public TableBufferIndex
(
ServerProcess AProcess,
Schema.Order AKey,
Schema.RowType AKeyRowType,
Schema.RowType ADataRowType,
bool AIsClustered,
int AFanout,
int ACapacity
) : base(AFanout, ACapacity, AKeyRowType.StaticByteSize, ADataRowType.StaticByteSize)
{
FKey = AKey;
#if DEBUG
for (int LIndex = 0; LIndex < FKey.Columns.Count; LIndex++)
{
if (FKey.Columns[LIndex].Sort == null)
{
throw new Exception("Sort is null");
}
}
#endif
FKeyRowType = AKeyRowType;
FDataRowType = ADataRowType;
FIsClustered = AIsClustered;
Create(AProcess);
}
public static bool IsOrderVisible(Schema.Order order, string pageType)
{
bool isVisible = Convert.ToBoolean(GetTag(order.MetaData, "Visible", pageType, "True"));
bool hasVisibleColumns = false;
if (isVisible)
{
bool isColumnVisible;
bool hasInvisibleColumns = false;
foreach (Schema.OrderColumn column in order.Columns)
{
isColumnVisible = IsColumnVisible(column.Column, pageType);
if (isColumnVisible)
{
hasVisibleColumns = true;
}
if (hasInvisibleColumns && isColumnVisible)
{
isVisible = false;
break;
}
if (!isColumnVisible)
{
hasInvisibleColumns = true;
}
}
}
return(hasVisibleColumns && isVisible);
}
protected virtual void ChangeOrderTo()
{
if (ParentGrid.DataLink.Active)
{
DAE.Client.TableDataSet dataSet = ParentGrid.DataLink.DataSet as DAE.Client.TableDataSet;
if (dataSet != null)
{
Schema.Order order = FindOrderForColumn();
if (order == null)
{
dataSet.OrderString = "order { " + ColumnName + " asc }";
}
else
{
Schema.Order currentOrder = dataSet.Order;
int currentColumnIndex = currentOrder == null ? -1 : currentOrder.Columns.IndexOf(ColumnName);
bool descending = (currentColumnIndex >= 0) && currentOrder.Columns[currentColumnIndex].Ascending;
if (!descending ^ order.Columns[ColumnName].Ascending)
{
order = new Schema.Order(order, true);
}
dataSet.Order = order;
}
}
}
}
protected override void InternalOpen()
{
// TODO: Rewrite this...
Schema.TableType tableType = new Schema.TableType();
Schema.BaseTableVar tableVar = new Schema.BaseTableVar(tableType);
Schema.TableVarColumn newColumn;
foreach (Schema.TableVarColumn column in Node.TableVar.Columns)
{
newColumn = (Schema.TableVarColumn)column.Copy();
tableType.Columns.Add(newColumn.Column);
tableVar.Columns.Add(newColumn);
}
Schema.Order order = new Schema.Order();
Schema.OrderColumn newOrderColumn;
Schema.OrderColumn orderColumn;
for (int index = 0; index < Node.Order.Columns.Count; index++)
{
orderColumn = Node.Order.Columns[index];
newOrderColumn = new Schema.OrderColumn(tableVar.Columns[orderColumn.Column], orderColumn.Ascending, orderColumn.IncludeNils);
newOrderColumn.Sort = orderColumn.Sort;
newOrderColumn.IsDefaultSort = orderColumn.IsDefaultSort;
order.Columns.Add(newOrderColumn);
}
tableVar.Orders.Add(order);
_table = new NativeTable(Manager, tableVar);
PopulateTable();
_scan = new Scan(Manager, _table, _table.ClusteredIndex, ScanDirection.Forward, null, null);
_scan.Open();
}
protected virtual void Prepare()
{
Expression expression = _elaboratedExpression.Expression;
_tableVar = _elaboratedExpression.MainElaboratedTableVar.TableVar;
Schema.Order order = GetDefaultOrder(_tableVar);
if (order != null)
{
BaseOrderExpression browseExpression;
if (Convert.ToBoolean(DerivationUtility.GetTag(_tableVar.MetaData, "UseBrowse", _elaboratedExpression.PageType, "True")))
{
browseExpression = new BrowseExpression();
}
else
{
browseExpression = new OrderExpression();
}
browseExpression.Expression = expression;
foreach (Schema.OrderColumn column in order.Columns)
{
OrderColumnDefinition definition = column.EmitStatement(EmitMode.ForCopy) as OrderColumnDefinition;
definition.ColumnName = Schema.Object.Qualify(column.Column.Name, _elaboratedExpression.MainElaboratedTableVar.ElaboratedName);
browseExpression.Columns.Add(definition);
}
expression = browseExpression;
}
_expression =
new D4TextEmitter().Emit
(
new CursorDefinition
(
expression,
CursorCapability.Navigable |
CursorCapability.BackwardsNavigable |
CursorCapability.Bookmarkable |
CursorCapability.Searchable |
CursorCapability.Updateable,
CursorIsolation.Browse,
CursorType.Dynamic
)
);
// Build the derivation info structure for use in structuring, layout and document production.
