private static PersistedVersioning CreateVersioning()
{
var history = new History("TableName", MockRepository.GenerateStub<IProviderMetadata>());
history.LoadEntry(ExistingTimestampForDefaultModule, string.Empty, ExistingTagForDefaultModule);
history.LoadEntry(ExistingTimestampForTestModule, TestModule, ExistingTagForTestModule);
return new PersistedVersioning(history);
}
private static PersistedVersioning CreateVersioning()
{
var history = new History(new TableName("TableName", null), A.Fake<IProviderMetadata>());
history.LoadEntry(ExistingTimestampForDefaultModule, string.Empty, ExistingTagForDefaultModule);
history.LoadEntry(ExistingTimestampForTestModule, TestModule, ExistingTagForTestModule);
return new PersistedVersioning(history);
}
public SqlAggregateMigrationGenerator(Server server, Database database, GeneratorOptions options)
: base(server, database, options)
{
var providerLocator = new ProviderLocator(new ProviderFactory()); // CLEAN: use DI container
ProviderInfo provider = providerLocator.GetExactly(DbPlatform.SqlServer2008);
var versioningTableName = new TableName(options.VersioningTableName, options.VersioningTableSchema);
_history = new History(versioningTableName, provider.Metadata);
IDbConnection connection = server.ConnectionContext.SqlConnectionObject;
connection.Open();
connection.ChangeDatabase(Database.Name); // ATTENTION: possibly has side-effects
try
{
_history.Load(connection, null);
}
finally
{
connection.Close();
}
}
private PersistedVersioning GetPersistedVersioning(IDbConnection connection, IDbTransaction transaction, IDbCommandExecutor executor)
{
if (_persistedVersioning == null)
{
var history = new History(_versioningTableName, _configuration.ProviderInfo.Metadata);
if (!_versioningTableExists.Value)
{
Debug.Assert(connection != null, "At this point, an upgrade of the versioning table is requested. This always takes part of a running migration step and therefore already has an associated connection (and possibly a transaction).");
// execute the boostrap migration to create the versioning table
var step = new BootstrapMigrationStep(new BootstrapMigration(_versioningTableName), null);
step.Execute(_configuration.ProviderInfo, connection, transaction, MigrationDirection.Up, executor);
_versioningTableExists = new Lazy<bool>(() => true); // now, the versioning table exists
}
else
{
// load the existing entries from the versioning table
IDbConnection c = connection ?? _configuration.OpenConnection();
try
{
history.Load(c, transaction);
}
finally
{
if (connection == null) // we had to open a connection ourselves
{
c.Dispose();
}
}
}
_persistedVersioning = new PersistedVersioning(history);
}
Debug.Assert(_persistedVersioning != null);
return _persistedVersioning;
}
internal PersistedVersioning(History history)
{
_history = history;
}
