protected sealed override EntityList DoGetAll(PagingInfo paging, EagerLoadOptions eagerLoad)
{
if (!PagingInfo.IsNullOrEmpty(paging))
{
throw new NotSupportedException();
}
DataProvider.EnsureStore();
var items = DataProvider._memoryRows.Values.Select(v => DataProvider.FromRow(v));
var list = this.CreateList(items, false);
TreeHelper.MarkTreeFullLoaded(list);
return(list);
}
/// <summary>
/// 重新设置整个表的所有 TreeIndex。
/// 注意，此方法只保证生成的 TreeIndex 有正确的父子关系，同时顺序有可能被打乱。
/// </summary>
/// <param name="repository"></param>
public static void ResetTreeIndex(EntityRepository repository)
{
using (var tran = RF.TransactionScope(repository))
{
//先清空
var dp = repository.RdbDataProvider;
var table = dp.DbTable;
var column = table.Columns.First(c => (c as DbColumn).Property == Entity.TreeIndexProperty);
using (var dba = dp.CreateDbAccesser())
{
dba.ExecuteText(string.Format("UPDATE {0} SET {1} = NULL", table.Name, column.Name));
}
var all = repository.GetAll();
if (all.Count > 0)
{
//如果加载的过程中，第一个节点刚好是根节点，
//则加载完成后是一棵完整的树，Index 也生成完毕，不需要再次处理。
if (all.IsTreeRootList)
{
all.ResetTreeIndex();
repository.Save(all);
}
else
{
var cloneOptions = CloneOptions.ReadSingleEntity();
var oldList = new List <Entity>();
all.EachNode(e =>
{
var cloned = repository.New();
cloned.Clone(e, cloneOptions);
cloned.PersistenceStatus = PersistenceStatus.Unchanged;
oldList.Add(cloned);
return(false);
});
var newList = repository.NewList();
while (oldList.Count > 0)
{
foreach (var item in oldList)
{
var treePId = item.TreePId;
if (treePId == null)
{
newList.Add(item);
oldList.Remove(item);
break;
}
else
{
var parent = newList.EachNode(e => e.Id.Equals(treePId));
if (parent != null)
{
parent.TreeChildren.LoadAdd(item);
oldList.Remove(item);
break;
}
}
}
}
TreeHelper.MarkTreeFullLoaded(newList);
newList.ResetTreeIndex();
repository.Save(newList);
}
}
tran.Complete();
}
}