// creates new designer with arguments (safe)
internal static NameChainer GetNewDesigner(
string name,
bool isEmbeddedTransaction,
bool isEmbeddedTryCatch, Designer.IsolationLevel isolationLevel = IsolationLevel.Default)
{
var root = new InternalRoot(isEmbeddedTransaction);
root.IsEmbeddedTryCatch = isEmbeddedTryCatch;
root.Name = name;
return(new NameChainer(root, isolationLevel));
}
internal SetIsolationLevelChainer(Chainer prev, Designer.IsolationLevel isolationLevel)
: base(prev)
{
Build = (buildContext, buildArgs) =>
{
string isolation = isolationLevel.ToSql();
return(Text.GenerateSql(50)
.NewLine(Text.SetTransactionIsolationLevel).S()
.Append(isolation)
.Terminate()
.ToString());
};
}
internal NameChainer(Chainer prev,
Designer.IsolationLevel embeddedTransactionIsolationLevel = Designer.IsolationLevel.Default)
: base(prev)
{
// check root reuse
var root = prev.GetRoot();
if (root.IsUsed)
{
if (root.Node != null && root.Node.IsUsed)
{
throw new QueryTalkException("NameChainer.ctor",
QueryTalkExceptionType.RootReuseDisallowed, String.Format("root = {0}", root.Name));
}
root.ClearForReuse();
}
root.SetAsUsed();
root.EmbeddedTransactionIsolationLevel = embeddedTransactionIsolationLevel;
}
/// <summary>
/// Controls the locking and row versioning behavior of Transact-SQL statements issued by a connection to SQL Server.
/// </summary>
/// <param name="prev">A predecessor object.</param>
/// <param name="isolationLevel">A type of the isolation level.</param>
public static SetIsolationLevelChainer SetIsolationLevel(this IAny prev, Designer.IsolationLevel isolationLevel)
{
return(new SetIsolationLevelChainer((Chainer)prev, isolationLevel));
}
