OData and Virtual Data with server-based Grouping

The ODataCollectionView class provides a simple way to connect controls to OData sources. When you create an ODataCollectionView, it starts loading the data in the source. The ODataVirtualCollectionView extends ODataCollectionView to provide on-demand loading of data.

ODataVirtualCollectionView class supports server-based grouping along with data-virtualization by setting the groupOnServer to true along with groupDescriptions.

Learn about FlexGrid | Binding FlexGrid to Virtual OData Documentation | FlexGrid API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import { DataType } from '@mescius/wijmo'; import { ODataVirtualCollectionView } from '@mescius/wijmo.odata'; import { FlexGrid } from '@mescius/wijmo.grid'; import { FlexGridFilter } from '@mescius/wijmo.grid.filter'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // get order details into a ODataVirtualCollectionView const url = "https://demodata.mescius.io/adventureworks/odata/v1/"; const tableName = "SalesOrderHeaders"; const fields = "AccountNumber,PurchaseOrderNumber,SalesOrderNumber,SubTotal,TaxAmt,Freight,TotalDue,ModifiedDate".split(','); var virtualDetails = new ODataVirtualCollectionView(url, tableName, { fields: fields, groupOnServer: true, groupDescriptions: ['AccountNumber'] }); // show the data on a grid var theVirtualGrid = new FlexGrid('#theVirtualGrid', { itemsSource: virtualDetails, isReadOnly: true, autoGenerateColumns: false, columns: [ { binding: 'AccountNumber', header: 'Account Number', visible: false, dataType: DataType.String }, { binding: 'PurchaseOrderNumber', header: 'Purchase Order Number', dataType: DataType.String, width: '*', minWidth: 200 }, { binding: "SalesOrderNumber", header: "Sales Order Number", dataType: DataType.String, width: '*', minWidth: 200 }, { binding: "SubTotal", header: "Sub Total", dataType: DataType.Number }, { binding: "TaxAmt", header: "Tax Amount", dataType: DataType.Number }, { binding: "Freight", header: "Freight", dataType: DataType.Number }, { binding: "TotalDue", header: "Total Due", dataType: DataType.Number }, { binding: "ModifiedDate", header: "Modified Date", dataType: DataType.Date } ], }); new FlexGridFilter(theVirtualGrid, { defaultFilterType: 'Condition' }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid OData and Virtual OData Binding</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div class="row"> <div> <h4>ODataVirtualCollectionView with server-based grouping</h4> <div id="theVirtualGrid"></div> </div> </div> </div> </body> </html>
.wj-flexgrid { height: 300px; } .wj-flexgrid .wj-rowheaders .wj-cell { font-size: 80%; padding-top: .5em; } body { margin-bottom: 20pt; }
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