private object GetValue(ELContext context, IVariableScope variableScope)
{
string expstr = ExpressionString;
if ((VariableScopeElResolver.EXECUTION_KEY.Equals(expstr) && variableScope is IExecutionEntity) || (VariableScopeElResolver.TASK_KEY.Equals(expstr) && variableScope is ITaskEntity))
{
context.IsPropertyResolved = true;
return(variableScope);
}
else if (VariableScopeElResolver.EXECUTION_KEY.Equals(expstr) && variableScope is ITaskEntity entity)
{
context.IsPropertyResolved = true;
return(entity.Execution);
}
else if (VariableScopeElResolver.LOGGED_IN_USER_KEY.Equals(expstr))
{
context.IsPropertyResolved = true;
return(Authentication.AuthenticatedUser.Id);
}
IScriptingEnginesProvider scriptingEnginesProvider = ProcessEngineServiceProvider.Resolve <IScriptingEnginesProvider>();
IScriptingEngines scriptingEngines = scriptingEnginesProvider.Create(language);
var execution = variableScope is ITaskEntity te ? te.Execution : variableScope as IExecutionEntity;
return(scriptingEngines.Evaluate(expstr, execution));
}
/// <summary>
///
/// </summary>
/// <param name="execution"></param>
public override void Execute(IExecutionEntity execution)
{
IScriptingEngines scriptingEngines = Context.ProcessEngineConfiguration.ScriptingEnginesProvider.Create(language);
if (Context.ProcessEngineConfiguration.EnableProcessDefinitionInfoCache)
{
JToken taskElementProperties = Context.GetBpmnOverrideElementProperties(scriptTaskId, execution.ProcessDefinitionId);
if (taskElementProperties != null && taskElementProperties[DynamicBpmnConstants.SCRIPT_TASK_SCRIPT] != null)
{
string overrideScript = taskElementProperties[DynamicBpmnConstants.SCRIPT_TASK_SCRIPT].ToString();
if (!string.IsNullOrWhiteSpace(overrideScript) && !overrideScript.Equals(script))
{
script = overrideScript;
}
}
}
bool noErrors = true;
try
{
object result = scriptingEngines.Evaluate(script, execution);
if (resultVariable is object)
{
execution.SetVariable(resultVariable, result);
}
}
catch (ActivitiException e)
{
logger.LogWarning("Exception while executing " + execution.CurrentFlowElement.Id + " : " + e.Message);
noErrors = false;
if (e is BpmnError error)
{
ErrorPropagation.PropagateError(error, execution);
}
else
{
throw e;
}
}
if (noErrors)
{
Leave(execution);
}
}
/// <summary>
///
/// </summary>
/// <param name="sequenceFlowId"></param>
/// <param name="execution"></param>
/// <returns></returns>
public virtual bool Evaluate(string sequenceFlowId, IExecutionEntity execution)
{
IScriptingEnginesProvider scriptingEnginesProvider = ProcessEngineServiceProvider.Resolve <IScriptingEnginesProvider>();
IScriptingEngines scriptingEngines = scriptingEnginesProvider.Create(language);
object result = scriptingEngines.Evaluate(expression, execution);
if (result is null)
{
throw new ActivitiException("condition script returns null: " + expression);
}
if (!(result is bool))
{
throw new ActivitiException("condition script returns non-Boolean: " + result + " (" + result.GetType().FullName + ")");
}
return(Convert.ToBoolean(result));
}
