/// <summary>
/// Return value from path going from this object
/// </summary>
/// <param name="propertyPath"> Path formated like <ObjectReference>.<ListProperty>.<ListIndex>.<PropertyName> </param>
/// <returns></returns>
public NdfValueWrapper GetValueFromQuery(string query)
{
string rest = string.Empty;
string next = NdfQueryReader.ParseNextStep(query, out rest);
if (!string.IsNullOrEmpty(next))
{
NdfPropertyValue nextproperty = GetProperty(next);
if (nextproperty == null)
{
switch (nextproperty.Type)
{
case Types.NdfType.ObjectReference:
NdfObjectReference reference = nextproperty.Value as NdfObjectReference;
return reference.Instance.GetValueFromQuery(rest);
case Types.NdfType.MapList:
NdfMapList mapList = nextproperty.Value as NdfMapList;
return mapList.GetValueFromQuery(rest);
case Types.NdfType.List:
NdfCollection list = nextproperty.Value as NdfCollection;
return list.GetValueFromQuery(rest);
default:
return nextproperty.Value;
}
}
}
throw(new Exception("Something went wrong with this path: " + query != string.Empty ? query:"Empty Path"));
}
/// <summary>
/// Return true if it succeded getting a property from the query and output it.
/// </summary>
/// <param name="query"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool TryGetValueFromQuery(string query, out NdfValueWrapper value)
{
string rest = string.Empty;
string next = NdfQueryReader.ParseNextStep(query, out rest);
if(!string.IsNullOrEmpty(next))
{
NdfPropertyValue nextproperty;
if (TryGetProperty(next, out nextproperty))
{
switch (nextproperty.Type)
{
case Types.NdfType.ObjectReference:
NdfObjectReference reference = nextproperty.Value as NdfObjectReference;
if (string.IsNullOrEmpty(rest))
{
value = reference;
return true;
}
return reference.Instance.TryGetValueFromQuery(rest, out value);
case Types.NdfType.MapList:
NdfMapList mapList = nextproperty.Value as NdfMapList;
if (string.IsNullOrEmpty(rest))
{
value = mapList;
return true;
}
return mapList.TryGetValueFromQuery(rest, out value);
case Types.NdfType.List:
NdfCollection list = nextproperty.Value as NdfCollection;
if (string.IsNullOrEmpty(rest))
{
value = list;
return true;
}
return list.TryGetValueFromQuery(rest, out value);
case Types.NdfType.Unknown :
break;
case Types.NdfType.Unset:
break;
default:
value = nextproperty.Value;
return true;
}
}
}
value = null;
return false;
}
/// <summary>
/// Reads the value of a Property inside a object instance.
/// </summary>
/// <param name="ms"></param>
/// <param name="triggerBreak"></param>
/// <param name="prop"></param>
/// <returns>A NdfValueWrapper Instance.</returns>
protected NdfValueWrapper ReadValue(MemoryStream ms, out bool triggerBreak, NdfPropertyValue prop)
{
var buffer = new byte[4];
uint contBufferlen;
NdfValueWrapper value;
triggerBreak = false;
ms.Read(buffer, 0, buffer.Length);
var type = NdfTypeManager.GetType(buffer);
if (type == NdfType.Reference)
{
ms.Read(buffer, 0, buffer.Length);
type = NdfTypeManager.GetType(buffer);
}
switch (type)
{
case NdfType.WideString:
case NdfType.List:
case NdfType.MapList:
ms.Read(buffer, 0, buffer.Length);
contBufferlen = BitConverter.ToUInt32(buffer, 0);
break;
default:
contBufferlen = NdfTypeManager.SizeofType(type);
break;
}
if (type == NdfType.Unknown)
{
//var t = _unknownTypes.SingleOrDefault(x => Utils.ByteArrayCompare(x, buffer));
//if (t == default(byte[]))
//{
// _unknownTypes.Add(buffer);
// _unknownTypesCount.Add(1);
//}
//else
// _unknownTypesCount[_unknownTypes.IndexOf(t)]++;
triggerBreak = true;
return(new NdfUnkown(buffer, ms.Position));
}
if (type == NdfType.List || type == NdfType.MapList)
{
NdfCollection lstValue;
if (type == NdfType.List)
{
lstValue = new NdfCollection(ms.Position);
}
else
{
lstValue = new NdfMapList(ms.Position);
}
CollectionItemValueHolder res;
for (int i = 0; i < contBufferlen; i++)
{
if (type == NdfType.List)
{
res = new CollectionItemValueHolder(ReadValue(ms, out triggerBreak, prop), this, prop.InstanceOffset);
}
else
{
res = new CollectionItemValueHolder(
new NdfMap(
new MapValueHolder(ReadValue(ms, out triggerBreak, prop), this, prop.InstanceOffset),
new MapValueHolder(ReadValue(ms, out triggerBreak, prop), this, prop.InstanceOffset),
ms.Position),
this, prop.InstanceOffset);
}
lstValue.Add(res);
if (triggerBreak)
{
break;
}
}
value = lstValue;
}
else if (type == NdfType.Map)
{
value = new NdfMap(
new MapValueHolder(ReadValue(ms, out triggerBreak, prop), this, prop.InstanceOffset),
new MapValueHolder(ReadValue(ms, out triggerBreak, prop), this, prop.InstanceOffset),
ms.Position);
}
else
{
var contBuffer = new byte[contBufferlen];
ms.Read(contBuffer, 0, contBuffer.Length);
if (prop != null)
{
prop.ValueData = contBuffer;
}
value = NdfTypeManager.GetValue(contBuffer, type, this, ms.Position - contBuffer.Length);
}
return(value);
}
