in src/main/java/org/apache/datasketches/hive/quantiles/GetPmfFromStringsSketchUDF.java [68:81]
public List<Double> evaluate(final BytesWritable serializedSketch, Boolean inclusive, final String... splitPoints) {
if (serializedSketch == null) { return null; }
final ItemsSketch<String> sketch = ItemsSketch.getInstance(
String.class,
BytesWritableHelper.wrapAsMemory(serializedSketch),
Comparator.naturalOrder(),
new ArrayOfStringsSerDe()
);
if (sketch.isEmpty()) { return null; }
final double[] pmf = sketch.getPMF(splitPoints,
(inclusive ? QuantileSearchCriteria.INCLUSIVE : QuantileSearchCriteria.EXCLUSIVE));
if (pmf == null) { return null; }
return Util.primitivesToList(pmf);
}