Examples of org.camunda.bpm.engine.impl.el.ExpressionManager

org.camunda.bpm.engine.impl.el.ExpressionManager

Central manager for all expressions.

Process parsers will use this to build expression objects that are stored in the process definitions.

Then also this class is used as an entry point for runtime evaluation of the expressions.
@author Tom Baeyens @author Dave Syer @author Frederik Heremans

    return null;
  }


  protected ExecutableScript parseScriptSource(String source, String language, CmmnHandlerContext context) {
    if (StringUtil.isExpression(source) && !JuelScriptEngineFactory.names.contains(language)) {
      ExpressionManager expressionManager = context.getExpressionManager();
      Expression scriptExpression = expressionManager.createExpression(source.trim());
      return new DynamicSourceExecutableScript(scriptExpression, language);
    }
    else {
      return parseScript(source, language);
    }

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    }
  }


  protected ExecutableScript parseScriptResource(String resource, String language, CmmnHandlerContext context) {
    if (StringUtil.isExpression(resource)) {
      ExpressionManager expressionManager = context.getExpressionManager();
      Expression scriptResourceExpression = expressionManager.createExpression(resource);
      return new DynamicResourceExecutableScript(scriptResourceExpression, language);
    }
    else {
      DeploymentEntity deployment = (DeploymentEntity) context.getDeployment();
      String scriptSource = ResourceUtil.loadResourceContent(resource, deployment);

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    String type = Expression.class.getName();


    Object value = getFixedValue(field);


    if (value == null) {
      ExpressionManager expressionManager = context.getExpressionManager();
      value = getExpressionValue(field, expressionManager);
    }


    return new FieldDeclaration(name, type, value);
  }

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    if (conditions.size() > 1) {
      String id = sentryDeclaration.getId();
      LOGGER.info("The ifPart of Sentry with id '"+id+"' has more than one condition: only the first condition will be used, the other conditions will be ignored.");
    }


    ExpressionManager expressionManager = context.getExpressionManager();
    ConditionExpression condition = conditions.iterator().next();
    Expression conditionExpression = expressionManager.createExpression(condition.getBody());


    CmmnIfPartDeclaration ifPartDeclaration = new CmmnIfPartDeclaration();
    ifPartDeclaration.setCondition(conditionExpression);
    sentryDeclaration.setIfPart(ifPartDeclaration);
  }

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    // outputs
    initializeOutputParameter(element, activity, context);
  }


  protected void initializeDefinitionKey(CmmnElement element, CmmnActivity activity, CmmnHandlerContext context, CallableElement callableElement) {
    ExpressionManager expressionManager = context.getExpressionManager();
    String definitionKey = getDefinitionKey(element, activity, context);
    ParameterValueProvider definitionKeyProvider = createParameterValueProvider(definitionKey, expressionManager);
    callableElement.setDefinitionKeyValueProvider(definitionKeyProvider);
  }

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      callableElement.setBinding(CallableElementBinding.VERSION);
    }
  }


  protected void initializeVersion(CmmnElement element, CmmnActivity activity, CmmnHandlerContext context, CallableElement callableElement) {
    ExpressionManager expressionManager = context.getExpressionManager();
    String version = getVersion(element, activity, context);
    ParameterValueProvider versionProvider = createParameterValueProvider(version, expressionManager);
    callableElement.setVersionValueProvider(versionProvider);
  }

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  protected void initializeInputParameter(CmmnElement element, CmmnActivity activity, CmmnHandlerContext context) {
    ProcessOrCaseTaskActivityBehavior behavior = (ProcessOrCaseTaskActivityBehavior) activity.getActivityBehavior();
    CallableElement callableElement = behavior.getCallableElement();


    ExpressionManager expressionManager = context.getExpressionManager();


    List<CamundaIn> inputs = getInputs(element);


    for (CamundaIn input : inputs) {

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  protected void initializeOutputParameter(CmmnElement element, CmmnActivity activity, CmmnHandlerContext context) {
    ProcessOrCaseTaskActivityBehavior behavior = (ProcessOrCaseTaskActivityBehavior) activity.getActivityBehavior();
    CallableElement callableElement = behavior.getCallableElement();


    ExpressionManager expressionManager = context.getExpressionManager();


    List<CamundaOut> outputs = getOutputs(element);


    for (CamundaOut output : outputs) {

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  @Override
  public void parseConfiguration(Element activityElement, DeploymentEntity deployment, ProcessDefinitionEntity processDefinition, BpmnParse bpmnParse) {
    super.parseConfiguration(activityElement, deployment, processDefinition, bpmnParse);


    ExpressionManager expressionManager = Context
        .getProcessEngineConfiguration()
        .getExpressionManager();


    String formKeyAttribute = activityElement.attributeNS(BpmnParser.ACTIVITI_BPMN_EXTENSIONS_NS, "formKey");


    if (formKeyAttribute != null) {
      this.formKey = expressionManager.createExpression(formKeyAttribute);
    }


    if (formKey != null) {
      processDefinition.setStartFormKey(true);
    }

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  protected List<FormFieldHandler> formFieldHandlers = new ArrayList<FormFieldHandler>();


  public void parseConfiguration(Element activityElement, DeploymentEntity deployment, ProcessDefinitionEntity processDefinition, BpmnParse bpmnParse) {
    this.deploymentId = deployment.getId();


    ExpressionManager expressionManager = Context
        .getProcessEngineConfiguration()
        .getExpressionManager();


    Element extensionElement = activityElement.element("extensionElements");
    if (extensionElement != null) {

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