/// <summary>Sort this NameIndex.</summary>
/// <remarks>Sorting at the name level isn't needed by all apps, so it is optional;
/// after calling this, HasBeenSorted becomes true and Compare can be called.</remarks>
public void Sort(StringIndex stringIndex)
{
if (HasBeenSorted)
{
// only need to sort once
return;
}
NameId[] ids = new NameId[BaseTableOpt.Count + 1];
for (int i = 1; i <= BaseTableOpt.Count; i++)
{
ids[i] = new NameId(i);
}
NameSortComparer comparer = new NameSortComparer(this, stringIndex);
ids.AsMemory().ParallelSort(comparer);
// build out the table of sort orders by id
m_nameSortOrder = new SingleValueTable <NameId, int>(NameTable);
m_nameSortOrder.FillToBaseTableCount();
for (int i = 1; i < ids.Length; i++)
{
m_nameSortOrder[ids[i]] = i;
}
}
/// <summary>
/// Construct a CachingBuilder.
/// </summary>
protected CachingBuilder(SingleValueTable <TId, TValue> valueTable)
{
ValueTable = valueTable;
// Prepopulate the dictionary that does the caching
for (int i = 0; i < ValueTable.Count; i++)
{
TId id = default(TId).CreateFrom(i + 1);
Entries.Add(ValueTable[id], id);
}
}
/// <summary>
/// Construct a RelationTable from a one-to-one SingleValueTable.
/// </summary>
/// <remarks>
/// The only real point of doing this is to be able to invert the resulting relation.
/// </remarks>
public static RelationTable <TFromId, TToId> FromSingleValueTable(
SingleValueTable <TFromId, TToId> baseTable,
ITable <TToId> relatedTable)
{
RelationTable <TFromId, TToId> result = new RelationTable <TFromId, TToId>(baseTable, relatedTable);
TToId[] buffer = new TToId[1];
TToId[] empty = new TToId[0];
foreach (TFromId id in baseTable.Ids)
{
if (!s_toComparer.Equals(baseTable[id], default))
{
buffer[0] = baseTable[id];
result.Add(buffer);
}
else
{
result.Add(empty);
}
}
return(result);
}
