at.mug.iqm.api.processing

Class ProcessingHistory

java.lang.Object

at.mug.iqm.api.processing.ProcessingHistory

public class ProcessingHistory
extends Object

This class represents a record of the subsequent execution of operators. Within the execution framework, each call of an operator is recorded along the parameters passed and enables the reconstruction of complex processing chains.

The history is unique in an application context designed as static class.

Since:

3.1

Author:

Philipp Kainz

Field Summary

Fields

Modifier and Type	Field and Description
private List<HistoryEntry>	entries The list of entries.
private static ProcessingHistory	instance The singleton instance.
private SimpleDateFormat	sdf

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ProcessingHistory() Private constructor.

Method Summary

Modifier and Type	Method and Description
void	add(HistoryEntry he) Adds an entry to the processing history.
void	add(IWorkPackage wp) Adds an entry to the processing history.
List<HistoryEntry>	getEntries() Gets the entries as a list of HistoryEntry instances.
static ProcessingHistory	getInstance() Gets the singleton instance of the processing history.
String	listEntries() Concatenates all entries to a string representation.

Methods inherited from class java.lang.Object

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

Field Detail

entries

private List<HistoryEntry> entries

The list of entries.

instance

private static ProcessingHistory instance

The singleton instance.

sdf

private SimpleDateFormat sdf

Constructor Detail

ProcessingHistory

private ProcessingHistory()

Private constructor.

Method Detail

getInstance

public static ProcessingHistory getInstance()

Gets the singleton instance of the processing history.

Returns:

a reference to the singleton

getEntries

public List<HistoryEntry> getEntries()

Gets the entries as a list of HistoryEntry instances.

Returns:

listEntries

public String listEntries()

Concatenates all entries to a string representation.

Returns:

a String with the entries in reverse chronological order (latest execution first)

add

public void add(HistoryEntry he)

Adds an entry to the processing history.

Parameters:

he - the entry

add

public void add(IWorkPackage wp)

Adds an entry to the processing history.

Parameters:

wp - the work package