public IWorkflowActivity Activate()
{
IWorkflowActivity activity = null;
try
{
_logger.Information("Activate Activity {0}", _process.Process);
activity = LoadActivity();
//get the list of the required attributes from Activity
List <string> required = new List <string>(activity.RequiredAttributes);
//check if we have what we need
WorkflowActivityArgs activity_args = new WorkflowActivityArgs();
if (!ProcessAttributeRequest(activity_args, required))
{
throw new Exception("Not all requested Attributes are available");
}
activity_args.Logger = _logger;
activity.Configure(activity_args);
}
catch (Exception ex)
{
//result = WfResult.Create(WfStatus.Failed, ex.Message, -5);
throw ex;
}
return(activity);
}
private bool ProcessAttributeRequest(WorkflowActivityArgs args, List <string> required)
{
bool ret = true;
WorkflowAttributeCollection found = new WorkflowAttributeCollection();
List <string> attr_list = new List <string>();
if (required != null && required.Count > 0)
{
List <WorkflowParameter> list = _process.Parameters;
foreach (string name in required)
{
ret = false;
WorkflowParameter curr_param = list.FirstOrDefault(p => p.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase));
//find if override exist
if (curr_param != null && curr_param.Override != null)
{
foreach (string attr_name in curr_param.Override)
{
if (_attributes.Keys.Contains(attr_name))
{
found.Add(name, _attributes[attr_name]);
ret = true;
break;
}
}
}
else
{
if (_attributes.Keys.Contains(name))
{
found.Add(name, _attributes[name]);
ret = true;
}
}
if (!ret)
{
if (curr_param == null || curr_param.Default == null)
{
_logger.Error("Error {ErrorCode}: Attribute {Name} is not found", -11, name);
break;
}
else
{
found.Add(name, curr_param.Default);
ret = true;
}
}
}
}
args.RequiredAttributes = found;
return(ret);
}
