org.apache.calcite.adapter.enumerable

Interface EnumerableRel

All Superinterfaces:

Cloneable, PhysicalNode, RelNode, RelOptNode

All Known Implementing Classes:

EnumerableAggregate, EnumerableBatchNestedLoopJoin, EnumerableCalc, EnumerableCollect, EnumerableCorrelate, EnumerableFilter, EnumerableHashJoin, EnumerableInterpreter, EnumerableIntersect, EnumerableLimit, EnumerableLimitSort, EnumerableMatch, EnumerableMergeJoin, EnumerableMergeUnion, EnumerableMinus, EnumerableNestedLoopJoin, EnumerableProject, EnumerableRepeatUnion, EnumerableSort, EnumerableSortedAggregate, EnumerableTableFunctionScan, EnumerableTableModify, EnumerableTableScan, EnumerableTableSpool, EnumerableUncollect, EnumerableUnion, EnumerableValues, EnumerableWindow, JdbcToEnumerableConverter

public interface EnumerableRel
extends PhysicalNode

A relational expression of one of the EnumerableConvention calling conventions.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	EnumerableRel.Prefer Preferred physical type.
static class	EnumerableRel.Result Result of implementing an enumerable relational expression by generating Java code.

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

RelNode.Context

Method Summary

Modifier and Type	Method and Description
default @Nullable Pair<RelTraitSet,List<RelTraitSet>>	deriveTraits(RelTraitSet childTraits, int childId) Derive traitset from child node, returns a pair of traits after traits derivation.
default DeriveMode	getDeriveMode() Returns mode of derivation.
EnumerableRel.Result	implement(EnumerableRelImplementor implementor, EnumerableRel.Prefer pref) Creates a plan for this expression according to a calling convention.
default @Nullable Pair<RelTraitSet,List<RelTraitSet>>	passThroughTraits(RelTraitSet required) Pass required traitset from parent node to child nodes, returns a pair of traits after traits is passed down.

Methods inherited from interface org.apache.calcite.rel.PhysicalNode

derive, derive, passThrough

Methods inherited from interface org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, copy, deepEquals, deepHashCode, estimateRowCount, explain, explain, fieldIsNullable, getConvention, getCorrelVariable, getDigest, getExpectedInputRowType, getInput, getInputs, getRelDigest, getRelTypeName, getRowType, getTable, getVariablesSet, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

Methods inherited from interface org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getId, getTraitSet

Method Detail

passThroughTraits

default @Nullable Pair<RelTraitSet,List<RelTraitSet>> passThroughTraits(RelTraitSet required)

Description copied from interface: PhysicalNode

Pass required traitset from parent node to child nodes, returns a pair of traits after traits is passed down.

Pair.left: the new traitset

Pair.right: the list of required traitsets for child nodes

Specified by:

passThroughTraits in interface PhysicalNode

deriveTraits

default @Nullable Pair<RelTraitSet,List<RelTraitSet>> deriveTraits(RelTraitSet childTraits,
                                                                   int childId)

Description copied from interface: PhysicalNode

Derive traitset from child node, returns a pair of traits after traits derivation.

Pair.left: the new traitset

Pair.right: the list of required traitsets for child nodes

Specified by:

deriveTraits in interface PhysicalNode

getDeriveMode

default DeriveMode getDeriveMode()

Description copied from interface: PhysicalNode

Returns mode of derivation.

Specified by:

getDeriveMode in interface PhysicalNode

implement

EnumerableRel.Result implement(EnumerableRelImplementor implementor,
                               EnumerableRel.Prefer pref)

Creates a plan for this expression according to a calling convention.

Parameters:

implementor - Implementor

pref - Preferred representation for rows in result expression

Returns:

Plan for this expression according to a calling convention