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SEWOL provides support for the handling of workflow traces. Specifically it allows to specify the shape and content of process traces in terms of entries representing the execution of a specific workflow activity. SEWOL also allows to write these traces on disk as a log file with the help of a special file writer for process logs. Currently it supports plain text, Petrify, MXML and XES log file types. In order to specify security-related context information, SEWOL provides access control models such as access control lists (ACL) and role-based access control models (RBAC). All types of models can be conveniently edited with the help of appropriate dialogs.
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/*
* OpenXES
*
* The reference implementation of the XES meta-model for event
* log data management.
*
* Copyright (c) 2008 Christian W. Guenther ([email protected])
*
*
* LICENSE:
*
* This code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
* EXEMPTION:
*
* The use of this software can also be conditionally licensed for
* other programs, which do not satisfy the specified conditions. This
* requires an exemption from the general license, which may be
* granted on a per-case basis.
*
* If you want to license the use of this software with a program
* incompatible with the LGPL, please contact the author for an
* exemption at the following email address:
* [email protected]
*
*/
package org.deckfour.xes.extension.std;
import java.net.URI;
import org.deckfour.xes.extension.XExtension;
import org.deckfour.xes.factory.XFactory;
import org.deckfour.xes.factory.XFactoryRegistry;
import org.deckfour.xes.info.XGlobalAttributeNameMap;
import org.deckfour.xes.model.XAttribute;
import org.deckfour.xes.model.XAttributeLiteral;
import org.deckfour.xes.model.XEvent;
import org.deckfour.xes.model.XLog;
/**
* Extension defining additional attributes for the event lifecycle.
*
* Lifecycles define a set of states for activities, with an accompanying set of
* transitions between those states. Any event which is referring to by a
* lifecycle represents a certain transition of an activity within that
* lifecycle.
*
* @author Christian W. Guenther ([email protected])
*
*/
public class XLifecycleExtension extends XExtension {
/**
*
*/
private static final long serialVersionUID = 7368474477345685085L;
/**
* Enumeration for the standard lifecycle model.
*
* @author Christian W. Guenther ([email protected])
*/
public enum StandardModel {
SCHEDULE("schedule"), ASSIGN("assign"), WITHDRAW("withdraw"), REASSIGN(
"reassign"), START("start"), SUSPEND("suspend"), RESUME(
"resume"), PI_ABORT("pi_abort"), ATE_ABORT("ate_abort"), COMPLETE(
"complete"), AUTOSKIP("autoskip"), MANUALSKIP("manualskip"), UNKNOWN(
"unknown");
/**
* Encoding string, i.e. name.
*/
private final String encoding;
/**
* Creates a new instance.
*
* @param encoding
* Encoding of transition.
*/
private StandardModel(String encoding) {
this.encoding = encoding;
}
/**
* Retrieves the encoding of the standard transition.
*
* @return Encoding of this standard transition.
*/
public String getEncoding() {
return encoding;
}
/**
* Decodes any encoding string, referring to the respective
* standard-model lifecycle transition object in this enum.
*
* @param encoding
* Encoding string.
* @return Standard-model transition.
*/
public static StandardModel decode(String encoding) {
encoding = encoding.trim().toLowerCase();
for (StandardModel transition : StandardModel.values()) {
if (transition.encoding.equals(encoding)) {
return transition;
}
}
return StandardModel.UNKNOWN;
}
}
/**
* The unique URI of this extension.
*/
public static final URI EXTENSION_URI = URI
.create("http://www.xes-standard.org/lifecycle.xesext");
/**
* Key for the lifecycle model attribute.
*/
public static final String KEY_MODEL = "lifecycle:model";
/**
* Key for the transition attribute.
*/
public static final String KEY_TRANSITION = "lifecycle:transition";
/**
* Value for the lifecycle model attribute referring to the standard model.
*/
public static final String VALUE_MODEL_STANDARD = "standard";
/**
* Lifecycle model attribute prototype
*/
public static XAttributeLiteral ATTR_MODEL;
/**
* Transition attribute prototype
*/
public static XAttributeLiteral ATTR_TRANSITION;
/**
* Singleton instance of this extension.
*/
private static XLifecycleExtension singleton = new XLifecycleExtension();
/**
* Provides static access to the singleton instance of this extension.
*
* @return Singleton instance.
*/
public static XLifecycleExtension instance() {
return singleton;
}
private Object readResolve() {
return singleton;
}
/**
* Creates a new instance (hidden constructor).
