Package org.drools.definition.process

Examples of org.drools.definition.process.Node

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    if (toType == null || toType.trim().length() == 0) {
      toType = NodeImpl.CONNECTION_DEFAULT_TYPE;
    }

    NodeContainer nodeContainer = (NodeContainer) parser.getParent();
    Node fromNode = nodeContainer.getNode( new Long(fromId) );
    Node toNode = nodeContainer.getNode( new Long(toId) );

    if ( fromNode == null ) {
      throw new SAXParseException( "Node '" + fromId + "'cannot be found",
                                 parser.getLocator() );
    }
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  public static void linkConnections(NodeContainer nodeContainer, List<SequenceFlow> connections) {
    if (connections != null) {
      for (SequenceFlow connection: connections) {
        String sourceRef = connection.getSourceRef();
        String targetRef = connection.getTargetRef();
        Node source = null;
        Node target = null;
        try {
            // remove starting _
            sourceRef = sourceRef.substring(1);
            // remove ids of parent nodes
            sourceRef = sourceRef.substring(sourceRef.lastIndexOf("-") + 1);
            source = nodeContainer.getNode(new Integer(sourceRef));
        } catch (NumberFormatException e) {
            // try looking for a node with same "UniqueId" (in metadata)
            for (Node node: nodeContainer.getNodes()) {
                if (connection.getSourceRef().equals(node.getMetaData().get("UniqueId"))) {
                    source = node;
                    break;
                }
            }
                    if (source == null) {
                        throw new IllegalArgumentException("Could not find source node for connection:" + connection.getSourceRef());
                    }
        }
        try {
            // remove starting _
            targetRef = targetRef.substring(1);
                // remove ids of parent nodes
            targetRef = targetRef.substring(targetRef.lastIndexOf("-") + 1);
            target = nodeContainer.getNode(new Integer(targetRef));
        } catch (NumberFormatException e) {
            // try looking for a node with same "UniqueId" (in metadata)
                    for (Node node: nodeContainer.getNodes()) {
                        if (connection.getTargetRef().equals(node.getMetaData().get("UniqueId"))) {
                            target = node;
                            break;
                        }
                    }
                    if (target == null) {
                        throw new IllegalArgumentException("Could not find target node for connection:" + connection.getTargetRef());
                    }
        }
        Connection result = new ConnectionImpl(
          source, NodeImpl.CONNECTION_DEFAULT_TYPE,
          target, NodeImpl.CONNECTION_DEFAULT_TYPE);
        result.setMetaData("bendpoints", connection.getBendpoints());
        result.setMetaData("UniqueId", connection.getId());
        if (source instanceof Split) {
          Split split = (Split) source;
          Constraint constraint = new ConstraintImpl();
          String defaultConnection = (String) split.getMetaData("Default");
          if (defaultConnection != null && defaultConnection.equals(connection.getId())) {
            constraint.setDefault(true);
          }
          if (connection.getName() != null) {
            constraint.setName(connection.getName());
          } else {
            constraint.setName("");
          }
          if (connection.getType() != null) {
            constraint.setType(connection.getType());
          } else {
            constraint.setType("code");
          }
          if (connection.getLanguage() != null) {
            constraint.setDialect(connection.getLanguage());
          }
          if (connection.getExpression() != null) {
            constraint.setConstraint(connection.getExpression());
          }
          constraint.setPriority(connection.getPriority());
          split.addConstraint(
            new ConnectionRef(target.getId(), NodeImpl.CONNECTION_DEFAULT_TYPE),
            constraint);
        }
      }
    }
  }
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            if (node instanceof EventNode) {
                String attachedTo = (String) node.getMetaData().get("AttachedTo");
                if (attachedTo != null) {
                  String type = ((EventTypeFilter)
                        ((EventNode) node).getEventFilters().get(0)).getType();
                    Node attachedNode = null;
                    try {
                        // remove starting _
                        String attachedToString = attachedTo.substring(1);
                        // remove ids of parent nodes
                        attachedToString = attachedToString.substring(attachedToString.lastIndexOf("-") + 1);
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        return errors.toArray(new ProcessValidationError[errors.size()]);
    }
   
