public IRelationalRow IndexedLookup(string indexName, int key)
{
if (key == 0)
{
return(null);
}
RelationalDataIndex <T> index = _indexes.GetOrAdd(indexName, i => {
RelationalColumn column = Header.FindColumn(indexName);
if (column == null)
{
throw new KeyNotFoundException();
}
return(new RelationalDataIndex <T>(this, column));
});
return(index[key]);
}
public IRelationalRow IndexedLookup(string indexName, int key)
{
if (key == 0)
{
return(null);
}
if (!_indexes.TryGetValue(indexName, out var index))
{
var column = Header.FindColumn(indexName);
if (column == null)
{
throw new KeyNotFoundException();
}
_indexes[indexName] = index = new RelationalDataIndex <T>(this, column);
}
return(index[key]);
}