@tableau/taco-toolkit
Version:
Tableau Connector Toolkit
173 lines • 11.8 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.DeferredFileTable = void 0;
var handler_input_1 = require("../../../shared/types/handler-input");
var DeferredFileTable = /** @class */ (function () {
function DeferredFileTable(dataTable, pipelineRunner) {
this.dataTable = dataTable;
this.pipelineRunner = pipelineRunner;
this.offset = 0;
this.hasMoreRows = true;
var handlerInput = this.dataTable.properties.handlerInput;
validateDeferredHandlerInput(handlerInput);
this.deferredHandlerInput = handlerInput;
}
DeferredFileTable.prototype.getTableName = function () {
return this.dataTable.name;
};
DeferredFileTable.prototype.getDeferredHandlerInput = function () {
return this.deferredHandlerInput;
};
DeferredFileTable.prototype.getMetadata = function () {
return __awaiter(this, void 0, void 0, function () {
var columns, parser, columnHeaders;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
columns = this.dataTable.columns;
if (columns.length > 0) {
return [2 /*return*/, {
columns: columns,
}];
}
return [4 /*yield*/, this.getParser()];
case 1:
parser = _a.sent();
return [4 /*yield*/, parser.getColumnHeaders()];
case 2:
columnHeaders = _a.sent();
return [2 /*return*/, {
columns: columnHeaders,
}];
}
});
});
};
DeferredFileTable.prototype.getNextDataRows = function (count) {
return __awaiter(this, void 0, void 0, function () {
var _a, hasMoreRows, data;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (count < 1) {
throw new Error("DeferredFileTable.getNextDataRows(): count value must be greater than 0, but found ".concat(count));
}
if (!this.hasMoreRows) {
return [2 /*return*/, []];
}
return [4 /*yield*/, this.getDataRows(count, this.offset)];
case 1:
_a = _b.sent(), hasMoreRows = _a.hasMoreRows, data = _a.data;
this.offset = this.offset + Math.min(data.length, count);
this.hasMoreRows = hasMoreRows;
return [2 /*return*/, data];
}
});
});
};
DeferredFileTable.prototype.hasNextRow = function () {
return Promise.resolve(this.hasMoreRows);
};
DeferredFileTable.prototype.resetOffset = function () {
this.hasMoreRows = true;
this.offset = 0;
};
DeferredFileTable.prototype.getDataRows = function (count, offset) {
return __awaiter(this, void 0, void 0, function () {
var parser;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getParser()];
case 1:
parser = _a.sent();
return [4 /*yield*/, parser.getDataRows(count, offset)];
case 2: return [2 /*return*/, _a.sent()];
}
});
});
};
DeferredFileTable.prototype.getRowCount = function () {
return __awaiter(this, void 0, void 0, function () {
var parser;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getParser()];
case 1:
parser = _a.sent();
return [4 /*yield*/, parser.getRowCount()];
case 2: return [2 /*return*/, _a.sent()];
}
});
});
};
DeferredFileTable.prototype.setParser = function (parser) {
this.parser = parser;
var columns = this.dataTable.columns;
if (columns.length > 0) {
this.parser.setColumnHeaders(columns);
}
};
DeferredFileTable.prototype.getParser = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this.parser) {
return [2 /*return*/, this.parser];
}
return [4 /*yield*/, this.pipelineRunner.runDeferredPipeline(this)];
case 1:
_a.sent();
if (!this.parser) {
throw new Error('Pipeline runner failed to set parser for this table');
}
return [2 /*return*/, this.parser];
}
});
});
};
return DeferredFileTable;
}());
exports.DeferredFileTable = DeferredFileTable;
function validateDeferredHandlerInput(input) {
if (!(0, handler_input_1.isFileBasedHandlerInput)(input)) {
throw new Error('The deferred handler input for DeferredFileTable must be a FileBasedHandlerInput');
}
}
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