private NodeToken backtrackCompletedToken( final NodeToken token, final ExecutionType executionType) { token.markBacktracked(); NodeTokenEvent.fireBacktrackedEvent(engine, token); List<ArcToken> parents = new ArrayList<ArcToken>(token.getChildTokens().size()); for (ArcToken childToken : token.getChildTokens()) { ArcToken parent = arcTokenMap.get(childToken); if (parent == null) { throw new RuntimeException("No backtrack found for: " + childToken); } parents.add(parent); } NodeToken backtrackToken = engine .getFactory() .newNodeToken(token.getProcess(), token.getNode(), executionType, parents, token); NodeTokenEvent.fireCreatedEvent(engine, backtrackToken); token.getProcess().addNodeToken(backtrackToken); shareTokenSets(backtrackToken, token); for (ArcToken parent : parents) { token.getProcess().removeActiveArcToken(parent); parent.markBacktracked(); ArcTokenEvent.fireBacktrackedEvent(engine, parent); parent.markComplete(backtrackToken); ArcTokenEvent.fireCompletedEvent(engine, parent); } return backtrackToken; }
public NodeToken backtrackDeadEnd(final NodeToken token) { token.markBacktracked(); NodeTokenEvent.fireBacktrackedEvent(engine, token); List<ArcToken> parents = new ArrayList<ArcToken>(token.getParentTokens().size()); for (ArcToken parent : token.getParentTokens()) { parent.markBacktracked(); ArcTokenEvent.fireBacktrackedEvent(engine, parent); ArcToken backtrackArcToken = engine .getFactory() .newArcToken(token.getProcess(), parent.getArc(), ExecutionType.UTurn, token); ArcTokenEvent.fireCreatedEvent(engine, backtrackArcToken); token.getChildTokens().add(backtrackArcToken); parents.add(backtrackArcToken); shareTokenSets(backtrackArcToken, parent); } NodeToken backtrackToken = engine .getFactory() .newNodeToken( token.getProcess(), token.getNode(), ExecutionType.Forward, parents, token); NodeTokenEvent.fireCreatedEvent(engine, backtrackToken); token.getProcess().addNodeToken(backtrackToken); shareTokenSets(backtrackToken, token); for (ArcToken parent : parents) { parent.markProcessed(); ArcTokenEvent.fireProcessedEvent(engine, parent); parent.markComplete(backtrackToken); ArcTokenEvent.fireCompletedEvent(engine, parent); } reactivateTokenSets(); return backtrackToken; }