public void Load(ref object instance, IDataRecord record, MappingContext context)
{
for (int i = 0; i < this.Properties.Count; i++)
{
Node childNode = this.Properties[i];
if (!childNode.IsComplex ||
childNode.HasConstructorParameters)
{
childNode.Read(ref instance, record, context);
continue;
}
object currentValue = childNode.Get(ref instance);
if (currentValue != null)
{
childNode.Load(ref currentValue, record, context);
}
else
{
childNode.Read(ref instance, record, context);
}
}
if (this.HasCollections)
{
if (context.SingleResult)
{
// if the query is expected to return a single result at most
// we close the data reader to allow for collections to be loaded
// using the same connection (for providers that do not support MARS)
IDataReader reader = record as IDataReader;
reader?.Close();
}
for (int i = 0; i < this.Collections.Count; i++)
{
CollectionNode collectionNode = this.Collections[i];
collectionNode.Load(ref instance, context);
}
}
}
void ReadMapping(IDataRecord record, MapGroup[] groups, MapGroup currentGroup, Node instance)
{
var constructorParameters = new Dictionary <MapParam, Node>();
foreach (var pair in currentGroup.Properties)
{
Node property = CreateSimpleProperty(instance, pair.Value, pair.Key);
if (property != null)
{
property.Container = instance;
instance.Properties.Add(property);
continue;
}
uint valueAsNumber;
if (UInt32.TryParse(pair.Value, out valueAsNumber))
{
constructorParameters.Add(new MapParam(valueAsNumber, pair.Key), null);
}
else
{
this.Log?.WriteLine("-- WARNING: Couldn't find property '{0}' on type '{1}'. Ignoring column.", pair.Value, instance.TypeName);
}
}
MapGroup[] nextLevels =
(from m in groups
where m.Depth == currentGroup.Depth + 1 && m.Parent == currentGroup.Name
select m).ToArray();
for (int i = 0; i < nextLevels.Length; i++)
{
MapGroup nextLevel = nextLevels[i];
Node property = CreateComplexProperty(instance, nextLevel.Name);
if (property != null)
{
property.Container = instance;
ReadMapping(record, groups, nextLevel, property);
instance.Properties.Add(property);
continue;
}
uint valueAsNumber;
if (UInt32.TryParse(nextLevel.Name, out valueAsNumber))
{
constructorParameters.Add(new MapParam(valueAsNumber, nextLevel), null);
}
else
{
this.Log?.WriteLine("-- WARNING: Couldn't find property '{0}' on type '{1}'. Ignoring column(s).", nextLevel.Name, instance.TypeName);
}
}
if (constructorParameters.Count > 0)
{
instance.Constructor = GetConstructor(instance, constructorParameters.Count);
ParameterInfo[] parameters = instance.Constructor.GetParameters();
int i = 0;
foreach (var pair in constructorParameters.OrderBy(p => p.Key.ParameterIndex))
{
ParameterInfo param = parameters[i];
Node paramNode;
if (pair.Key.ColumnOrdinal.HasValue)
{
paramNode = CreateParameterNode(pair.Key.ColumnOrdinal.Value, param);
}
else
{
paramNode = CreateParameterNode(param);
ReadMapping(record, groups, pair.Key.Group, paramNode);
}
if (instance.ConstructorParameters.ContainsKey(pair.Key.ParameterIndex))
{
var message = new StringBuilder();
message.AppendFormat(CultureInfo.InvariantCulture, "Already specified an argument for parameter '{0}'", param.Name);
if (pair.Key.ColumnOrdinal.HasValue)
{
message.AppendFormat(CultureInfo.InvariantCulture, " ('{0}')", record.GetName(pair.Key.ColumnOrdinal.Value));
}
message.Append(".");
throw new InvalidOperationException(message.ToString());
}
instance.ConstructorParameters.Add(pair.Key.ParameterIndex, paramNode);
i++;
}
}
if (instance.IsComplex &&
this.ManyIncludes != null)
{
var includes = this.ManyIncludes
.Where(p => p.Key.Length == currentGroup.Depth + 1)
.Where(p => {
if (instance.Container == null)
{
// root node
return(true);
}
string[] reversedBasePath = p.Key.Take(p.Key.Length - 1).Reverse().ToArray();
Node container = instance;
for (int i = 0; i < reversedBasePath.Length; i++)
{
if (container.PropertyName != reversedBasePath[i])
{
return(false);
}
container = container.Container;
}
return(true);
})
.ToArray();
for (int i = 0; i < includes.Length; i++)
{
var pair = includes[i];
string name = pair.Key[pair.Key.Length - 1];
CollectionNode collection = CreateCollectionNode(instance, name);
if (collection != null)
{
instance.Collections.Add(collection);
if (this.manyLoaders == null)
{
this.manyLoaders = new Dictionary <CollectionNode, CollectionLoader>();
}
this.manyLoaders.Add(collection, pair.Value);
}
}
}
}
