provide the update_seq in all_docs view even when it is zero

git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@983336 13f79535-47bb-0310-9956-ffa450edef68

4 files changed, 17 insertions, 5 deletions

diff --git a/THANKS b/THANKS
index 926db0e7..6aef37e0 100644
--- a/THANKS
+++ b/THANKS
@@ -67,5 +67,6 @@ suggesting improvements or submitting changes. Some of these people are:
  * Jonathan D. Knezek <jdknezek@gmail.com>
  * David Rose <doppler@gmail.com>
  * Lim Yue Chuan <shasderias@gmail.com>
+ * David Davis <xantus@xantus.org>
 
 For a list of authors see the `AUTHORS` file.
diff --git a/share/www/script/test/view_update_seq.js b/share/www/script/test/view_update_seq.js
index d46cb3c6..9b07a777 100644
--- a/share/www/script/test/view_update_seq.js
+++ b/share/www/script/test/view_update_seq.js
@@ -18,6 +18,11 @@ couchTests.view_update_seq = function(debug) {
 
   T(db.info().update_seq == 0);
 
+  resp = db.allDocs({update_seq:true});
+
+  T(resp.rows.length == 0);
+  T(resp.update_seq == 0);
+
   var designDoc = {
     _id:"_design/test",
     language: "javascript",
@@ -35,7 +40,7 @@ couchTests.view_update_seq = function(debug) {
 
   T(db.info().update_seq == 1);
 
-  var resp = db.allDocs({update_seq:true});
+  resp = db.allDocs({update_seq:true});
 
   T(resp.rows.length == 1);
   T(resp.update_seq == 1);
diff --git a/src/couchdb/couch_httpd_db.erl b/src/couchdb/couch_httpd_db.erl
index 79ca2339..54b01600 100644
--- a/src/couchdb/couch_httpd_db.erl
+++ b/src/couchdb/couch_httpd_db.erl
@@ -486,7 +486,13 @@ all_docs_view(Req, Db, Keys) ->
         true -> EndDocId
         end,
         FoldAccInit = {Limit, SkipCount, undefined, []},
-		UpdateSeq = couch_db:get_update_seq(Db),
+        UpdateSeq = couch_db:get_update_seq(Db),
+        JsonParams = case couch_httpd:qs_value(Req, "update_seq") of
+        "true" ->
+            [{update_seq, UpdateSeq}];
+        _Else ->
+            []
+        end,
         case Keys of
         nil ->
             FoldlFun = couch_httpd_view:make_view_fold_fun(Req, QueryArgs, CurrentEtag, Db, UpdateSeq,
@@ -504,7 +510,7 @@ all_docs_view(Req, Db, Keys) ->
             {ok, LastOffset, FoldResult} = couch_db:enum_docs(Db,
                 AdapterFun, FoldAccInit, [{start_key, StartId}, {dir, Dir},
                     {if Inclusive -> end_key; true -> end_key_gt end, EndId}]),
-            couch_httpd_view:finish_view_fold(Req, TotalRowCount, LastOffset, FoldResult);
+            couch_httpd_view:finish_view_fold(Req, TotalRowCount, LastOffset, FoldResult, JsonParams);
         _ ->
             FoldlFun = couch_httpd_view:make_view_fold_fun(Req, QueryArgs, CurrentEtag, Db, UpdateSeq,
                 TotalRowCount, #view_fold_helper_funs{
@@ -533,7 +539,7 @@ all_docs_view(Req, Db, Keys) ->
                     {_, FoldAcc2} = FoldlFun(Doc, 0, FoldAcc),
                     FoldAcc2
                 end, FoldAccInit, Keys),
-            couch_httpd_view:finish_view_fold(Req, TotalRowCount, 0, FoldResult)
+            couch_httpd_view:finish_view_fold(Req, TotalRowCount, 0, FoldResult, JsonParams)
         end
     end).
 
diff --git a/src/couchdb/couch_httpd_view.erl b/src/couchdb/couch_httpd_view.erl
index 62d0ee5b..16b2791f 100644
--- a/src/couchdb/couch_httpd_view.erl
+++ b/src/couchdb/couch_httpd_view.erl
@@ -16,7 +16,7 @@
 -export([handle_view_req/3,handle_temp_view_req/2]).
 
 -export([parse_view_params/3]).
--export([make_view_fold_fun/7, finish_view_fold/4, view_row_obj/3]).
+-export([make_view_fold_fun/7, finish_view_fold/4, finish_view_fold/5, view_row_obj/3]).
 -export([view_group_etag/2, view_group_etag/3, make_reduce_fold_funs/6]).
 -export([design_doc_view/5, parse_bool_param/1, doc_member/2]).
 -export([make_key_options/1, load_view/4]).