searchRowToParameters method
Converts a SearchRow to a value binding map of named SQL parameters.
Implementation
Map<String, Object> searchRowToParameters(SearchRow row) {
checkState(index.columns.length == row.length);
var fn = (int i, SearchColumn c) => MapEntry(":$i", row[c.name]!);
return Map.fromEntries(index.columns.mapIndexed(fn));
}