public async Task <object> Invoke(object context)
{
var evaluationContext = new ContextFrame {
Scope = context, Step = this,
};
// check the existence of the object
var check = false;
try
{
await Interpolate(Name);
check = true;
}
catch (Exception)
{
}
if (!check)
{
// create list if not exist
var List = new List <dynamic>();
await Interpolator.AssignValueOnDynamic(context, Name, List);
}
var expressionValue = await Interpolate(Expression);
var result = await AppendValueOnDynamic(Name, expressionValue);
Task <object> Interpolate(string expression) => Interpolator.InterpolateExpression(expression, evaluationContext);
Task <object> AppendValueOnDynamic(string name, dynamic value) => Interpolator.AppendValueOnDynamic(context, name, value);
return(result);
}
public async Task <object> Invoke(object context)
{
dynamic ctx = context;
foreach (var item in Items)
{
var itemResult = await item.Invoke(context);
if (item.Definition.ContainsKey("_resultTo"))
{
var contextFrame = new ContextFrame {
Scope = context, Step = this
};
var key = item.Definition["_resultTo"];
await Interpolator.AssignValueOnDynamic(context, key, itemResult);
}
}
return(await Task.FromResult((object)true));
}
public async Task <object> Invoke(object context)
{
dynamic ctx = context;
var contextFrame = new ContextFrame {
Scope = context, Step = this
};
var items = await Interpolator.InterpolateExpression(InExpression, contextFrame);
var varName = VarName ?? "Scope.Item";
if (items is IEnumerable itemsCollection)
{
foreach (var item in itemsCollection)
{
await Interpolator.AssignValueOnDynamic(context, varName, item);
await LoopTask.Invoke(context);
}
}
return(true);
}
public async Task <object> Invoke(object context)
{
var evaluationContext = new ContextFrame {
Scope = context, Step = this,
};
if (!(Expression is string))
{
// get result object
//var resultObject = Interpolate(Name).Result;
//var resultList = new List<dynamic>();
try
{
var dictionary = (IDictionary <string, dynamic>)Expression;
await AssignValueOnDynamic(Name, new System.Dynamic.ExpandoObject());
//context.Result = new System.Dynamic.ExpandoObject();
//var iss = new System.Dynamic.ExpandoObject();
foreach (var expressionItem in dictionary)
{
if (expressionItem.Value is string)
{
await AssignValue(expressionItem.Value, Name + "." + expressionItem.Key);
}
else if (expressionItem.Value is object)
{
try
{
var dc = (IDictionary <string, dynamic>)expressionItem.Value;
dynamic selector;
dynamic expression;
if (dc.TryGetValue("selector", out selector))
{
var definition = new Dictionary <string, dynamic>()
{
{ "from", FromNode }, { "selector", selector }
};
SelectNodes.InitializeFromJson(definition);
var result = SelectNodes.Invoke(context).Result;
if (dc.TryGetValue("expression", out expression))
{
var expressionValue = "";
if (result != null)
{
var ResultContext = new Marshal()
{
Result = result
};
expressionValue = await Interpolator.InterpolateExpression(expression, ResultContext);
}
await AssignValueOnDynamic(Name + "." + expressionItem.Key, expressionValue);
}
}
}
catch (Exception)
{
throw;
}
}
}
}
catch (Exception)
{
throw;
}
}
else
{
await AssignValue(Expression, Name);
}
async Task <object> AssignValue(string expression, string name)
{
var expressionValue = await Interpolate(expression);
return(await AssignValueOnDynamic(name, expressionValue));
}
Task <object> Interpolate(string expression) => Interpolator.InterpolateExpression(expression, evaluationContext);
Task <object> AssignValueOnDynamic(string name, dynamic expressionValue) => Interpolator.AssignValueOnDynamic(context, name, expressionValue);
return(Name);
}
