/// <summary>
/// Acquires a slot in the index number array for the caller's use.
/// </summary>
/// <param name="tgts">An array of the objects that are to be included in this index - they must all implement the ISupportsIndexes interface.</param>
/// <returns>System.UInt32.</returns>
/// <exception cref="ApplicationException"></exception>
public uint GetIndexSlot(object[] tgts)
{
ISupportsIndexes[] tmp = new ISupportsIndexes[tgts.Length];
try {
for (int i = 0; i < tgts.Length; i++)
{
tmp[i] = (ISupportsIndexes)tgts[i];
}
} catch (InvalidCastException) {
throw new ApplicationException(_nonSfmmoIndexRequested);
}
return(GetIndexSlot(tmp));
}
/// <summary>
/// Acquires a slot in the index number array for the caller's use.
/// </summary>
/// <param name="tgts">The objects for whom an index slot is desired.</param>
/// <returns>System.UInt32.</returns>
/// <exception cref="Highpoint.Sage.Utility.IndexingFailedException"></exception>
public uint GetIndexSlot(ISupportsIndexes[] tgts)
{
int i;
uint minNdxSize = uint.MaxValue;
for (i = 0; i < tgts.Length; i++)
{
ISupportsIndexes sfamo = tgts[i];
if (sfamo.Index == null)
{
sfamo.GrowIndex();
}
minNdxSize = (uint)Math.Min(minNdxSize, sfamo.Index.Length);
}
uint assigned = uint.MaxValue;
while (assigned == uint.MaxValue)
{
bool[] inUse = new bool[minNdxSize];
Array.Clear(inUse, 0, inUse.Length);
for (i = 0; i < tgts.Length; i++)
{
uint[] ia = tgts[i].Index;
for (int j = 0; j < minNdxSize; j++)
{
inUse[j] &= (ia[j] > 0); // TODO: This is gonna be much faster w/ pointer arithmetic.
}
}
for (i = 0; i < tgts.Length; i++)
{
if (!inUse[i])
{
assigned = (uint)i;
break;
}
}
}
if (assigned == uint.MaxValue)
{
throw new IndexingFailedException(_indexingFailed);
}
return(assigned);
}