public static CamlGroupBy Combine(CamlGroupBy firstGroupBy, CamlGroupBy secondGroupBy)
{
CamlGroupBy groupBy = null;
bool collapse = false;
int? limit = null;
var fieldRefs = new List<CamlFieldRef>();
if (firstGroupBy?.FieldRefs != null)
{
if (firstGroupBy.Limit != null)
{
limit = firstGroupBy.Limit;
}
if (firstGroupBy.Collapse != null) collapse = firstGroupBy.Collapse.Value;
fieldRefs.AddRange(firstGroupBy.FieldRefs);
}
if (secondGroupBy?.FieldRefs != null)
{
if (secondGroupBy.Limit != null)
{
limit = limit != null ? Math.Max(secondGroupBy.Limit.Value, limit.Value) : secondGroupBy.Limit;
}
if (secondGroupBy.Collapse != null)
{
collapse = collapse | secondGroupBy.Collapse.Value;
}
fieldRefs.AddRange(secondGroupBy.FieldRefs);
}
if (fieldRefs.Count > 0)
{
groupBy = new CamlGroupBy(fieldRefs, collapse, limit);
}
return groupBy;
}
public void Combine(CamlGroupBy groupBy)
{
if (groupBy != null)
{
var fieldRefs = new List<CamlFieldRef>();
if (FieldRefs != null)
{
fieldRefs.AddRange(FieldRefs);
}
if (groupBy.Limit != null)
{
Limit = Limit == null ? groupBy.Limit.Value : Math.Max(Limit.Value, groupBy.Limit.Value);
}
if (groupBy.Collapse != null)
{
Collapse = Collapse == null ? groupBy.Collapse.Value : Collapse.Value | groupBy.Collapse.Value;
}
if (groupBy.FieldRefs != null)
{
fieldRefs.AddRange(groupBy.FieldRefs);
}
this.FieldRefs = fieldRefs.ToArray();
}
}