public DbCommand GetUpdateCommand(object entity, IEnumerable <string> fieldsToUpdate, EntityMetadata entityMetadata)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
if (fieldsToUpdate == null)
{
throw new ArgumentNullException(nameof(fieldsToUpdate));
}
if (entityMetadata == null)
{
throw new ArgumentNullException(nameof(entityMetadata));
}
Type entityType = entity.GetType();
string fieldsKey = fieldsToUpdate.Join();
DbCommand command;
var key = new TypeStringKey(entityType, fieldsKey);
if (updateCommandCache.TryGetValue(key, out command))
{
SetParameterValuesFromObject(command, entity, entityMetadata);
}
else
{
command = GenerateUpdateCommand(entity, fieldsToUpdate);
updateCommandCache.Add(key, command);
}
return(command);
}
public static Func <IDataReader, object> GetFactory(this IDataReader reader, Type entityType)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
if (entityType == null)
{
throw new ArgumentNullException(nameof(entityType));
}
Func <IDataReader, object> factory1 = null;
var key = new TypeStringKey(entityType, reader.GetMetadataSummary());
if (factoryCache.TryGetValue(key, out factory1))
{
return(factory1);
}
return(keyLocker.ExecuteSynchronized(key, k =>
{
Func <IDataReader, object> factory2;
if (!factoryCache.TryGetValue(k, out factory2))
{
var builder = new FromDataReaderFactoryBuilder(entityType, reader);
factory2 = builder.CreateFactory();
factoryCache[key] = factory2;
}
return factory2;
}));
}
