public string Serialize(TaskInstance ti, out string taskTypeId)
{
StringWriter sw = new StringWriter();
_ser.Serialize(new JsonTextWriter(sw), ti);
taskTypeId = ti.GetType().FullName;
return sw.ToString();
}
public Dictionary<string, object> GatherOutputData(TaskInstance ti, ITaskExecutionContext ctx)
{
_pd.SetTaskInstanceInfo(ti, ctx);
string ks = DslUtil.TaskScriptKey(ti.TaskId, "AfterComplete");
if (_pd._stmts.ContainsKey(ks)) _pd._stmts[ks]();
var td = _def.GetRequiredTask(ti.TaskId);
foreach (var bd in td.OutputParameterBindings)
{
string k = DslUtil.TaskParamOutBindingKey(td.Id, bd.Target);
if (bd.BindType == DataBindingType.Expr)
{
ti.TaskData[bd.Target] = _pd._exprs[k]();
}
else if (bd.BindType == DataBindingType.CopyVar)
{
var pi = ti.GetType().GetProperty(bd.Source);
if (pi == null) throw new NGinnBPM.ProcessModel.Exceptions.TaskParameterInvalidException(bd.Source, "Property not found: " + bd.Source).SetTaskId(ti.TaskId);
ti.TaskData[bd.Target] = pi.GetValue(ti, null);
}
else if (bd.BindType == DataBindingType.Literal)
{
ti.TaskData[bd.Target] = bd.Source; //todo: type convert
}
else throw new Exception();
}
string k2 = DslUtil.TaskOutputDataBindingKey(td.Id);
if (_pd._exprs.ContainsKey(k2))
{
SC.IDictionary dic = (SC.IDictionary)_pd._exprs[k2]();
return ToTaskData(dic);
}
Dictionary<string, object> ret = new Dictionary<string, object>();
foreach (var vd in td.Variables.Where(x => x.VariableDir == ProcessModel.Data.VariableDef.Dir.Out || x.VariableDir == ProcessModel.Data.VariableDef.Dir.InOut))
{
ret[vd.Name] = ti.TaskData[vd.Name];
}
return ret;
}
public void InitializeNewTask(TaskInstance ti, Dictionary<string, object> inputData, ITaskExecutionContext ctx)
{
if (string.IsNullOrEmpty(ti.InstanceId) ||
string.IsNullOrEmpty(ti.TaskId) ||
string.IsNullOrEmpty(ti.ProcessDefinitionId) ||
string.IsNullOrEmpty(ti.ProcessInstanceId))
throw new Exception("Task not inited properly");
_pd.SetTaskInstanceInfo(ti, ctx);
TaskDef td = _def.GetRequiredTask(ti.TaskId);
if (td.Variables != null)
{
foreach (var vd in td.Variables)
{
if (vd.VariableDir == ProcessModel.Data.VariableDef.Dir.In ||
vd.VariableDir == ProcessModel.Data.VariableDef.Dir.InOut)
{
if (inputData.ContainsKey(vd.Name))
ti.TaskData[vd.Name] = inputData[vd.Name];
}
if (!ti.TaskData.ContainsKey(vd.Name))
{
var k = DslUtil.TaskVariableDefaultKey(td.Id, vd.Name);
if (_pd._exprs.ContainsKey(k))
{
ti.TaskData[vd.Name] = _pd._exprs[k]();
}
else if (!string.IsNullOrEmpty(vd.DefaultValueExpr))
{
ti.TaskData[vd.Name] = vd.DefaultValueExpr; //TODO: add type conversion
}
else if (vd.IsRequired)
throw new NGinnBPM.ProcessModel.Exceptions.DataValidationException("Required variable missing: " + vd.Name).SetTaskId(ti.TaskId).SetProcessDef(ti.ProcessDefinitionId);
}
}
}
//now initialize task parameters
if (td.InputParameterBindings != null)
{
foreach (var bd in td.InputParameterBindings)
{
var pi = ti.GetType().GetProperty(bd.Target);
if (pi == null)
{
throw new NGinnBPM.ProcessModel.Exceptions.TaskParameterInvalidException(bd.Target, "Property not found: " + bd.Target).SetTaskId(ti.TaskId);
}
string k = DslUtil.TaskParamInBindingKey(td.Id, bd.Target);
if (bd.BindType == DataBindingType.Expr)
{
pi.SetValue(ti, _pd._exprs[k](), null);
}
else if (bd.BindType == DataBindingType.CopyVar)
{
pi.SetValue(ti, ti.TaskData.ContainsKey(bd.Source) ? ti.TaskData[bd.Source] : null, null);
}
else if (bd.BindType == DataBindingType.Literal)
{
pi.SetValue(ti, Convert.ChangeType(bd.Source, pi.PropertyType), null);
}
else throw new Exception();
}
}
string ks = DslUtil.TaskScriptKey(ti.TaskId, "BeforeEnable");
if (_pd._stmts.ContainsKey(ks))
_pd._stmts[ks]();
}
