public ColumnTree GetTargetTree() // Convert all target paths into a column tree where the target table will be a root. The tree can contain non-existing elements if they are used in the mapping.
{
ColumnTree tree = new ColumnTree(TargetTab);
Matches.ForEach(p => tree.AddPath(p.TargetPath));
return(tree);
}
public void AddTargetToSchema(DcSchema schema = null) // Ensure that all target elements exist in the specified schema
{
// The mapping can reference new elements which are not in the schema yet so we try to find them and add if necessary
if (schema == null) // Find the schema from the mapping elements
{
PathMatch match = Matches.FirstOrDefault(m => m.TargetPath.Output.IsPrimitive);
schema = match != null ? match.TargetPath.Output.Schema : null; // We assume that primitive tables always have root defined (other tables might not have been added yet).
}
ColumnTree tree = GetTargetTree();
tree.AddToSchema(schema);
}
public ColumnTree GetTargetTree(Table tab) // Convert all target paths into a column tree where the target table will be a root. The tree can contain non-existing elements if they are used in the mapping.
{
ColumnTree tree = new ColumnTree(tab);
foreach (PathMatch m in Matches)
{
// if(m.TargetPath.Input != tab) continue; // Use this if we want to take into account only paths *starting* from this table (rather than crossing this tab)
int index = m.TargetPath.IndexOfLesser(tab);
if (index < 0)
{
continue; // The path does not cross this tab
}
tree.AddPath(m.TargetPath.SubPath(index));
}
return(tree);
}
