# HG changeset patch
# User Mads Kiilerich <madski@unity3d.com>
# Date 2013-04-04 22:40:58
# Node ID f73a63831d3f16078c5e4077a8d6be2a953e27a6
# Parent  a327492d84df7a2c402b59e83e9056e9f8152475

pullrequests: optimize locating changeset to compare

We only need the max revision - that is much faster when a branch is specified.

diff --git a/rhodecode/model/pull_request.py b/rhodecode/model/pull_request.py
--- a/rhodecode/model/pull_request.py
+++ b/rhodecode/model/pull_request.py
@@ -183,13 +183,13 @@ class PullRequestModel(BaseModel):
                     'rev': 'id',
                 }
 
-            org_rev_spec = "%s('%s')" % (_revset_predicates[org_ref[0]],
-                                         safe_str(org_ref[1]))
+            org_rev_spec = "max(%s('%s'))" % (_revset_predicates[org_ref[0]],
+                                              safe_str(org_ref[1]))
             org_revs = scmutil.revrange(org_repo._repo, [org_rev_spec])
             org_rev = org_repo._repo[org_revs[-1] if org_revs else -1].hex()
 
-            other_rev_spec = "%s('%s')" % (_revset_predicates[other_ref[0]],
-                                           safe_str(other_ref[1]))
+            other_rev_spec = "max(%s('%s'))" % (_revset_predicates[other_ref[0]],
+                                                safe_str(other_ref[1]))
             other_revs = scmutil.revrange(other_repo._repo, [other_rev_spec])
             other_rev = other_repo._repo[other_revs[-1] if other_revs else -1].hex()