org.apache.calcite.rel.mutable

Class MutableProject

java.lang.Object

org.apache.calcite.rel.mutable.MutableRel

org.apache.calcite.rel.mutable.MutableSingleRel

org.apache.calcite.rel.mutable.MutableProject

public class MutableProject
extends MutableSingleRel

Mutable equivalent of Project.

Field Summary

Fields

Modifier and Type	Field and Description
List<RexNode>	projects

Fields inherited from class org.apache.calcite.rel.mutable.MutableSingleRel

input

Fields inherited from class org.apache.calcite.rel.mutable.MutableRel

cluster, ordinalInParent, PAIRWISE_STRING_EQUIVALENCE, parent, rowType, STRING_EQUIVALENCE, type

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MutableProject(RelDataType rowType, MutableRel input, List<RexNode> projects)

Method Summary

Modifier and Type	Method and Description
MutableRel	clone()
StringBuilder	digest(StringBuilder buf)
boolean	equals(Object obj)
Mappings.TargetMapping	getMapping()
List<Pair<RexNode,String>>	getNamedProjects() Returns a list of (expression, name) pairs.
int	hashCode()
static MutableRel	of(MutableRel input, List<RexNode> exprList, List<String> fieldNameList) Creates a MutableProject.
static MutableProject	of(RelDataType rowType, MutableRel input, List<RexNode> projects) Creates a MutableProject.

Methods inherited from class org.apache.calcite.rel.mutable.MutableSingleRel

childrenAccept, getInput, getInputs, setInput

Methods inherited from class org.apache.calcite.rel.mutable.MutableRel

deep, getParent, replaceInParent, toString

Methods inherited from class java.lang.Object

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

Field Detail

projects

public final List<RexNode> projects

Constructor Detail

MutableProject

private MutableProject(RelDataType rowType,
                       MutableRel input,
                       List<RexNode> projects)

Method Detail

of

public static MutableProject of(RelDataType rowType,
                                MutableRel input,
                                List<RexNode> projects)

Creates a MutableProject.

Parameters:

rowType - Row type

input - Input relational expression

projects - List of expressions for the input columns

of

public static MutableRel of(MutableRel input,
                            List<RexNode> exprList,
                            List<String> fieldNameList)

Creates a MutableProject.

Parameters:

input - Input relational expression

exprList - List of expressions for the input columns

fieldNameList - Aliases of the expressions, or null to generate

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

digest

public StringBuilder digest(StringBuilder buf)

Specified by:

digest in class MutableRel

getNamedProjects

public final List<Pair<RexNode,String>> getNamedProjects()

Returns a list of (expression, name) pairs.

getMapping

public Mappings.TargetMapping getMapping()

clone

public MutableRel clone()

Specified by:

clone in class MutableRel