protected override Expression VisitSubQuery(SubQueryExpression subQueryExpression)
{
var navigationRewritingExpressionVisitor
= new NavigationRewritingExpressionVisitor(_queryModelVisitor, _entityQueryProvider);
navigationRewritingExpressionVisitor.Rewrite(subQueryExpression.QueryModel);
return(subQueryExpression);
}
protected override Expression VisitNew(NewExpression newExpression)
{
Check.NotNull(newExpression, nameof(newExpression));
if (newExpression.Members != null &&
newExpression.Arguments.Any() &&
newExpression.Arguments.Count == newExpression.Members.Count)
{
var memberBindings
= newExpression.Arguments
.Select(Visit)
.Where(e => e != null)
.ToArray();
if (memberBindings.Length == newExpression.Arguments.Count)
{
return(Expression.Constant(memberBindings));
}
}
else if (NavigationRewritingExpressionVisitor.IsCompositeKey(newExpression.Type))
{
var propertyCallExpressions
= ((NewArrayExpression)newExpression.Arguments.Single()).Expressions;
var memberBindings
= propertyCallExpressions
.Select(Visit)
.Where(e => e != null)
.ToArray();
if (memberBindings.Length == propertyCallExpressions.Count)
{
return(Expression.Constant(memberBindings));
}
}
return(null);
}
