Innovenergy_trunk/csharp/App/Backend/Database/Folder.cs

92 lines
2.4 KiB
C#

using InnovEnergy.App.Backend.Model;
using InnovEnergy.Lib.Utils;
namespace InnovEnergy.App.Backend.Database;
public static partial class Db
{
public static IEnumerable<Folder> GetChildFolders(this Folder parent)
{
return Folders.Where(f => f.ParentId == parent.Id);
}
public static IEnumerable<Installation> GetChildInstallations(this Folder parent)
{
return Installations.Where(f => f.ParentId == parent.Id);
}
public static IEnumerable<Folder> GetDescendantFolders(this Folder parent)
{
return parent.Traverse(GetChildFolders);
}
public static Boolean IsDescendantOf(this Folder folder, Int64 ancestorFolderId)
{
return Ancestors(folder)
.Any(u => u.Id == ancestorFolderId);
}
public static Boolean IsDescendantOf(this Folder folder, Folder ancestor)
{
return IsDescendantOf(folder, ancestor.Id);
}
private static IEnumerable<Folder> Ancestors(this Folder child)
{
return child.Unfold(GetParent);
}
public static Folder? GetParent(this Folder f)
{
return IsRoot(f)
? null
: GetFolderById(f.ParentId);
}
public static Boolean IsRoot(this Folder f)
{
return f.ParentId == 0; // root has ParentId 0 by definition
}
public static Int64 CreateFolder(Folder folder)
{
return Create(folder);
}
public static Boolean UpdateFolder(Folder folder)
{
// TODO: no circles in path
return Update(folder);
}
// These should not be necessary, just Update folder/installation with new parentId
// public Boolean ChangeParent(Installation child, Int64 parentId)
// {
// child.ParentId = parentId;
// return UpdateInstallation(child);
// }
//
// public Boolean ChangeParent(Folder child, Int64 parentId)
// {
// child.ParentId = parentId;
// return UpdateFolder(child);
// }
public static Boolean DeleteFolder(Folder folder)
{
// Delete direct children
User2Folder .Delete(f => f.FolderId == folder.Id);
Installations.Delete(i => i.ParentId == folder.Id);
// recursion
Folders.Where(f => f.ParentId == folder.Id)
.ForEach(DeleteFolder);
return Delete(folder);
}
}