public virtual void ApplyMigrations(string targetMigration = null)
{
var connection = _connection.DbConnection;
_logger.Value.LogVerbose(Strings.UsingConnection(connection.Database, connection.DataSource));
var migrations = _migrationAssembly.Migrations;
var appliedMigrationEntries = _historyRepository.GetAppliedMigrations();
var appliedMigrations = new List <Migration>();
var unappliedMigrations = new List <Migration>();
foreach (var migraion in migrations)
{
if (appliedMigrationEntries.Any(
e => string.Equals(e.MigrationId, migraion.Id, StringComparison.OrdinalIgnoreCase)))
{
appliedMigrations.Add(migraion);
}
else
{
unappliedMigrations.Add(migraion);
}
}
IEnumerable <Migration> migrationsToApply;
IEnumerable <Migration> migrationsToRevert;
if (string.IsNullOrEmpty(targetMigration))
{
migrationsToApply = unappliedMigrations;
migrationsToRevert = Enumerable.Empty <Migration>();
}
else if (targetMigration == InitialDatabase)
{
migrationsToApply = Enumerable.Empty <Migration>();
migrationsToRevert = appliedMigrations;
}
else
{
targetMigration = _idGenerator.ResolveId(targetMigration, migrations);
migrationsToApply = unappliedMigrations
.Where(m => string.Compare(m.Id, targetMigration, StringComparison.OrdinalIgnoreCase) <= 0);
migrationsToRevert = appliedMigrations
.Where(m => string.Compare(m.Id, targetMigration, StringComparison.OrdinalIgnoreCase) > 0)
.OrderByDescending(m => m.Id);
}
bool first;
var checkFirst = true;
foreach (var migration in migrationsToApply)
{
var batches = ApplyMigration(migration).ToList();
first = false;
if (checkFirst)
{
first = migration == migrations[0];
if (first && !_historyRepository.Exists())
{
// TODO: Consider removing check above and always using "if not exists"
batches.Insert(0, new SqlBatch(_historyRepository.Create(ifNotExists: false)));
}
checkFirst = false;
}
_logger.Value.LogInformation(Strings.ApplyingMigration(migration.Id));
Execute(batches, first);
}
foreach (var migration in migrationsToRevert)
{
_logger.Value.LogInformation(Strings.RevertingMigration(migration.Id));
Execute(RevertMigration(migration));
}
}
public virtual void Migrate(string targetMigration = null)
{
var connection = _connection.DbConnection;
_logger.Value.LogVerbose(Strings.UsingConnection(connection.Database, connection.DataSource));
var migrations = _migrationAssembly.Migrations;
var appliedMigrationEntries = _historyRepository.GetAppliedMigrations();
var appliedMigrations = new List <Migration>();
var unappliedMigrations = new List <Migration>();
foreach (var migraion in migrations)
{
if (appliedMigrationEntries.Any(
e => string.Equals(e.MigrationId, migraion.Id, StringComparison.OrdinalIgnoreCase)))
{
appliedMigrations.Add(migraion);
}
else
{
unappliedMigrations.Add(migraion);
}
}
IReadOnlyList <Migration> migrationsToApply;
IReadOnlyList <Migration> migrationsToRevert;
if (string.IsNullOrEmpty(targetMigration))
{
migrationsToApply = unappliedMigrations;
migrationsToRevert = new Migration[0];
}
else if (targetMigration == Migration.InitialDatabase)
{
migrationsToApply = new Migration[0];
migrationsToRevert = appliedMigrations.OrderByDescending(m => m.Id).ToList();
}
else
{
targetMigration = _migrationAssembly.GetMigration(targetMigration).Id;
migrationsToApply = unappliedMigrations
.Where(m => string.Compare(m.Id, targetMigration, StringComparison.OrdinalIgnoreCase) <= 0)
.ToList();
migrationsToRevert = appliedMigrations
.Where(m => string.Compare(m.Id, targetMigration, StringComparison.OrdinalIgnoreCase) > 0)
.OrderByDescending(m => m.Id)
.ToList();
}
bool first;
var checkFirst = true;
foreach (var migration in migrationsToApply)
{
var batches = new List <SqlBatch>(GenerateUpSql(migration));
first = false;
if (checkFirst)
{
first = migration == migrations[0];
if (first && !_historyRepository.Exists())
{
// TODO: Prepend to first batch instead
batches.Insert(0, new SqlBatch(_historyRepository.GetCreateScript()));
}
checkFirst = false;
}
_logger.Value.LogInformation(Strings.ApplyingMigration(migration.Id));
Execute(batches, first);
}
for (var i = 0; i < migrationsToRevert.Count; i++)
{
var migration = migrationsToRevert[i];
_logger.Value.LogInformation(Strings.RevertingMigration(migration.Id));
Execute(GenerateDownSql(
migration,
i != migrationsToRevert.Count - 1
? migrationsToRevert[i + 1]
: null));
}
}
