private unsafe void LoadExistingDatabase()
{
var header = stackalloc TransactionHeader[1];
bool hadIntegrityIssues = _journal.RecoverDatabase(header);
if (hadIntegrityIssues)
{
var message = _journal.Files.Count == 0 ? "Unrecoverable database" : "Database recovered partially. Some data was lost.";
_options.InvokeRecoveryError(this, message, null);
}
var entry = _headerAccessor.CopyHeader();
var nextPageNumber = (header->TransactionId == 0 ? entry.LastPageNumber : header->LastPageNumber) + 1;
State = new StorageEnvironmentState(null, null, nextPageNumber)
{
NextPageNumber = nextPageNumber,
Options = Options
};
_transactionsCounter = (header->TransactionId == 0 ? entry.TransactionId : header->TransactionId);
using (var tx = NewTransaction(TransactionFlags.ReadWrite))
{
var root = Tree.Open(tx, header->TransactionId == 0 ? &entry.Root : &header->Root);
var freeSpace = Tree.Open(tx, header->TransactionId == 0 ? &entry.FreeSpace : &header->FreeSpace);
tx.UpdateRootsIfNeeded(root, freeSpace);
tx.Commit();
}
}
private void CreateNewDatabase()
{
const int initialNextPageNumber = 0;
State = new StorageEnvironmentState(null, null, initialNextPageNumber)
{
Options = Options
};
using (var tx = NewTransaction(TransactionFlags.ReadWrite))
{
var root = Tree.Create(tx, false);
var freeSpace = Tree.Create(tx, false);
// important to first create the two trees, then set them on the env
tx.UpdateRootsIfNeeded(root, freeSpace);
tx.Commit();
//since this transaction is never shipped, this is the first previous transaction
//when applying shipped logs
}
}
private unsafe void CreateNewDatabase()
{
const int initialNextPageNumber = 0;
State = new StorageEnvironmentState(null, null, initialNextPageNumber);
using (var tx = NewTransaction(TransactionFlags.ReadWrite))
{
var root = Tree.Create(tx, _sliceComparer);
var freeSpace = Tree.Create(tx, _sliceComparer);
// important to first create the two trees, then set them on the env
tx.UpdateRootsIfNeeded(root, freeSpace);
tx.Commit();
}
}
