public static bool RewriteQuery(T_Tile toFill, T_Tile toAvoid, out T_Tile rewriting, List <T_Tile> views, RewritingProcessor <T_Tile> qp)
{
RewritingPass <T_Tile> rewritingPass = new RewritingPass <T_Tile>(toFill, toAvoid, views, qp);
if (rewritingPass.RewriteQuery(out rewriting))
{
RewritingSimplifier <T_Tile> .TrySimplifyUnionRewriting(ref rewriting, toFill, toAvoid, qp);
return(true);
}
return(false);
}
private static bool RewriteQueryInternal(T_Tile toFill, T_Tile toAvoid, out T_Tile rewriting, List <T_Tile> views, HashSet <T_Tile> recentlyUsedViews, RewritingProcessor <T_Tile> qp)
{
if (qp.REORDER_VIEWS && recentlyUsedViews.Count > 0)
{
// move recently used views toward the end
List <T_Tile> reorderedViews = new List <T_Tile>();
foreach (T_Tile view in views)
{
if (false == recentlyUsedViews.Contains(view))
{
reorderedViews.Add(view);
}
}
reorderedViews.AddRange(recentlyUsedViews);
views = reorderedViews;
}
RewritingPass <T_Tile> rewritingPass = new RewritingPass <T_Tile>(toFill, toAvoid, views, qp);
return(rewritingPass.RewriteQuery(out rewriting));
}
public bool RewriteQueryOnce(T_Tile toFill, T_Tile toAvoid, IEnumerable <T_Tile> views, out T_Tile rewriting)
{
List <T_Tile> viewList = new List <T_Tile>(views);
return(RewritingPass <T_Tile> .RewriteQuery(toFill, toAvoid, out rewriting, viewList, this));
}