Examples with Expression org.jbpm.bpmn2.core.Expression used on opensource projects

Example 1 with Expression

use of org.jbpm.bpmn2.core.Expression in project jbpm by kiegroup.

the class ProcessHandler method postProcessCollaborations.

private void postProcessCollaborations(RuleFlowProcess process, ExtensibleXmlParser parser) {
    // now we wire correlation process subscriptions
    CorrelationManager correlationManager = process.getCorrelationManager();
    for (Message message : HandlerUtil.messages(parser).values()) {
        correlationManager.newMessage(message.getId(), message.getName(), message.getType());
    }
    // only the ones this process is member of
    List<Collaboration> collaborations = HandlerUtil.collaborations(parser).values().stream().filter(c -> c.getProcessesRef().contains(process.getId())).collect(Collectors.toList());
    for (Collaboration collaboration : collaborations) {
        for (CorrelationKey key : collaboration.getCorrelationKeys()) {
            correlationManager.newCorrelation(key.getId(), key.getName());
            List<CorrelationProperty> properties = key.getPropertiesRef().stream().map(k -> HandlerUtil.correlationProperties(parser).get(k)).collect(Collectors.toList());
            for (CorrelationProperty correlationProperty : properties) {
                correlationProperty.getMessageRefs().forEach(messageRef -> {
                    // for now only MVEL expressions
                    MVELMessageExpressionEvaluator evaluator = new MVELMessageExpressionEvaluator(correlationProperty.getRetrievalExpression(messageRef).getScript());
                    correlationManager.addMessagePropertyExpression(key.getId(), messageRef, correlationProperty.getId(), evaluator);
                });
            }
        }
    }
    // we create the correlations
    for (CorrelationSubscription subscription : HandlerUtil.correlationSuscription(process).values()) {
        correlationManager.subscribeTo(subscription.getCorrelationKeyRef());
        for (Map.Entry<String, Expression> binding : subscription.getPropertyExpressions().entrySet()) {
            MVELMessageExpressionEvaluator evaluator = new MVELMessageExpressionEvaluator(binding.getValue().getScript());
            correlationManager.addProcessSubscriptionPropertyExpression(subscription.getCorrelationKeyRef(), binding.getKey(), evaluator);
        }
    }
}

Example 2 with Expression

use of org.jbpm.bpmn2.core.Expression in project jbpm by kiegroup.

the class ActivityTest method testServiceTaskWithCustomTransformation.

@Test
public void testServiceTaskWithCustomTransformation() throws Exception {
    DataTransformerRegistry.get().register("http://custom/transformer", new DataTransformer() {

        @Override
        public Object transform(Object expression, Map<String, Object> parameters) {
            // support only single object
            String value = parameters.values().iterator().next().toString();
            Object result = null;
            if ("caplitalizeFirst".equals(expression)) {
                String first = value.substring(0, 1);
                String main = value.substring(1, value.length());
                result = first.toUpperCase() + main;
            } else if ("caplitalizeLast".equals(expression)) {
                String last = value.substring(value.length() - 1);
                String main = value.substring(0, value.length() - 1);
                result = main + last.toUpperCase();
            } else {
                throw new IllegalArgumentException("Unknown expression " + expression);
            }
            return result;
        }

        @Override
        public Object compile(String expression, Map<String, Object> parameters) {
            // compilation not supported
            return expression;
        }
    });
    KieBase kbase = createKnowledgeBaseWithoutDumper("BPMN2-ServiceProcessWithCustomTransformation.bpmn2");
    ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Service Task", new ServiceTaskHandler());
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("s", "john doe");
    WorkflowProcessInstance processInstance = (WorkflowProcessInstance) ksession.startProcess("ServiceProcess", params);
    assertProcessInstanceFinished(processInstance, ksession);
    assertEquals("John doE", processInstance.getVariable("s"));
}

Example 3 with Expression

use of org.jbpm.bpmn2.core.Expression in project jbpm by kiegroup.

the class CorrelationSubscriptionHandler method buildPropertyProcessBindings.

private Map<String, Expression> buildPropertyProcessBindings(NodeList childNodes, ExtensibleXmlParser parser) {
    Map<String, Expression> correlationKeys = new HashMap<>();
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node node = childNodes.item(i);
        if ("correlationPropertyBinding".equals(node.getNodeName())) {
            Element elementBinding = (Element) node;
            correlationKeys.put(elementBinding.getAttribute("correlationPropertyRef"), buildBindingExpression(elementBinding.getChildNodes(), parser));
        }
    }
    return correlationKeys;
}

Example 4 with Expression

use of org.jbpm.bpmn2.core.Expression in project jbpm by kiegroup.

the class CorrelationSubscriptionHandler method buildBindingExpression.

private Expression buildBindingExpression(NodeList childNodes, ExtensibleXmlParser parser) {
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node node = childNodes.item(i);
        if ("dataPath".equals(node.getNodeName())) {
            Element expressionElement = (Element) node;
            Expression expression = new Expression();
            expression.setId(expressionElement.getAttribute("id"));
            expression.setLang(expressionElement.getAttribute("language"));
            expression.setScript(expressionElement.getTextContent());
            expression.setOutcomeType(HandlerUtil.definitions(parser).get(expressionElement.getAttribute("evaluatesToTypeRef")).getStructureRef());
            return expression;
        }
    }
    throw new RuntimeException("message Path not found for correlation property " + parser.getCurrent());
}

Example 5 with Expression

use of org.jbpm.bpmn2.core.Expression in project jbpm by kiegroup.

the class CorrelationPropertyHandler method buildMessagePathExpression.

private Expression buildMessagePathExpression(NodeList childNodes, ExtensibleXmlParser parser) {
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node node = childNodes.item(i);
        if ("messagePath".equals(node.getNodeName())) {
            Element expressionElement = (Element) node;
            Expression expression = new Expression();
            expression.setId(expressionElement.getAttribute("id"));
            expression.setLang(expressionElement.getAttribute("language"));
            expression.setScript(expressionElement.getTextContent());
            expression.setOutcomeType(HandlerUtil.definitions(parser).get(expressionElement.getAttribute("evaluatesToTypeRef")).getStructureRef());
            return expression;
        }
    }
    throw new RuntimeException("message Path not found for correlation property " + parser.getCurrent());
}