org.apache.calcite.rel.mutable

Class MutableRels

java.lang.Object

org.apache.calcite.rel.mutable.MutableRels

public abstract class MutableRels
extends Object

Utilities for dealing with MutableRels.

Constructor Summary

Constructors

Constructor and Description
MutableRels()

Method Summary

Modifier and Type	Method and Description
static boolean	contains(MutableRel ancestor, MutableRel target)
static MutableRel	createCastRel(MutableRel rel, RelDataType castRowType, boolean rename) Equivalence to RelOptUtil.createCastRel(org.apache.calcite.rel.RelNode, org.apache.calcite.rel.type.RelDataType, boolean) for MutableRel.
static MutableRel	createProject(MutableRel child, List<Integer> posList) Equivalent to RelOptUtil.createProject(org.apache.calcite.rel.RelNode, java.util.List) for MutableRel.
static List<RexNode>	createProjectExprs(MutableRel child, List<Integer> posList) Construct expression list of Project by the given fields of the input.
static List<RexNode>	createProjects(MutableRel child, List<RexNode> projects) Construct expression list of Project by the given fields of the input.
static List<MutableRel>	descendants(MutableRel query)
static RelNode	fromMutable(MutableRel node)
static RelNode	fromMutable(MutableRel node, RelBuilder relBuilder)
static boolean	isTrivial(MutableProject project) Based on ProjectRemoveRule.isTrivial(org.apache.calcite.rel.core.Project).
static @Nullable MutableRel	preOrderTraverseNext(MutableRel node)
static MutableRel	strip(MutableProject project) Based on ProjectRemoveRule.strip(org.apache.calcite.rel.core.Project).
static MutableRel	toMutable(RelNode rel)

Methods inherited from class java.lang.Object

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

Constructor Detail

MutableRels

public MutableRels()

Method Detail

contains

public static boolean contains(MutableRel ancestor,
                               MutableRel target)

preOrderTraverseNext

public static @Nullable MutableRel preOrderTraverseNext(MutableRel node)

descendants

public static List<MutableRel> descendants(MutableRel query)

strip

public static MutableRel strip(MutableProject project)

Based on ProjectRemoveRule.strip(org.apache.calcite.rel.core.Project).

isTrivial

public static boolean isTrivial(MutableProject project)

Based on ProjectRemoveRule.isTrivial(org.apache.calcite.rel.core.Project).

createProject

public static MutableRel createProject(MutableRel child,
                                       List<Integer> posList)

Equivalent to RelOptUtil.createProject(org.apache.calcite.rel.RelNode, java.util.List) for MutableRel.

createProjectExprs

public static List<RexNode> createProjectExprs(MutableRel child,
                                               List<Integer> posList)

Construct expression list of Project by the given fields of the input.

createProjects

public static List<RexNode> createProjects(MutableRel child,
                                           List<RexNode> projects)

Construct expression list of Project by the given fields of the input.

createCastRel

public static MutableRel createCastRel(MutableRel rel,
                                       RelDataType castRowType,
                                       boolean rename)

Equivalence to RelOptUtil.createCastRel(org.apache.calcite.rel.RelNode, org.apache.calcite.rel.type.RelDataType, boolean) for MutableRel.

fromMutable

public static RelNode fromMutable(MutableRel node)

fromMutable

public static RelNode fromMutable(MutableRel node,
                                  RelBuilder relBuilder)

toMutable

public static MutableRel toMutable(RelNode rel)