public static void ProcessLateArrivingTable(AstTableNode astTableNode)
{
var lateArrivedColumn = new AstTableColumnNode(astTableNode) { Name = "_LateArrived", IsNullable = true, ColumnType = ColumnType.DateTime2, IsAutoGenerated = true };
var markLateColumn = new AstTableColumnNode(astTableNode) { Name = "_IsLate", IsNullable = true, ColumnType = ColumnType.Boolean, IsAutoGenerated = true, Computed = "_LateArrived IS NOT NULL PERSISTED NOT NULL" };
astTableNode.Columns.Add(lateArrivedColumn);
astTableNode.Columns.Add(markLateColumn);
}
public static void ProcessTableScdColumns(AstTableNode astTableNode)
{
AstLowererValidation.ValidateScdTable(astTableNode);
bool emitScdColumns = astTableNode.Columns.Any(column => column.ScdType == ScdType.Historical);
if (emitScdColumns)
{
var scdFromColumn = new AstTableColumnNode(astTableNode) { Name = "_scdFrom", ColumnType = ColumnType.DateTime2, IsAutoGenerated = true };
astTableNode.Columns.Add(scdFromColumn);
var scdToColumn = new AstTableColumnNode(astTableNode) { Name = "_scdTo", ColumnType = ColumnType.DateTime2, IsAutoGenerated = true };
astTableNode.Columns.Add(scdToColumn);
}
}
private static void ProcessTables(AstRootNode astRootNode)
{
var tables = new List<AstTableBaseNode>(astRootNode.Tables);
foreach (var dimension in astRootNode.Dimensions)
{
tables.Add(dimension);
}
foreach (var fact in astRootNode.Facts)
{
tables.Add(fact);
}
foreach (AstTableNode table in tables)
{
if (table.LateArriving)
{
LateArrivingLowerer.ProcessLateArrivingTable(table);
}
if (table.HasScdColumns)
{
SlowlyChangingDimensionsLowerer.ProcessTableScdColumns(table);
}
foreach (var staticSourcePackage in StaticSourcesLowerer.ProcessTableStaticSource(table))
{
astRootNode.Packages.Add(staticSourcePackage);
}
if (!(table is AstTableCloneNode) && table.EmitVersionNumber)
{
var versionNumber = new AstTableColumnNode(table)
{
Name = "VersionNumber",
ColumnType = ColumnType.Binary,
Length = 8,
CustomType="rowversion",
IsAssignable=false,
IsNullable = false,
IsAutoGenerated = true
};
table.Columns.Add(versionNumber);
}
if (table.Emit)
{
astRootNode.Packages.Add(TableLowerer.ProcessTable(table));
}
}
}
