Package org.apache.calcite.adapter.enumerable

Class EnumerableWindow

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Window

org.apache.calcite.adapter.enumerable.EnumerableWindow

All Implemented Interfaces:

java.lang.Cloneable, EnumerableRel, RelOptNode, RelNode

public class EnumerableWindow
extends Window
implements EnumerableRel

Implementation of Window in enumerable calling convention.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	EnumerableWindow.WindowRelInputGetter	Implementation of RexToLixTranslator.InputGetter suitable for generating implementations of windowed aggregate functions.

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.adapter.enumerable.EnumerableRel

EnumerableRel.Prefer, EnumerableRel.Result

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

Fields inherited from interface org.apache.calcite.adapter.enumerable.EnumerableRel

FILTER_FACTORY, PROJECT_FACTORY

Constructor Summary

Constructors

Constructor	Description
EnumerableWindow(RelOptCluster cluster, RelTraitSet traits, RelNode child, java.util.List<RexLiteral> constants, RelDataType rowType, java.util.List<Window.Group> groups)	Creates an EnumerableWindowRel.

Method Summary

Modifier and Type	Method	Description
RelOptCost	computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq)	Returns the cost of this plan (not including children).
RelNode	copy(RelTraitSet traitSet, java.util.List<RelNode> inputs)	Creates a copy of this relational expression, perhaps changing traits and inputs.
private void	declareAndResetState(JavaTypeFactory typeFactory, BlockBuilder builder, EnumerableRel.Result result, int windowIdx, java.util.List<AggImpState> aggs, PhysType outputPhysType, java.util.List<Expression> outputRow)
private java.util.function.Function<BlockBuilder,WinAggFrameResultContext>	getBlockBuilderWinAggFrameResultContextFunction(JavaTypeFactory typeFactory, SqlConformance conformance, EnumerableRel.Result result, java.util.List<Expression> translatedConstants, Expression comparator_, Expression rows_, ParameterExpression i_, Expression startX, Expression endX, Expression minX, Expression maxX, Expression hasRows, Expression frameRowCount, Expression partitionRowCount, DeclarationStatement jDecl, PhysType inputPhysType)
private Pair<Expression,Expression>	getPartitionIterator(BlockBuilder builder, Expression source_, PhysType inputPhysType, Window.Group group, Expression comparator_)
private Pair<Expression,Expression>	getRowCollationKey(BlockBuilder builder, PhysType inputPhysType, Window.Group group, int windowIdx)
EnumerableRel.Result	implement(EnumerableRelImplementor implementor, EnumerableRel.Prefer pref)	Creates a plan for this expression according to a calling convention.
private void	implementAdd(java.util.List<AggImpState> aggs, BlockBuilder builder7, java.util.function.Function<BlockBuilder,WinAggFrameResultContext> frame, java.util.function.Function<AggImpState,java.util.List<RexNode>> rexArguments, DeclarationStatement jDecl)
private boolean	implementResult(java.util.List<AggImpState> aggs, BlockBuilder builder, java.util.function.Function<BlockBuilder,WinAggFrameResultContext> frame, java.util.function.Function<AggImpState,java.util.List<RexNode>> rexArguments, boolean cachedBlock)
private void	sampleOfTheGeneratedWindowedAggregate()
private Expression	translateBound(RexToLixTranslator translator, ParameterExpression i_, Expression row_, Expression min_, Expression max_, Expression rows_, Window.Group group, boolean lower, PhysType physType, Expression rowComparator, Expression keySelector, Expression keyComparator)

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

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

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, estimateRowCount, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

Methods inherited from interface org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

EnumerableWindow

EnumerableWindow(RelOptCluster cluster,
                 RelTraitSet traits,
                 RelNode child,
                 java.util.List<RexLiteral> constants,
                 RelDataType rowType,
                 java.util.List<Window.Group> groups)

Creates an EnumerableWindowRel.

