示例#1
0
  @Override
  public void finalizeComplete(GraphProcess process) {
    process.setState(ProcessState.Completed);

    NodeToken parentToken = process.getParentToken();
    if (parentToken != null) {
      Engine engine = getParentEngine() == null ? newEngine(false) : getParentEngine();
      engine.complete(parentToken, Arc.DEFAULT_ARC);
    }
  }
  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;
  }
 private void shareTokenSets(final ArcToken newToken, final ArcToken origToken) {
   for (ArcTokenSetMember setMember : origToken.getTokenSetMemberships()) {
     TokenSet tokenSet = setMember.getTokenSet();
     ArcTokenSetMember newSetMember =
         engine.getFactory().newArcTokenSetMember(tokenSet, newToken, setMember.getMemberIndex());
     newToken.getTokenSetMemberships().add(newSetMember);
     tokenSet.getActiveArcTokens(engine).add(newToken);
     tokenSets.add(tokenSet);
   }
 }
  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;
  }
  private NodeToken backtrackToken(final NodeToken token) {
    NodeToken backtrackToken = token;

    if (!token.isComplete()) {
      token.markComplete();
      NodeTokenEvent.fireCompletedEvent(engine, backtrackToken, null);

      token.markBacktracked();
      NodeTokenEvent.fireBacktrackedEvent(engine, token);

      token.getProcess().removeActiveNodeToken(token);
    } else if (!token.getExecutionType().isBacktracked()) {
      if (token.getChildTokens().isEmpty()) {
        token.markBacktracked();
        NodeTokenEvent.fireBacktrackedEvent(engine, token);
      } else {
        backtrackToken = backtrackCompletedToken(token, ExecutionType.Backtracked);
        backtrackToken.setGuardAction(GuardAction.SkipNode);
        NodeTokenEvent.fireSkippedEvent(engine, backtrackToken, null);
      }
    }

    for (ArcToken parent : getParents(token)) {
      boolean backtrackParent = visited.contains(parent.getParentToken());

      token.getProcess().removeActiveArcToken(parent);
      parent.markBacktracked();
      ArcTokenEvent.fireBacktrackedEvent(engine, parent);

      ArcToken backtrackArcToken =
          engine
              .getFactory()
              .newArcToken(
                  token.getProcess(),
                  parent.getArc(),
                  backtrackParent ? ExecutionType.Backtracked : ExecutionType.UTurn,
                  backtrackToken);
      ArcTokenEvent.fireCreatedEvent(engine, backtrackArcToken);
      backtrackToken.getChildTokens().add(backtrackArcToken);
      shareTokenSets(backtrackArcToken, parent);

      if (backtrackParent && parent.getExecutionType() != ExecutionType.Forward) {
        ArcToken mirror = backtrackMirror.getMirror(parent);
        arcTokenMap.put(mirror, backtrackArcToken);
        finishArcTokenBacktrack(backtrackArcToken, mirror);
      } else {
        finishArcTokenBacktrack(backtrackArcToken, parent);
      }
    }

    return backtrackToken;
  }