protected override void Dispose(bool disposing)
{
if (!this.disposedValue)
{
if (disposing)
{
this.MatchingRows.Clear();
foreach (MemoryNode n in this.next)
{
try
{
n.Dispose();
}
catch (Exception)
{
}
}
this.next = Array.Empty <MemoryNode>();
this.parentNode = null;
}
// TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
// TODO: set large fields to null.
this.disposedValue = true;
}
}
public void TrimNext(DataSourceBuilder sourceBuilder)
{
if (sourceBuilder is null)
{
throw new ArgumentNullException(nameof(sourceBuilder));
}
if (this.ChildHeader < 0)
{
throw new Exception();
}
foreach (TypelessDataRow row in MatchingRows)
{
MemoryNode matchNext = next[row[ChildHeader]];
matchNext?.MatchRow(row);
}
for (int i = 0; i < next.Length; i++)
{
if (next[i].Matched < sourceBuilder.Settings.Results.MinimumHits)
{
sourceBuilder.Settings.TrimmedNode?.Invoke(next[i]);
this.next[i] = null;
}
}
}
public void AddNext(MemoryNode next, int i)
{
if (next is null)
{
throw new ArgumentNullException(nameof(next));
}
this.next[i] = next;
next.parentNode = this;
}
public void RemoveNode(MemoryNode n)
{
for (int i = 0; i < this.next.Length; i++)
{
if (this.next[i] == n)
{
this.next[i] = null;
break;
}
}
}
internal SerializationResults Serialize(INodeFileStream lockedNodeFileStream, long ParentOffset = 0)
{
SerializationResults results = new SerializationResults(lockedNodeFileStream, this, ParentOffset);
long thisOffset = results.Single().Offset;
//parent 0 - 8
byte childListSize = (byte)(ParentOffset == 0 ? 4 : 2);
byte[] toWrite = new byte[DiskNode.NODE_SIZE + childListSize];
ParentOffset.ToInt40Array().CopyTo(toWrite, 0);
for (int i = 0; i < 2; i++)
{
BitConverter.GetBytes(Results[i]).CopyTo(toWrite, 5 + i * 2);
}
unchecked
{
toWrite[9] = (byte)Header;
}
BitConverter.GetBytes(Value).CopyTo(toWrite, 10);
toWrite[12] = (byte)ChildHeader;
BitConverter.GetBytes(SkipChildren).CopyTo(toWrite, 13);
int nCount = ChildCount;
byte[] childBytes;
if (childListSize == 4)
{
childBytes = BitConverter.GetBytes(nCount);
}
else
{
if (nCount > ushort.MaxValue)
{
throw new Exception($"Cant not exceed {ushort.MaxValue} children on non-root node");
}
else
{
ushort usCount = (ushort)nCount;
childBytes = BitConverter.GetBytes(usCount);
}
}
childBytes.CopyTo(toWrite, DiskNode.NODE_SIZE);
lockedNodeFileStream.Write(toWrite);
if (nCount > 0)
{
int skip = (nCount * DiskNode.NEXT_SIZE);
long ChildListOffset = lockedNodeFileStream.Offset;
byte[] skipBytes = new byte[skip];
lockedNodeFileStream.Write(skipBytes);
byte[] nextOffsets = new byte[nCount * DiskNode.NEXT_SIZE];
int i;
for (i = 0; i < nCount; i++)
{
MemoryNode nextn = this.next[i];
byte[] offsetBytes;
if (nextn != null)
{
offsetBytes = lockedNodeFileStream.Offset.ToInt40Array();
}
else
{
offsetBytes = new byte[] { 0, 0, 0, 0, 0 };
}
offsetBytes.CopyTo(nextOffsets, i * DiskNode.NEXT_SIZE);
if (nextn != null)
{
results.AddRange(nextn.Serialize(lockedNodeFileStream, thisOffset));
}
}
long lastOffset = lockedNodeFileStream.Offset;
lockedNodeFileStream.Seek(ChildListOffset - childBytes.Length - 5);
lockedNodeFileStream.Write(lastOffset.ToInt40Array());
lockedNodeFileStream.Seek(ChildListOffset);
lockedNodeFileStream.Write(nextOffsets);
lockedNodeFileStream.Seek(lastOffset);
}
return(results);
}
