private static IEnumerable <ODataExpandAssociation> MergeExpandAssociations(ODataExpandAssociation first, ODataExpandAssociation second)
{
if (first.Name != second.Name && first.Name != "*")
{
return new [] { first, second }
}
;
var result = first.Clone();
result.OrderByColumns.AddRange(second.OrderByColumns.Except(first.OrderByColumns));
result.ExpandAssociations.Clear();
var groupedExpandAssociations = first.ExpandAssociations
.Concat(second.ExpandAssociations)
.GroupBy(x => x);
var mergedExpandAssociations = groupedExpandAssociations
.Select(x =>
{
var mainAssociation = x.Key;
foreach (var association in x.Where(a => a != mainAssociation))
{
mainAssociation = MergeExpandAssociations(mainAssociation, association).First();
mainAssociation.OrderByColumns.AddRange(association.OrderByColumns.Except(mainAssociation.OrderByColumns));
}
return(mainAssociation);
});
result.ExpandAssociations.AddRange(mergedExpandAssociations);
return(new [] { result });
}
public void CloneProducesNewObjects()
{
var association = new ODataExpandAssociation("Products")
{
ExpandAssociations = { new ODataExpandAssociation("Category") }
};
var clonedAssociation = association.Clone();
Assert.NotSame(association, clonedAssociation);
Assert.NotSame(association.ExpandAssociations.First(), clonedAssociation.ExpandAssociations.First());
}
private static ODataExpandAssociation MergeOrderByColumns(ODataExpandAssociation expandAssociation, KeyValuePair <string, bool> orderByColumn)
{
if (string.IsNullOrEmpty(orderByColumn.Key))
{
return(expandAssociation);
}
var segments = orderByColumn.Key.Split('/');
if (segments[0] != expandAssociation.Name)
{
return(expandAssociation);
}
var result = expandAssociation.Clone();
MergeOrderByColumns(result, segments, orderByColumn.Value, 1);
return(result);
}
