Wraps changeset creation inside a single transation.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3469 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/abstract_adapter.rb

@@ -286,8 +286,8 @@ module Redmine
         end
 
         def save(repo)
-          if repo.changesets.find_by_scmid(scmid.to_s).nil?
-            changeset = Changeset.create!(
+          Changeset.transaction do
+            changeset = Changeset.new(
               :repository => repo,
               :revision => identifier,
               :scmid => scmid,
@@ -295,11 +295,13 @@ module Redmine
               :committed_on => time,
               :comments => message)
             
-            paths.each do |file|
-              Change.create!(
-                :changeset => changeset,
-                :action => file[:action],
-                :path => file[:path])
+            if changeset.save
+              paths.each do |file|
+                Change.create(
+                  :changeset => changeset,
+                  :action => file[:action],
+                  :path => file[:path])
+              end
             end
           end
         end