Chapter 50: Row Model Factories

Core Idea

Every create*RowModel() factory referenced throughout the Row Models Guide and the feature guides has the same shape — a zero/options-arg function you register on a tableFeatures() slot — and this chapter is the flat reference for all seven plus the row/row-model types they operate on.

Key Concepts

• Row<TFeatures, TData>: the instance type from any row model's .rows (Rows Guide). RowData: the base constraint every row-shape generic (TData) extends. RowModel<TFeatures, TData>: the { rows, flatRows, rowsById } shape every row-model getter returns (Row Models Guide). RowModelFns<TFeatures, TData>: the slot type for a row-model factory function inside tableFeatures(). CachedRowModels<TFeatures, TData>: the internal cache structure backing memoized row-model computation.
• The seven create*RowModel factories, one per pipeline stage: createCoreRowModel() (automatic, rarely registered explicitly), createFilteredRowModel(), createSortedRowModel(), createGroupedRowModel(), createExpandedRowModel(), createPaginatedRowModel(), plus the faceting trio createFacetedRowModel()/createFacetedMinMaxValues()/createFacetedUniqueValues() (technically three more, all under the same factory pattern) — see the Row Models Guide's slot table for which feature each pairs with.
• constructRow(...): the internal-facing row constructor (same family as constructTable/constructColumn/constructCell/constructHeader) — the low-level object builder every adapter calls, not typically invoked directly by app code.
• expandRows(...): the internal function that flattens a grouped/nested row tree into the flat + tree views a row model exposes — what getExpandedRowModel/table.getRowModel().flatRows ultimately rely on.

Reference Tables

Factory	Registers as	Feature it pairs with
createCoreRowModel()	(automatic)	none — always included
createFilteredRowModel()	filteredRowModel	columnFilteringFeature
createSortedRowModel()	sortedRowModel	rowSortingFeature
createGroupedRowModel()	groupedRowModel	columnGroupingFeature
createExpandedRowModel()	expandedRowModel	rowExpandingFeature
createPaginatedRowModel()	paginatedRowModel	rowPaginationFeature
createFacetedRowModel()	facetedRowModel	columnFacetingFeature
createFacetedMinMaxValues()	facetedMinMaxValues	columnFacetingFeature
createFacetedUniqueValues()	facetedUniqueValues	columnFacetingFeature

Key Takeaways

1. Every factory here is called with no arguments (or, for faceting, sometimes a custom implementation per the Faceting Guide's server-side pattern) and assigned directly to its named slot in tableFeatures().
2. Registering the feature without the matching factory (or vice versa) is a type error by design — tableFeatures() validates the pairing (see Features Guide).
3. constructRow/expandRows are internals worth knowing about for debugging row-model behavior, not APIs typical app code calls.

Connects To

• Row Models Guide: the full pipeline order and slot table this chapter tabulates.
• Faceting Guide: custom facetedUniqueValues/facetedMinMaxValues factories for server-side faceting.
• Rows Guide: Row instance properties/methods in practical use.