_derivationInfo = new DerivationInfo();
_derivationInfo.Program = _program;
_derivationInfo.Process = _process;
_derivationInfo.PageType = _seed.PageType;
_derivationInfo.Query = _seed.Query;
_derivationInfo.Elaborate = _seed.Elaborate;
_derivationInfo.MasterKeyNames = _seed.MasterKeyNames;
_derivationInfo.DetailKeyNames = _seed.DetailKeyNames;
_derivationInfo.KeyNames = GetKeyNames(_tableVar);
_derivationInfo.Expression = _expression;
_derivationInfo.ElaboratedExpression = _elaboratedExpression;
_derivationInfo.TableVar = _tableVar;
_derivationInfo.MainSourceName = DerivationUtility.MainSourceName;
_derivationInfo.IsReadOnly = DerivationUtility.IsReadOnlyPageType(_seed.PageType);
}
public Schema.Order OrderDefinitionToOrder(OrderDefinition order)
{
Schema.Order localOrder = new Schema.Order(order.MetaData);
foreach (OrderColumnDefinition column in order.Columns)
{
localOrder.Columns.Add(new Schema.OrderColumn(TableVar.Columns[column.ColumnName], column.Ascending, column.IncludeNils));
}
return(localOrder);
}
public int IndexOf(Schema.Order AKey)
{
for (int LIndex = 0; LIndex < Count; LIndex++)
{
if (AKey.Equivalent(this[LIndex].Key))
{
return(LIndex);
}
}
return(-1);
}
protected Schema.Order GetDefaultOrder(Schema.TableVar tableVar)
{
foreach (Schema.Order order in tableVar.Orders)
{
if (Convert.ToBoolean(DerivationUtility.GetTag(order.MetaData, "IsDefault", "False")))
{
return(new Schema.Order(order));
}
}
foreach (Schema.Key key in tableVar.Keys)
{
if (Convert.ToBoolean(DerivationUtility.GetTag(key.MetaData, "IsDefault", "False")))
{
return(new Schema.Order(key));
}
}
if (tableVar.Keys.Count > 0)
{
Schema.Order order = new Schema.Order(_program.FindClusteringKey(tableVar));
if (IsOrderVisible(order))
{
return(order);
}
foreach (Schema.Key key in tableVar.Keys)
{
order = new Schema.Order(key);
if (IsOrderVisible(order))
{
return(order);
}
}
}
if (tableVar.Orders.Count > 0)
{
foreach (Schema.Order order in tableVar.Orders)
{
if (IsOrderVisible(order))
{
return(order);
}
}
}
return(null);
}
public override void InternalRenderHeader(HtmlTextWriter writer)
{
writer.AddAttribute(HtmlTextWriterAttribute.Class, "gridheaderdatacell");
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Session.GetActionLink(Session.Get(this).Context, _headerID));
writer.RenderBeginTag(HtmlTextWriterTag.Td);
string title = GetTitle();
if (title == String.Empty)
{
writer.Write(" ");
}
else
{
writer.Write(HttpUtility.HtmlEncode(Session.RemoveAccellerator(title)));
}
DAE.Client.DataLink link = ParentGrid.DataLink;
if (link.Active)
{
DAE.Client.TableDataSet dataSet = ParentGrid.DataLink.DataSet as DAE.Client.TableDataSet;
if (dataSet != null)
{
Schema.Order order = dataSet.Order;
if ((order != null) && (order.Columns.IndexOf(ColumnName) > -1))
{
writer.Write(" ");
if (((Schema.OrderColumn)order.Columns[ColumnName]).Ascending)
{
writer.AddAttribute(HtmlTextWriterAttribute.Src, "images/downarrow.gif");
}
else
{
writer.AddAttribute(HtmlTextWriterAttribute.Src, "images/uparrow.gif");
}
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.Write(" ");
}
}
}
writer.RenderEndTag();
}
private void DetermineOrder(Plan plan)
{
Order = null;
if (SourceNode.Order != null)
{
Schema.Order newOrder = new Schema.Order();
Schema.OrderColumn orderColumn;
Schema.OrderColumn newOrderColumn;
newOrder.InheritMetaData(SourceNode.Order.MetaData);
newOrder.IsInherited = true;
for (int index = 0; index < SourceNode.Order.Columns.Count; index++)
{
orderColumn = SourceNode.Order.Columns[index];
newOrderColumn =
new Schema.OrderColumn
(
TableVar.Columns[SourceTableVar.Columns.IndexOfName(orderColumn.Column.Name)],
orderColumn.Ascending,
orderColumn.IncludeNils
);
newOrderColumn.Sort = orderColumn.Sort;
