org.apache.flink.table.planner.plan.abilities.source

Class AggregatePushDownSpec

java.lang.Object

org.apache.flink.table.planner.plan.abilities.source.SourceAbilitySpecBase

org.apache.flink.table.planner.plan.abilities.source.AggregatePushDownSpec

All Implemented Interfaces:

SourceAbilitySpec

public final class AggregatePushDownSpec
extends SourceAbilitySpecBase

A sub-class of SourceAbilitySpec that can not only serialize/deserialize the aggregation to/from JSON, but also can push the local aggregate into a SupportsAggregatePushDown.

Field Summary

Fields

Modifier and Type	Field and Description
static String	FIELD_NAME_AGGREGATE_CALLS
static String	FIELD_NAME_GROUPING_SETS
static String	FIELD_NAME_INPUT_TYPE

Fields inherited from class org.apache.flink.table.planner.plan.abilities.source.SourceAbilitySpecBase

FIELD_NAME_PRODUCED_TYPE

Constructor Summary

Constructors

Constructor and Description
AggregatePushDownSpec(RowType inputType, List<int[]> groupingSets, List<org.apache.calcite.rel.core.AggregateCall> aggregateCalls, RowType producedType)

Method Summary

Modifier and Type	Method and Description
void	apply(DynamicTableSource tableSource, SourceAbilityContext context) Apply the ability to the given DynamicTableSource.
static boolean	apply(RowType inputType, List<int[]> groupingSets, List<org.apache.calcite.rel.core.AggregateCall> aggregateCalls, RowType producedType, DynamicTableSource tableSource, SourceAbilityContext context)
boolean	equals(Object o)
String	getDigests(SourceAbilityContext context) Additional digests to generate when this spec is applied to the source.
int	hashCode()
boolean	needAdjustFieldReferenceAfterProjection() Does this spec needs adjust field reference after projection.

Methods inherited from class org.apache.flink.table.planner.plan.abilities.source.SourceAbilitySpecBase

getProducedType

Methods inherited from class java.lang.Object

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

Field Detail

FIELD_NAME_INPUT_TYPE

public static final String FIELD_NAME_INPUT_TYPE

See Also:

Constant Field Values

FIELD_NAME_GROUPING_SETS

public static final String FIELD_NAME_GROUPING_SETS

See Also:

Constant Field Values

FIELD_NAME_AGGREGATE_CALLS

public static final String FIELD_NAME_AGGREGATE_CALLS

See Also:

Constant Field Values

Constructor Detail

AggregatePushDownSpec

public AggregatePushDownSpec(RowType inputType,
                             List<int[]> groupingSets,
                             List<org.apache.calcite.rel.core.AggregateCall> aggregateCalls,
                             RowType producedType)

Method Detail

apply

public void apply(DynamicTableSource tableSource,
                  SourceAbilityContext context)

Description copied from interface: SourceAbilitySpec

Apply the ability to the given DynamicTableSource.

getDigests

public String getDigests(SourceAbilityContext context)

Description copied from interface: SourceAbilitySpec

Additional digests to generate when this spec is applied to the source.

Parameters:

context - The context about the source.

apply

public static boolean apply(RowType inputType,
                            List<int[]> groupingSets,
                            List<org.apache.calcite.rel.core.AggregateCall> aggregateCalls,
                            RowType producedType,
                            DynamicTableSource tableSource,
                            SourceAbilityContext context)

equals

public boolean equals(Object o)

Overrides:

equals in class SourceAbilitySpecBase

hashCode

public int hashCode()

Overrides:

hashCode in class SourceAbilitySpecBase

needAdjustFieldReferenceAfterProjection

public boolean needAdjustFieldReferenceAfterProjection()

Description copied from interface: SourceAbilitySpec

Does this spec needs adjust field reference after projection. If the spec contains RexNode or references fields in scan table, the referenced field indices maybe changed after projection pushdown with scan reuse. Under such case, this method need to return true to notify planner doesn't reuse the scan.