io.druid.query.filter

Interface DimFilter

All Known Implementing Classes:

AndDimFilter, BoundDimFilter, ExtractionDimFilter, InDimFilter, JavaScriptDimFilter, NoopDimFilter, NotDimFilter, OrDimFilter, RegexDimFilter, SearchQueryDimFilter, SelectorDimFilter, SpatialDimFilter

public interface DimFilter

Method Summary

Modifier and Type	Method and Description
byte[]	getCacheKey()
DimFilter	optimize()
Filter	toFilter() Returns a Filter that implements this DimFilter.

Method Detail

getCacheKey

byte[] getCacheKey()

optimize

DimFilter optimize()

Returns:

Returns an optimized filter. returning the same filter can be a straightforward default implementation.

toFilter

Filter toFilter()

Returns a Filter that implements this DimFilter. This does not generally involve optimizing the DimFilter, so it does make sense to optimize first and then call toFilter on the resulting DimFilter.

Returns:

a Filter that implements this DimFilter, or null if this DimFilter is a no-op.