newOrderColumn.IsDefaultSort = orderColumn.IsDefaultSort;
Error.AssertWarn(newOrderColumn.Sort != null, "Sort is null");
if (newOrderColumn.IsDefaultSort)
{
plan.AttachDependency(newOrderColumn.Sort);
}
else
{
if (newOrderColumn.Sort.HasDependencies())
{
plan.AttachDependencies(newOrderColumn.Sort.Dependencies);
}
}
newOrder.Columns.Add(newOrderColumn);
}
Order = newOrder;
}
}
public Schema.Order StringToOrder(string order)
{
if (order.IndexOf(Keywords.Key) >= 0)
{
KeyDefinition keyDefinition = _parser.ParseKeyDefinition(order);
Schema.Order localOrder = new Schema.Order();
foreach (KeyColumnDefinition column in keyDefinition.Columns)
{
localOrder.Columns.Add(new Schema.OrderColumn(TableVar.Columns[column.ColumnName], true));
}
return(localOrder);
}
else
{
OrderDefinition orderDefinition = _parser.ParseOrderDefinition(order);
Schema.Order localOrder = new Schema.Order();
foreach (OrderColumnDefinition column in orderDefinition.Columns)
{
localOrder.Columns.Add(new Schema.OrderColumn(TableVar.Columns[column.ColumnName], column.Ascending, column.IncludeNils));
}
return(localOrder);
}
}
public TableBufferIndex this[Schema.Order AKey] {
get { return(this[IndexOf(AKey)]); }
}
public bool Contains(Schema.Order AKey)
{
return(IndexOf(AKey) >= 0);
}
protected void FormAccepted(IFormInterface form)
{
if
(
_sourceLinkRefresh &&
(_sourceLink != null) &&
(_sourceLink.Source != null) &&
(_sourceLink.Source.DataView.State == DataSetState.Browse) &&
(form.MainSource != null) //&&
//!Object.ReferenceEquals(FSourceLink.Source.DataView, AForm.MainSource.DataView) // Do not refresh if this is a surrogate
)
{
switch (Mode)
{
case FormMode.Delete:
form.MainSource.DataView.Close(); // Close the data view first to prevent the following refresh from causing an unnecessary requery
_sourceLink.Source.DataView.Refresh();
break;
case FormMode.Insert:
case FormMode.Edit:
// Find the nearest row in current set
DataView sourceView = _sourceLink.Source.DataView;
DataView targetView = form.MainSource.DataView;
if (sourceView != targetView)
{
// Determine RefreshSourceKey
// Determine RefreshKey
// if SourceLinkRefreshKeyNames and RefreshKeyNames are specified, use them, otherwise
// if the current order of the source link data view is a subset of the columns in the detail view, use it, otherwise
// find the minimum key in the source link data view that is a subset of the columns in the detail view and use it
Schema.Order sourceKey = null;
Schema.Order targetKey = null;
if ((SourceLinkRefreshKeyNames != "") && (RefreshKeyNames != ""))
{
string[] sourceKeyNames = SourceLinkRefreshKeyNames.Split(new char[] { ';', ',' });
string[] targetKeyNames = RefreshKeyNames.Split(new char[] { ';', ',' });
if (sourceKeyNames.Length == targetKeyNames.Length)
{
sourceKey = new Schema.Order();
targetKey = new Schema.Order();
for (int index = 0; index < sourceKeyNames.Length; index++)
{
sourceKey.Columns.Add(new Schema.OrderColumn(sourceView.TableVar.Columns[sourceKeyNames[index]], true));
targetKey.Columns.Add(new Schema.OrderColumn(targetView.TableVar.Columns[targetKeyNames[index]], true));
}
}
}
if (sourceKey == null)
{
if ((sourceView.Order != null) && sourceView.Order.Columns.IsSubsetOf(targetView.TableVar.Columns))
{
sourceKey = sourceView.Order;
targetKey = sourceView.Order;
}
else
{
Schema.Key minimumKey = sourceView.TableVar.Keys.MinimumSubsetKey(targetView.TableVar.Columns);
if (minimumKey != null)
{
sourceKey = new Schema.Order(minimumKey);
targetKey = sourceKey;
}
}
}
if (sourceKey != null)
{
using (Row row = new Row(sourceView.Process.ValueManager, new Schema.RowType(sourceKey.Columns)))
{
for (int index = 0; index < sourceKey.Columns.Count; index++)
{
DataField targetField = targetView[targetKey.Columns[index].Column.Name];
if (targetField.HasValue())
{
row[index] = targetField.Value;
}
else
{
row.ClearValue(index);
}
}
targetView.Close(); // to prevent unnecessary requery
string saveOrder = String.Empty;
if (!sourceView.Order.Equals(sourceKey))
{
saveOrder = sourceView.OrderString;
try
{
sourceView.Order = sourceKey;
}
catch (Exception exception)
{
if (sourceView.OrderString != saveOrder)
{
sourceView.OrderString = saveOrder;
}
else
{
sourceView.Refresh();
}
throw new ClientException(ClientException.Codes.UnableToFindModifiedRow, exception);
}
}
try
{
sourceView.Refresh(row);
}
finally
{
if ((saveOrder != String.Empty) && (sourceView.OrderString != saveOrder))
{
sourceView.OrderString = saveOrder;
}
}
}
}
else
{
targetView.Close();
sourceView.Refresh();
}
}
break;
}
}
if ((Mode == FormMode.Insert) && _autoAcceptAfterInsertOnQuery)
{
IFormInterface localForm = (IFormInterface)FindParent(typeof(IFormInterface));
if (localForm.Mode == FormMode.Query)
{
localForm.Close(CloseBehavior.AcceptOrClose);
}
}
if (_onFormAccepted != null)
{
_onFormAccepted.Execute(this, new EventParams("AForm", form));
}
if (OnFormAcceptedEvent != null)
{
OnFormAcceptedEvent(form);
}
}
private void ClearOrder()
{
_orderDefinition = _order != null ? (OrderDefinition)_order.EmitStatement(EmitMode.ForCopy) : null;
_order = null;
}
public override void DetermineDataType(Plan plan)
{
DetermineModifiers(plan);
_dataType = new Schema.TableType();
_tableVar = new Schema.ResultTableVar(this);
_tableVar.Owner = plan.User;
_tableVar.InheritMetaData(SourceTableVar.MetaData);
if (_expressions == null)
{
// This is a rename all expression, merge metadata and inherit columns
_tableVar.MergeMetaData(_metaData);
// Inherit columns
Schema.TableVarColumn newColumn;
foreach (Schema.TableVarColumn column in SourceTableVar.Columns)
{
newColumn = column.Inherit(_tableAlias);
DataType.Columns.Add(newColumn.Column);
TableVar.Columns.Add(newColumn);
}
}
else
{
bool columnAdded;
Schema.TableVarColumn column;
int renameColumnIndex;
for (int index = 0; index < SourceTableVar.Columns.Count; index++)
{
columnAdded = false;
foreach (RenameColumnExpression renameColumn in _expressions)
{
renameColumnIndex = SourceTableVar.Columns.IndexOf(renameColumn.ColumnName);
if (renameColumnIndex < 0)
{
throw new Schema.SchemaException(Schema.SchemaException.Codes.ObjectNotFound, renameColumn.ColumnName);
}
else if (renameColumnIndex == index)
{
if (columnAdded)
{
throw new CompilerException(CompilerException.Codes.DuplicateRenameColumn, renameColumn.ColumnName);
}
column = SourceTableVar.Columns[index].InheritAndRename(renameColumn.ColumnAlias);
column.MergeMetaData(renameColumn.MetaData);
DataType.Columns.Add(column.Column);
TableVar.Columns.Add(column);
columnAdded = true;
}
}
if (!columnAdded)
{
column = SourceTableVar.Columns[index].Inherit();
DataType.Columns.Add(column.Column);
TableVar.Columns.Add(column);
}
}
}
DetermineRemotable(plan);
// Inherit keys
Schema.Key newKey;
foreach (Schema.Key key in SourceTableVar.Keys)
{
newKey = new Schema.Key();
newKey.InheritMetaData(key.MetaData);
newKey.IsInherited = true;
newKey.IsSparse = key.IsSparse;
foreach (Schema.TableVarColumn keyColumn in key.Columns)
{
newKey.Columns.Add(TableVar.Columns[SourceTableVar.Columns.IndexOfName(keyColumn.Name)]);
}
TableVar.Keys.Add(newKey);
}
// Inherit orders
Schema.Order newOrder;
Schema.OrderColumn orderColumn;
Schema.OrderColumn newOrderColumn;
foreach (Schema.Order order in SourceTableVar.Orders)
{
newOrder = new Schema.Order();
newOrder.InheritMetaData(order.MetaData);
newOrder.IsInherited = true;
for (int index = 0; index < order.Columns.Count; index++)
{
orderColumn = order.Columns[index];
newOrderColumn =
new Schema.OrderColumn
(
TableVar.Columns[SourceTableVar.Columns.IndexOfName(orderColumn.Column.Name)],
