opendash/dist/services/DataService.js

open.DASH data visualization framework

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    };
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        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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import { BaseService, DataAdapterContext, equals, } from "..";
var DataService = /** @class */ (function (_super) {
    __extends(DataService, _super);
    function DataService(app, adapter) {
        var _this = _super.call(this) || this;
        _this.itemStore = new Map();
        _this.itemSubscriptions = new Map();
        _this.itemListSubscriptions = new Set();
        _this.valueStore = new Map();
        _this.valueSubscriptions = new Map();
        _this.app = app;
        _this.services = app.services;
        _this.adapter = adapter;
        _this.context = new DataAdapterContext(_this, _this.app);
        _this.initAdapter(adapter, _this.context, _this.services);
        return _this;
    }
    DataService.prototype.notifyDataSubscribers = function (subscribers, clear) {
        if (clear === void 0) { clear = false; }
        subscribers.forEach(function (callback) {
            try {
                callback();
            }
            catch (error) {
                console.error("Error in subscription:", error);
            }
        });
        if (clear) {
            subscribers.clear();
        }
    };
    DataService.prototype.subscribeItemList = function (callback) {
        var _this = this;
        this.itemListSubscriptions.add(callback);
        return function () {
            _this.itemListSubscriptions.delete(callback);
        };
    };
    DataService.prototype.subscribeItem = function (item, callback) {
        var _this = this;
        var key = keyForItem(item);
        if (!this.itemSubscriptions.has(key)) {
            this.itemSubscriptions.set(key, new Set());
        }
        this.itemSubscriptions.get(key).add(callback);
        return function () {
            _this.itemSubscriptions.get(key).delete(callback);
        };
    };
    DataService.prototype.subscribeValue = function (item, callback) {
        var _this = this;
        var key = keyForItem(item);
        if (!this.valueSubscriptions.has(key)) {
            this.valueSubscriptions.set(key, new Set());
        }
        this.valueSubscriptions.get(key).add(callback);
        return function () {
            _this.valueSubscriptions.get(key).delete(callback);
        };
    };
    DataService.prototype.get = function (source, id) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this._getOrThrowSync(source, id)];
            });
        });
    };
    DataService.prototype._getOrThrowSync = function (source, id) {
        var item = this.itemStore.get(keyForIdentifier([source, id]));
        if (!item) {
            throw new Error("Item with id \"" + id + "\" not found");
        }
        return item;
    };
    DataService.prototype.getValue = function (item) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this._getValueOrThrowSync(item)];
            });
        });
    };
    DataService.prototype._getValueOrThrowSync = function (item) {
        return this.valueStore.get(keyForItem(item));
    };
    DataService.prototype.list = function () {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this._listOrThrowSync()];
            });
        });
    };
    DataService.prototype._listOrThrowSync = function () {
        return Array.from(this.itemStore.values());
    };
    DataService.prototype.setItem = function (item) {
        return __awaiter(this, void 0, void 0, function () {
            var key;
            return __generator(this, function (_a) {
                key = keyForItem(item);
                if (!this.itemSubscriptions.has(key)) {
                    this.itemSubscriptions.set(key, new Set());
                }
                if (!this.itemStore.has(key) || equals(this.itemStore.get(key), item)) {
                    this.itemStore.set(key, item);
                    this.notifyDataSubscribers(this.itemListSubscriptions);
                    this.notifyDataSubscribers(this.itemSubscriptions.get(key));
                }
                return [2 /*return*/];
            });
        });
    };
    DataService.prototype.setItems = function (items) {
        return __awaiter(this, void 0, void 0, function () {
            var _i, items_1, item, key;
            return __generator(this, function (_a) {
                for (_i = 0, items_1 = items; _i < items_1.length; _i++) {
                    item = items_1[_i];
                    key = keyForItem(item);
                    if (!this.itemSubscriptions.has(key)) {
                        this.itemSubscriptions.set(key, new Set());
                    }
                    if (!this.itemStore.has(key) || !equals(this.itemStore.get(key), item)) {
                        this.itemStore.set(key, item);
                        this.notifyDataSubscribers(this.itemSubscriptions.get(key));
                    }
                }
                this.notifyDataSubscribers(this.itemListSubscriptions);
                return [2 /*return*/];
            });
        });
    };
    DataService.prototype.setValue = function (item, value) {
        return __awaiter(this, void 0, void 0, function () {
            var key;
