First cut at _changes api. Update the by_id and by_seq indexes to contain update seq numbers and pointers to bodies on disk, for use in the _changes api. This is a new file version, but the code can continue to serve the old 0.9 version without problems, though certain features in the _changes api will not be able to work. Upgrade to new file version (from 1 to 2) by compacting the file. Also fixed bugs with how the stats api tracks open databases.

git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@772406 13f79535-47bb-0310-9956-ffa450edef68

4 files changed, 48 insertions, 6 deletions

diff --git a/share/www/script/couch.js b/share/www/script/couch.js
index 4586cca8..8f3d96ad 100644
--- a/share/www/script/couch.js
+++ b/share/www/script/couch.js
@@ -319,16 +319,19 @@ CouchDB.replicate = function(source, target, rep_options) {
   return JSON.parse(CouchDB.last_req.responseText);
 }
 
-CouchDB.request = function(method, uri, options) {
-  options = options || {};
-  var req = null;
+CouchDB.newXhr = function() {
   if (typeof(XMLHttpRequest) != "undefined") {
-    req = new XMLHttpRequest();
+    return new XMLHttpRequest();
   } else if (typeof(ActiveXObject) != "undefined") {
-    req = new ActiveXObject("Microsoft.XMLHTTP");
+    return new ActiveXObject("Microsoft.XMLHTTP");
   } else {
     throw new Error("No XMLHTTPRequest support detected");
   }
+}
+
+CouchDB.request = function(method, uri, options) {
+  options = options || {};
+  var req = CouchDB.newXhr();
   req.open(method, uri, false);
   if (options.headers) {
     var headers = options.headers;
diff --git a/share/www/script/couch_tests.js b/share/www/script/couch_tests.js
index 6e4699e4..62e877d8 100644
--- a/share/www/script/couch_tests.js
+++ b/share/www/script/couch_tests.js
@@ -60,6 +60,7 @@ loadTest("view_offsets.js");
 loadTest("view_pagination.js");
 loadTest("view_sandboxing.js");
 loadTest("view_xml.js");
+loadTest("changes.js");
 loadTest("replication.js");
 loadTest("etags_head.js");
 loadTest("etags_views.js");
diff --git a/share/www/script/test/changes.js b/share/www/script/test/changes.js
new file mode 100644
index 00000000..fef2bcca
--- /dev/null
+++ b/share/www/script/test/changes.js
@@ -0,0 +1,38 @@
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License.  You may obtain a copy
+// of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+couchTests.changes = function(debug) {
+  var db = new CouchDB("test_suite_db");
+  db.deleteDb();
+  db.createDb();
+  if (debug) debugger;
+  
+  
+  var req = CouchDB.newXhr();
+  
+  req.open("GET", "/test_suite_db/_changes", false);
+  req.send("");
+  var resp = JSON.parse(req.responseText);
+  
+  T(resp.results.length == 0 && resp.last_seq==0)
+  
+  var doc = {_id:"foo", bar:1};
+  db.save(doc);
+  
+  req.open("GET", "/test_suite_db/_changes", false);
+  req.send("");
+  var resp = JSON.parse(req.responseText);
+  
+  T(resp.results.length == 1 && resp.last_seq==1)
+  T(resp.results[0].changes[0].rev == doc._rev)
+  
+};
diff --git a/share/www/script/test/replication.js b/share/www/script/test/replication.js
index d76d2fd8..405b0b1d 100644
--- a/share/www/script/test/replication.js
+++ b/share/www/script/test/replication.js
@@ -189,7 +189,7 @@ couchTests.replication = function(debug) {
           dbB.save({_id:"foo",value:"b"});
         };
         
-        this.afterBA1 = function(dbA, dbB) {            
+        this.afterBA1 = function(dbA, dbB) {
           var docA = dbA.open("foo", {conflicts: true});
           var docB = dbB.open("foo", {conflicts: true});