private bool TryGetQueryItems(QueryX query, out List <Item> items, Item key = null)
{
items = null;
if (query != null)
{
if (key == null)
{
if (Get <Relation_Store_QueryX>().TryGetParent(query, out Store sto))
{
items = sto.GetItems();
}
}
else
{
if (Get <Relation_Relation_QueryX>().TryGetParent(query, out Relation rel))
{
if (query.IsReversed)
{
rel.TryGetParents(key, out items);
}
else
{
rel.TryGetChildren(key, out items);
}
}
}
if (query.HasWhere)
{
items = ApplyFilter(query, items);
}
}
return(items != null && items.Count > 0);
}
private bool CanDropQueryXRelation(QueryX qx, Relation re)
{
GetHeadTail(qx, out Store p1, out Store c1);
GetHeadTail(re, out Store p2, out Store c2);
return(p1 == p2 || c1 == c2 || p1 == c2 || c1 == p2);
}
private void ValidateQueryDependants(QueryX qx)
{
var QueryX_QueryX = Get <Relation_QueryX_QueryX>();
var ComputeX_QueryX = Get <Relation_ComputeX_QueryX>();
var GraphX_QueryX = Get <Relation_GraphX_QueryX>();
var SymbolX_QueryX = Get <Relation_SymbolX_QueryX>();
var QueryXDomain = Get <QueryXRoot>();
while (QueryX_QueryX.TryGetParent(qx, out QueryX qp))
{
qx = qp;
}
if (ComputeX_QueryX.TryGetParent(qx, out ComputeX cx))
{
ValidateComputeQuery(cx, true);
}
else if (GraphX_QueryX.TryGetParent(qx, out GraphX gx))
{
ValidateGraphQuery(gx, true);
}
else if (SymbolX_QueryX.TryGetParent(qx, out SymbolX sx))
{
ValidateWhere(qx, qx, Get <Property_QueryX_Where>(), true);
}
}
internal Query(QueryX qx, Query parent, Item item, Item[] items)
{
Owner = qx;
Item = item;
Items = items;
Parent = parent;
SetState(qx.GetState()); // copy the queryX state flags
}
internal void AddNewComputeX(Model_666_ComputeList m)
{
var st = m.Item;
var cx = new ComputeX(_computeXManager, true);
var qx = new QueryX(_queryXManager, QueryType.Value, true, true);
// the data root implements undo/redo functionality
ItemCreated.Record(Owner, cx);
ItemCreated.Record(Owner, qx);
ItemLinked.Record(Owner, _relation_Store_QueryX, st, qx);
ItemLinked.Record(Owner, _relation_Store_ComputeX, st, cx);
ItemLinked.Record(Owner, _relation_ComputeX_QueryX, cx, qx);
}
internal void GetHeadTail(QueryX sx, out Store head, out Store tail)
{
if (Get <Relation_Relation_QueryX>().TryGetParent(sx, out Relation re))
{
GetHeadTail(re, out head, out tail);
if (sx.IsReversed)
{
var temp = head; head = tail; tail = temp;
}
}
else
{
Get <Relation_Store_QueryX>().TryGetParent(sx, out head);
tail = head;
}
}
internal Store GetQueryXTarget(QueryX qx)
{
Store target = null;
if (Get <Relation_Relation_QueryX>().TryGetParent(qx, out Relation re))
{
GetHeadTail(re, out Store head, out target);
if (qx.IsReversed)
{
target = head;
}
}
else
{
Get <Relation_Store_QueryX>().TryGetParent(qx, out target);
}
return(target);
}
internal bool RefreshGraphX(QueryX qx)
{
var GraphX_QueryX = Get <Relation_GraphX_QueryX>();
var QueryX_QueryX = Get <Relation_QueryX_QueryX>();
var qr = qx;
while (QueryX_QueryX.TryGetParent(qr, out qx))
{
qr = qx;
}
if (GraphX_QueryX.TryGetParent(qr, out GraphX gx))
{
RefreshGraphX(gx);
}
return(true);
}
internal void SetComputeTypeProperty(ComputeX cx, CompuType type)
{
QueryX qh;
if (!_relation_ComputeX_QueryX.TryGetChild(cx, out qh))
{
qh = new QueryX(_queryXManager, QueryType.Value);
_relation_ComputeX_QueryX.SetLink(cx, qh);
}
if (cx.CompuType != type)
{
cx.CompuType = type;
cx.Value.Clear();
switch (type)
{
case CompuType.RowValue:
if (_relation_QueryX_QueryX.TryGetChildren(qh, out IList <QueryX> qxList))
{
foreach (var qx in qxList.ToArray())
{
_changeManager.RemoveItem(qx);
}
cx.ChildDelta++;
cx.AutoExpandRight = true;
}
break;
case CompuType.RelatedValue:
break;
case CompuType.CompositeString:
break;
case CompuType.CompositeReversed:
break;
}
AllocateValueCache(cx);
}
}
bool ValidateSelect(QueryX qx, Item item, Property prop, bool clearError)
{
if (clearError)
{
ClearError(item, prop);
}
var sto = GetQueryXTarget(qx);
if (qx.Select != null)
{
qx.ModelDelta++;
if (qx.Select.TryValidate(sto))
{
qx.Select.TryResolve();
if (qx.Select.AnyUnresolved)
{
var error = TryAddErrorMany(item, prop, IdKey.QueryUnresolvedSelectError);
if (error != null)
{
qx.Select.GetTree(error.List);
}
return(false);
}
}
else
{
var error = TryAddErrorMany(item, prop, IdKey.QueryInvalidSelectError);
if (error != null)
{
qx.Select.GetTree(error.List);
}
return(false);
}
}
return(true);
}
internal int GetValueType(QueryX qx) => qx.Select is null ? (int)ValType.IsUnknown : (int)qx.Select.ValueType;
private (int L1, IList <Property> PropertyList, int L2, IList <QueryX> QueryList, int L3, IList <ViewX> ViewList) GetQueryXChildren(QueryX qx)
{
int L1 = Get <Relation_QueryX_Property>().TryGetChildren(qx, out IList <Property> ls1) ? ls1.Count : 0;
int L2 = Get <Relation_QueryX_QueryX>().TryGetChildren(qx, out IList <QueryX> ls2) ? ls2.Count : 0;
int L3 = Get <Relation_QueryX_ViewX>().TryGetChildren(qx, out IList <ViewX> ls3) ? ls3.Count : 0;
return(L1, ls1, L2, ls2, L3, ls3);
}
internal string GetWhereName(QueryX sx)
{
GetHeadTail(sx, out Store head, out Store tail);
return(tail.GetNameId());
}
internal string GetSelectName(QueryX vx)
{
GetHeadTail(vx, out Store head, out Store tail);
return(tail.GetNameId());
}
string GetRelationName(QueryX sd)
{
return(Get <Relation_Relation_QueryX>().TryGetParent(sd, out Relation rel) ? GetRelationName(rel) : null);
}