books_with_same_title()

src/calibre/db/legacy.py

@@ -10,6 +10,7 @@ import os, traceback, types
 from functools import partial
 from future_builtins import zip
 
+from calibre import force_unicode
 from calibre.db import _get_next_series_num_for_list, _get_series_values
 from calibre.db.adding import (
     find_books_in_directory, import_book_directory_multiple,
@@ -112,6 +113,8 @@ class LibraryDatabase(object):
         # Cleaning is not required anymore
         self.clean = self.clean_custom = MT(lambda self:None)
         self.clean_standard_field = MT(lambda self, field, commit=False:None)
+        # apsw operates in autocommit mode
+        self.commit = MT(lambda self:None)
 
     def close(self):
         self.backend.close()
@@ -368,8 +371,19 @@ class LibraryDatabase(object):
             return []
         return self.books_in_series(series_ids[0])
 
-    # Private interface {{{
+    def books_with_same_title(self, mi, all_matches=True):
+        title = mi.title
+        ans = set()
+        if title:
+            title = icu_lower(force_unicode(title))
+            for book_id, x in self.new_api.get_id_map('title').iteritems():
+                if icu_lower(x) == title:
+                    ans.add(book_id)
+                    if not all_matches:
+                        break
+        return ans
 
+    # Private interface {{{
     def __iter__(self):
         for row in self.data.iterall():
             yield row

src/calibre/db/tests/legacy.py

@@ -177,6 +177,7 @@ class LegacyTest(BaseTest):
             'authors_with_sort_strings':[(0,), (1,), (2,)],
             'book_on_device_string':[(1,), (2,), (3,)],
             'books_in_series_of':[(0,), (1,), (2,)],
+            'books_with_same_title':[(Metadata(db.title(0)),), (Metadata(db.title(1)),), (Metadata('1234'),)],
         }.iteritems():
             for a in args:
                 fmt = lambda x: x
@@ -266,8 +267,9 @@ class LegacyTest(BaseTest):
             'author_id',  # replaced by get_author_id
             'books_for_author',  # broken
             'books_in_old_database',  # unused
-            'clean_user_categories',  # internal API
-            'cleanup_tags',  # internal API
+
+            # Internal API
+            'clean_user_categories',  'cleanup_tags',  'books_list_filter',
         }
         SKIP_ARGSPEC = {
             '__init__', 'get_next_series_num_for', 'has_book', 'author_sort_from_authors',