Package org.apache.calcite.rex

Class RexWindowBounds

java.lang.Object

org.apache.calcite.rex.RexWindowBounds

public final class RexWindowBounds
extends Object

Helpers for RexWindowBound.

Field Summary

Fields

Modifier and Type	Field	Description
static final RexWindowBound	CURRENT_ROW	CURRENT ROW.
static final RexWindowBound	UNBOUNDED_FOLLOWING	UNBOUNDED FOLLOWING.
static final RexWindowBound	UNBOUNDED_PRECEDING	UNBOUNDED PRECEDING.

Method Summary

Modifier and Type	Method	Description
static RexWindowBound	create(SqlNode node, @Nullable RexNode rexNode)	Creates a window bound from a SqlNode.
static RexWindowBound	following(RexNode offset)
static RexWindowBound	preceding(RexNode offset)

Methods inherited from class java.lang.Object

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

Field Details

UNBOUNDED_PRECEDING

public static final RexWindowBound UNBOUNDED_PRECEDING

UNBOUNDED PRECEDING.

UNBOUNDED_FOLLOWING

public static final RexWindowBound UNBOUNDED_FOLLOWING

UNBOUNDED FOLLOWING.

CURRENT_ROW

public static final RexWindowBound CURRENT_ROW

CURRENT ROW.

Method Details

create

public static RexWindowBound create(SqlNode node,
 @Nullable RexNode rexNode)

Creates a window bound from a SqlNode.

Parameters:

node - SqlNode of the bound

rexNode - offset value when bound is not UNBOUNDED/CURRENT ROW

Returns:

window bound

following

public static RexWindowBound following(RexNode offset)

preceding

public static RexWindowBound preceding(RexNode offset)