    private void validateNodes(Node[] nodes, List<ProcessValidationError> errors, RuleFlowProcess process) {
        for ( int i = 0; i < nodes.length; i++ ) {
            final Node node = nodes[i];
            if (node instanceof StartNode) {
                final StartNode startNode = (StartNode) node;
                startNodeFound = true;
                if (startNode.getTo() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Start node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
            } else if (node instanceof EndNode) {
                final EndNode endNode = (EndNode) node;
                endNodeFound = true;
                if (endNode.getFrom() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "End node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
            } else if (node instanceof RuleSetNode) {
                final RuleSetNode ruleSetNode = (RuleSetNode) node;
                if (ruleSetNode.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "RuleSet node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (ruleSetNode.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "RuleSet node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                final String ruleFlowGroup = ruleSetNode.getRuleFlowGroup();
                if (ruleFlowGroup == null || "".equals(ruleFlowGroup)) {
                    errors.add( new ProcessValidationErrorImpl(process,
                        "RuleSet node '" + node.getName() + "' [" + node.getId() + "] has no ruleflow-group."));
                }
                if (ruleSetNode.getTimers() != null) {
                  for (Timer timer: ruleSetNode.getTimers().keySet()) {
                    validateTimer(timer, node, process, errors);
                  }
                }
            } else if (node instanceof Split) {
                final Split split = (Split) node;
                if (split.getType() == Split.TYPE_UNDEFINED) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Split node '" + node.getName() + "' [" + node.getId() + "] has no type."));
                }
                if (split.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Split node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (split.getDefaultOutgoingConnections().size() < 2) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Split node '" + node.getName() + "' [" + node.getId() + "] does not have more than one outgoing connection: " + split.getOutgoingConnections().size() + "."));
                }
                if (split.getType() == Split.TYPE_XOR || split.getType() == Split.TYPE_OR ) {
                    for ( final Iterator<Connection> it = split.getDefaultOutgoingConnections().iterator(); it.hasNext(); ) {
                        final Connection connection = it.next();
                        if (split.getConstraint(connection) == null && !split.getConstraint(connection).isDefault() && (split.getConstraint(connection).getConstraint() == null || split.getConstraint(connection).getConstraint().trim().length() == 0)) {
                            errors.add(new ProcessValidationErrorImpl(process,
                                "Split node '" + node.getName() + "' [" + node.getId() + "] does not have a constraint for " + connection.toString() + "."));
                        }
                    }
                }
            } else if (node instanceof Join) {
                final Join join = (Join) node;
                if (join.getType() == Join.TYPE_UNDEFINED) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Join node '" + node.getName() + "' [" + node.getId() + "] has no type."));
                }
                if (join.getDefaultIncomingConnections().size() < 2) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Join node '" + node.getName() + "' [" + node.getId() + "] does not have more than one incoming connection: " + join.getIncomingConnections().size() + "."));
                }
                if (join.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Join node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (join.getType() == Join.TYPE_N_OF_M) {
                  String n = join.getN();
                  if (!n.startsWith("#{") || !n.endsWith("}")) {
                    try {
                      new Integer(n);
                    } catch (NumberFormatException e) {
                            errors.add(new ProcessValidationErrorImpl(process,
                                "Join node '" + node.getName() + "' [" + node.getId() + "] has illegal n value: " + n));
                    }
                  }
                }
            } else if (node instanceof MilestoneNode) {
                final MilestoneNode milestone = (MilestoneNode) node;
                if (milestone.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Milestone node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }

                if (milestone.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add( new ProcessValidationErrorImpl(process,
                        "Milestone node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (milestone.getConstraint() == null) {
                    errors.add( new ProcessValidationErrorImpl(process,
                        "Milestone node '" + node.getName() + "' [" + node.getId() + "] has no constraint."));
                }
                if (milestone.getTimers() != null) {
                  for (Timer timer: milestone.getTimers().keySet()) {
                    validateTimer(timer, node, process, errors);
                  }
                }
            } else if (node instanceof StateNode) {
                final StateNode stateNode = (StateNode) node;
                if (stateNode.getDefaultIncomingConnections().size() == 0 && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "State node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection"));
                }
            }
            else if (node instanceof SubProcessNode) {
                final SubProcessNode subProcess = (SubProcessNode) node;
                if (subProcess.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "SubProcess node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (subProcess.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "SubProcess node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (subProcess.getProcessId() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "SubProcess node '" + node.getName() + "' [" + node.getId() + "] has no process id."));
                }
                if (subProcess.getTimers() != null) {
                  for (Timer timer: subProcess.getTimers().keySet()) {
                    validateTimer(timer, node, process, errors);
                  }
                }
            } else if (node instanceof ActionNode) {
                final ActionNode actionNode = (ActionNode) node;
                if (actionNode.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Action node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (actionNode.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Action node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (actionNode.getAction() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Action node '" + node.getName() + "' [" + node.getId() + "] has no action."));
                } else {
                    if (actionNode.getAction() instanceof DroolsConsequenceAction) {
                        DroolsConsequenceAction droolsAction = (DroolsConsequenceAction) actionNode.getAction();
                        String actionString = droolsAction.getConsequence();
                        if (actionString == null) {
                            errors.add(new ProcessValidationErrorImpl(process,
                                "Action node '" + node.getName() + "' [" + node.getId() + "] has empty action."));
                        } else if( "mvel".equals( droolsAction.getDialect() ) ) {
                            try {
                                ExpressionCompiler compiler = new ExpressionCompiler(actionString);
                                compiler.setVerifying(true);
                                ParserContext parserContext = new ParserContext();
                                //parserContext.setStrictTypeEnforcement(true);
                                compiler.compile(parserContext);
                                List<ErrorDetail> mvelErrors = parserContext.getErrorList();
                                if (mvelErrors != null) {
                                    for (Iterator<ErrorDetail> iterator = mvelErrors.iterator(); iterator.hasNext(); ) {
                                        ErrorDetail error = iterator.next();
                                        errors.add(new ProcessValidationErrorImpl(process,
                                            "Action node '" + node.getName() + "' [" + node.getId() + "] has invalid action: " + error.getMessage() + "."));
                                    }
                                }
                            } catch (Throwable t) {
                                errors.add(new ProcessValidationErrorImpl(process,
                                    "Action node '" + node.getName() + "' [" + node.getId() + "] has invalid action: " + t.getMessage() + "."));
                            }
                        }
                    }
                }
            } else if (node instanceof WorkItemNode) {
                final WorkItemNode workItemNode = (WorkItemNode) node;
                if (workItemNode.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "WorkItem node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (workItemNode.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "WorkItem node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (workItemNode.getWork() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "WorkItem node '" + node.getName() + "' [" + node.getId() + "] has no work specified."));
                } else {
                    Work work = workItemNode.getWork();
                    if (work.getName() == null) {
                        errors.add(new ProcessValidationErrorImpl(process,
                            "WorkItem node '" + node.getName() + "' [" + node.getId() + "] has no work name."));
                    }
                }
                if (workItemNode.getTimers() != null) {
                  for (Timer timer: workItemNode.getTimers().keySet()) {
                    validateTimer(timer, node, process, errors);
                  }
                }
            } else if (node instanceof ForEachNode) {
                final ForEachNode forEachNode = (ForEachNode) node;
                String variableName = forEachNode.getVariableName();
                if (variableName == null || "".equals(variableName)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no variable name"));
                }
                String collectionExpression = forEachNode.getCollectionExpression();
                if (collectionExpression == null || "".equals(collectionExpression)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no collection expression"));
                }
                if (forEachNode.getDefaultIncomingConnections().size() == 0 && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection"));
                }
                if (forEachNode.getDefaultOutgoingConnections().size() == 0 && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection"));
                }
                // TODO: check, if no linked connections, for start and end node(s)
//                if (forEachNode.getLinkedIncomingNode(org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE) == null) {
//                    errors.add(new ProcessValidationErrorImpl(process,
//                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no linked start node"));
//                }
//                if (forEachNode.getLinkedOutgoingNode(org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE) == null) {
//                    errors.add(new ProcessValidationErrorImpl(process,
//                        "ForEach node '" + node.getName() + "' [" + node.getId() + "] has no linked end node"));
//                }
                validateNodes(forEachNode.getNodes(), errors, process);
            } else if (node instanceof DynamicNode) {
                final DynamicNode dynamicNode = (DynamicNode) node;
                if (dynamicNode.getDefaultIncomingConnections().size() == 0) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Dynamic node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection"));
                }
                if (dynamicNode.getDefaultOutgoingConnections().size() == 0) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Dynamic node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection"));
                }
                validateNodes(dynamicNode.getNodes(), errors, process);
            } else if (node instanceof CompositeNode) {
                final CompositeNode compositeNode = (CompositeNode) node;
                for (Map.Entry<String, NodeAndType> inType: compositeNode.getLinkedIncomingNodes().entrySet()) {
                    if (compositeNode.getIncomingConnections(inType.getKey()).size() == 0  && !acceptsNoIncomingConnections(node)) {
                        errors.add(new ProcessValidationErrorImpl(process,
                            "Composite node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection for type " + inType.getKey()));
                    }
                  if (inType.getValue().getNode() == null && !acceptsNoOutgoingConnections(node)) {
                        errors.add(new ProcessValidationErrorImpl(process,
                            "Composite node '" + node.getName() + "' [" + node.getId() + "] has invalid linked incoming node for type " + inType.getKey()));
                  }
                }
                for (Map.Entry<String, NodeAndType> outType: compositeNode.getLinkedOutgoingNodes().entrySet()) {
                    if (compositeNode.getOutgoingConnections(outType.getKey()).size() == 0) {
                        errors.add(new ProcessValidationErrorImpl(process,
                            "Composite node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection for type " + outType.getKey()));
                    }
                  if (outType.getValue().getNode() == null) {
                        errors.add(new ProcessValidationErrorImpl(process,
                            "Composite node '" + node.getName() + "' [" + node.getId() + "] has invalid linked outgoing node for type " + outType.getKey()));
                  }
                }
                validateNodes(compositeNode.getNodes(), errors, process);
            } else if (node instanceof EventNode) {
                final EventNode eventNode = (EventNode) node;
                if (eventNode.getEventFilters().size() == 0) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Event node '" + node.getName() + "' [" + node.getId() + "] should specify an event type"));
                }
                if (eventNode.getDefaultOutgoingConnections().size() == 0) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Event node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection"));
                }
            } else if (node instanceof FaultNode) {
              endNodeFound = true;
                final FaultNode faultNode = (FaultNode) node;
              if (faultNode.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Fault node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
              if (faultNode.getFaultName() == null) {
                errors.add(new ProcessValidationErrorImpl(process,
                        "Fault node '" + node.getName() + "' [" + node.getId() + "] has no fault name."));
              }
            } else if (node instanceof TimerNode) {
              TimerNode timerNode = (TimerNode) node;
                if (timerNode.getFrom() == null && !acceptsNoIncomingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Timer node '" + node.getName() + "' [" + node.getId() + "] has no incoming connection."));
                }
                if (timerNode.getTo() == null && !acceptsNoOutgoingConnections(node)) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Timer node '" + node.getName() + "' [" + node.getId() + "] has no outgoing connection."));
                }
                if (timerNode.getTimer() == null) {
                    errors.add(new ProcessValidationErrorImpl(process,
                        "Timer node '" + node.getName() + "' [" + node.getId() + "] has no timer specified."));
                } else {
                  validateTimer(timerNode.getTimer(), node, process, errors);
                }
            } else {
              errors.add(new ProcessValidationErrorImpl(process,
                    "Unknown node type '" + node.getClass().getName() + "'"));
            }
        }

