Package org.drools.workflow.core.node

Examples of org.drools.workflow.core.node.Split

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        ruleSet2.setRuleFlowGroup( "rule-flow-group-2" );
        ruleSet2.setId(4);
        final RuleSetNode ruleSet3 = new RuleSetNode();
        ruleSet3.setRuleFlowGroup( "rule-flow-group-3" );
        ruleSet3.setId(5);
        final Split split = new Split();
        split.setType( Split.TYPE_AND );
        split.setId(6);
        final Join join = new Join();
        join.setType( Join.TYPE_AND );
        join.setId(7);
        final EndNode end = new EndNode();
        end.setId(8);
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        ruleSet2.setRuleFlowGroup( "rule-flow-group-2" );
        ruleSet2.setId(4);
        final RuleSetNode ruleSet3 = new RuleSetNode();
        ruleSet3.setRuleFlowGroup( "rule-flow-group-3" );
        ruleSet3.setId(5);
        final Split split = new Split();
        split.setType( Split.TYPE_XOR );
        split.setId(6);
        final Join join = new Join();
        join.setType( Join.TYPE_XOR );
        join.setId(7);
        final EndNode end = new EndNode();
        end.setId(8);
        // connections
        new ConnectionImpl( start,
                            Node.CONNECTION_DEFAULT_TYPE,
                            ruleSet0,
                            Node.CONNECTION_DEFAULT_TYPE );
        new ConnectionImpl( ruleSet0,
                            Node.CONNECTION_DEFAULT_TYPE,
                            split,
                            Node.CONNECTION_DEFAULT_TYPE );
        Connection out1 = new ConnectionImpl( split,
                                              Node.CONNECTION_DEFAULT_TYPE,
                                              ruleSet1,
                                              Node.CONNECTION_DEFAULT_TYPE );
        Connection out2 = new ConnectionImpl( split,
                                              Node.CONNECTION_DEFAULT_TYPE,
                                              ruleSet2,
                                              Node.CONNECTION_DEFAULT_TYPE );
        new ConnectionImpl( ruleSet1,
                            Node.CONNECTION_DEFAULT_TYPE,
                            join,
                            Node.CONNECTION_DEFAULT_TYPE );
        new ConnectionImpl( ruleSet2,
                            Node.CONNECTION_DEFAULT_TYPE,
                            join,
                            Node.CONNECTION_DEFAULT_TYPE );
        new ConnectionImpl( join,
                            Node.CONNECTION_DEFAULT_TYPE,
                            ruleSet3,
                            Node.CONNECTION_DEFAULT_TYPE );
        new ConnectionImpl( ruleSet3,
                            Node.CONNECTION_DEFAULT_TYPE,
                            end,
                            Node.CONNECTION_DEFAULT_TYPE );
        ConstraintEvaluator constraint1 = new org.drools.workflow.instance.impl.RuleConstraintEvaluator();
        constraint1.setPriority( 1 );
        split.setConstraint( out1,
                             constraint1 );
        ConstraintEvaluator constraint2 = new org.drools.workflow.instance.impl.RuleConstraintEvaluator();
        constraint2.setPriority( 2 );
        split.setConstraint( out2,
                             constraint2 );

        // process
        final RuleFlowProcess process = new RuleFlowProcess();
        process.setId( "1" );
        process.addNode( start );
        process.addNode( ruleSet0 );
        process.addNode( ruleSet1 );
        process.addNode( ruleSet2 );
        process.addNode( ruleSet3 );
        process.addNode( split );
        process.addNode( join );
        process.addNode( end );

