protected virtual IReadOnlyList <SqlBatch> ApplyMigrations(int targetMigrationIndex, bool simulate)
{
bool historyTableExists;
var migrationPairs = PairMigrations(MigrationAssembly.Migrations, HistoryRepository.GetRows(out historyTableExists));
var downgradeIndexes
= MigrationAssembly.Migrations
.Select((m, i) => i)
.Skip(targetMigrationIndex + 1)
.Where(i => migrationPairs[i].HistoryRow != null)
.Reverse()
.ToList();
var upgradeIndexes
= MigrationAssembly.Migrations
.Select((m, i) => i)
.Take(targetMigrationIndex + 1)
.Where(i => migrationPairs[i].HistoryRow == null)
.ToList();
if (!simulate &&
!_storeCreator.Exists())
{
_storeCreator.Create();
}
var batches = new List <SqlBatch>();
if (upgradeIndexes.Any() &&
!historyTableExists)
{
batches.AddRange(CreateHistoryTable(simulate));
}
batches.AddRange(downgradeIndexes.SelectMany(i => RevertMigration(i, simulate)));
batches.AddRange(upgradeIndexes.SelectMany(i => ApplyMigration(i, simulate)));
if (targetMigrationIndex == -1 && historyTableExists)
{
batches.AddRange(DropHistoryTable(simulate));
}
if (batches.Count == 0)
{
Logger.UpToDate();
}
return(batches);
}
protected virtual IReadOnlyList <SqlStatement> ApplyMigrations(int targetMigrationIndex, bool simulate)
{
bool historyTableExists;
var migrationPairs = PairMigrations(MigrationAssembly.Migrations, HistoryRepository.GetRows(out historyTableExists));
var downgradeIndexes
= MigrationAssembly.Migrations
.Select((m, i) => i)
.Skip(targetMigrationIndex + 1)
.Where(i => migrationPairs[i].HistoryRow != null)
.Reverse()
.ToArray();
var upgradeIndexes
= MigrationAssembly.Migrations
.Select((m, i) => i)
.Take(targetMigrationIndex + 1)
.Where(i => migrationPairs[i].HistoryRow == null)
.ToArray();
var database = (RelationalDatabase)ContextConfiguration.Database;
var statements = new List <SqlStatement>();
if (!simulate &&
!database.Exists())
{
database.Create();
}
if (upgradeIndexes.Any() &&
!historyTableExists)
{
statements.AddRange(CreateHistoryTable(simulate));
}
statements.AddRange(downgradeIndexes.SelectMany(i => RevertMigration(i, simulate)));
statements.AddRange(upgradeIndexes.SelectMany(i => ApplyMigration(i, simulate)));
if (targetMigrationIndex == -1 && historyTableExists)
{
statements.AddRange(DropHistoryTable(simulate));
}
if (statements.Count == 0)
{
Logger.UpToDate();
}
return(statements);
}
