public virtual IParsedLambda Parse(OrderByExpression[] orderByExpressions)
{
Ensure.That(orderByExpressions, "orderByExpressions").HasItems();
var nodesContainer = new NodesCollection();
foreach (var orderByExpression in orderByExpressions.Where(e => e != null))
{
var memberExpression = orderByExpression.InnerLambdaExpression.Body.GetRightMostMember();
if (memberExpression == null)
throw new SisoDbException(ExceptionMessages.OrderByExpressionDoesNotTargetMember.Inject(orderByExpression.ToString()));
var callExpression = (orderByExpression.InnerLambdaExpression.Body is UnaryExpression)
? ((UnaryExpression)orderByExpression.InnerLambdaExpression.Body).Operand as MethodCallExpression
: orderByExpression.InnerLambdaExpression.Body as MethodCallExpression;
if (callExpression != null)
throw new SisoDbException(ExceptionMessages.OrderByParser_UnsupportedMethodForSortingDirection);
var memberType = memberExpression.Type;
if (memberType.IsEnumerableType())
memberType = memberType.GetEnumerableElementType();
var sortDirection = orderByExpression is OrderByAscExpression ? SortDirections.Asc : SortDirections.Desc;
var memberPath = memberExpression.ToPath();
var sortingNode = new SortingNode(memberPath, memberType, DataTypeConverter.Convert(memberType, memberPath), sortDirection);
nodesContainer.AddNode(sortingNode);
}
return new ParsedLambda(nodesContainer.ToArray());
}
public void Ctor_WhenTypeIsSpecified_MemberTypeIsAssigned()
{
var node1 = new SortingNode("GOOFY", typeof (int));
var node2 = new SortingNode("GOOFY", typeof(string));
Assert.AreEqual(typeof(int), node1.MemberType);
Assert.AreEqual(typeof(string), node2.MemberType);
}
public void Ctor_WhenMemberPathStartsWithId_MemberNameIsTranslated()
{
var node = new SortingNode("IdTmp", typeof(int));
Assert.AreEqual("IdTmp", node.MemberPath);
}
public void CTor_WhenNestedMemberPathEndsWithId_MemberNameIsTranslated()
{
var node = new SortingNode("Nested.TmpId", typeof(int));
Assert.AreEqual("Nested.TmpId", node.MemberPath);
}
public void Ctor_WhenMemberPathIsStructureId_MemberNameIsTranslated()
{
var node = new SortingNode("StructureId", typeof(int));
Assert.AreEqual("StructureId", node.MemberPath);
}
