io.druid.query.filter

Interface ValueMatcherColumnSelectorStrategy<ValueSelectorType>

All Superinterfaces:

ColumnSelectorStrategy

All Known Implementing Classes:

DoubleValueMatcherColumnSelectorStrategy, FloatValueMatcherColumnSelectorStrategy, LongValueMatcherColumnSelectorStrategy, StringValueMatcherColumnSelectorStrategy

public interface ValueMatcherColumnSelectorStrategy<ValueSelectorType>
extends ColumnSelectorStrategy

Method Summary

Modifier and Type	Method and Description
ValueGetter	makeValueGetter(ValueSelectorType selector) Create a ValueGetter.
ValueMatcher	makeValueMatcher(ValueSelectorType selector, DruidPredicateFactory predicateFactory) Create a predicate-based ValueMatcher.
ValueMatcher	makeValueMatcher(ValueSelectorType selector, String value) Create a single value ValueMatcher.

Method Detail

makeValueMatcher

ValueMatcher makeValueMatcher(ValueSelectorType selector,
                              String value)

Create a single value ValueMatcher.

Parameters:

selector - Column selector

value - Value to match against

Returns:

ValueMatcher that matches on 'value'

makeValueMatcher

ValueMatcher makeValueMatcher(ValueSelectorType selector,
                              DruidPredicateFactory predicateFactory)

Create a predicate-based ValueMatcher.

Parameters:

selector - Column selector

predicateFactory - A DruidPredicateFactory that provides the filter predicates to be matched

Returns:

A ValueMatcher that applies the predicate for this DimensionQueryHelper's value type from the predicateFactory

makeValueGetter

ValueGetter makeValueGetter(ValueSelectorType selector)

Create a ValueGetter.

Parameters:

selector - Column selector

Returns:

A ValueGetter that returns the value(s) of the selected column