Examples with ExpressionTaskListener org.camunda.bpm.engine.impl.task.listener.ExpressionTaskListener used on opensource projects

Example 6 with ExpressionTaskListener

use of org.camunda.bpm.engine.impl.task.listener.ExpressionTaskListener in project camunda-bpm-platform by camunda.

the class BpmnParse method parseTaskListener.

protected TaskListener parseTaskListener(Element taskListenerElement) {
    TaskListener taskListener = null;
    String className = taskListenerElement.attribute(PROPERTYNAME_CLASS);
    String expression = taskListenerElement.attribute(PROPERTYNAME_EXPRESSION);
    String delegateExpression = taskListenerElement.attribute(PROPERTYNAME_DELEGATE_EXPRESSION);
    Element scriptElement = taskListenerElement.elementNS(CAMUNDA_BPMN_EXTENSIONS_NS, "script");
    if (className != null) {
        taskListener = new ClassDelegateTaskListener(className, parseFieldDeclarations(taskListenerElement));
    } else if (expression != null) {
        taskListener = new ExpressionTaskListener(expressionManager.createExpression(expression));
    } else if (delegateExpression != null) {
        taskListener = new DelegateExpressionTaskListener(expressionManager.createExpression(delegateExpression), parseFieldDeclarations(taskListenerElement));
    } else if (scriptElement != null) {
        try {
            ExecutableScript executableScript = parseCamundaScript(scriptElement);
            if (executableScript != null) {
                taskListener = new ScriptTaskListener(executableScript);
            }
        } catch (BpmnParseException e) {
            addError(e);
        }
    } else {
        addError("Element 'class', 'expression', 'delegateExpression' or 'script' is mandatory on taskListener", taskListenerElement);
    }
    return taskListener;
}