io.druid.query.filter

Interface Filter

All Known Subinterfaces:

BooleanFilter

All Known Implementing Classes:

AndFilter, BoundFilter, DimensionPredicateFilter, InFilter, JavaScriptFilter, NotFilter, OrFilter, RegexFilter, SearchQueryFilter, SelectorFilter, SpatialFilter

public interface Filter

Method Summary

Modifier and Type	Method and Description
com.metamx.collections.bitmap.ImmutableBitmap	getBitmapIndex(BitmapIndexSelector selector) Get a bitmap index, indicating rows that match this filter.
ValueMatcher	makeMatcher(ValueMatcherFactory factory) Get a ValueMatcher that applies this filter to row values.
boolean	supportsBitmapIndex(BitmapIndexSelector selector) Indicates whether this filter can return a bitmap index for filtering, based on the information provided by the input BitmapIndexSelector.

Method Detail

getBitmapIndex

com.metamx.collections.bitmap.ImmutableBitmap getBitmapIndex(BitmapIndexSelector selector)

Get a bitmap index, indicating rows that match this filter.

Parameters:

selector - Object used to retrieve bitmap indexes

Returns:

A bitmap indicating rows that match this filter.

makeMatcher

ValueMatcher makeMatcher(ValueMatcherFactory factory)

Get a ValueMatcher that applies this filter to row values.

Parameters:

factory - Object used to create ValueMatchers

Returns:

ValueMatcher that applies this filter to row values.

supportsBitmapIndex

boolean supportsBitmapIndex(BitmapIndexSelector selector)

Indicates whether this filter can return a bitmap index for filtering, based on the information provided by the input BitmapIndexSelector.

Parameters:

selector - Object used to retrieve bitmap indexes

Returns:

true if this Filter can provide a bitmap index using the selector, false otherwise