        // rules for split
        final Rule splitRule1 = new Rule( "RuleFlow-Split-1-" + split.getId() + "-" + ruleSet1.getId() );
        splitRule1.setRuleFlowGroup( "DROOLS_SYSTEM" );
        splitRule1.setConsequence( consequence );

        final RuleTerminalNode splitNode1 = new RuleTerminalNode( 7,
                                                                  new MockTupleSource( 2 ),
                                                                  splitRule1,
                                                                  splitRule1.getLhs(),
                                                                  buildContext );

        final Rule splitRule2 = new Rule( "RuleFlow-Split-1-" + split.getId() + "-" + ruleSet2.getId() );
        splitRule2.setRuleFlowGroup( "DROOLS_SYSTEM" );
        splitRule2.setConsequence( consequence );

        final RuleTerminalNode splitNode2 = new RuleTerminalNode( 8,
                                                                  new MockTupleSource( 2 ),
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    public void internalTrigger(final NodeInstance from, String type) {
        if (!org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE.equals(type)) {
            throw new IllegalArgumentException(
                "A Split only accepts default incoming connections!");
        }
        final Split split = getSplit();
        // TODO make different strategies for each type
        switch ( split.getType() ) {
            case Split.TYPE_AND :
                triggerCompleted(org.drools.workflow.core.Node.CONNECTION_DEFAULT_TYPE, true);
                break;
            case Split.TYPE_XOR :
                List<Connection> outgoing = split.getDefaultOutgoingConnections();
                int priority = Integer.MAX_VALUE;
                Connection selected = null;
                for ( final Iterator<Connection> iterator = outgoing.iterator(); iterator.hasNext(); ) {
                    final Connection connection = (Connection) iterator.next();
                    ConstraintEvaluator constraint = (ConstraintEvaluator) split.getConstraint( connection );
                    if ( constraint != null && constraint.getPriority() < priority ) {
                        if ( constraint.evaluate( this,
                                                  connection,
                                                  constraint ) ) {
                            selected = connection;
                            priority = constraint.getPriority();
                        }
                    }
                }
                ((NodeInstanceContainer) getNodeInstanceContainer()).removeNodeInstance(this);
                if ( selected == null ) {
                    throw new IllegalArgumentException( "XOR split could not find at least one valid outgoing connection for split " + getSplit().getName() );
                }
                triggerConnection(selected);
                break;
            case Split.TYPE_OR :
              ((NodeInstanceContainer) getNodeInstanceContainer()).removeNodeInstance(this);
                outgoing = split.getDefaultOutgoingConnections();
                boolean found = false;
                List<Connection> outgoingCopy = new ArrayList<Connection>(outgoing);
                while (!outgoingCopy.isEmpty()) {
                    priority = Integer.MAX_VALUE;
                    Connection selectedConnection = null;
                    ConstraintEvaluator selectedConstraint = null;
                    for ( final Iterator<Connection> iterator = outgoingCopy.iterator(); iterator.hasNext(); ) {
                        final Connection connection = (Connection) iterator.next();
                        ConstraintEvaluator constraint = (ConstraintEvaluator) split.getConstraint( connection );
   
                        if ( constraint != null 
                                && constraint.getPriority() < priority ) {
                            priority = constraint.getPriority();
                            selectedConnection = connection;
                            selectedConstraint = constraint;
                        }
                    }
                    if (selectedConstraint.evaluate( this,
                                                     selectedConnection,
                                                     selectedConstraint ) ) {
                        triggerConnection(selectedConnection);
                        found = true;
                    }
                    outgoingCopy.remove(selectedConnection);
                }
                if ( !found ) {
                    throw new IllegalArgumentException( "OR split could not find at least one valid outgoing connection for split " + getSplit().getName() );
                }               
                break;
            default :
                throw new IllegalArgumentException( "Illegal split type " + split.getType() );
        }
    }
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                if (ruleFlowGroup == null || "".equals(ruleFlowGroup)) {
                    errors.add( new ProcessValidationErrorImpl(process,
                        "RuleSet node '" + node.getName() + "' [" + node.getId() + "] has no ruleflow-group."));
                }
            } 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) {
                    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) {
                            errors.add(new ProcessValidationErrorImpl(process,
                                "Split node '" + node.getName() + "' [" + node.getId() + "] does not have a constraint for " + connection.toString() + "."));
                        }
                    }
                }
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    public SplitFactory(RuleFlowNodeContainerFactory nodeContainerFactory, NodeContainer nodeContainer, long id) {
        super(nodeContainerFactory, nodeContainer, id);
    }

