/// <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 ShapedQueryExpression TranslateSelect(ShapedQueryExpression source, LambdaExpression selector)
{
Check.NotNull(source, nameof(source));
Check.NotNull(selector, nameof(selector));
if (selector.Body == selector.Parameters[0])
{
return(source);
}
var selectExpression = (SelectExpression)source.QueryExpression;
if (selectExpression.IsDistinct)
{
return(null);
}
var newSelectorBody = ReplacingExpressionVisitor.Replace(selector.Parameters.Single(), source.ShaperExpression, selector.Body);
return(source.UpdateShaperExpression(_projectionBindingExpressionVisitor.Translate(selectExpression, newSelectorBody)));
}
/// <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 ShapedQueryExpression TranslateSelect(ShapedQueryExpression source, LambdaExpression selector)
{
if (selector.Body == selector.Parameters[0])
{
return(source);
}
var selectExpression = (SelectExpression)source.QueryExpression;
if (selectExpression.IsDistinct)
{
throw new InvalidOperationException();
}
var newSelectorBody = ReplacingExpressionVisitor.Replace(selector.Parameters.Single(), source.ShaperExpression, selector.Body);
source.ShaperExpression = _projectionBindingExpressionVisitor
.Translate(selectExpression, newSelectorBody);
return(source);
}