Updated bryanstorage to retain all versions of documents and only retrieve the...

Updated bryanstorage to retain all versions of documents and only retrieve the most recent copy when get(id) is called.

src/jio.storage/bryanstorage.js

@@ -13,37 +13,76 @@
     this._sub_storage = jIO.createJIO(spec.sub_storage);
   }
 
-  BryanStorage.prototype.get = function () {
-    return this._sub_storage.get.apply(this._sub_storage, arguments);
+  BryanStorage.prototype.get = function (id_in) {
+    var options = {
+      //query: 'id: "' + id_in + '"',
+      //sort_on: [['_revision', 'descending']],
+      //id: "tmp",
+      include_docs: true
+    };
+    return this._sub_storage.allDocs(options)
+
+      // Return document with most recent revision
+      .push(function (results) {
+        //<0 => a < b
+        var sorted_results = results.data.rows.sort(function (a, b) {
+          if (b.doc.id !== id_in || !b) {return -1; }
+          if (a.doc.id !== id_in || !a) {return 1; }
+          return b.doc._revision - a.doc._revision;
+        });
+        if (sorted_results.length > 0 && sorted_results[0].doc.id === id_in) {
+          return sorted_results[0].doc;
+        }
+        return [];
+      });
   };
 
-  BryanStorage.prototype.allAttachments = function () {
-    return this._sub_storage.allAttachments.apply(this._sub_storage, arguments);
-  };
 
   // Not implemented for IndexedDB
-  BryanStorage.prototype.post = function () {
-    return this._sub_storage.post.apply(this._sub_storage, arguments);
+  BryanStorage.prototype.post = function (metadata) {
+
+    function S4() {
+      return ('0000' + Math.floor(
+        Math.random() * 0x10000 // 65536
+      ).toString(16)).slice(-4);
+    }
+    var id = S4() + S4() + "-" +
+        S4() + "-" +
+        S4() + "-" +
+        S4() + "-" +
+        S4() + S4() + S4();
+
+    return this._sub_storage.put(id, metadata);
   };
 
   BryanStorage.prototype.put = function (id, new_metadata) {
-    var substorage = this._sub_storage;
-
-    return this.get(id)
+    var storage = this;
+    new_metadata.id = id;
+    return storage.get(id)
       .push(
         function (metadata) {
+
           // Increments existing "_revision" attribute
-          new_metadata._revision = metadata._revision + 1;
-          return substorage.put(id, new_metadata);
+          if (metadata.hasOwnProperty('_revision')) {
+            new_metadata._revision = metadata._revision + 1;
+          } else {
+            new_metadata._revision = 0;
+          }
+          //return storage.post.apply(substorage, new_metadata);
+          return storage.post(new_metadata);
         },
         function () {
           // Creates new attribute "_revision" = 0
           new_metadata._revision = 0;
-          return substorage.put(id, new_metadata);
+          return storage.post(new_metadata);
         }
       );
   };
 
+  BryanStorage.prototype.allAttachments = function () {
+    return this._sub_storage.allAttachments.apply(this._sub_storage, arguments);
+  };
+
   BryanStorage.prototype.remove = function () {
     return this._sub_storage.remove.apply(this._sub_storage, arguments);
   };
@@ -103,8 +142,8 @@
   BryanStorage.prototype.hasCapacity = function (name) {
     return this._sub_storage.removeAttachment.apply(this._sub_storage, name);
   };
-  BryanStorage.prototype.buildQuery = function (options) {
-    return this._sub_storage.removeAttachment.apply(this._sub_storage, options);
+  BryanStorage.prototype.buildQuery = function () {
+    return this._sub_storage.buildQuery.apply(this._sub_storage, arguments);
   };
 
   jIO.addStorage('bryan', BryanStorage);