//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);
}
}
/// <inheritdoc/>
protected override void LoadDataToContent(DbDataReader reader, IOutputContent content)
{
if (!IsEmpty(reader))
{
var collection = (OutputContentCollection)content;
if (HasCollectionProperty)
{
string key = string.Join("_", ItemKeyFields.Select(a => reader.GetValue(a).ToString()).ToArray());
if (!collection.TryGetValue(key, out OutputContentObject item))
{
item = CreateContentItem(reader);
collection.Add(key, item);
}
base.LoadDataToContent(reader, item);
}
else
{
collection.Add(CreateObjectItem(reader));
}
}
}
