/// <summary>
/// Exposes the ContentDirectory's Search action (for returning sorted results) as a method of a container.
/// </summary>
/// <param name="expression">IMediaComparer object that will indicate if a media object is a match</param>
/// <param name="sorter">IMediaSorter object that determines the sorting criteria for the results</param>
/// <param name="startingIndex">starting index for the search results, 0-based index</param>
/// <param name="requestedCount">maximum number of children requested</param>
/// <param name="totalMatches">total number of possible matches, sometimes has uint.MaxValue if the total possible is unknown</param>
/// <returns></returns>
public virtual IList SearchSorted(IMediaComparer expression, IMediaSorter sorter, UInt32 startingIndex, UInt32 requestedCount, out UInt32 totalMatches)
{
SortedList sorted = null;
ArrayList results = null;
if (this.m_Listing != null)
{
sorted = new SortedList(sorter, this.m_Listing.Count);
this.SearchCollection(expression, ref sorted);
int size = Convert.ToInt32(requestedCount);
if (sorted.Count < size) size = sorted.Count;
results = new ArrayList(size);
int i=0;
foreach (IUPnPMedia entry in sorted.Values)
{
if (i >= startingIndex)
{
results.Add(entry);
}
i++;
if ((results.Count >= requestedCount) && (requestedCount != 0))
{
break;
}
}
totalMatches = Convert.ToUInt32(sorted.Count);
}
else
{
results = new ArrayList(0);
totalMatches = 0;
}
return results;
}
/// <summary>
/// Exposes the ContentDirectory's Browse action (for returning sorted results) as a method of a container.
/// </summary>
/// <param name="startingIndex">starting index for the browse results, 0-based index</param>
/// <param name="requestedCount">maximum number of children requested</param>
/// <param name="sorter">IMediaSorter object that determines the sorting criteria for the results</param>
/// <param name="totalMatches">total number of possible matches</param>
/// <returns></returns>
public virtual IList BrowseSorted(UInt32 startingIndex, UInt32 requestedCount, IMediaSorter sorter, out UInt32 totalMatches)
{
this.m_LockListing.AcquireReaderLock(-1);
SortedList sorted = null;
IList results = null;
if (this.m_Listing != null)
{
sorted = new SortedList(sorter, this.m_Listing.Count);
//NKIDD-DEBUG : BEGIN - Please preserve as it's useful for finding bugs in the sorting logic
// MediaContainer tempContainer = new MediaContainer();
// tempContainer.ID = this.ID;
// foreach (IUPnPMedia child in this.m_Listing)
// {
// IUPnPMedia copy = child.MetadataCopy();
// copy.ID = child.ID;
// tempContainer.AddObject(copy, true);
// }
// IList other = tempContainer.CompleteList;
// SortedList sorted2 = new SortedList((IMediaSorter)sorter.Clone(), this.m_Listing.Count);
//NKIDD-DEBUG : END
for (int i=0; i < this.m_Listing.Count; i++)
{
IUPnPMedia child = (IUPnPMedia) this.m_Listing[i];
//NKIDD-DEBUG : BEGIN - Please preserve as it's useful for finding bugs in the sorting logic
// IUPnPMedia child2 = (IUPnPMedia) other[i];
//NKIDD-DEBUG : END
try
{
//NKIDD-DEBUG : BEGIN - Please preserve as it's useful for finding bugs in the sorting logic
// IDictionaryEnumerator ide1 = sorted.GetEnumerator();
// IDictionaryEnumerator ide2 = sorted2.GetEnumerator();
// for (int j=0; j < sorted2.Count; j++)
// {
// ide1.MoveNext();
// ide2.MoveNext();
// IUPnPMedia s1 = (IUPnPMedia) ide1.Value;
// IUPnPMedia s2 = (IUPnPMedia) ide2.Value;
//
// int cmp1 = sorter.Compare(child, s1);
// int cmp2 = sorter.Compare(child2, s2);
//
// if (cmp1 != cmp2)
// {
// sorter.Compare(child, s1);
// sorter.Compare(child2, s2);
// }
// }
//NKIDD-DEBUG : END
sorted.Add(child, child);
//NKIDD-DEBUG : BEGIN - Please preserve as it's useful for finding bugs in the sorting logic
// sorted2.Add(child2, child2);
//NKIDD-DEBUG : END
}
catch (Exception ie)
{
throw new ApplicationException("MediaContainer.BrowseSorted() had error adding child to sorted list.", ie);
}
}
results = this.BrowseCollection(startingIndex, requestedCount, sorted.Values, out totalMatches);
}
else
{
results = new object[0];
totalMatches = 0;
}
this.m_LockListing.ReleaseReaderLock();
return results;
}
