Remove unneeded parts

src/jio.storage/indexstorage2.js

@@ -41,72 +41,9 @@
     this._version = description.version || undefined;
   }
 
-  function convertToObject(list, key) {
-    var i, obj = {};
-    for (i = 0; i < list.length; i += 1) {
-      obj[list[i][key]] = list[i];
-    }
-    return obj;
-  }
-
-  function keyCount(obj) {
-    return Object.keys(obj).length;
-  }
-
-  function union(list) {
-    var result, i, j;
-    if (list.length === 0) {
-      return [];
-    }
-    result = convertToObject(list[0], 'id');
-    for (i = 1; i < list.length; i += 1) {
-      for (j = 0; j < list[i].length; j += 1) {
-        if (result[list[i][j].id]) {
-          if (keyCount(result[list[i][j].id].doc) <
-              keyCount(list[i][j].doc)) {
-            result[list[i][j].id] = list[i][j];
-          }
-        } else {
-          result[list[i][j].id] = list[i][j];
-        }
-      }
-    }
-    return Object.values(result);
-  }
-
-  function intersect(list) {
-    var result, temp = {}, i, j;
-    if (list.length === 0) {
-      return [];
-    }
-    result = convertToObject(list[0], 'id');
-    for (i = 1; i < list.length; i += 1) {
-      for (j = 0; j < list[i].length; j += 1) {
-        if (result[list[i][j].id]) {
-          if (keyCount(result[list[i][j].id].doc) <
-              keyCount(list[i][j].doc)) {
-            temp[list[i][j].id] = list[i][j];
-          } else {
-            temp[list[i][j].id] = result[list[i][j].id];
-          }
-        }
-      }
-      result = temp;
-      temp = {};
-    }
-    return Object.values(result);
-  }
-
   IndexStorage2.prototype.hasCapacity = function (name) {
-    var this_storage_capacity_list = ["select",
-                                      "list",
-                                      "query",
-                                      "sort",
-                                      "include"];
-
-    if (this_storage_capacity_list.indexOf(name) !== -1) {
-      return true;
-    }
+    return (name === 'query') || (name === 'limit') || (name === 'list') ||
+      this._sub_storage.hasCapacity(name);
   };
 
   function handleUpgradeNeeded(evt, index_keys) {
@@ -117,19 +54,20 @@
         keyPath: "id",
         autoIncrement: false
       });
+      current_indices = new Set();
     } else {
       store = evt.target.transaction.objectStore('index-store');
-    }
-    current_indices = new Set(store.indexNames);
-    for (i = 0; i < index_keys.length; i += 1) {
-      if (!(current_indices.has(index_keys[i]))) {
-        db.deleteObjectStore("index-store");
-        store = db.createObjectStore("index-store", {
-          keyPath: "id",
-          autoIncrement: false
-        });
-        current_indices = new Set();
-        break;
+      current_indices = new Set(store.indexNames);
+      for (i = 0; i < index_keys.length; i += 1) {
+        if (!(current_indices.has(index_keys[i]))) {
+          db.deleteObjectStore("index-store");
+          store = db.createObjectStore("index-store", {
+            keyPath: "id",
+            autoIncrement: false
+          });
+          current_indices = new Set();
+          break;
+        }
       }
     }
     for (i = 0; i < index_keys.length; i += 1) {
@@ -173,11 +111,10 @@
         reject("Connection to: " + db_name + " timeout");
       };
 
-    //  request.onblocked = function (evt) {
-    //    console.log("evt", evt);
-    //    request.result.close();
-    //    reject("Connection to: " + db_name + " was blocked");
-    //  };
+      request.onblocked = function () {
+        request.result.close();
+        reject("Connection to: " + db_name + " was blocked");
+      };
 
       // Create DB if necessary //
       request.onupgradeneeded = function (evt) {
@@ -264,33 +201,7 @@
     return doc;
   }
 
-  IndexStorage2.prototype.forceIncludeDocs = function (result) {
-    var i, get_list = {}, context = this;
-    return RSVP.Queue()
-      .push(function () {
-        for (i = 0; i < result.length; i += 1) {
-          if (!(result[i].include)) {
-            get_list[result[i].id] = context._sub_storage.get(result[i].id);
-          }
-        }
-        return RSVP.hash(get_list);
-      })
-      .push(function (get_result) {
-        var keys;
-        result = convertToObject(result, 'id');
-        keys = Object.keys(get_result);
-        for (i = 0; i < keys.length; i += 1) {
-          result[keys[i]].doc = get_result[keys[i]];
-        }
-        result = Object.values(result);
-        return result;
-      })
-      .push(function () {
-        return result;
-      });
-  };
-
-  IndexStorage2.prototype._runQuery = function (index, value) {
+  IndexStorage2.prototype._runQuery = function (key, value, limit) {
     var context = this;
     return new RSVP.Queue()
       .push(function () {
@@ -299,7 +210,7 @@
             return waitForTransaction(db, ["index-store"], "readonly",
               function (tx) {
                 return waitForIDBRequest(tx.objectStore("index-store")
-                  .index("Index-" + index).getAll(value))
+                  .index("Index-" + key).getAll(value, limit))
                   .then(function (evt) {
                     return evt.target.result;
                   });
@@ -308,70 +219,28 @@
       });
   };
 
-  IndexStorage2.prototype._processQueryObject = function (object,
-    include_docs) {
-    var promise_list = [], context = this, i;
-    include_docs = include_docs || false;
-    return RSVP.Queue()
-      .push(function () {
-        if (object.type === "simple") {
-          if ((context._index_keys.indexOf(object.key) === -1)) {
-            return context._sub_storage.allDocs({
-              "query": object.key + ":" + object.value,
-              "include_docs": include_docs
-            })
-              .push(function (result) {
-                if (include_docs) {
-                  result.data.rows.map(function (v) {
-                    v.include = true;
-                  });
-                }
-                return result.data.rows;
+  IndexStorage2.prototype.buildQuery = function (options) {
+    var context = this, query;
+    if (options.query) {
+      query = parseStringToObject(options.query);
+      if (query.type === 'simple') {
+        if (context._index_keys.indexOf(query.key) !== -1) {
+          return context._runQuery(query.key, query.value, options.limit)
+            .push(function (result) {
+              return result.map(function (value) {
+                return {
+                  id: value.id,
+                  value: {}
+                };
               });
-          }
-          return context._runQuery(object.key, object.value);
-        }
-        if (object.type === "complex") {
-          for (i = 0; i < object.query_list.length; i += 1) {
-            promise_list.push(context
-              ._processQueryObject(object.query_list[i], include_docs));
-          }
-          return RSVP.all(promise_list)
-            .then(function (result) {
-              if (object.operator === "OR") {
-                return union(result);
-              }
-              if (object.operator === "AND") {
-                return intersect(result);
-              }
             });
         }
-      })
-  };
-
-  IndexStorage2.prototype.buildQuery = function (options) {
-    var context = this;
-    if (options.query) {
-      return this._processQueryObject(parseStringToObject(options.query),
-        options.include_docs)
-        .push(function (result) {
-          if (options.include_docs) {
-            result = context.forceIncludeDocs(result);
-            options.select_list = undefined;
-          } else {
-            options.select_list = options.select_list || [];
-          }
-          return result;
-        })
-        .push(function (result) {
-          return result.map(function (value) {
-            return {
-              "id": value.id,
-              "value": filterDocValues(value.doc, options.select_list)
-            };
-          });
-        });
+      }
     }
+    return context._sub_storage.allDocs(options)
+      .push(function (result) {
+        return result.data.rows;
+      });
   };
 
   IndexStorage2.prototype.get = function () {