protected virtual IMigrationMetadata CreateMigration([NotNull] string migrationName)
{
Check.NotEmpty(migrationName, "migrationName");
var sourceModel = MigrationAssembly.Model;
var targetModel = ContextConfiguration.Model;
IReadOnlyList <MigrationOperation> upgradeOperations, downgradeOperations;
if (sourceModel != null)
{
upgradeOperations = ModelDiffer.Diff(sourceModel, targetModel);
downgradeOperations = ModelDiffer.Diff(targetModel, sourceModel);
}
else
{
upgradeOperations = ModelDiffer.DiffSource(targetModel);
downgradeOperations = ModelDiffer.DiffTarget(targetModel);
}
return
(new MigrationMetadata(migrationName, CreateMigrationTimestamp())
{
TargetModel = targetModel,
UpgradeOperations = upgradeOperations,
DowngradeOperations = downgradeOperations
});
}
public override void CreateTables(IModel model)
{
Check.NotNull(model, "model");
var operations = _modelDiffer.DiffSource(model);
var statements = _generator.Generate(operations, generateIdempotentSql: false);
// TODO: Delete database on error
using (var connection = _connection.CreateConnectionReadWrite())
{
_executor.ExecuteNonQuery(connection, statements);
}
}
private IEnumerable <SqlStatement> CreateSchemaCommands(IModel model)
{
return(_sqlGenerator.Generate(_modelDiffer.DiffSource(model), generateIdempotentSql: false));
}