From cdf50da0342729728efc99d90eb519c5400c7387 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 15 Jul 2013 21:16:07 +0530
Subject: [PATCH] get_id_from_uuid()

---
 src/calibre/db/cache.py        | 5 +++++
 src/calibre/db/legacy.py       | 4 ++++
 src/calibre/db/tables.py       | 3 +++
 src/calibre/db/tests/legacy.py | 1 +
 4 files changed, 13 insertions(+)

diff --git a/src/calibre/db/cache.py b/src/calibre/db/cache.py
index 330e8dfba5..ea62f3b90a 100644
--- a/src/calibre/db/cache.py
+++ b/src/calibre/db/cache.py
@@ -1353,6 +1353,11 @@ class Cache(object):
         self._mark_as_dirty(changed_books)
         return changed_books
 
+    @read_api
+    def lookup_by_uuid(self, uuid):
+        return self.fields['uuid'].table.lookup_by_uuid(uuid)
+
+
     # }}}
 
 class SortKey(object):  # {{{
diff --git a/src/calibre/db/legacy.py b/src/calibre/db/legacy.py
index ec480c3d2d..1faf9a2d1a 100644
--- a/src/calibre/db/legacy.py
+++ b/src/calibre/db/legacy.py
@@ -153,6 +153,10 @@ class LibraryDatabase(object):
     def refresh(self, field=None, ascending=True):
         self.data.refresh(field=field, ascending=ascending)
 
+    def get_id_from_uuid(self, uuid):
+        if uuid:
+            return self.new_api.lookup_by_uuid(uuid)
+
     def add_listener(self, listener):
         '''
         Add a listener. Will be called on change events with two arguments.
diff --git a/src/calibre/db/tables.py b/src/calibre/db/tables.py
index 81c66a0ca5..e76423d971 100644
--- a/src/calibre/db/tables.py
+++ b/src/calibre/db/tables.py
@@ -137,6 +137,9 @@ class UUIDTable(OneToOneTable):
                 clean.add(val)
         return clean
 
+    def lookup_by_uuid(self, uuid):
+        return self.uuid_to_id_map.get(uuid, None)
+
 class CompositeTable(OneToOneTable):
 
     def read(self, db):
diff --git a/src/calibre/db/tests/legacy.py b/src/calibre/db/tests/legacy.py
index 5f1aa2ff41..725f6c3ad9 100644
--- a/src/calibre/db/tests/legacy.py
+++ b/src/calibre/db/tests/legacy.py
@@ -163,6 +163,7 @@ class LegacyTest(BaseTest):
 
         for meth, args in {
             'get_next_series_num_for': [('A Series One',)],
+            'get_id_from_uuid':[('ddddd',), (db.uuid(1, True),)],
             'get_author_id': [('author one',), ('unknown',), ('xxxxx',)],
             'series_id': [(0,), (1,), (2,)],
             'publisher_id': [(0,), (1,), (2,)],