From bddeb987363e017effdf79acf2f3dbf0f3949f05 Mon Sep 17 00:00:00 2001
From: Qwlouse <klaus.greff@gmx.net>
Date: Tue, 7 Jan 2014 22:19:48 +0100
Subject: [PATCH 1/2] added delete node command

---
 .../management/commands/delete_node.py        | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 node_storage/management/commands/delete_node.py

diff --git a/node_storage/management/commands/delete_node.py b/node_storage/management/commands/delete_node.py
new file mode 100644
index 0000000..aa35632
--- /dev/null
+++ b/node_storage/management/commands/delete_node.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# coding=utf-8
+# region License
+# Findeco is dually licensed under GPLv3 or later and MPLv2.
+#
+################################################################################
+# Copyright (c) 2012 Klaus Greff <klaus.greff@gmx.net>
+# This file is part of Findeco.
+#
+# Findeco is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# Findeco is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# Findeco. If not, see <http://www.gnu.org/licenses/>.
+################################################################################
+#
+################################################################################
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#endregion #####################################################################
+
+from __future__ import division, print_function, unicode_literals
+
+from django.core.management import BaseCommand
+from node_storage.path_helpers import get_node_for_path
+from node_storage.tools import delete_node
+
+
+class Command(BaseCommand):
+    args = '<NodePath>'
+    help = 'Delete a node and all children, votes, posts, derivates, ' \
+           'cache entries, arguments, and empty parents associated with it. '\
+           'BE CAREFUL: This operation cannot be undone! Backup your Database!'
+
+    def handle(self, *args, **options):
+        if len(args) < 1:
+            print("You have to provide a <NodePath>.")
+
+        if len(args) > 1:
+            print("Please provide exactly one argument!")
+
+        node_path = args[0]
+
+        node = get_node_for_path(node_path)
+        assert node, "Node for path '%s' does not exist." % node_path
+
+        delete_node(node)
\ No newline at end of file

From 918c6d5eaa7495ba9338afb6080832aec27b081a Mon Sep 17 00:00:00 2001
From: Qwlouse <klaus.greff@gmx.net>
Date: Tue, 7 Jan 2014 22:52:05 +0100
Subject: [PATCH 2/2] delete node now also deletes index cache of parents

---
 node_storage/path_helpers.py | 4 ++++
 node_storage/tools.py        | 7 +++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/node_storage/path_helpers.py b/node_storage/path_helpers.py
index d5dc9e3..ac957e3 100644
--- a/node_storage/path_helpers.py
+++ b/node_storage/path_helpers.py
@@ -91,3 +91,7 @@ def get_good_path_for_structure_node(node, slot=None, slot_path=None):
         return slot_path + '.' + str(node.get_index(slot))
     else:
         return node.get_a_path()
+
+
+def get_all_paths_for_node(node):
+    return PathCache.objects.filter(node=node).values_list('path', flat=True)
\ No newline at end of file
diff --git a/node_storage/tools.py b/node_storage/tools.py
index a40acf8..de910dc 100644
--- a/node_storage/tools.py
+++ b/node_storage/tools.py
@@ -28,12 +28,13 @@
 from __future__ import division, print_function, unicode_literals
 from django.core.exceptions import ObjectDoesNotExist
 from microblogging import delete_posts_referring_to
-from node_storage.models import PathCache, TextCache, Vote, Argument
+from node_storage.models import TextCache, Vote, Argument
 from node_storage.models import IndexCache, Node
+from node_storage.path_helpers import get_all_paths_for_node
 
 
 def delete_node(node):
-    paths = PathCache.objects.filter(node=node).all()
+    paths = get_all_paths_for_node(node)
     TextCache.objects.filter(path__in=paths).delete()
     IndexCache.objects.filter(path__in=paths).delete()
 
@@ -56,6 +57,8 @@ def delete_node(node):
     for p in parents:
         try:
             parent = Node.objects.get(id=p.id)
+            parent_paths = get_all_paths_for_node(parent)
+            IndexCache.objects.filter(path__in=parent_paths).delete()
             if parent.children.count() == 0:
                 delete_node(parent)
             else: