/// <summary>
/// Constructor
/// </summary>
/// <param name="blockSize">Capacity for strata estimator (good default is 80)</param>
/// <param name="maxStrata">Maximum strate for the strata estimator.</param>
/// <param name="configuration">The configuration</param>
/// <param name="fixedBlockSize">When <c>true</c> the block size should not be modified, else the folding strategy can be applied.</param>
public HybridEstimator(
long blockSize,
byte maxStrata,
IInvertibleBloomFilterConfiguration <TEntity, TId, int, TCount> configuration,
bool fixedBlockSize = false)
{
_strataEstimator = new StrataEstimator <TEntity, TId, TCount>(blockSize, configuration, maxStrata, fixedBlockSize: fixedBlockSize);
_strataEstimator.DecodeCountFactor = _strataEstimator.BlockSize >= 20 ? 1.45D : 1.0D;
_configuration = configuration;
}
/// <summary>
/// Compress the estimator.
/// </summary>
/// <param name="inPlace"></param>
/// <returns></returns>
public IStrataEstimator <TEntity, int, TCount> Compress(bool inPlace = false)
{
var res = Extract().Compress(Configuration);
if (inPlace)
{
Rehydrate(res);
return(this);
}
var estimator = new StrataEstimator <TEntity, TId, TCount>(res.BlockSize, Configuration, res.StrataCount);
estimator.Rehydrate(res);
return(estimator);
}
/// <summary>
/// Fold the strata estimator.
/// </summary>
/// <param name="factor"></param>
/// <param name="inPlace"></param>
/// <returns></returns>
public virtual IStrataEstimator <TEntity, int, TCount> Fold(uint factor, bool inPlace = false)
{
var res = Extract().Fold(Configuration, factor);
if (inPlace)
{
Rehydrate(res);
return(this);
}
var strataEstimator = new StrataEstimator <TEntity, TId, TCount>(res.BlockSize, Configuration, res.StrataCount);
strataEstimator.Rehydrate(res);
return(strataEstimator);
}
