From 928cc11663eb1a3604b7caa7044332257e83b56b Mon Sep 17 00:00:00 2001
From: j <0x006A@0x2620.org>
Date: Tue, 18 Nov 2014 14:55:21 +0000
Subject: [PATCH] wrap annotation updates into transactions

---
 pandora/annotation/models.py | 50 +++++++++++++++++++-----------------
 pandora/annotation/tasks.py  | 19 +++++++-------
 2 files changed, 36 insertions(+), 33 deletions(-)

diff --git a/pandora/annotation/models.py b/pandora/annotation/models.py
index 555008a7..31a65332 100644
--- a/pandora/annotation/models.py
+++ b/pandora/annotation/models.py
@@ -4,7 +4,7 @@ from __future__ import division, with_statement
 import re
 import unicodedata
 
-from django.db import models
+from django.db import models, transaction
 from django.db.models import Q
 from django.contrib.auth.models import User
 from django.conf import settings
@@ -162,34 +162,36 @@ class Annotation(models.Model):
             self.sortvalue = None
             self.languages = None
 
-        if not self.clip or self.start != self.clip.start or self.end != self.clip.end:
-            self.clip, created = Clip.get_or_create(self.item, self.start, self.end)
+        with transaction.commit_on_success():
+            if not self.clip or self.start != self.clip.start or self.end != self.clip.end:
+                self.clip, created = Clip.get_or_create(self.item, self.start, self.end)
 
-        super(Annotation, self).save(*args, **kwargs)
-        if set_public_id:
-            self.set_public_id()
+            super(Annotation, self).save(*args, **kwargs)
+            if set_public_id:
+                self.set_public_id()
 
-        if self.clip:
-            Clip.objects.filter(**{
-                'id': self.clip.id,
-                self.layer: False
-            }).update(**{self.layer: True})
-            #update clip.findvalue
-            self.clip.save()
+            if self.clip:
+                Clip.objects.filter(**{
+                    'id': self.clip.id,
+                    self.layer: False
+                }).update(**{self.layer: True})
+                #update clip.findvalue
+                self.clip.save()
 
-        #editAnnotations needs to be in snyc
-        if layer.get('type') == 'place' or layer.get('hasPlaces'):
-            update_matches(self.id, 'place')
-        if layer.get('type') == 'event' or layer.get('hasEvents'):
-            update_matches(self.id, 'event')
+            #editAnnotations needs to be in snyc
+            if layer.get('type') == 'place' or layer.get('hasPlaces'):
+                update_matches(self.id, 'place')
+            if layer.get('type') == 'event' or layer.get('hasEvents'):
+                update_matches(self.id, 'event')
 
     def delete(self, *args, **kwargs):
-        super(Annotation, self).delete(*args, **kwargs)
-        if self.clip and self.clip.annotations.count() == 0:
-            self.clip.delete()
-        self.item.update_find()
-        self.item.update_sort()
-        self.item.update_facets()
+        with transaction.commit_on_success():
+            super(Annotation, self).delete(*args, **kwargs)
+            if self.clip and self.clip.annotations.count() == 0:
+                self.clip.delete()
+            self.item.update_find()
+            self.item.update_sort()
+            self.item.update_facets()
 
     def cleanup_undefined_relations(self):
         layer = self.get_layer()
diff --git a/pandora/annotation/tasks.py b/pandora/annotation/tasks.py
index 7fa71c7f..9eabd28a 100644
--- a/pandora/annotation/tasks.py
+++ b/pandora/annotation/tasks.py
@@ -100,12 +100,13 @@ def update_item(id):
     #cleanup orphaned clips
     Clip.objects.filter(item__id=a.item.id, annotations__id=None).delete()
     #update facets if needed
-    if filter(lambda f: f['id'] == a.layer and f.get('filter'), settings.CONFIG['itemKeys']):
-        a.item.update_layer_facet(a.layer)
-    Item.objects.filter(id=a.item.id).update(modified=a.modified)
-    a.item.modified = a.modified
-    a.item.update_find()
-    a.item.update_sort()
-    a.item.update_facets()
-    if a.item.update_languages():
-        a.item.save()
+    with transaction.commit_on_sucess():
+        if filter(lambda f: f['id'] == a.layer and f.get('filter'), settings.CONFIG['itemKeys']):
+            a.item.update_layer_facet(a.layer)
+        Item.objects.filter(id=a.item.id).update(modified=a.modified)
+        a.item.modified = a.modified
+        a.item.update_find()
+        a.item.update_sort()
+        a.item.update_facets()
+        if a.item.update_languages():
+            a.item.save()