orderColumn.Ascending,
orderColumn.IncludeNils
);
newOrderColumn.Sort = orderColumn.Sort;
newOrderColumn.IsDefaultSort = orderColumn.IsDefaultSort;
Error.AssertWarn(newOrderColumn.Sort != null, "Sort is null");
if (newOrderColumn.IsDefaultSort)
{
plan.AttachDependency(newOrderColumn.Sort);
}
else
{
if (newOrderColumn.Sort.HasDependencies())
{
plan.AttachDependencies(newOrderColumn.Sort.Dependencies);
}
}
newOrder.Columns.Add(newOrderColumn);
}
TableVar.Orders.Add(newOrder);
}
DetermineOrder(plan);
#if UseReferenceDerivation
// Copy references
#if UseElaborable
if (plan.CursorContext.CursorCapabilities.HasFlag(CursorCapability.Elaborable))
#endif
{
if (SourceTableVar.HasReferences())
{
foreach (Schema.ReferenceBase reference in SourceTableVar.References)
{
if (reference.SourceTable.Equals(SourceTableVar))
{
Schema.JoinKey sourceKey = new Schema.JoinKey();
foreach (Schema.TableVarColumn column in reference.SourceKey.Columns)
{
sourceKey.Columns.Add(TableVar.Columns[SourceTableVar.Columns.IndexOfName(column.Name)]);
}
int newReferenceID = Schema.Object.GetNextObjectID();
string newReferenceName = DeriveSourceReferenceName(reference, newReferenceID, sourceKey);
Schema.DerivedReference newReference = new Schema.DerivedReference(newReferenceID, newReferenceName, reference);
newReference.IsExcluded = reference.IsExcluded;
newReference.InheritMetaData(reference.MetaData);
newReference.SourceTable = _tableVar;
newReference.AddDependency(_tableVar);
newReference.TargetTable = reference.TargetTable;
newReference.AddDependency(reference.TargetTable);
newReference.SourceKey.IsUnique = reference.SourceKey.IsUnique;
foreach (Schema.TableVarColumn column in sourceKey.Columns)
{
newReference.SourceKey.Columns.Add(column);
}
newReference.TargetKey.IsUnique = reference.TargetKey.IsUnique;
foreach (Schema.TableVarColumn column in reference.TargetKey.Columns)
{
newReference.TargetKey.Columns.Add(column);
}
//newReference.UpdateReferenceAction = reference.UpdateReferenceAction;
//newReference.DeleteReferenceAction = reference.DeleteReferenceAction;
_tableVar.References.Add(newReference);
}
else if (reference.TargetTable.Equals(SourceTableVar))
{
Schema.JoinKey targetKey = new Schema.JoinKey();
foreach (Schema.TableVarColumn column in reference.TargetKey.Columns)
{
targetKey.Columns.Add(TableVar.Columns[SourceTableVar.Columns.IndexOfName(column.Name)]);
}
int newReferenceID = Schema.Object.GetNextObjectID();
string newReferenceName = DeriveTargetReferenceName(reference, newReferenceID, targetKey);
Schema.DerivedReference newReference = new Schema.DerivedReference(newReferenceID, newReferenceName, reference);
newReference.IsExcluded = reference.IsExcluded;
newReference.InheritMetaData(reference.MetaData);
newReference.SourceTable = reference.SourceTable;
newReference.AddDependency(reference.SourceTable);
newReference.TargetTable = _tableVar;
newReference.AddDependency(_tableVar);
newReference.SourceKey.IsUnique = reference.SourceKey.IsUnique;
foreach (Schema.TableVarColumn column in reference.SourceKey.Columns)
{
newReference.SourceKey.Columns.Add(column);
}
newReference.TargetKey.IsUnique = reference.TargetKey.IsUnique;
foreach (Schema.TableVarColumn column in targetKey.Columns)
{
newReference.TargetKey.Columns.Add(column);
}
//newReference.UpdateReferenceAction = reference.UpdateReferenceAction;
//newReference.DeleteReferenceAction = reference.DeleteReferenceAction;
_tableVar.References.Add(newReference);
}
}
}
}
#endif
}
protected bool IsOrderVisible(Schema.Order order)
{
return(DerivationUtility.IsOrderVisible(order, _seed.PageType));
}
// TODO: Compile row types for each index, saving column indexes to prevent the need for lookup during insert, update, and delete.
