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 virtual void SaveNew(TaskInstance ti)
{
if (string.IsNullOrEmpty(ti.InstanceId)) throw new Exception("Missing instance ID");
if (_cache.ContainsKey(ti.InstanceId)) throw new Exception("Task already exists");
string typeId;
var th = new TaskHolder
{
State = RecordState.New,
Deserialized = ti,
TaskData = _ser.Serialize(ti, out typeId)
};
th.TaskTypeId = typeId;
_cache[ti.InstanceId] = th;
}
public virtual void Update(TaskInstance ti)
{
TaskHolder th;
if (!_cache.TryGetValue(ti.InstanceId, out th))
{
throw new Exception("Task not cached");
}
if (th.State == RecordState.Unmodified)
{
th.State = RecordState.Modified;
}
string typeId;
th.TaskData = _ser.Serialize(ti, out typeId);
th.TaskTypeId = typeId;
}
public override void Update(TaskInstance ti)
{
var ph = GetProcessRecord(ti.ProcessInstanceId, true);
if (ph == null) throw new Exception("Process instance not found: " + ti.ProcessInstanceId);
var i2 = ph.TaskInstances.FindIndex(x => x.InstanceId == ti.InstanceId);
if (i2 < 0) throw new Exception("Task not found: " + ti.InstanceId);
ph.TaskInstances[i2] = ti;
}
public override void SaveNew(TaskInstance ti)
{
var ph = GetProcessRecord(ti.ProcessInstanceId, true);
if (ph == null)
{
//new instance
ph = new ProcessHolder
{
ProcessInstance = ti.ProcessInstanceId,
State = RecordState.New,
IsForUpdate = true,
DbVersion = null,
TaskInstances = new List<TaskInstance>()
};
ph.TaskInstances.Add(ti);
_cache[ph.ProcessInstance] = ph;
}
else
{
var i2 = ph.TaskInstances.FindIndex(x => x.InstanceId == ti.InstanceId);
if (i2 >= 0) throw new Exception("Task already exists: " + ti.InstanceId);
ph.TaskInstances.Add(ti);
if (ph.State == RecordState.Unmodified) ph.State = RecordState.Modified;
}
}
public void SetTaskInstanceInfo(TaskInstance ti, ITaskExecutionContext ctx)
{
this.Task = ti;
this.TaskData = new QuackTaskDataWrapper(ti.TaskData);
this.Context = ctx;
}
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 ExecuteTaskScriptBlock(TaskInstance ti, string blockName, ITaskExecutionContext ctx)
{
string k = DslUtil.TaskScriptKey(ti.TaskId, blockName);
_pd.SetTaskInstanceInfo(ti, ctx);
try
{
Action act;
if (_pd._stmts.TryGetValue(k, out act) && act != null)
{
act();
}
}
catch (Exception ex)
{
throw;
}
}
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]();
}
public void SetTaskScriptContext(TaskInstance task, Dictionary<string, object> inputData, Dictionary<string, object> outputData)
{
throw new NotImplementedException();
//_pd.SetTaskInstanceInfo(task, ctx);
_pd.SetInputData(inputData);
_pd.SetOutputData(outputData);
}
public bool EvalFlowCondition(TaskInstance ti, ProcessModel.FlowDef fd, ITaskExecutionContext ctx)
{
_pd.SetTaskInstanceInfo(ti, ctx);
string k = DslUtil.FlowConditionKey(fd.Parent.Id, fd.From, fd.To);
if (!_pd._conds.ContainsKey(k)) throw new Exception("!no flow cond..");
_pd.SetTaskInstanceInfo(ti, ctx);
return _pd._conds[k]();
}
public void ExecuteTaskScriptBlock(TaskInstance ti, string blockName, ITaskExecutionContext ctx)
{
throw new NotImplementedException();
}
public void SetTaskScriptContext(TaskInstance task, Dictionary<string, object> inputData, Dictionary<string, object> outputData)
{
throw new NotImplementedException();
}
