protected RelationBase()
{
href = String.Empty;
// for mem perf. we can play with that capacity. In RelationCosmos it is later reducted to
// the used size by calling TrimToSize().
outgoingRelations = new RelationHRefList(5);
pointInTime = RelationCosmos.UnknownPointInTime;
pointInTimeIsAdjustable = true;
externalRelations = null;
}
/// <summary>
/// Returns a list of relations, that are known in RelationCosmos and that
/// the relation provided points to.
/// </summary>
/// <param name="relation">The object implementing RelationBase</param>
/// <param name="excludeRelations">List of relations,
/// that should be excluded in that check</param>
/// <returns>RelationList</returns>
public RelationList GetOutgoing(RelationBase relation, IList excludeRelations)
{
if (relation == null || relation.HRef == null)
{
return(RelationCosmos.emptyRelationList);
}
lock (syncRoot) {
try {
if (excludeRelations == null)
{
excludeRelations = (IList)RelationCosmos.emptyRelationList;
}
// check incoming:
RelationHRefList list = relation.OutgoingRelations;
if (list != null && list.Count > 0)
{
RelationList returnList = new RelationList(list.Count);
foreach (string hrefOut in list)
{
if (hrefOut != relation.HRef && !RelationListContainsHRef(excludeRelations, hrefOut) &&
registeredRelations.Contains(hrefOut))
{
returnList.Add(registeredRelations[hrefOut]);
}
}
return(returnList);
}
} catch (Exception ex) {
System.Diagnostics.Trace.WriteLine("RelationCosmos.GetOutgoing() exception: " + ex.Message);
}
return(RelationCosmos.emptyRelationList);
}
}
