public static Expression Optimize(Expression expression, Type typeForEnums, bool simplerPartialVal = true)
{
expression = ObjectOperandComparisonExpander.Expand(expression);
expression = EnumTypeNormalizer.Normalize(expression, typeForEnums);
expression = GroupByCollator.Collate(expression);
expression = AggregateSubqueryRewriter.Rewrite(expression);
expression = UnusedColumnRemover.Remove(expression);
expression = RedundantColumnRemover.Remove(expression);
expression = RedundantSubqueryRemover.Remove(expression);
expression = FunctionCoalescer.Coalesce(expression);
expression = ExistsSubqueryOptimizer.Optimize(expression);
expression = RedundantBinaryExpressionsRemover.Remove(expression);
if (simplerPartialVal)
{
expression = Evaluator.PartialEval(expression, c => c.NodeType != (ExpressionType)SqlExpressionType.ConstantPlaceholder && Evaluator.CanBeEvaluatedLocally(c));
}
else
{
expression = Evaluator.PartialEval(expression);
}
expression = RedundantFunctionCallRemover.Remove(expression);
expression = ConditionalEliminator.Eliminate(expression);
expression = SqlExpressionCollectionOperationsExpander.Expand(expression);
expression = SumAggregatesDefaultValueCoalescer.Coalesce(expression);
expression = OrderByRewriter.Rewrite(expression);
return(expression);
}
public static Expression Collate(Expression expression)
{
var visitor = new GroupByCollator();
return(visitor.Visit(expression));
}
