private JsValue ConstructGrouping(List <BlittableJsonReaderObject> values)
{
var jsValues = ConstructValues();
var jsKey = ConstructKey();
var result = new ObjectInstance(Engine);
result.Set("values", jsValues, false);
result.Set("key", jsKey, false);
return(result);
JsValue ConstructKey()
{
if (_singleField)
{
var index = values[0].GetPropertyIndex(_groupByFields[0].Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
return(JsValue.FromObject(Engine, prop.Value));
}
return(JsValue.Null);
}
var key = new ObjectInstance(Engine);
foreach (var groupByField in _groupByFields)
{
var index = values[0].GetPropertyIndex(groupByField.Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
var propertyName = groupByField.Name;
if (groupByField is JsNestedField jsnf)
{
propertyName = jsnf.PropertyName;
}
var value = groupByField.GetValue(null, prop.Value);
key.Set(propertyName, JsValue.FromObject(Engine, value), throwOnError: false);
}
}
return(key);
}
ArrayInstance ConstructValues()
{
var items = new PropertyDescriptor[values.Count];
for (var i = 0; i < values.Count; i++)
{
var val = values[i];
if (JavaScriptIndexUtils.GetValue(Engine, val, out var jsValue, isMapReduce: true) == false)
{
continue;
}
items[i] = new PropertyDescriptor(jsValue, true, true, true);
}
var jsArray = new ArrayInstance(Engine, items);
jsArray.SetPrototypeOf(Engine.Array.PrototypeObject);
jsArray.PreventExtensions();
return(jsArray);
}
}
private JsValue ConstructGrouping(List <BlittableJsonReaderObject> values)
{
var jsValues = ConstructValues();
var jsKey = ConstructKey();
var result = new ObjectInstance(Engine);
result.Set("values", jsValues, false);
result.Set("key", jsKey, false);
return(result);
JsValue ConstructKey()
{
if (_singleField)
{
var index = values[0].GetPropertyIndex(_groupByFields[0].Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
return(JsValue.FromObject(Engine, prop.Value));
}
return(JsValue.Null);
}
var key = new ObjectInstance(Engine);
foreach (var groupByField in _groupByFields)
{
var index = values[0].GetPropertyIndex(groupByField.Name);
if (index != -1)
{
BlittableJsonReaderObject.PropertyDetails prop = default;
values[0].GetPropertyByIndex(index, ref prop);
var propertyName = groupByField.Name;
if (groupByField is JsNestedField jsnf)
{
propertyName = jsnf.PropertyName;
}
var value = groupByField.GetValue(null, prop.Value);
JsValue jsValue = value switch
{
BlittableJsonReaderObject bjro => new BlittableObjectInstance(Engine, null, bjro, null, null, null),
Document doc => new BlittableObjectInstance(Engine, null, doc.Data, doc),
LazyStringValue lsv => new JsString(lsv.ToString()),
LazyCompressedStringValue lcsv => new JsString(lcsv.ToString()),
LazyNumberValue lnv => new JsNumber(lnv.ToDouble(CultureInfo.InvariantCulture)),
_ => JsValue.FromObject(Engine, value)
};
key.Set(propertyName, jsValue, throwOnError: false);
}
}
return(key);
}
ArrayInstance ConstructValues()
{
var items = new PropertyDescriptor[values.Count];
for (var i = 0; i < values.Count; i++)
{
var val = values[i];
if (JavaScriptIndexUtils.GetValue(Engine, val, out var jsValue, isMapReduce: true) == false)
{
continue;
}
items[i] = new PropertyDescriptor(jsValue, true, true, true);
}
var jsArray = new ArrayInstance(Engine, items);
jsArray.SetPrototypeOf(Engine.Array.PrototypeObject);
jsArray.PreventExtensions();
return(jsArray);
}
}
