public void VisitKeyValue(KeyValueExpression keyValue)
{
if (_refID.Top == keyValue.Key)
{
Visit(keyValue.ValueExpression);
}
else
{
throw new Exception("Unable to resolve reference: " + _refID);
}
}
public virtual void Visit(KeyValueExpression expression)
{
expression.KeyExpression.Accept(this);
expression.ValueExpression.Accept(this);
}
protected virtual void EvaluateItem(object existingObject, IDeserializerHandler deserializer, ITypeData typeHandler, KeyValueExpression Item)
{
// evaluate the item and let it assign itself?
IPropertyData hndlr = typeHandler.FindPropertyByAlias(Item.Key);
if (hndlr == null)
{
switch (this.Settings.MissingPropertyAction)
{
case MissingPropertyOptions.Ignore:
return;
case MissingPropertyOptions.ThrowException:
throw new Exception(string.Format("Could not find property {0} for type {1}", Item.Key, typeHandler.ForType));
default:
throw new InvalidOperationException("Unhandled MissingPropertyAction: " + this.Settings.MissingPropertyAction);
}
}
if (hndlr.Ignored)
{
switch (Settings.IgnoredPropertyAction)
{
case IgnoredPropertyOption.Ignore:
return;
case IgnoredPropertyOption.SetIfPossible:
if (!hndlr.CanWrite)
{
return;
}
break;
case IgnoredPropertyOption.ThrowException:
throw new Exception(string.Format("Can not set property {0} for type {1} because it is ignored and IgnorePropertyAction is set to ThrowException", Item.Key, typeHandler.ForType));
}
}
Expression valueExpression = Item.ValueExpression;
valueExpression.ResultType = hndlr.PropertyType;
object result = null;
TypeConverterExpressionHandler converterHandler = null;
IJsonTypeConverter converter = null;
if (hndlr.HasConverter)
{
converterHandler = (TypeConverterExpressionHandler)Settings.ExpressionHandlers.Find(typeof(TypeConverterExpressionHandler));
converter = hndlr.TypeConverter;
}
if (!hndlr.CanWrite)
{
result = hndlr.GetValue(existingObject);
if (converterHandler != null)
{
converterHandler.Evaluate(valueExpression, result, deserializer, converter);
}
else
{
deserializer.Evaluate(valueExpression, result);
}
}
else
{
if (hndlr.HasConverter)
{
hndlr.SetValue(existingObject, converterHandler.Evaluate(valueExpression, deserializer, converter));
}
else
{
hndlr.SetValue(existingObject, deserializer.Evaluate(valueExpression));
}
}
}
public void Visit(KeyValueExpression KeyValue)
{
Visit(KeyValue.ValueExpression);
}
