internal static SnQueryPredicate OptimizeBooleans(SnQueryPredicate predicate)
{
var v = new OptimizeBooleansVisitor();
var optimizedPredicate = v.Visit(predicate);
if (!(optimizedPredicate is LogicalPredicate logicalPredicate))
{
return(optimizedPredicate);
}
var clauses = logicalPredicate.Clauses;
if (clauses.Count != 1)
{
return(logicalPredicate);
}
if (clauses[0].Occur != Occurence.MustNot)
{
return(logicalPredicate);
}
logicalPredicate.Clauses.Add(new LogicalClause(SnQuery.FullSetPredicate, Occurence.Must));
return(logicalPredicate);
}
internal static Query OptimizeBooleans(Query q)
{
var v = new OptimizeBooleansVisitor();
var q1 = v.Visit(q);
var bq = q1 as BooleanQuery;
if (bq == null)
{
return(q1);
}
var clauses = bq.GetClauses();
if (clauses.Length != 1)
{
return(bq);
}
if (clauses[0].GetOccur() != BooleanClause.Occur.MUST_NOT)
{
return(bq);
}
bq.Add(LucQuery.FullSetQuery, BooleanClause.Occur.MUST);
return(bq);
}
