Package org.apache.drill.exec.store.base.filter

Class FilterPushDownUtils

java.lang.Object

org.apache.drill.exec.store.base.filter.FilterPushDownUtils

public class FilterPushDownUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.drill.exec.store.base.filter.FilterPushDownUtils.RelOpExtractor	REL_OP_EXTRACTOR

Constructor Summary

Constructors

Constructor	Description
FilterPushDownUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	isFilterPushDownPhase(PlannerPhase phase)	Filter push-down is best done during logical planning so that the result can influence parallelization in the physical phase.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

REL_OP_EXTRACTOR

public static final org.apache.drill.exec.store.base.filter.FilterPushDownUtils.RelOpExtractor REL_OP_EXTRACTOR

Constructor Details

FilterPushDownUtils

public FilterPushDownUtils()

Method Details

isFilterPushDownPhase

public static boolean isFilterPushDownPhase(PlannerPhase phase)

Filter push-down is best done during logical planning so that the result can influence parallelization in the physical phase. The specific phase differs depending on which planning mode is enabled. This check hides those details from storage plugins that simply want to know "should I add my filter push-down rules in the given phase?"

Returns:

true if filter push-down rules should be applied in this phase