Package org.apache.calcite.rel.core

Class TableSpool

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Spool

org.apache.calcite.rel.core.TableSpool

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

Direct Known Subclasses:

EnumerableTableSpool, LogicalTableSpool

public abstract class TableSpool
extends Spool

Spool that writes into a table.

NOTE: The current API is experimental and subject to change without notice.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.core.Spool

Spool.Type

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field	Description
protected final RelOptTable	table

Fields inherited from class org.apache.calcite.rel.core.Spool

readType, writeType

Fields inherited from class org.apache.calcite.rel.SingleRel

input

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	TableSpool(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, Spool.Type readType, Spool.Type writeType, RelOptTable table)

Method Summary

Modifier and Type	Method	Description
RelWriter	explainTerms(RelWriter pw)	Describes the inputs and attributes of this relational expression.
RelOptTable	getTable()	If this relational expression represents an access to a table, returns that table, otherwise returns null.

Methods inherited from class org.apache.calcite.rel.core.Spool

copy, copy

Methods inherited from class org.apache.calcite.rel.SingleRel

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, accept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

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

explain, fieldIsNullable, stripped

Field Details

table

protected final RelOptTable table

Constructor Details

TableSpool

protected TableSpool(RelOptCluster cluster,
 RelTraitSet traitSet,
 RelNode input,
 Spool.Type readType,
 Spool.Type writeType,
 RelOptTable table)

Method Details

getTable

public RelOptTable getTable()

Description copied from interface: RelNode

If this relational expression represents an access to a table, returns that table, otherwise returns null.

Specified by:

getTable in interface RelNode

Overrides:

getTable in class AbstractRelNode

Returns:

If this relational expression represents an access to a table, returns that table, otherwise returns null

explainTerms

public RelWriter explainTerms(RelWriter pw)

Description copied from class: AbstractRelNode

Describes the inputs and attributes of this relational expression. Each node should call super.explainTerms, then call the RelWriter.input(String, RelNode) and RelWriter.item(String, Object) methods for each input and attribute.

Overrides:

explainTerms in class Spool

Parameters:

pw - Plan writer

Returns:

Plan writer for fluent-explain pattern