org.apache.calcite.rex

Class RexOver

java.lang.Object

org.apache.calcite.rex.RexNode

org.apache.calcite.rex.RexCall

org.apache.calcite.rex.RexOver

public class RexOver
extends RexCall

Call to an aggregate function over a window.

Field Summary

Fields inherited from class org.apache.calcite.rex.RexCall

operands

Fields inherited from class org.apache.calcite.rex.RexNode

digest

Method Summary

Methods

Modifier and Type	Method and Description
<R> R	accept(RexVisitor<R> visitor) Accepts a visitor, dispatching to the right overloaded visitXxx method.
RexCall	clone(RelDataType type, List<RexNode> operands) Creates a new call to the same operator with different operands.
protected String	computeDigest(boolean withType)
static boolean	containsOver(List<RexNode> exprs, RexNode condition) Returns whether an expression list contains an OVER clause.
static boolean	containsOver(RexNode expr) Returns whether an expression contains an OVER clause.
static boolean	containsOver(RexProgram program) Returns whether a program contains an OVER clause.
SqlAggFunction	getAggOperator() Returns the aggregate operator for this expression.
RexWindow	getWindow()

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

getKind, getOperands, getOperator, getType, isAlwaysFalse, isAlwaysTrue, toString

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

isA, isA

Methods inherited from class java.lang.Object

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

Method Detail

getAggOperator

public SqlAggFunction getAggOperator()

Returns the aggregate operator for this expression.

getWindow

public RexWindow getWindow()

computeDigest

protected String computeDigest(boolean withType)

Overrides:

computeDigest in class RexCall

accept

public <R> R accept(RexVisitor<R> visitor)

Description copied from class: RexNode

Accepts a visitor, dispatching to the right overloaded visitXxx method.

Also see RexUtil.apply(RexVisitor, java.util.List, RexNode), which applies a visitor to several expressions simultaneously.

Overrides:

accept in class RexCall

containsOver

public static boolean containsOver(RexNode expr)

Returns whether an expression contains an OVER clause.

containsOver

public static boolean containsOver(RexProgram program)

Returns whether a program contains an OVER clause.

containsOver

public static boolean containsOver(List<RexNode> exprs,
                   RexNode condition)

Returns whether an expression list contains an OVER clause.

clone

public RexCall clone(RelDataType type,
            List<RexNode> operands)

Description copied from class: RexCall

Creates a new call to the same operator with different operands.

Overrides:

clone in class RexCall

Parameters:

type - Return type

operands - Operands to call

Returns:

New call