Remove get_metadata cache

src/calibre/gui2/ui.py

@@ -19,7 +19,7 @@ from PyQt4.Qt import Qt, SIGNAL, QTimer, \
                      QMessageBox, QHelpEvent
 
 from calibre import  prints
-from calibre.constants import __appname__, isosx, DEBUG
+from calibre.constants import __appname__, isosx
 from calibre.ptempfile import PersistentTemporaryFile
 from calibre.utils.config import prefs, dynamic
 from calibre.utils.ipc.server import Server
@@ -590,9 +590,6 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin, # {{{
             # Goes here, because if cf is valid, db is valid.
             db.prefs['field_metadata'] = db.field_metadata.all_metadata()
             db.commit_dirty_cache()
-            if DEBUG and db.gm_count > 0:
-                print 'get_metadata cache: {0:d} calls, {1:4.2f}% misses'.format(
-                        db.gm_count, (db.gm_missed*100.0)/db.gm_count)
         for action in self.iactions.values():
             if not action.shutting_down():
                 return

src/calibre/library/caches.py

@@ -598,7 +598,6 @@ class ResultCache(SearchQueryParser): # {{{
 
     def set(self, row, col, val, row_is_id=False):
         id = row if row_is_id else self._map_filtered[row]
-        self._data[id][self.FIELD_MAP['all_metadata']] = None
         self._data[id][col] = val
 
     def get(self, row, col, row_is_id=False):
@@ -629,7 +628,6 @@ class ResultCache(SearchQueryParser): # {{{
                 self._data[id] = CacheRow(db, self.composites,
                         db.conn.get('SELECT * from meta2 WHERE id=?', (id,))[0])
                 self._data[id].append(db.book_on_device_string(id))
-                self._data[id].append(None)
             except IndexError:
                 return None
         try:
@@ -646,7 +644,6 @@ class ResultCache(SearchQueryParser): # {{{
             self._data[id] = CacheRow(db, self.composites,
                         db.conn.get('SELECT * from meta2 WHERE id=?', (id,))[0])
             self._data[id].append(db.book_on_device_string(id))
-            self._data[id].append(None)
         self._map[0:0] = ids
         self._map_filtered[0:0] = ids
 
@@ -671,7 +668,6 @@ class ResultCache(SearchQueryParser): # {{{
         for item in self._data:
             if item is not None:
                 item.append(db.book_on_device_string(item[0]))
-                item.append(None)
         self._map = [i[0] for i in self._data if i is not None]
         if field is not None:
             self.sort(field, ascending)

src/calibre/library/database2.py

@@ -298,10 +298,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                             base,
                             prefer_custom=True)
 
-        self.FIELD_MAP['ondevice'] = base+1
-        self.field_metadata.set_field_record_index('ondevice', base+1, prefer_custom=False)
-        self.FIELD_MAP['all_metadata'] = base+2
-        self.field_metadata.set_field_record_index('all_metadata', base+2, prefer_custom=False)
+        self.FIELD_MAP['ondevice'] = base = base+1
+        self.field_metadata.set_field_record_index('ondevice', base, prefer_custom=False)
 
         script = '''
         DROP VIEW IF EXISTS meta2;
@@ -690,19 +688,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         '''
         row = self.data._data[idx] if index_is_id else self.data[idx]
         fm = self.FIELD_MAP
-
-        self.gm_count += 1
-        mi = row[self.FIELD_MAP['all_metadata']]
-        if mi is not None:
-            if get_cover:
-                # Always get the cover, because the value can be wrong if the
-                # original mi was from the OPF
-                mi.cover = self.cover(idx, index_is_id=index_is_id, as_path=True)
-            return mi
-
-        self.gm_missed += 1
         mi = Metadata(None)
-        self.data.set(idx, fm['all_metadata'], mi, row_is_id = index_is_id)
 
         aut_list = row[fm['au_map']]
         aut_list = [p.split(':::') for p in aut_list.split(':#:')]

src/calibre/library/field_metadata.py

@@ -162,15 +162,6 @@ class FieldMetadata(dict):
                            'search_terms':['tags', 'tag'],
                            'is_custom':False,
                            'is_category':True}),
-            ('all_metadata',{'table':None,
-                             'column':None,
-                             'datatype':None,
-                             'is_multiple':None,
-                             'kind':'field',
-                             'name':None,
-                             'search_terms':[],
-                             'is_custom':False,
-                             'is_category':False}),
             ('author_sort',{'table':None,
                             'column':None,
                             'datatype':'text',