static ArrayList<String> checkForNewTransitionsAndPlaces(
String sRead, ArrayList<Transition> transitions, ArrayList<Place> places, PetriNet pn) {
ArrayList<String> stParts = new ArrayList<String>(Arrays.asList(sRead.split(" ")));
int k;
for (int i = 0; i < stParts.size(); i++) {
String st = stParts.get(i);
if (isPlace(st)) {
if (findPlace(st, places) == null) {
Place p = new Place(st, pn);
pn.addPlace(p);
places.add(p);
}
} else {
st = repairTransitionString(st);
k = st.indexOf(PetrifyConstants.EDGEDOCSSEPARATOR);
if (k != -1) {
if (findTransition(st, transitions) == null) {
Transition t = new Transition(new LogEvent(st, ""), pn);
pn.addTransition(t);
t.setIdentifier(st);
transitions.add(t);
}
}
}
}
return stParts;
}
public static Transition findTransition(String identifier, ArrayList<Transition> transitions) {
for (Transition t : transitions) {
if (t.getIdentifier().equals(identifier)) {
return t;
}
}
return null;
}
static void makeEndsBlack(ArrayList<Transition> transitions) {
for (int i = 0; i < transitions.size(); i++) {
Transition t = transitions.get(i);
String id = t.toString();
if (id.length() > 2 && id.substring(0, 3).equals("END")) {
t.setLogEvent(null);
}
}
}
/**
* This is the edge writing part of the {@link #writeToDot writeToDot} procedure. This part of the
* visualization gets affected by the probabilities that are displayed at XOR-splits.
*
* @param bw the writer used by the framework to create the temporary dot file
* @throws IOException if writing to the writer fails
* @todo Peter: figure out how to place the probabilities at the tail of the edge
*/
protected void writeEdgesToDot(Writer bw) throws IOException {
try {
Iterator it = this.getEdges().iterator();
while (it.hasNext()) {
ExtendedPNEdge e = (ExtendedPNEdge) (it.next());
if (e.isPT()) {
ExtendedPlace p = (ExtendedPlace) e.getSource();
Transition t = (Transition) e.getDest();
if (p.getOutEdges().size() > 1) {
// for all edges coming from places with more than one
// outgoing edge, display probability in 2 decimal
// digits
double prob =
e.getProbability(
currentlySelectedInstances,
p.getTotalOutEdgeFrequency(
currentlySelectedInstances, advancedSettings[1], failedInstances),
advancedSettings[1],
failedInstances);
DecimalFormat digits = new DecimalFormat();
digits.setMaximumFractionDigits(2);
digits.setMinimumFractionDigits(2);
String chance = digits.format(prob);
// replace commas with dots, since dot forces use of
// US-Locale
chance = chance.replace(",", ".");
bw.write("p" + p.getNumber() + " -> t" + t.getNumber() + " [label=" + chance + "];\n");
} else {
// write a normal edge
bw.write("p" + p.getNumber() + " -> t" + t.getNumber() + ";\n");
}
} else {
// write a normal edge
Place p = (Place) e.getDest();
Transition t = (Transition) e.getSource();
bw.write("t" + t.getNumber() + " -> p" + p.getNumber() + ";\n");
}
}
} catch (Exception ex) {
Message.add("Failure while updating the visualization.\n" + ex.toString(), 2);
ex.printStackTrace();
}
}
static void addFinalPlace(
ArrayList<Place> places, ArrayList<Transition> transitions, PetriNet pn) {
Place p = null;
boolean endTransitionsExist = false;
for (int i = 0; i < transitions.size(); i++) {
Transition t = transitions.get(i);
String id = t.toString();
if (id.length() > 2 && id.substring(0, 3).equals("END")) {
if (!endTransitionsExist) {
p = new Place("END", pn);
pn.addPlace(p);
places.add(p);
}
PNEdge finalEdge = new PNEdge(t, p);
pn.addEdge(finalEdge);
endTransitionsExist = true;
}
}
}
public static PetriNet convert(ConfigurableEPC baseEPC) {
HashMap<EPCFunction, Transition> functionActivityMapping;
HashMap<EPCConnector, Place> xorconnectorChoiceMapping;
// HV: Initialize the mappings.
functionActivityMapping = new HashMap<EPCFunction, Transition>();
xorconnectorChoiceMapping = new HashMap<EPCConnector, Place>();
// Check to use the weights if necessary
// HV: Add both mappings. On completion, these will be filledd.
PetriNet petrinet =
EPCToPetriNetConverter.convert(
baseEPC, new HashMap(), functionActivityMapping, xorconnectorChoiceMapping);
HashSet visible = new HashSet();
// HV: The next block is taken care of by the functionActivityMapping
// below.
