/**
* Intersect(A, Union(A, B)) -> A
* Removes from the specified array list union predicates which contain
* members of the current intersection.
*/
private void RemoveIntersectingUnions(ArrayList newPredicateList, ref bool optimized)
{
for (int i = newPredicateList.Count - 1; i >= 0; i--)
{
UnionPredicate sourceUnion = newPredicateList [i] as UnionPredicate;
if (sourceUnion != null)
{
for (int j = 0; j < newPredicateList.Count; j++)
{
if (i != j && sourceUnion.ContainsPredicate((ResourceListPredicate)newPredicateList [j]))
{
newPredicateList.RemoveAt(i);
optimized = true;
break;
}
}
}
}
}
public IResourceList Union(IResourceList other, bool allowMerge)
{
if (other == null)
{
return(this);
}
ResourceList otherList = (ResourceList)other;
if (allowMerge)
{
ResourceList destList = this;
ResourceList srcList = otherList;
UnionPredicate predicate = null;
if (_list == null)
{
predicate = _predicate as UnionPredicate;
}
if (predicate == null && otherList._list == null)
{
srcList = this;
destList = otherList;
predicate = otherList._predicate as UnionPredicate;
}
if (predicate != null)
{
predicate.AddSource(srcList.Predicate);
return(MergeListData(destList, srcList));
}
}
UnionPredicate pred = new UnionPredicate(_predicate, otherList._predicate);
ResourceList result = new ResourceList(pred, _isLive || otherList.IsLive);
return(MergeListData(result, this, otherList));
}