/// <summary>
/// 将当前章节升级
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool OutlineToLeft(int couid, int id)
{
//当前对象
Outline current = Gateway.Default.From <Outline>().Where(Outline._.Ol_ID == id).ToFirst <Outline>();
//当前父对象
Outline parent = Gateway.Default.From <Outline>().Where(Outline._.Ol_ID == current.Ol_PID).ToFirst <Outline>();
//顶级列表
Song.Entities.Outline[] top = Gateway.Default.From <Outline>()
.Where(Outline._.Ol_Tax > parent.Ol_Tax && Outline._.Cou_ID == current.Cou_ID && Outline._.Ol_PID == parent.Ol_PID)
.OrderBy(Outline._.Ol_Tax.Asc).ToArray <Outline>();
//当前父的同级中，比自己大的子级（即自身后面的）
Song.Entities.Outline[] child = Gateway.Default.From <Outline>()
.Where(Outline._.Ol_Tax > current.Ol_Tax && Outline._.Cou_ID == current.Cou_ID && Outline._.Ol_PID == current.Ol_PID)
.OrderBy(Outline._.Ol_Tax.Asc).ToArray <Outline>();
//
using (DbTrans tran = Gateway.Default.BeginTrans())
{
try
{
current.Ol_PID = 0;
current.Ol_Level = 0;
current.Ol_Tax = parent.Ol_Tax + 1;
current.Attach();
tran.Save <Outline>(current);
//处理升级后的顶级排序问题
for (int i = 0; i < top.Length; i++)
{
top[i].Ol_Tax = top[i].Ol_Tax + 1;
top[i].Attach();
tran.Save <Outline>(top[i]);
}
//处理升级后，同级的子级的排序号
for (int i = 0; i < child.Length; i++)
{
child[i].Ol_Tax = i + 1;
child[i].Ol_PID = current.Ol_ID;
child[i].Ol_Level = 1;
child[i].Attach();
tran.Save <Outline>(child[i]);
}
tran.Commit();
}
catch
{
tran.Rollback();
throw;
}
finally
{
tran.Close();
}
}
this.OnSave(null, EventArgs.Empty);
return(true);
}