Add ability to create a composite column containing the virtual libraries that the book is a member of.

Intermediate commit -- still testing

src/calibre/gui2/search_restriction_mixin.py

@@ -332,6 +332,7 @@ class SearchRestrictionMixin(object):
         virt_libs = db.prefs.get('virtual_libraries', {})
         virt_libs[name] = search
         db.prefs.set('virtual_libraries', virt_libs)
+        db.data.invalidate_virtual_libraries_caches(db)
 
     def do_create_edit(self, name=None):
         db = self.library_view.model().db
@@ -341,8 +342,11 @@ class SearchRestrictionMixin(object):
             if name:
                 self._remove_vl(name, reapply=False)
             self.add_virtual_library(db, cd.library_name, cd.library_search)
+            db.data.invalidate_virtual_libraries_caches(db)
             if not name or name == db.data.get_base_restriction_name():
                 self.apply_virtual_library(cd.library_name)
+            else:
+                self.tags_view.recount()
 
     def virtual_library_clicked(self):
         m = self.virtual_library_menu
@@ -462,6 +466,9 @@ class SearchRestrictionMixin(object):
                         default_yes=False):
             return
         self._remove_vl(name, reapply=True)
+        db = self.library_view.model().db
+        db.data.invalidate_virtual_libraries_caches(db)
+        self.tags_view.recount()
 
     def _remove_vl(self, name, reapply=True):
         db = self.library_view.model().db

src/calibre/library/caches.py

@@ -144,7 +144,8 @@ def force_to_bool(val):
 
 class CacheRow(list):  # {{{
 
-    def __init__(self, db, composites, val, series_col, series_sort_col):
+    def __init__(self, db, composites, val, series_col, series_sort_col,
+                 virtual_library_col):
         self.db = db
         self._composites = composites
         list.__init__(self, val)
@@ -152,6 +153,8 @@ class CacheRow(list):  # {{{
         self._series_col = series_col
         self._series_sort_col = series_sort_col
         self._series_sort = None
+        self._virt_lib_col = virtual_library_col
+        self._virt_libs = None
 
     def __getitem__(self, col):
         if self._must_do:
@@ -179,6 +182,26 @@ class CacheRow(list):  # {{{
             else:
                 self._series_sort = ''
                 self[self._series_sort_col] = ''
+
+        if col == self._virt_lib_col and self._virt_libs is None:
+            try:
+                if not getattr(self.db.data, '_virt_libs_computed', False):
+                    self.db.data._ids_in_virt_libs = {}
+                    for v,s in self.db.prefs.get('virtual_libraries', {}).iteritems():
+                        self.db.data._ids_in_virt_libs[v] = self.db.data.search_raw(s)
+                    self.db.data._virt_libs_computed = True
+                r = []
+                for v in self.db.prefs.get('virtual_libraries', {}).keys():
+                    # optimize the lookup of the ID -- it is always zero
+                    if self[0] in self.db.data._ids_in_virt_libs[v]:
+                        r.append(v)
+                from calibre.utils.icu import sort_key
+                self._virt_libs = ", ".join(sorted(r, key=sort_key))
+                self[self._virt_lib_col] = self._virt_libs
+            except:
+                print len(self)
+                traceback.print_exc()
+
         return list.__getitem__(self, col)
 
     def __getslice__(self, i, j):
@@ -206,6 +229,7 @@ class ResultCache(SearchQueryParser):  # {{{
                 self.composites[field_metadata[key]['rec_index']] = key
         self.series_col = field_metadata['series']['rec_index']
         self.series_sort_col = field_metadata['series_sort']['rec_index']
+        self.virtual_libraries_col = field_metadata['virtual_libraries']['rec_index']
         self._data = []
         self._map = self._map_filtered = []
         self.first_sort = True
@@ -816,6 +840,13 @@ class ResultCache(SearchQueryParser):  # {{{
                 current_candidates -= matches
         return matches
 
+    def invalidate_virtual_libraries_caches(self, db):
+        self.refresh(db)
+
+    def search_raw(self, query):
+        matches = self.parse(query)
+        return matches
+
     def search(self, query, return_matches=False):
         ans = self.search_getting_ids(query, self.search_restriction,
                                       set_restriction_count=True)
@@ -973,10 +1004,11 @@ class ResultCache(SearchQueryParser):  # {{{
             try:
                 self._data[id] = CacheRow(db, self.composites,
                         db.conn.get('SELECT * from meta2 WHERE id=?', (id,))[0],
-                        self.series_col, self.series_sort_col)
+                        self.series_col, self.series_sort_col,
+                        self.virtual_libraries_col)
                 self._data[id].append(db.book_on_device_string(id))
-                self._data[id].append(self.marked_ids_dict.get(id, None))
-                self._data[id].append(None)
+                self._data[id].extend((self.marked_ids_dict.get(id, None), None, None))
+                self._virt_libs_computed = False
                 self._uuid_map[self._data[id][self._uuid_column_index]] = id
             except IndexError:
                 return None
@@ -993,10 +1025,11 @@ class ResultCache(SearchQueryParser):  # {{{
         for id in ids:
             self._data[id] = CacheRow(db, self.composites,
                         db.conn.get('SELECT * from meta2 WHERE id=?', (id,))[0],
-                        self.series_col, self.series_sort_col)
+                        self.series_col, self.series_sort_col,
+                        self.virtual_libraries_col)
             self._data[id].append(db.book_on_device_string(id))
-            self._data[id].append(self.marked_ids_dict.get(id, None))
-            self._data[id].append(None)  # Series sort column
+            self._data[id].extend((self.marked_ids_dict.get(id, None), None, None))
+            self._virt_libs_computed = False
             self._uuid_map[self._data[id][self._uuid_column_index]] = id
         self._map[0:0] = ids
         self._map_filtered[0:0] = ids
@@ -1023,15 +1056,17 @@ class ResultCache(SearchQueryParser):  # {{{
         self._data = list(itertools.repeat(None, temp[-1][0] + 2)) if temp else []
         for r in temp:
             self._data[r[0]] = CacheRow(db, self.composites, r,
-                                        self.series_col, self.series_sort_col)
+                                        self.series_col, self.series_sort_col,
+                                        self.virtual_libraries_col)
             self._uuid_map[self._data[r[0]][self._uuid_column_index]] = r[0]
 
