insert method
Insert a new row with values under transaction ctx.
Returns the assigned row ID.
Implementation
int insert(TxnContext ctx, Map<String, dynamic> values) {
final id = values.containsKey('id') && values['id'] is int
? (values['id'] as int)
: _nextRowId;
if (id >= _nextRowId) _nextRowId = id + 1;
final withId = Map<String, dynamic>.from(values);
withId['id'] = id;
final version = MvccRowVersion(
rowId: id,
values: withId,
createdByTxn: ctx.txnId,
);
_chains[id] = MvccVersionChain(version);
return id;
}