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, 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

Modifier and Type	Class and Description
private static class	LogicalWindow.WindowKey Group specification.

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

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 and Description
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 and Description
private static void	addWindows(com.google.common.collect.Multimap<LogicalWindow.WindowKey,RexOver> windowMap, RexOver over, int inputFieldCount)
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.
private static List<RexNode>	toInputRefs(List<? extends RexNode> operands)

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

computeSelfCost, explainTerms, getCollation, getConstants, 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, computeDigest, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

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 Detail

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

create

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

Creates a LogicalWindow.

Parameters:

input - Input relational expression

traitSet - Trait set

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.

toInputRefs

private static List<RexNode> toInputRefs(List<? extends RexNode> operands)

addWindows

private static void addWindows(com.google.common.collect.Multimap<LogicalWindow.WindowKey,RexOver> windowMap,
                               RexOver over,
                               int inputFieldCount)