    protected Node createNode() {
        return new Split();
    }
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import org.xml.sax.SAXException;

public class SplitNodeHandler extends AbstractNodeHandler {

    protected Node createNode() {
        return new Split();
    }
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    public void handleNode(final Node node, final Element element, final String uri,
            final String localName, final ExtensibleXmlParser parser)
            throws SAXException {
        super.handleNode(node, element, uri, localName, parser);
        Split splitNode = (Split) node;
        String type = element.getAttribute("type");
        if (type != null && type.length() != 0 ) {
            splitNode.setType(new Integer(type));
        }
    }
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  public Class generateNodeFor() {
        return Split.class;
    }

  public void writeNode(Node node, StringBuilder xmlDump, boolean includeMeta) {
    Split splitNode = (Split) node;
    writeNode("split", splitNode, xmlDump, includeMeta);
        int type = splitNode.getType();
        if (type != 0) {
            xmlDump.append("type=\"" + type + "\" ");
        }
        if (splitNode.getConstraints().isEmpty()) {
            endNode(xmlDump);
        } else {
            xmlDump.append(">" + EOL);
            xmlDump.append("      <constraints>" + EOL);
            for (Map.Entry<ConnectionRef, Constraint> entry: splitNode.getConstraints().entrySet()) {
                ConnectionRef connection = entry.getKey();
                Constraint constraint = entry.getValue();
                xmlDump.append("        <constraint "
                    + "toNodeId=\"" + connection.getNodeId() + "\" "
                    + "toType=\"" + connection.getToType() + "\" ");
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            }

            Node[] nodes = ruleFlow.getNodes();
            for ( int i = 0; i < nodes.length; i++ ) {
                if ( nodes[i] instanceof Split ) {
                    Split split = (Split) nodes[i];
                    if ( split.getType() == Split.TYPE_XOR || split.getType() == Split.TYPE_OR ) {
                        for ( Connection connection : split.getDefaultOutgoingConnections() ) {
                            Constraint constraint = split.getConstraint( connection );
                            if ( "rule".equals( constraint.getType() ) ) {
                                builder.append( createSplitRule( process,
                                                                 connection,
                                                                 split.getConstraint( connection ).getConstraint() ) );
                            }
                        }
                    }
                } else if ( nodes[i] instanceof MilestoneNode ) {
                    MilestoneNode milestone = (MilestoneNode) nodes[i];
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        if ("converging".equals(type)) {
          Join join = new Join();
          join.setType(Join.TYPE_UNDEFINED);
          return join;
        } else if ("diverging".equals(type)) {
          Split split = new Split();
          split.setType(Split.TYPE_UNDEFINED);
          return split;
        } else {
          throw new IllegalArgumentException(
          "Unknown gateway direction: " + type);
        }
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Related Classes of org.drools.workflow.core.node.Split

  • org.drools.bpmn2.legacy.beta1.ComplexGatewayHandler
  • org.drools.bpmn2.legacy.beta1.ExclusiveGatewayHandler
  • org.drools.bpmn2.legacy.beta1.InclusiveGatewayHandler
  • org.drools.bpmn2.legacy.beta1.ParallelGatewayHandler
  • org.drools.bpmn2.legacy.beta1.ProcessHandler
  • org.drools.bpmn2.legacy.beta1.SplitHandler
  • org.drools.bpmn2.legacy.beta1.XmlBPMNProcessDumper
  • org.drools.bpmn2.xml.ComplexGatewayHandler
  • org.drools.bpmn2.xml.EventBasedGatewayHandler
  • org.drools.bpmn2.xml.ExclusiveGatewayHandler
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