internal override object Clone(SqlNodeCloneContext context)
{
if (context.NodeMapping.ContainsKey(this))
{
return(context.NodeMapping[this]);
}
SqlIf clone;
clone = new SqlIf((SqlExpression)condition.Clone(context),
(SqlStatement)trueStatement.Clone(context),
falseStatement == null ? null : (SqlStatement)falseStatement.Clone(context));
context.NodeMapping[this] = clone;
return(clone);
}
internal override object Clone(SqlNodeCloneContext context)
{
if (context.NodeMapping.ContainsKey(this))
{
return(context.NodeMapping[this]);
}
SqlWhile clone = new SqlWhile((SqlExpression)condition.Clone(context));
if (statement != null)
{
clone.Statement = (SqlStatement)statement.Clone(context);
}
context.NodeMapping[this] = clone;
return(clone);
}
/// <summary>
/// We need to use same paremeters as for original query
/// </summary>
/// <param name="original"></param>
SqlStatement Clone(SqlStatement original)
{
var clone = original.Clone();
var pairs = from o in original.Parameters.Distinct()
join n in clone.Parameters.Distinct() on o.Name equals n.Name
select new { Old = o, New = n };
var dic = pairs.ToDictionary(p => p.New, p => p.Old);
clone = new QueryVisitor().Convert(clone, e =>
e is SqlParameter param && dic.TryGetValue(param, out var newParam) ? newParam : e);
clone.Parameters.Clear();
clone.Parameters.AddRange(original.Parameters);
return(clone);
}
