/// <summary>
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to
/// the same compatibility standards as public APIs. It may be changed or removed without notice in
/// any release. You should only use it directly in your code with extreme caution and knowing that
/// doing so can result in application failures when updating to a new Entity Framework Core release.
/// </summary>
protected override Expression VisitExtension(Expression expression)
{
var selectExpression = expression as SelectExpression;
if (selectExpression?.Predicate != null)
{
var predicate = new EqualityPredicateInExpressionOptimizer().Visit(selectExpression.Predicate);
var predicateNegationExpressionOptimizer = new PredicateNegationExpressionOptimizer();
predicate = predicateNegationExpressionOptimizer.Visit(predicate);
predicate = new PredicateReductionExpressionOptimizer().Visit(predicate);
predicate = new EqualityPredicateExpandingVisitor().Visit(predicate);
predicate = predicateNegationExpressionOptimizer.Visit(predicate);
if (_useRelationalNulls)
{
predicate = new NullCompensatedExpression(predicate);
}
selectExpression.Predicate = predicate;
}
else if (expression is PredicateJoinExpressionBase joinExpression)
{
joinExpression.Predicate = new DiscriminatorPredicateOptimizingVisitor().Visit(joinExpression.Predicate);
joinExpression.Predicate = new EqualityPredicateInExpressionOptimizer().Visit(joinExpression.Predicate);
}
return(base.VisitExtension(expression));
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
protected override Expression VisitExtension(Expression expression)
{
var selectExpression = expression as SelectExpression;
if (selectExpression?.Predicate != null)
{
var predicate = new EqualityPredicateInExpressionOptimizer().Visit(selectExpression.Predicate);
var predicateNegationExpressionOptimizer = new PredicateNegationExpressionOptimizer();
predicate = predicateNegationExpressionOptimizer.Visit(predicate);
predicate = new PredicateReductionExpressionOptimizer().Visit(predicate);
predicate = new EqualityPredicateExpandingVisitor().Visit(predicate);
predicate = predicateNegationExpressionOptimizer.Visit(predicate);
if (_useRelationalNulls)
{
predicate = new NotNullableExpression(predicate);
}
selectExpression.Predicate = predicate;
}
return(base.VisitExtension(expression));
}
public override Expression Visit([NotNull] Expression node)
{
node = new EqualityPredicateInExpressionOptimizer().Visit(node);
var predicateNegationExpressionOptimizer = new PredicateNegationExpressionOptimizer();
node = predicateNegationExpressionOptimizer.Visit(node);
node = new EqualityPredicateExpandingVisitor().Visit(node);
node = predicateNegationExpressionOptimizer.Visit(node);
if (_useRelationalNulls)
{
node = new NotNullableExpression(node);
}
return(node);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public override Expression Visit(Expression expression)
{
if (expression != null)
{
expression = new EqualityPredicateInExpressionOptimizer().Visit(expression);
var predicateNegationExpressionOptimizer = new PredicateNegationExpressionOptimizer();
expression = predicateNegationExpressionOptimizer.Visit(expression);
expression = new PredicateReductionExpressionOptimizer().Visit(expression);
expression = new EqualityPredicateExpandingVisitor().Visit(expression);
expression = predicateNegationExpressionOptimizer.Visit(expression);
if (_useRelationalNulls)
{
expression = new NotNullableExpression(expression);
}
}
return(expression);
}