Method Detail

copy

public RelNode copy(RelTraitSet traitSet,
                    java.util.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

computeSelfCost

public RelOptCost computeSelfCost(RelOptPlanner planner,
                                  RelMetadataQuery mq)

Description copied from interface: RelNode

Returns the cost of this plan (not including children). The base implementation throws an error; derived classes should override.

NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use RelMetadataQuery.getNonCumulativeCost(org.apache.calcite.rel.RelNode), which gives plugins a chance to override the rel's default ideas about cost.

Specified by:

computeSelfCost in interface RelNode

Overrides:

computeSelfCost in class Window

Parameters:

planner - Planner for cost calculation

mq - Metadata query

Returns:

Cost of this plan (not including children)

sampleOfTheGeneratedWindowedAggregate

private void sampleOfTheGeneratedWindowedAggregate()

implement

public EnumerableRel.Result implement(EnumerableRelImplementor implementor,
                                      EnumerableRel.Prefer pref)

Description copied from interface: EnumerableRel

Creates a plan for this expression according to a calling convention.

Specified by:

implement in interface EnumerableRel

Parameters:

implementor - Implementor

pref - Preferred representation for rows in result expression

Returns:

Plan for this expression according to a calling convention

getBlockBuilderWinAggFrameResultContextFunction

private java.util.function.Function<BlockBuilder,WinAggFrameResultContext> getBlockBuilderWinAggFrameResultContextFunction(JavaTypeFactory typeFactory,
                                                                                                                                 SqlConformance conformance,
                                                                                                                                 EnumerableRel.Result result,
                                                                                                                                 java.util.List<Expression> translatedConstants,
                                                                                                                                 Expression comparator_,
                                                                                                                                 Expression rows_,
                                                                                                                                 ParameterExpression i_,
                                                                                                                                 Expression startX,
                                                                                                                                 Expression endX,
                                                                                                                                 Expression minX,
                                                                                                                                 Expression maxX,
                                                                                                                                 Expression hasRows,
                                                                                                                                 Expression frameRowCount,
                                                                                                                                 Expression partitionRowCount,
                                                                                                                                 DeclarationStatement jDecl,
                                                                                                                                 PhysType inputPhysType)

getPartitionIterator

private Pair<Expression,Expression> getPartitionIterator(BlockBuilder builder,
                                                               Expression source_,
                                                               PhysType inputPhysType,
                                                               Window.Group group,
                                                               Expression comparator_)

getRowCollationKey

private Pair<Expression,Expression> getRowCollationKey(BlockBuilder builder,
                                                             PhysType inputPhysType,
                                                             Window.Group group,
                                                             int windowIdx)

declareAndResetState

private void declareAndResetState(JavaTypeFactory typeFactory,
                                  BlockBuilder builder,
                                  EnumerableRel.Result result,
                                  int windowIdx,
                                  java.util.List<AggImpState> aggs,
                                  PhysType outputPhysType,
                                  java.util.List<Expression> outputRow)

implementAdd

private void implementAdd(java.util.List<AggImpState> aggs,
                          BlockBuilder builder7,
                          java.util.function.Function<BlockBuilder,WinAggFrameResultContext> frame,
                          java.util.function.Function<AggImpState,java.util.List<RexNode>> rexArguments,
                          DeclarationStatement jDecl)

implementResult

private boolean implementResult(java.util.List<AggImpState> aggs,
                                BlockBuilder builder,
                                java.util.function.Function<BlockBuilder,WinAggFrameResultContext> frame,
                                java.util.function.Function<AggImpState,java.util.List<RexNode>> rexArguments,
                                boolean cachedBlock)

translateBound

private Expression translateBound(RexToLixTranslator translator,
                                  ParameterExpression i_,
                                  Expression row_,
                                  Expression min_,
                                  Expression max_,
                                  Expression rows_,
                                  Window.Group group,
                                  boolean lower,
                                  PhysType physType,
                                  Expression rowComparator,
                                  Expression keySelector,
                                  Expression keyComparator)