Pushdown to a live OData service

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.13.0/lattice-grid.min.css">
<script src="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.13.0/lattice-grid.min.js"></script>

<div id="grid" style="height:520px"></div>

<script>
  // The adapter takes a URL and imports nothing. createPushdownSource turns the
  // grid's query into an OData request and finishes any residual in the grid.
  const adapter = LatticeGrid.odataAdapter({
    url: 'https://services.odata.org/V4/Northwind/Northwind.svc/Orders',
  });
  const source = LatticeGrid.createPushdownSource({
    adapter,
    compute: LatticeGrid,   // the grid's own kernels, for anything the service could not do
    pageSize: 100,
  });

  const grid = LatticeGrid.createGrid(document.getElementById('grid'), {
    rowKey: 'OrderID',
    toolPanel: { side: 'left', panels: ['filters', 'columns'] },
    columns: [
      { field: 'OrderID', title: 'Order', type: 'number' },
      { field: 'CustomerID', title: 'Customer', filter: { type: 'set' } },
      { field: 'ShipCountry', title: 'Ship to', filter: { type: 'set' } },
      { field: 'Freight', title: 'Freight', type: 'number' },
      { field: 'OrderDate', title: 'Ordered', type: 'dateString' },
    ],
    source,
  });

  // After each query, lastPlan() reports what the service ran and what stayed here.
  grid.on('rows:changed', () => {
    const plan = source.lastPlan();
    if (plan) console.log(plan.unpushed.length ? 'pushed part' : 'pushed all', plan);
  });
</script>