io.druid.query.filter

Interface BooleanFilter

All Superinterfaces:

Filter

All Known Implementing Classes:

AndFilter, OrFilter

public interface BooleanFilter
extends Filter

Method Summary

Modifier and Type	Method and Description
List<Filter>	getFilters()
ValueMatcher	makeMatcher(BitmapIndexSelector selector, ColumnSelectorFactory columnSelectorFactory, RowOffsetMatcherFactory rowOffsetMatcherFactory) Get a ValueMatcher that applies this filter to row values.

Methods inherited from interface io.druid.query.filter.Filter

estimateSelectivity, getBitmapIndex, makeMatcher, supportsBitmapIndex, supportsSelectivityEstimation

Method Detail

getFilters

List<Filter> getFilters()

makeMatcher

ValueMatcher makeMatcher(BitmapIndexSelector selector,
                         ColumnSelectorFactory columnSelectorFactory,
                         RowOffsetMatcherFactory rowOffsetMatcherFactory)

Get a ValueMatcher that applies this filter to row values. Unlike makeMatcher(ValueMatcherFactory), this method allows the Filter to utilize bitmap indexes. An implementation should either: - return a ValueMatcher that checks row values, using the provided ValueMatcherFactory - or, if possible, get a bitmap index for this filter using the BitmapIndexSelector, and return a ValueMatcher that checks the current row offset, created using the bitmap index.

Parameters:

selector - Object used to retrieve bitmap indexes

columnSelectorFactory - Object used to select columns for making ValueMatchers

rowOffsetMatcherFactory - Object used to create RowOffsetMatchers

Returns:

ValueMatcher that applies this filter