private void InternalInitialize(ServerProcess AProcess)
{
Schema.RowType LKeyRowType;
Schema.RowType LDataRowType;
// Create the indexes required to store data as described by the given table type
// Determine Fanout, Capacity, Clustering Key, KeyLength, DataLength
FClusteringKey = TableVar.FindClusteringOrder(AProcess.Plan);
//Schema.Key LClusteringKey = TableVar.FindClusteringKey();
//FClusteringKey = new Schema.Order(LClusteringKey, AProcess.Plan);
LKeyRowType = new Schema.RowType(FClusteringKey.Columns);
LDataRowType = new Schema.RowType();
foreach (Schema.Column LColumn in TableVar.DataType.Columns)
{
if (!FClusteringKey.Columns.Contains(LColumn.Name))
{
LDataRowType.Columns.Add(new Schema.Column(LColumn.Name, LColumn.DataType));
}
}
// Add an internal identifier for uniqueness of keys in nonunique indexes
#if USEINTERNALID
FInternalIDColumn = new Schema.TableVarColumn(new Schema.Column(CInternalIDColumnName, AProcess.Plan.Catalog.DataTypes.SystemGuid), Schema.TableVarColumnType.InternalID);
LDataRowType.Columns.Add(FInternalIDColumn.Column);
#endif
// Create the Clustered index
FClusteredIndex =
new TableBufferIndex
(
AProcess,
FClusteringKey,
LKeyRowType,
LDataRowType,
true,
FFanout,
FCapacity
);
Indexes.Add(FClusteredIndex);
// DataLength and DataColumns for all non clustered indexes is the key length and columns of the clustered key
LDataRowType = LKeyRowType;
// Create non clustered indexes for each key and order (unique sets)
Schema.Order LKey;
foreach (Schema.Key LNonClusteredKey in TableVar.Keys)
{
if (!FClusteringKey.Includes(LNonClusteredKey))
{
LKey = new Schema.Order(LNonClusteredKey, AProcess.Plan);
if (!Indexes.Contains(LKey))
{
LKeyRowType = new Schema.RowType(LKey.Columns);
Indexes.Add
(
new TableBufferIndex
(
AProcess,
LKey,
LKeyRowType,
LDataRowType,
false,
FFanout,
FCapacity
)
);
}
}
}
foreach (Schema.Order LOrder in TableVar.Orders)
{
// This is a potentially non-unique index, so add a GUID to ensure uniqueness of the key in the BTree
LKey = new Schema.Order(LOrder);
#if USEINTERNALID
if (!LKey.Includes(LClusteringKey))
{
Schema.OrderColumn LUniqueColumn = new Schema.OrderColumn(FInternalIDColumn, true);
LUniqueColumn.Sort = ((Schema.ScalarType)LUniqueColumn.Column.DataType).GetUniqueSort(AProcess.Plan);
LKey.Columns.Add(LUniqueColumn);
}
#endif
if (!Indexes.Contains(LKey))
{
LKeyRowType = new Schema.RowType(LKey.Columns);
Indexes.Add
(
new TableBufferIndex
(
AProcess,
LKey,
LKeyRowType,
LDataRowType,
false,
FFanout,
FCapacity
)
);
}
}
}
private void SetOrder()
{
_order = _cursor.Order;
_orderDefinition = null;
}