is empty.
static int	ENABLED_LOGGING Logging of data for subsequent undo/redo operations is enabled.
static int	ENDED_UNDO_GROUP A group of records in undo/redo log file is ended.
static int	REDONE_GROUP The redo operation is applied to one group of records in the undo/redo log file.
static int	STARTING_UNDO_GROUP A group of records in undo/redo log file is started.
static int	UNDONE_GROUP The undo operation is applied to one group of records in the undo/redo log file.

Fields inherited from class jsdai.lang.SdaiEvent

INVALID, ITEM_ALL, ITEM_CONTENTS, ITEM_HEADER, LOCKED_EXCLUSIVE_MODE, LOCKED_SHARED_MODE, MODIFIED, SERVER_DATA_CHANGED, UNLOCKED_ALL, UNLOCKED_EXCLUSIVE_MODE, UNLOCKED_SHARED_MODE

Method Summary

SdaiOperationIterator

getOperationIterator() Returns an object of SdaiOperationIterator with fields assigned to default values.

Methods inherited from class jsdai.lang.SdaiEvent

getArgument, getId, getItem

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ENABLED_LOGGING

public static final int ENABLED_LOGGING

Logging of data for subsequent undo/redo operations is enabled.

See Also:

Constant Field Values

DISABLED_LOGGING

public static final int DISABLED_LOGGING

Logging of data for subsequent undo/redo operations is disabled.

See Also:

Constant Field Values

EMPTIED_HISTORY

public static final int EMPTIED_HISTORY

The undo/redo log file exists but is empty.

See Also:

Constant Field Values

STARTING_UNDO_GROUP

public static final int STARTING_UNDO_GROUP

A group of records in undo/redo log file is started.

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Constant Field Values

ENDED_UNDO_GROUP

public static final int ENDED_UNDO_GROUP

A group of records in undo/redo log file is ended.

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Constant Field Values

UNDONE_GROUP

public static final int UNDONE_GROUP

The undo operation is applied to one group of records in the undo/redo log file.

See Also:

Constant Field Values

REDONE_GROUP

public static final int REDONE_GROUP

The redo operation is applied to one group of records in the undo/redo log file.

See Also:

Constant Field Values

Method Detail

getOperationIterator

public SdaiOperationIterator getOperationIterator()
                                           throws SdaiException

Returns an object of SdaiOperationIterator with fields assigned to default values.

Returns:

the iterator over instances within one group of records in undo/redo log file.

Throws:

SdaiException