public static DataObject Construct(String key, bool quietFail = false)
{
if (!constructorMap.ContainsKey(key))
{
if (quietFail)
{
return(null);
}
throw new ParseDataException("No constructor for type: " + key);
}
Constructor constructor = constructorMap[key];
return(constructor.Construct());
}
private DataObject read(JsonObject obj, bool skipUnknownClasses = false)
{
if (obj == null)
{
return(null);
}
if (!obj.containsKey(ID))
{
return(null);
}
// First check to see if it's been created, and if so simply return it
int id = obj.getInt(ID);
if (id < seenObjects.Count)
{
DataObject seen = seenObjects[id];
if (seen != null)
{
return(seen);
}
}
// Create the (unpopulated) object and register it
String className = obj.getString(CLASS);
if (className == null)
{
return(null);
}
DataObject data = Constructor.Construct(className, skipUnknownClasses);
while (seenObjects.Count <= id)
{
seenObjects.Add(null);
}
seenObjects[id] = data;
// Instantiate the children of this object in the JSON file
// This is done to create objects whose parents may no longer
// exist in the data-structure, but who are themselves still
// referenced. This occurs when fields are removed from a class.
foreach (var kvp in obj.Entries)
{
object value = kvp.Value;
List <object> list = value as List <object>;
if (list != null)
{
foreach (object entry in list)
{
read(entry as Dictionary <string, object>, true);
}
}
read(value as Dictionary <string, object>, true);
}
// If there's not corresponding C# class, we stop here.
// This may happen if the class was deleted, but its data
// is still in an older JSON file.
if (data == null)
{
return(null);
}
// Now actually populate the object, having guaranteed
// that all its children have been created (but not
// necessarily populated!)
readObjectBody(() =>
{
makeKey(CLASS);
makeKey(ID);
data.AddFields(this);
if (data is GuidDataObject)
{
context.Add(data as GuidDataObject);
}
}, obj);
return(data);
}