public Expression BindNavigation(INavigation navigation)
{
if (!EntityType.IsAssignableFrom(navigation.DeclaringEntityType) &&
!navigation.DeclaringEntityType.IsAssignableFrom(EntityType))
{
throw new InvalidOperationException(
$"Called EntityProjectionExpression.GetNavigation() with incorrect INavigation. EntityType:{EntityType.DisplayName()}, Navigation:{navigation.Name}");
}
if (!_navigationExpressionsCache.TryGetValue(navigation, out var expression))
{
if (navigation.IsCollection())
{
expression = new ObjectArrayProjectionExpression(navigation, AccessExpression);
}
else
{
expression = new EntityProjectionExpression(
navigation.GetTargetType(),
new ObjectAccessExpression(navigation, AccessExpression));
}
_navigationExpressionsCache[navigation] = expression;
}
return(expression);
}
public int AddToProjection(ObjectArrayProjectionExpression objectArrayProjection) => AddToProjection(objectArrayProjection, null);
protected abstract Expression VisitObjectArrayProjection(ObjectArrayProjectionExpression objectArrayProjectionExpression);
protected override Expression VisitObjectArrayProjection(ObjectArrayProjectionExpression objectArrayProjectionExpression)
{
_sqlBuilder.Append(objectArrayProjectionExpression);
return(objectArrayProjectionExpression);
}