*/
private XLifecycleExtension() {
super("Lifecycle", "lifecycle", EXTENSION_URI);
XFactory factory = XFactoryRegistry.instance().currentDefault();
ATTR_MODEL = factory.createAttributeLiteral(KEY_MODEL,
VALUE_MODEL_STANDARD, this);
ATTR_TRANSITION = factory.createAttributeLiteral(KEY_TRANSITION,
StandardModel.COMPLETE.getEncoding(), this);
this.logAttributes.add((XAttributeLiteral) ATTR_MODEL.clone());
this.eventAttributes.add((XAttributeLiteral) ATTR_TRANSITION.clone());
// register aliases
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_ENGLISH, KEY_MODEL,
"Lifecycle Model");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_ENGLISH, KEY_TRANSITION,
"Lifecycle Transition");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_GERMAN, KEY_MODEL,
"Lebenszyklus-Model");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_GERMAN, KEY_TRANSITION,
"Lebenszyklus-Transition");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_FRENCH, KEY_MODEL,
"Modèle du Cycle Vital");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_FRENCH, KEY_TRANSITION,
"Transition en Cycle Vital");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_SPANISH, KEY_MODEL,
"Modelo de Ciclo de Vida");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_SPANISH, KEY_TRANSITION,
"Transición en Ciclo de Vida");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_PORTUGUESE, KEY_MODEL,
"Modelo do Ciclo de Vida");
XGlobalAttributeNameMap.instance().registerMapping(
XGlobalAttributeNameMap.MAPPING_PORTUGUESE, KEY_TRANSITION,
"Transição do Ciclo de Vida");
}
/**
* Extracts the lifecycle model identifier from a given log.
*
* @param log
* Event log.
* @return Lifecycle model identifier string.
*/
public String extractModel(XLog log) {
XAttribute attribute = log.getAttributes().get(KEY_MODEL);
if (attribute == null) {
return null;
} else {
return ((XAttributeLiteral) attribute).getValue();
}
}
/**
* Assigns a value for the lifecycle model identifier to a given log.
*
* @param log
* Log to be tagged.
* @param model
* Lifecycle model identifier string to be used.
*/
public void assignModel(XLog log, String model) {
if (model != null && model.trim().length() > 0) {
XAttributeLiteral modelAttr = (XAttributeLiteral) ATTR_MODEL
.clone();
modelAttr.setValue(model.trim());
log.getAttributes().put(KEY_MODEL, modelAttr);
}
}
/**
* Checks, whether a given log uses the standard model for lifecycle
* transitions.
*
* @param log
* Log to be checked.
* @return Returns true, if the log indeed uses the standard lifecycle
* model.
*/
public boolean usesStandardModel(XLog log) {
String model = extractModel(log);
if (model == null) {
return false;
} else if (model.trim().equals(VALUE_MODEL_STANDARD)) {
return true;
} else {
return false;
}
}
/**
* Extracts the lifecycle transition string from a given event.
*
* @param event
* An event.
* @return The lifecycle transition string of this event. Can be
* null, if not defined.
*/
public String extractTransition(XEvent event) {
XAttribute attribute = event.getAttributes().get(KEY_TRANSITION);
if (attribute == null) {
return null;
} else {
return ((XAttributeLiteral) attribute).getValue();
}
}
/**
* Extracts the standard lifecycle transition object from a given event.
*
* @param event
* An event.
* @return The standard lifecycle transition instance of this event. Can be
* null, if not defined.
*/
public StandardModel extractStandardTransition(XEvent event) {
String transition = extractTransition(event);
if (transition != null) {
return StandardModel.decode(transition);
} else {
return null;
}
}
/**
* Assigns a lifecycle transition string to the given event.
*
* @param event
* Event to be tagged.
* @param transition
* Lifecycle transition string to be assigned.
*/
public void assignTransition(XEvent event, String transition) {
if (transition != null && transition.trim().length() > 0) {
XAttributeLiteral transAttr = (XAttributeLiteral) ATTR_TRANSITION
.clone();
transAttr.setValue(transition.trim());
event.getAttributes().put(KEY_TRANSITION, transAttr);
}
}
/**
* Assigns a standard lifecycle transition to the given event.
*
* @param event
* Event to be tagged.
* @param transition
* Standard lifecycle transition to be assigned.
*/
public void assignStandardTransition(XEvent event, StandardModel transition) {
assignTransition(event, transition.getEncoding());
}
}