protected virtual ShapedQueryExpression TranslateResultSelectorForJoin(
[NotNull] ShapedQueryExpression outer,
[NotNull] LambdaExpression resultSelector,
[NotNull] Expression innerShaper,
[CanBeNull] Type transparentIdentifierType)
{
Check.NotNull(outer, nameof(outer));
Check.NotNull(resultSelector, nameof(resultSelector));
Check.NotNull(innerShaper, nameof(innerShaper));
outer = outer.UpdateShaperExpression(
CombineShapers(outer.QueryExpression, outer.ShaperExpression, innerShaper, transparentIdentifierType));
var transparentIdentifierParameter = Expression.Parameter(transparentIdentifierType);
Expression original1 = resultSelector.Parameters[0];
var replacement1 = AccessOuterTransparentField(transparentIdentifierType, transparentIdentifierParameter);
Expression original2 = resultSelector.Parameters[1];
var replacement2 = AccessInnerTransparentField(transparentIdentifierType, transparentIdentifierParameter);
var newResultSelector = Expression.Lambda(
new ReplacingExpressionVisitor(
new Dictionary <Expression, Expression> {
{ original1, replacement1 }, { original2, replacement2 }
})
.Visit(resultSelector.Body),
transparentIdentifierParameter);
return(TranslateSelect(outer, newResultSelector));
}