         for item in self._data:
             if item is not None:
                 item.append(db.book_on_device_string(item[0]))
-                # Temp mark and series_sort columns
-                item.extend((None, None))
+                # Temp mark, series_sort, virtual_library columns
+                item.extend((None, None, None))
 
+        self._virt_libs_computed = False
         marked_col = self.FIELD_MAP['marked']
         for id_, val in self.marked_ids_dict.iteritems():
             try:

src/calibre/library/cli.py

@@ -575,7 +575,7 @@ def command_set_metadata(args, dbpath):
         for key in sorted(db.field_metadata.all_field_keys()):
             m = db.field_metadata[key]
             if (key not in {'formats', 'series_sort', 'ondevice', 'path',
-                'last_modified'} and m['is_editable'] and m['name']):
+                'virtual_libraries', 'last_modified'} and m['is_editable'] and m['name']):
                 yield key, m
                 if m['datatype'] == 'series':
                     si = m.copy()

src/calibre/library/database2.py

@@ -449,6 +449,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         self.field_metadata.set_field_record_index('marked', base, prefer_custom=False)
         self.FIELD_MAP['series_sort'] = base = base+1
         self.field_metadata.set_field_record_index('series_sort', base, prefer_custom=False)
+        self.FIELD_MAP['virtual_libraries'] = base = base+1
+        self.field_metadata.set_field_record_index('virtual_libraries', base, prefer_custom=False)
 
         script = '''
         DROP VIEW IF EXISTS meta2;
@@ -992,6 +994,10 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         mi.book_size   = row[fm['size']]
         mi.ondevice_col= row[fm['ondevice']]
         mi.last_modified = row[fm['last_modified']]
+
+        mi._base_db_row = row # So the formatter functions can see the underlying data
+        mi._virt_lib_column = fm['virtual_libraries']
+
         formats = row[fm['formats']]
         mi.format_metadata = {}
         if not formats:

src/calibre/library/field_metadata.py

@@ -387,6 +387,16 @@ class FieldMetadata(dict):
                            'is_custom':False,
                            'is_category':False,
                            'is_csp': False}),
+            ('virtual_libraries',  {'table':None,
+                           'column':None,
+                           'datatype':'text',
+                           'is_multiple':{},
+                           'kind':'field',
+                           'name':_('Virtual Libraries'),
+                           'search_terms':['virtual_libraries'],
+                           'is_custom':False,
+                           'is_category':False,
+                           'is_csp': False}),
         ]
     # }}}
 

src/calibre/utils/formatter_functions.py

@@ -1209,9 +1209,19 @@ class BuiltinFinishFormatting(BuiltinFormatterFunction):
             return val
         return prefix + formatter._do_format(val, fmt) + suffix
 
+class BuiltinBookInVirtualLibraries(BuiltinFormatterFunction):
+    name = 'book_in_virtual_libraries'
+    arg_count = 0
+    category = 'Get values from metadata'
+    __doc__ = doc = _('book_in_virtual_libraries() -- returns a list of '
+                      'virtual libraries that this book is in.')
+
+    def evaluate(self, formatter, kwargs, mi, locals_):
+        return mi._base_db_row[mi._virt_lib_column ]
+
 _formatter_builtins = [
     BuiltinAdd(), BuiltinAnd(), BuiltinApproximateFormats(),
-    BuiltinAssign(), BuiltinBooksize(),
+    BuiltinAssign(), BuiltinBookInVirtualLibraries(), BuiltinBooksize(),
     BuiltinCapitalize(), BuiltinCmp(), BuiltinContains(), BuiltinCount(),
     BuiltinCurrentLibraryName(), BuiltinCurrentLibraryPath(),
     BuiltinDaysBetween(), BuiltinDivide(), BuiltinEval(), BuiltinFirstNonEmpty(),

src/calibre/utils/search_query_parser.py

@@ -294,6 +294,7 @@ class SearchQueryParser(object):
 
     def __init__(self, locations, test=False, optimize=False):
         self.sqp_initialize(locations, test=test, optimize=optimize)
+        self.sqp_parsed_search_cache = {}
         self.parser = Parser()
 
     def sqp_change_locations(self, locations):
@@ -308,8 +309,7 @@ class SearchQueryParser(object):
         # empty the list of searches used for recursion testing
         self.recurse_level = 0
         self.searches_seen = set([])
-        candidates = self.universal_set()
-        return self._parse(query, candidates)
+        return self._parse(query)
 
     # this parse is used internally because it doesn't clear the
     # recursive search test list. However, we permit seeing the
@@ -317,8 +317,11 @@ class SearchQueryParser(object):
     # another search.
     def _parse(self, query, candidates=None):
         self.recurse_level += 1
+        res = self.sqp_parsed_search_cache.get(query, None)
+        if res is None:
             try:
                 res = self.parser.parse(query, self.locations)
+                self.sqp_parsed_search_cache[query] = res
             except RuntimeError:
                 raise ParseException(_('Failed to parse query, recursion limit reached: %s')%repr(query))
         if candidates is None: