void BANDB::openDB(char* dbName, char* logName) {
// Start buffer and log managers
bm->start(dbName);
lm->start(logName);
// Now the log manager has done all txnTable rebuilding and
// all redo work, so we can rollback incomplete Txns
for (int i = 0; i < 255; i++) {
TxnRecord rec = lm->txnTable.records[i];
if (rec.transID != 0) {
// For all the transactions
if (rec.state == 3) {
// If it is committed but not ended, write the end record
lm->writeEndRecord(rec.transID);
}
else if (rec.state != 5) {
// Otherwise, if it is not an ended Txn, its a looser
rollbackWork(rec.transID);
lm->writeEndRecord(rec.transID);
}
}
}
// Harden All Pages
bm->pageOut(0);
bm->pageOut(1);
}
void BANDB::createDB(char* dbName, char* logName) {
// Create db and log files, start buffer and log managers
fm->create(dbName);
fm->create(logName);
bm->start(dbName);
lm->start(logName);
}
