Package org.apache.calcite.rel.core

Class Match

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Match

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

Direct Known Subclasses:

Bindables.BindableMatch, EnumerableMatch, LogicalMatch

public abstract class Match
extends SingleRel

Relational expression that represent a MATCH_RECOGNIZE node.

Each output row has the columns defined in the measure statements.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Match.RexMRAggCall	Aggregate calls in match recognize.

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field	Description
protected final RexNode	after
protected final Set<Match.RexMRAggCall>	aggregateCalls
protected final Map<String,SortedSet<Match.RexMRAggCall>>	aggregateCallsPreVar
protected final boolean	allRows
protected final @Nullable RexNode	interval
protected final com.google.common.collect.ImmutableMap<String,RexNode>	measures
protected final RelCollation	orderKeys
protected final ImmutableBitSet	partitionKeys
protected final RexNode	pattern
protected final com.google.common.collect.ImmutableMap<String,RexNode>	patternDefinitions
protected final boolean	strictEnd
protected final boolean	strictStart
protected final com.google.common.collect.ImmutableMap<String,SortedSet<String>>	subsets

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

Modifier	Constructor	Description
protected	Match(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, RelDataType rowType, RexNode pattern, boolean strictStart, boolean strictEnd, Map<String,RexNode> patternDefinitions, Map<String,RexNode> measures, RexNode after, Map<String,? extends SortedSet<String>> subsets, boolean allRows, ImmutableBitSet partitionKeys, RelCollation orderKeys, @Nullable RexNode interval)	Creates a Match.

Method Summary

Modifier and Type	Method	Description
RelWriter	explainTerms(RelWriter pw)	Describes the inputs and attributes of this relational expression.
RexNode	getAfter()
@Nullable RexNode	getInterval()
com.google.common.collect.ImmutableMap<String,RexNode>	getMeasures()
RelCollation	getOrderKeys()
ImmutableBitSet	getPartitionKeys()
RexNode	getPattern()
com.google.common.collect.ImmutableMap<String,RexNode>	getPatternDefinitions()
com.google.common.collect.ImmutableMap<String,SortedSet<String>>	getSubsets()
boolean	isAllRows()
boolean	isStrictEnd()
boolean	isStrictStart()

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, computeSelfCost, copy, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, 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.RelNode

explain, fieldIsNullable, stripped

Field Details

measures

protected final com.google.common.collect.ImmutableMap<String,RexNode> measures

pattern

protected final RexNode pattern

strictStart

protected final boolean strictStart

strictEnd

protected final boolean strictEnd

allRows

protected final boolean allRows

after

protected final RexNode after

patternDefinitions

protected final com.google.common.collect.ImmutableMap<String,RexNode> patternDefinitions

aggregateCalls

protected final Set<Match.RexMRAggCall> aggregateCalls

aggregateCallsPreVar

protected final Map<String,SortedSet<Match.RexMRAggCall>> aggregateCallsPreVar

subsets

protected final com.google.common.collect.ImmutableMap<String,SortedSet<String>> subsets

partitionKeys

protected final ImmutableBitSet partitionKeys

orderKeys

protected final RelCollation orderKeys

interval

protected final @Nullable RexNode interval

Constructor Details

Match

protected Match(RelOptCluster cluster,
 RelTraitSet traitSet,
 RelNode input,
 RelDataType rowType,
 RexNode pattern,
 boolean strictStart,
 boolean strictEnd,
 Map<String,RexNode> patternDefinitions,
 Map<String,RexNode> measures,
 RexNode after,
 Map<String,? extends SortedSet<String>> subsets,
 boolean allRows,
 ImmutableBitSet partitionKeys,
 RelCollation orderKeys,
 @Nullable RexNode interval)

Creates a Match.

Parameters:

cluster - Cluster

traitSet - Trait set

input - Input relational expression

rowType - Row type

pattern - Regular expression that defines pattern variables

strictStart - Whether it is a strict start pattern

strictEnd - Whether it is a strict end pattern

patternDefinitions - Pattern definitions

measures - Measure definitions

after - After match definitions

subsets - Subsets of pattern variables

allRows - Whether all rows per match (false means one row per match)

partitionKeys - Partition by columns

orderKeys - Order by columns

interval - Interval definition, null if WITHIN clause is not defined

Method Details

getMeasures

public com.google.common.collect.ImmutableMap<String,RexNode> getMeasures()

getAfter

public RexNode getAfter()

getPattern

public RexNode getPattern()

isStrictStart

public boolean isStrictStart()

isStrictEnd

public boolean isStrictEnd()

isAllRows

public boolean isAllRows()

getPatternDefinitions

public com.google.common.collect.ImmutableMap<String,RexNode> getPatternDefinitions()

getSubsets

public com.google.common.collect.ImmutableMap<String,SortedSet<String>> getSubsets()

getPartitionKeys

public ImmutableBitSet getPartitionKeys()

getOrderKeys

public RelCollation getOrderKeys()

getInterval

public @Nullable RexNode getInterval()

explainTerms

public RelWriter explainTerms(RelWriter pw)

Description copied from class: AbstractRelNode

Describes the inputs and attributes of this relational expression. Each node should call super.explainTerms, then call the RelWriter.input(String, RelNode) and RelWriter.item(String, Object) methods for each input and attribute.

Overrides:

explainTerms in class SingleRel

Parameters:

pw - Plan writer

Returns:

Plan writer for fluent-explain pattern