            return __generator(this, function (_a) {
                key = keyForItem(item);
                if (!this.valueSubscriptions.has(key)) {
                    this.valueSubscriptions.set(key, new Set());
                }
                if (!this.valueStore.has(key) || !equals(this.valueStore.get(key), value)) {
                    this.valueStore.set(key, value);
                    this.notifyDataSubscribers(this.valueSubscriptions.get(key));
                }
                return [2 /*return*/];
            });
        });
    };
    DataService.prototype.removeItem = function (item) {
        return __awaiter(this, void 0, void 0, function () {
            var key;
            return __generator(this, function (_a) {
                key = keyForItem(item);
                this.itemStore.delete(key);
                this.valueStore.delete(key);
                this.notifyDataSubscribers(this.itemListSubscriptions);
                this.notifyDataSubscribers(this.itemSubscriptions.get(key));
                this.notifyDataSubscribers(this.valueSubscriptions.get(key));
                return [2 /*return*/];
            });
        });
    };
    DataService.prototype.clear = function () {
        return __awaiter(this, void 0, void 0, function () {
            var _this = this;
            return __generator(this, function (_a) {
                this.setLoading(true);
                // clear stores
                this.itemStore.clear();
                this.valueStore.clear();
                this.notifyDataSubscribers(this.itemListSubscriptions);
                Array.from(this.itemSubscriptions.keys()).forEach(function (key) {
                    _this.notifyDataSubscribers(_this.itemSubscriptions.get(key));
                });
                Array.from(this.valueSubscriptions.keys()).forEach(function (key) {
                    _this.notifyDataSubscribers(_this.valueSubscriptions.get(key));
                });
                return [2 /*return*/];
            });
        });
    };
    DataService.prototype.fetchValues = function (item, options) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.wait()];
                    case 1:
                        _a.sent();
                        return [4 /*yield*/, this.adapter.fetchValues(item, options)];
                    case 2: return [2 /*return*/, _a.sent()];
                }
            });
        });
    };
    DataService.prototype.fetchValuesMultiItem = function (items, options) {
        return __awaiter(this, void 0, void 0, function () {
            var historyRequests, histories, resultEntries;
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.wait()];
                    case 1:
                        _a.sent();
                        historyRequests = items.map(function (item) {
                            return _this.adapter.fetchValues(item, options);
                        });
                        return [4 /*yield*/, Promise.all(historyRequests)];
                    case 2:
                        histories = _a.sent();
                        resultEntries = items.map(function (item, i) {
                            return [item, histories[i]];
                        });
                        return [2 /*return*/, resultEntries];
                }
            });
        });
    };
    DataService.prototype.fetchDimensionValues = function (item, dimension, options) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.wait()];
                    case 1:
                        _a.sent();
                        return [4 /*yield*/, this.adapter.fetchDimensionValues(item, dimension, options)];
                    case 2: return [2 /*return*/, _a.sent()];
                }
            });
        });
    };
    DataService.prototype.fetchDimensionValuesMultiItem = function (items, options) {
        return __awaiter(this, void 0, void 0, function () {
            var historyRequests, histories, resultEntries;
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.wait()];
                    case 1:
                        _a.sent();
                        historyRequests = items.map(function (_a) {
                            var item = _a[0], dimension = _a[1];
                            return _this.adapter.fetchDimensionValues(item, dimension, options);
                        });
                        return [4 /*yield*/, Promise.all(historyRequests)];
                    case 2:
                        histories = _a.sent();
                        resultEntries = items.map(function (_a, i) {
                            var item = _a[0], dimension = _a[1];
                            return [item, dimension, histories[i]];
                        });
                        return [2 /*return*/, resultEntries];
                }
            });
        });
    };
    DataService.prototype.update = function (item) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.adapter.update(item)];
                    case 1: return [2 /*return*/, _a.sent()];
                }
            });
        });
    };
    return DataService;
}(BaseService));
export { DataService };
function keyForIdentifier(item) {
    return JSON.stringify(item);
}
function keyForItem(item) {
    return JSON.stringify([item.source, item.id]);
}
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