/// <summary>
/// Create filters
/// </summary>
/// <param name="estimatorData">Filter data to rehydrate.</param>
private void CreateFilters(IStrataEstimatorData <int, TCount> estimatorData = null)
{
var configuration = Configuration.ConvertToEstimatorConfiguration();
HashFunctionCount = configuration.BestHashFunctionCount(BlockSize, ErrorRate);
for (var idx = 0; idx < StrataFilters.Length; idx++)
{
if (idx >= MaxStrata)
{
StrataFilters[idx] = null;
continue;
}
var filterData = estimatorData.GetFilterForStrata(idx);
//lazily create Strata filters.
StrataFilters[idx] = new Lazy <InvertibleBloomFilter <KeyValuePair <int, int>, int, TCount> >(() =>
{
var res = new InvertibleBloomFilter <KeyValuePair <int, int>, int, TCount>(configuration);
//capacity doesn't really matter, the capacity is basically the block size.
res.Initialize(BlockSize, BlockSize, HashFunctionCount);
res.Rehydrate(filterData);
return(res);
});
}
}
