Function computeDisplayRowsCacheKey

src/app/displayRowsCache.ts:27–43

(
    table: DictTable,
    chart: Chart,
    conceptShelfItems: FieldItem[],
)

/** Build the cache key the canvas uses for a given table + chart. */
export function computeDisplayRowsCacheKey(
    table: DictTable,
    chart: Chart,
    conceptShelfItems: FieldItem[],
): string {
    const { aggregateFields, groupByFields } = extractFieldsFromEncodingMap(
        chart.encodingMap, conceptShelfItems,
    );
    const sortedFields = [
        ...aggregateFields.map(f => `${f[0]}_${f[1]}`),
        ...groupByFields,
    ].sort();
    const contentSuffix = table.contentHash
        ? `-${table.contentHash.slice(0, 8)}`
        : `-${table.rows.length}`;
    return `${table.id}-${sortedFields.join('_')}${contentSuffix}`;
}