Package org.apache.calcite.rel.logical

Class LogicalWindow

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Window

org.apache.calcite.rel.logical.LogicalWindow

All Implemented Interfaces:

Cloneable, RelOptNode, Hintable, RelNode

public final class LogicalWindow
extends Window

Sub-class of Window not targeted at any particular engine or calling convention.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.core.Window

Window.Group, Window.RexWinAggCall

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

RelNode.Context

Field Summary

Fields inherited from class org.apache.calcite.rel.core.Window

constants, groups, hints

Fields inherited from class org.apache.calcite.rel.SingleRel

input

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor	Description
LogicalWindow(RelOptCluster cluster, RelTraitSet traitSet, List<RelHint> hints, RelNode input, List<RexLiteral> constants, RelDataType rowType, List<Window.Group> groups)	Creates a LogicalWindow.
LogicalWindow(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, List<RexLiteral> constants, RelDataType rowType, List<Window.Group> groups)	Creates a LogicalWindow.

Method Summary

Modifier and Type	Method	Description
Window	copy(List<RexLiteral> constants)	Creates a copy of this Window.
LogicalWindow	copy(RelTraitSet traitSet, List<RelNode> inputs)	Creates a copy of this relational expression, perhaps changing traits and inputs.
static RelNode	create(RelOptCluster cluster, RelTraitSet traitSet, RelBuilder relBuilder, RelNode child, RexProgram program)	Creates a LogicalWindow by parsing a RexProgram.
static LogicalWindow	create(RelTraitSet traitSet, RelNode input, List<RexLiteral> constants, RelDataType rowType, List<Window.Group> groups)	Creates a LogicalWindow.
RelNode	withHints(List<RelHint> hintList)	Returns a new relational expression with the specified hints hintList.

Methods inherited from class org.apache.calcite.rel.core.Window

computeSelfCost, explainTerms, getCollation, getConstants, getHints, getProjectOrdinals, isValid

Methods inherited from class org.apache.calcite.rel.SingleRel

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, accept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.hint.Hintable

attachHints

Methods inherited from interface org.apache.calcite.rel.RelNode

explain, fieldIsNullable, stripped

Constructor Details

LogicalWindow

public LogicalWindow(RelOptCluster cluster,
 RelTraitSet traitSet,
 List<RelHint> hints,
 RelNode input,
 List<RexLiteral> constants,
 RelDataType rowType,
 List<Window.Group> groups)

Creates a LogicalWindow.

Use create(org.apache.calcite.plan.RelTraitSet, org.apache.calcite.rel.RelNode, java.util.List<org.apache.calcite.rex.RexLiteral>, org.apache.calcite.rel.type.RelDataType, java.util.List<org.apache.calcite.rel.core.Window.Group>) unless you know what you're doing.

Parameters:

cluster - Cluster

traitSet - Trait set

hints - Hints for this node

input - Input relational expression

constants - List of constants that are additional inputs

rowType - Output row type

groups - Window groups

LogicalWindow

public LogicalWindow(RelOptCluster cluster,
 RelTraitSet traitSet,
 RelNode input,
 List<RexLiteral> constants,
 RelDataType rowType,
 List<Window.Group> groups)

Creates a LogicalWindow.

Use create(org.apache.calcite.plan.RelTraitSet, org.apache.calcite.rel.RelNode, java.util.List<org.apache.calcite.rex.RexLiteral>, org.apache.calcite.rel.type.RelDataType, java.util.List<org.apache.calcite.rel.core.Window.Group>) unless you know what you're doing.

Parameters:

cluster - Cluster

traitSet - Trait set

input - Input relational expression

constants - List of constants that are additional inputs

rowType - Output row type

groups - Window groups

Method Details

copy

public LogicalWindow copy(RelTraitSet traitSet,
 List<RelNode> inputs)

Description copied from interface: RelNode

Creates a copy of this relational expression, perhaps changing traits and inputs.

Sub-classes with other important attributes are encouraged to create variants of this method with more parameters.

Specified by:

copy in interface RelNode

Overrides:

copy in class AbstractRelNode

Parameters:

traitSet - Trait set

inputs - Inputs

Returns:

Copy of this relational expression, substituting traits and inputs

copy

public Window copy(List<RexLiteral> constants)

Description copied from class: Window

Creates a copy of this Window.

Specified by:

copy in class Window

Parameters:

constants - Replaces the list of constants in the returned copy

Returns:

New Window

create

public static LogicalWindow create(RelTraitSet traitSet,
 RelNode input,
 List<RexLiteral> constants,
 RelDataType rowType,
 List<Window.Group> groups)

Creates a LogicalWindow.

Parameters:

traitSet - Trait set

input - Input relational expression

constants - List of constants that are additional inputs

rowType - Output row type

groups - Window groups

create

public static RelNode create(RelOptCluster cluster,
 RelTraitSet traitSet,
 RelBuilder relBuilder,
 RelNode child,
 RexProgram program)

Creates a LogicalWindow by parsing a RexProgram.

withHints

public RelNode withHints(List<RelHint> hintList)

Description copied from interface: Hintable

Returns a new relational expression with the specified hints hintList.

This method should be overridden by every logical node that supports hint. It is only for internal use during decorrelation.

Sub-class should return a new copy of the relational expression.

The default implementation returns the relational expression directly only because not every kind of relational expression supports hints.

Returns:

Relational expression with set up hints