/*
* Iterator it = petrinet.getTransitions().iterator(); while
* (it.hasNext()) { Transition t = (Transition) it.next(); if (t.object
* instanceof EPCFunction) { // if (t.getLogEvent() != null) { // Add
* transitions with LogEvent (i.e. referring to functions)
* visible.add(t); } }
*/
// HV: Prevent the places mapped onto from being reduced.
visible.addAll(functionActivityMapping.values());
visible.addAll(xorconnectorChoiceMapping.values());
Message.add(visible.toString(), Message.DEBUG);
Iterator it = petrinet.getPlaces().iterator();
while (it.hasNext()) {
Place p = (Place) it.next();
if (p.inDegree() * p.outDegree() == 0) {
// Add Initial and final places to visible, i.e. places that
// refer to in and output events
visible.add(p);
}
}
// Reduce the PetriNet with Murata rules, while keeping the visible ones
PetriNetReduction pnred = new PetriNetReduction();
pnred.setNonReducableNodes(visible);
HashMap pnMap = new HashMap(); // Used to map pre-reduction nodes to
// post-reduction nodes.
PetriNet reduced = pnred.reduce(petrinet, pnMap);
if (reduced != petrinet) {
// Update both mappings from pre-reduction nodes to post-reduction
// nodes.
HashMap<EPCFunction, Transition> newFunctionActivityMapping =
new HashMap<EPCFunction, Transition>();
for (EPCFunction function : functionActivityMapping.keySet()) {
Transition transition = (Transition) functionActivityMapping.get(function);
if (pnMap.keySet().contains(transition)) {
newFunctionActivityMapping.put(function, (Transition) pnMap.get(transition));
}
}
functionActivityMapping = newFunctionActivityMapping;
HashMap<EPCConnector, Place> newXorconnectorChoiceMapping =
new HashMap<EPCConnector, Place>();
for (EPCConnector connector : xorconnectorChoiceMapping.keySet()) {
Place place = (Place) xorconnectorChoiceMapping.get(connector);
if (pnMap.keySet().contains(place)) {
newXorconnectorChoiceMapping.put(connector, (Place) pnMap.get(place));
}
}
xorconnectorChoiceMapping = newXorconnectorChoiceMapping;
}
reduced.makeClusters();
// filter the \nunknown:normal
ArrayList<Transition> alTrans = reduced.getVisibleTasks();
for (int i = 0; i < alTrans.size(); i++) {
Transition t = alTrans.get(i);
String id = t.getIdentifier();
int idx = id.indexOf("\\nunknown:normal");
if (idx > 0) {
id = id.substring(0, idx);
}
// �˴������ֵ��ѯ�滻���е�label
String mappedId = htDict.get(id);
if (mappedId != null) {
t.setIdentifier(mappedId);
} else {
t.setIdentifier(id);
}
}
return reduced;
}
public static PetriNet read(InputStream input) throws IOException {
PetriNet pn = new PetriNet();
ArrayList<Transition> transitions = new ArrayList<Transition>();
ArrayList<Place> places = new ArrayList<Place>();
BufferedReader in = new BufferedReader(new InputStreamReader(input));
ArrayList<String> events;
ArrayList<String> stParts;
String sRead, s;
do { // go through comments
sRead = in.readLine();
} while (sRead.charAt(0) == '#');
sRead = in.readLine();
// get the set of events and create PN transitions
s = sRead.substring(sRead.indexOf(" ") + 2);
events = new ArrayList<String>(Arrays.asList(s.split(" ")));
for (String o : events) {
// Transition t = new Transition(o, pn);
o = repairTransitionString(o);
Transition t = new Transition(new LogEvent(o, ""), pn);
t.setIdentifier(o);
pn.addTransition(t);
transitions.add(t);
}
in.readLine();
// reading the main lines
sRead = in.readLine();
sRead = sRead.replace("/", PetrifyConstants.EDGEDOCSSEPARATOR); // dot
// doesn't
// eat
// '/'
// symbols
while (sRead.charAt(0) != '.') {
// look for new transitions (with "__") and new places and add them
// to the lists
stParts = checkForNewTransitionsAndPlaces(sRead, transitions, places, pn);
if (isPlace(stParts.get(0))) {
Place placeFirst = findPlace(stParts.get(0), places);
for (int i = 1; i < stParts.size(); i++) {
String stRepaired = repairTransitionString(stParts.get(i));
Transition aTransition = findTransition(stRepaired, transitions);
PNEdge newEdge = new PNEdge(placeFirst, aTransition);
pn.addEdge(newEdge);
}
} else {
String stRepaired = repairTransitionString(stParts.get(0));
Transition transitionFirst = findTransition(stRepaired, transitions);
for (int i = 1; i < stParts.size(); i++) {
Place aPlace = findPlace(stParts.get(i), places);
PNEdge newEdge = new PNEdge(transitionFirst, aPlace);
pn.addEdge(newEdge);
}
}
sRead = in.readLine();
sRead = sRead.replace("/", PetrifyConstants.EDGEDOCSSEPARATOR);
}
// makeEndsBlack(transitions); // end transitions must be black
addFinalPlace(places, transitions, pn);
return pn;
}
