Package org.apache.calcite.rex

Class RexCopier

java.lang.Object

org.apache.calcite.rex.RexShuttle

org.apache.calcite.rex.RexCopier

All Implemented Interfaces:

RexVisitor<RexNode>

class RexCopier
extends RexShuttle

Shuttle which creates a deep copy of a Rex expression.

This is useful when copying objects from one type factory or builder to another.

Due to the laziness of the author, not all Rex types are supported at present.

See Also:

RexBuilder.copy(RexNode)

Field Summary

Fields

Modifier and Type	Field	Description
private RexBuilder	builder

Constructor Summary

Constructors

Constructor	Description
RexCopier(RexBuilder builder)	Creates a RexCopier.

Method Summary

Modifier and Type	Method	Description
private RelDataType	copy(RelDataType type)
RexNode	visitCall(RexCall call)
RexNode	visitCorrelVariable(RexCorrelVariable variable)
RexNode	visitDynamicParam(RexDynamicParam dynamicParam)
RexNode	visitFieldAccess(RexFieldAccess fieldAccess)
RexNode	visitInputRef(RexInputRef inputRef)
RexNode	visitLiteral(RexLiteral literal)
RexNode	visitLocalRef(RexLocalRef localRef)
RexNode	visitOver(RexOver over)
RexNode	visitRangeRef(RexRangeRef rangeRef)
RexWindow	visitWindow(RexWindow window)

Methods inherited from class org.apache.calcite.rex.RexShuttle

apply, apply, apply, mutate, visitArray, visitFieldCollations, visitList, visitList, visitPatternFieldRef, visitSubQuery, visitTableInputRef

Methods inherited from class java.lang.Object

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

Field Detail

builder

private final RexBuilder builder

Constructor Detail

RexCopier

RexCopier(RexBuilder builder)

Creates a RexCopier.

Parameters:

builder - Builder

Method Detail

copy

private RelDataType copy(RelDataType type)

visitOver

public RexNode visitOver(RexOver over)

Specified by:

visitOver in interface RexVisitor<RexNode>

Overrides:

visitOver in class RexShuttle

visitWindow

public RexWindow visitWindow(RexWindow window)

Overrides:

visitWindow in class RexShuttle

visitCall

public RexNode visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<RexNode>

Overrides:

visitCall in class RexShuttle

visitCorrelVariable

public RexNode visitCorrelVariable(RexCorrelVariable variable)

Specified by:

visitCorrelVariable in interface RexVisitor<RexNode>

Overrides:

visitCorrelVariable in class RexShuttle

visitFieldAccess

public RexNode visitFieldAccess(RexFieldAccess fieldAccess)

Specified by:

visitFieldAccess in interface RexVisitor<RexNode>

Overrides:

visitFieldAccess in class RexShuttle

visitInputRef

public RexNode visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<RexNode>

Overrides:

visitInputRef in class RexShuttle

visitLocalRef

public RexNode visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<RexNode>

Overrides:

visitLocalRef in class RexShuttle

visitLiteral

public RexNode visitLiteral(RexLiteral literal)

Specified by:

visitLiteral in interface RexVisitor<RexNode>

Overrides:

visitLiteral in class RexShuttle

visitDynamicParam

public RexNode visitDynamicParam(RexDynamicParam dynamicParam)

Specified by:

visitDynamicParam in interface RexVisitor<RexNode>

Overrides:

visitDynamicParam in class RexShuttle

visitRangeRef

public RexNode visitRangeRef(RexRangeRef rangeRef)

Specified by:

visitRangeRef in interface RexVisitor<RexNode>

Overrides:

visitRangeRef in class RexShuttle