From da8a6cb15762cc886d1684c037ba3f85f26c7abc Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu@tomeuvizoso.net>
Date: Tue, 08 Jan 2008 17:38:55 +0000
Subject: #5707: Delete files for external properties when an entry is deleted.

---
diff --git a/src/olpc/datastore/backingstore.py b/src/olpc/datastore/backingstore.py
index 1af0088..db955e2 100644
--- a/src/olpc/datastore/backingstore.py
+++ b/src/olpc/datastore/backingstore.py
@@ -32,6 +32,7 @@ import gobject
 from olpc.datastore.xapianindex import IndexManager
 from olpc.datastore import bin_copy
 from olpc.datastore import utils
+from olpc.datastore import model
 
 # changing this pattern impacts _targetFile
 filename_attempt_pattern = re.compile('\(\d+\)$')
@@ -599,7 +600,17 @@ class FileBackingStore(BackingStore):
         else:
             self.indexmanager.index(props)
 
+    def _delete_external_properties(self, uid):
+        external_properties = model.defaultModel.get_external_properties()
+        for property_name in external_properties:
+            file_path = os.path.join(self.base, property_name, uid)
+            if os.path.exists(file_path):
+                logging.debug('deleting external property: %r' % file_path)
+                os.unlink(file_path)
+
     def delete(self, uid, allowMissing=True):
+        self._delete_external_properties(uid)
+
         self.indexmanager.delete(uid)
         path = self._translatePath(uid)
         if os.path.exists(path):
@@ -888,6 +899,8 @@ class InplaceFileBackingStore(FileBackingStore):
         self.indexmanager.index(props, path)
         
     def delete(self, uid):
+        self._delete_external_properties(uid)
+
         c = self.indexmanager.get(uid)
         path = c.get_property('filename', None)
         self.indexmanager.delete(uid)
diff --git a/src/olpc/datastore/model.py b/src/olpc/datastore/model.py
index bb8228a..e4a3e3b 100644
--- a/src/olpc/datastore/model.py
+++ b/src/olpc/datastore/model.py
@@ -170,6 +170,13 @@ class Model(object):
             args = self.fields[fn]
             addField(args[0], **args[2])
 
+    def get_external_properties(self):
+        external_properties = []
+        for field_name in self.fields:
+            field = self.fields.get(field_name)
+            if field[1] == "external":
+                external_properties.append(field[0])
+        return external_properties
 
 # Properties we don't automatically include in properties dict
 EXCLUDED_PROPERTIES = ['fulltext', ]
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