    }
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                                               final List<ProcessValidationError> errors) {
        final Map<Node, Boolean> processNodes = new HashMap<Node, Boolean>();
        final Node[] nodes = process.getNodes();
        List<Node> eventNodes = new ArrayList<Node>();
        for (int i = 0; i < nodes.length; i++) {
            final Node node = nodes[i];
            processNodes.put(node, Boolean.FALSE);
            if (node instanceof EventNode) {
              eventNodes.add(node);
            }
        }
        if (process.isDynamic()) {
          for (Node node: process.getNodes()) {
            if (node.getIncomingConnections(NodeImpl.CONNECTION_DEFAULT_TYPE).isEmpty()) {
              processNode(node, processNodes);
            }
          }
        } else {
          final Node start = process.getStart();
          if (start != null) {
              processNode(start, processNodes);
          }
        }
        for (Node eventNode: eventNodes) {
            processNode(eventNode, processNodes);
        }
        for ( final Iterator<Node> it = processNodes.keySet().iterator(); it.hasNext(); ) {
            final Node node = it.next();
            if (Boolean.FALSE.equals(processNodes.get(node))) {
                errors.add(new ProcessValidationErrorImpl(process,
                    "Node '" + node.getName() + "' [" + node.getId() + "] has no connection to the start node."));
            }
        }
    }
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                    throw new IllegalArgumentException( "OR split could not find at least one valid outgoing connection for split " + getSplit().getName() );
                }               
                break;
            case Split.TYPE_XAND :
              ((org.jbpm.workflow.instance.NodeInstanceContainer) getNodeInstanceContainer()).removeNodeInstance(this);
                Node node = getNode();
                List<Connection> connections = null;
                if (node != null) {
                  connections = node.getOutgoingConnections(type);
                }
                if (connections == null || connections.isEmpty()) {
                  ((org.jbpm.workflow.instance.NodeInstanceContainer) getNodeInstanceContainer())
                    .nodeInstanceCompleted(this, type);
                } else {
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    public long getNodeId() {
        return this.nodeId;
    }
   
