public override bool TryGetValue(IJSONDocument document, out AttributeValue[] value)
{
value = null;
string currentAttribute = _attribute.Name;
if (document.Contains(currentAttribute))
{
ExtendedJSONDataTypes type = document.GetAttributeDataType(currentAttribute);
switch (type)
{
case ExtendedJSONDataTypes.Array:
Array objectsArray = document.GetArray <object>(currentAttribute);
return(TryGetArray(objectsArray, out value));
default:
IComparable dataValue;
if (document.TryGet(currentAttribute, out dataValue))
{
if (dataValue != null)
{
value = new AttributeValue[] { new SingleAttributeValue(dataValue) };
}
else
{
value = new[] { NullValue.Null };
}
return(true);
}
return(false);
}
}
return(false);
}
/// <summary>
/// Gets the type of value at specified column index.
/// </summary>
/// <param name="index">Index of the column (0 based index)</param>
/// <returns>Type of value at the specified index.</returns>
public override Type GetFieldType(int index)
{
if (index >= 0 && _attributeCols.Count > index && _dbReader != null)
{
ExtendedJSONDataTypes type = _dbReader.GetAttributeDataType(_attributeCols[index].ToString());
switch (type)
{
case ExtendedJSONDataTypes.Boolean:
return(typeof(bool));
case ExtendedJSONDataTypes.DateTime:
return(typeof(DateTime));
case ExtendedJSONDataTypes.Number:
return(typeof(double));
case ExtendedJSONDataTypes.Null:
return(typeof(string)); // nullable string...
case ExtendedJSONDataTypes.Array:
return(typeof(Array));
case ExtendedJSONDataTypes.Object:
return(typeof(object));
case ExtendedJSONDataTypes.String:
return(typeof(string));
}
}
throw new Exception("Index is not valid. Use [name] if * is used in the Query.");
}
private static void ExpandAttribute(IJSONDocument source, Queue <string> attributeQueue, object newValue)
{
string currentAttribute = attributeQueue.Dequeue();
bool lastAttribute = attributeQueue.Count == 0;
if (lastAttribute)
{
source[currentAttribute] = newValue;
}
else
{
if (source.Contains(currentAttribute))
{
ExtendedJSONDataTypes type = source.GetAttributeDataType(currentAttribute);
switch (type)
{
case ExtendedJSONDataTypes.Object:
//Recurecurecurecurecurecurecurecurecurecurecurecurecurecurecursion
ExpandAttribute(source.GetDocument(currentAttribute), attributeQueue, newValue);
break;
default:
IJSONDocument subDocument = JSONType.CreateNew();
source[currentAttribute] = subDocument;
ExpandAttribute(subDocument, attributeQueue, newValue);
break;
}
}
else
{
IJSONDocument subDocument = JSONType.CreateNew();
source[currentAttribute] = subDocument;
ExpandAttribute(subDocument, attributeQueue, newValue);
}
}
}
public void UpdateAttribute(IJSONDocument document, IJsonValue newValue)
{
if (document.Contains(_name))
{
if (_indecies != null && _indecies.Length > 0)
{
ExtendedJSONDataTypes type = document.GetAttributeDataType(_name);
if (type == ExtendedJSONDataTypes.Array)
{
List <IJsonValue> ijsonList = JsonDocumentUtil.ToIJsonList((IEnumerable)document[_name]);
if (_indecies != null && _indecies.Length > 0)
{
if (_childAttribute != null && ijsonList.Count > _indecies[0])
{
if (ijsonList[_indecies[0]].Value is IJSONDocument)
{
_childAttribute.UpdateAttribute(ijsonList[_indecies[0]].Value as IJSONDocument, newValue);
}
}
else
{
// Update value in list and replace list in the document.
ijsonList[_indecies[0]] = newValue;
var values = new ArrayList(ijsonList.Count);
foreach (var jsonValue in ijsonList)
{
values.Add(jsonValue.Value);
}
document[_name] = values.ToArray();
}
}
else
{
foreach (IJsonValue jsondoc in ijsonList)
{
((JSONDocument)jsondoc.Value)[_name] = newValue.Value;
}
}
}
}
else
{
if (_childAttribute != null)
{
if (document[_name] is IJSONDocument)
{
_childAttribute.UpdateAttribute(document[_name] as IJSONDocument, newValue);
}
else
{
ExtendedJSONDataTypes type = document.GetAttributeDataType(_name);
if (type == ExtendedJSONDataTypes.Array)
{
List <IJsonValue> ijsonList = JsonDocumentUtil.ToIJsonList((IEnumerable)document[_name]);
foreach (IJsonValue jsondoc in ijsonList)
{
_childAttribute.UpdateAttribute((JSONDocument)jsondoc.Value, newValue);
}
}
}
}
else
{
document[_name] = newValue.Value;
}
}
}
else
{
document[_name] = newValue.Value;
}
}