/// <summary>
/// 执行结果。
/// </summary>
/// <param name="reader">数据读取器。</param>
/// <returns>执行结果。</returns>
public IEnumerable <object> GetResult(DbDataReader reader)
{
if (Initialize())
{
var type = typeof(HashSet <>).MakeGenericType(Metadata.ClrType);
var items = new OutputContentCollection(this, Activator.CreateInstance(type));
while (reader.Read())
{
RegisterItem(reader, items);
}
return(items);
}
return(GetResultObjectItem(reader));
}
/// <summary>
/// 执行结果。
/// </summary>
/// <param name="reader">数据读取器。</param>
/// <returns>执行结果。</returns>
public IEnumerable <object> GetResult(DbDataReader reader)
{
Initialize();
if (!HasCollectionProperty)
{
return(CreateSimpleCollection(reader));
}
else
{
var type = typeof(HashSet <>).MakeGenericType(Metadata.ClrType);
var items = new OutputContentCollection((CollectionOutputInfo)this, Activator.CreateInstance(type));
while (reader.Read())
{
LoadDataToContent(reader, items);
}
return(items.Content as IEnumerable <object>);
}
}
//注册使用内容项，用于生成集合属性用。
private void RegisterItem(DbDataReader reader, OutputContentCollection collection)
{
string key = string.Join("_", ItemKeyFields.Select(a => reader.GetValue(a).ToString()).ToArray());
if (!collection.TryGetValue(key, out OutputContentItem item))
{
item = new OutputContentItem();
var content = CreateItem(reader, item);
if (content != null)
{
item.Content = content;
collection.Add(key, item);
}
}
foreach (var kv in item.Collections)
{
kv.Key.RegisterItem(reader, kv.Value);
}
}