    public String getNodeName() {
      Node node = getNode();
      return node == null ? "" : node.getName();
    }
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    protected void triggerCompleted(String type, boolean remove) {
        if (remove) {
            ((org.jbpm.workflow.instance.NodeInstanceContainer) getNodeInstanceContainer())
              .removeNodeInstance(this);
        }
        Node node = getNode();
        List<Connection> connections = null;
        if (node != null) {
          connections = node.getOutgoingConnections(type);
        }
        if (connections == null || connections.isEmpty()) {
          ((org.jbpm.workflow.instance.NodeInstanceContainer) getNodeInstanceContainer())
            .nodeInstanceCompleted(this, type);
        } else {
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            triggerCompleted(workItem);
        }
    }
   
    public String getNodeName() {
        Node node = getNode();
        if (node == null) {
            String nodeName =  "[Dynamic]";
            WorkItem workItem = getWorkItem();
            if (workItem != null) {
                nodeName += " " + workItem.getParameter("TaskName");
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        return (Node[]) this.nodes.values()
                .toArray(new Node[this.nodes.size()]);
    }

    public Node getNode(final long id) {
        Node node = this.nodes.get(id);
        if (node == null) {
            throw new IllegalArgumentException("Unknown node id: " + id);
        }
        return node;
    }
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