public ICloneableElement Clone(Dictionary <ICloneableElement, ICloneableElement> objectTree, Predicate <ICloneableElement> doClone)
{
var newClause = new CteClause((SelectQuery)Body.Clone(objectTree, doClone), ObjectType, IsRecursive, Name);
newClause.Fields.AddRange(Fields.Select(f => (SqlField)f.Clone(objectTree, doClone)));
return(newClause);
}
void VisitX(CteClause sc)
{
foreach (var c in sc.Fields !)
{
Visit(c);
}
Visit(sc.Body);
}
internal T?Clone <T>(T?element)
where T : class, IQueryElement
{
if (element == null)
{
return(null);
}
if (_doCloneStatic != null ? !_doCloneStatic(element) : _doClone?.Invoke(_context !, element) == false)
{
return(element);
}
if (_objectTree.TryGetValue(element, out var clone))
{
return((T)clone);
}
switch (element.ElementType)
{
case QueryElementType.CteClause:
{
var cteClause = (CteClause)(IQueryElement)element;
CteClause newCteClause;
_objectTree.Add(element, clone = newCteClause = new CteClause(
cteClause.ObjectType,
cteClause.IsRecursive,
cteClause.Name));
newCteClause.Body = Clone(cteClause.Body);
newCteClause.Fields = Clone(cteClause.Fields);
break;
}
case QueryElementType.SqlQuery:
{
var selectQuery = (SelectQuery)(IQueryElement)element;
var newSelectQuery = new SelectQuery(Interlocked.Increment(ref SelectQuery.SourceIDCounter))
{
IsParameterDependent = selectQuery.IsParameterDependent,
DoNotRemove = selectQuery.DoNotRemove
};
_objectTree.Add(element, clone = newSelectQuery);
_objectTree.Add(selectQuery.All, newSelectQuery.All);
if (selectQuery.ParentSelect != null)
{
newSelectQuery.ParentSelect = _objectTree.TryGetValue(selectQuery.ParentSelect, out var parentClone) ? (SelectQuery)parentClone : selectQuery.ParentSelect;
}
newSelectQuery.Select = Clone(newSelectQuery, selectQuery.Select);
newSelectQuery.From = Clone(newSelectQuery, selectQuery.From);
newSelectQuery.Where = Clone(newSelectQuery, selectQuery.Where);
newSelectQuery.GroupBy = Clone(newSelectQuery, selectQuery.GroupBy);
newSelectQuery.Having = Clone(newSelectQuery, selectQuery.Having);
newSelectQuery.OrderBy = Clone(newSelectQuery, selectQuery.OrderBy);
if (selectQuery.HasSetOperators)
{
CloneInto(newSelectQuery.SetOperators, selectQuery.SetOperators);
}
if (selectQuery.HasUniqueKeys)
{
CloneInto(newSelectQuery.UniqueKeys, selectQuery.UniqueKeys);
}
newSelectQuery.Visit((newSelectQuery, selectQuery), static (context, expr) =>