Package org.apache.druid.query.filter

Interface DruidPredicateFactory

All Known Implementing Classes:

InDimFilter.InFilterDruidPredicateFactory, JavaScriptDimFilter.JavaScriptPredicateFactory, SelectorPredicateFactory, StringPredicateDruidPredicateFactory

@SubclassesMustOverrideEqualsAndHashCode
public interface DruidPredicateFactory

Method Summary

Modifier and Type	Method	Description
default boolean	isNullInputUnknown()	Indicator for if null inputs should be considered 'unknown' matches when used for filter matching with ValueMatcher.matches(boolean), VectorValueMatcher.match(ReadableVectorMatch, boolean), or BitmapColumnIndex.computeBitmapResult(BitmapResultFactory, boolean).
default com.google.common.base.Predicate<Object[]>	makeArrayPredicate(TypeSignature<ValueType> inputType)
DruidDoublePredicate	makeDoublePredicate()
DruidFloatPredicate	makeFloatPredicate()
DruidLongPredicate	makeLongPredicate()
default com.google.common.base.Predicate<Object>	makeObjectPredicate()	Object predicate is currently only used by vectorized matchers for non-string object selectors.
com.google.common.base.Predicate<String>	makeStringPredicate()

Method Detail

makeStringPredicate

com.google.common.base.Predicate<String> makeStringPredicate()

makeLongPredicate

DruidLongPredicate makeLongPredicate()

makeFloatPredicate

DruidFloatPredicate makeFloatPredicate()

makeDoublePredicate

DruidDoublePredicate makeDoublePredicate()

makeArrayPredicate

default com.google.common.base.Predicate<Object[]> makeArrayPredicate(@Nullable
                                                                      TypeSignature<ValueType> inputType)

makeObjectPredicate

default com.google.common.base.Predicate<Object> makeObjectPredicate()

Object predicate is currently only used by vectorized matchers for non-string object selectors. This currently means it will be used only if we encounter COMPLEX types, but will also include array types once they are more supported throughout the query engines. To preserve behavior with non-vectorized matchers which use a string predicate with null inputs for these 'nil' matchers, we do the same thing here.

See Also:

VectorColumnProcessorFactory.makeObjectProcessor(org.apache.druid.segment.column.ColumnCapabilities, org.apache.druid.segment.vector.VectorObjectSelector)

isNullInputUnknown

default boolean isNullInputUnknown()

Indicator for if null inputs should be considered 'unknown' matches when used for filter matching with ValueMatcher.matches(boolean), VectorValueMatcher.match(ReadableVectorMatch, boolean), or BitmapColumnIndex.computeBitmapResult(BitmapResultFactory, boolean). If returns true, unknown (null) inputs can automatically be considered matches if includeUnknown is set to true on these methods, else null inputs should be evaluated against the predicate as any other value to determine a match