org.apache.calcite.rel.logical

Class LogicalFilter

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Filter

org.apache.calcite.rel.logical.LogicalFilter

All Implemented Interfaces:

Cloneable, RelOptNode, RelNode

public final class LogicalFilter
extends Filter

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

Nested Class Summary

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field and Description
private com.google.common.collect.ImmutableSet<CorrelationId>	variablesSet

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

condition

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
LogicalFilter(RelInput input) Creates a LogicalFilter by parsing serialized output.
LogicalFilter(RelOptCluster cluster, RelNode child, RexNode condition) Deprecated.
LogicalFilter(RelOptCluster cluster, RelTraitSet traitSet, RelNode child, RexNode condition) Deprecated.
LogicalFilter(RelOptCluster cluster, RelTraitSet traitSet, RelNode child, RexNode condition, com.google.common.collect.ImmutableSet<CorrelationId> variablesSet) Creates a LogicalFilter.

Method Summary

Modifier and Type	Method and Description
RelNode	accept(RelShuttle shuttle) Accepts a visit from a shuttle.
LogicalFilter	copy(RelTraitSet traitSet, RelNode input, RexNode condition)
static LogicalFilter	create(RelNode input, RexNode condition) Creates a LogicalFilter.
static LogicalFilter	create(RelNode input, RexNode condition, com.google.common.collect.ImmutableSet<CorrelationId> variablesSet) Creates a LogicalFilter.
RelWriter	explainTerms(RelWriter pw) Describes the inputs and attributes of this relational expression.
Set<CorrelationId>	getVariablesSet() Returns the variables that are set in this relational expression but also used and therefore not available to parents of this relational expression.

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

accept, computeSelfCost, copy, estimateFilteredRows, estimateFilteredRows, estimateRowCount, getChildExps, getCondition, isValid

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

childrenAccept, deriveRowType, getInput, getInputs, replaceInput

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

collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, explain, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, 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

Field Detail

variablesSet

private final com.google.common.collect.ImmutableSet<CorrelationId> variablesSet

Constructor Detail

LogicalFilter

public LogicalFilter(RelOptCluster cluster,
                     RelTraitSet traitSet,
                     RelNode child,
                     RexNode condition,
                     com.google.common.collect.ImmutableSet<CorrelationId> variablesSet)

Creates a LogicalFilter.

Use create(org.apache.calcite.rel.RelNode, org.apache.calcite.rex.RexNode) unless you know what you're doing.

Parameters:

cluster - Cluster that this relational expression belongs to

child - Input relational expression

condition - Boolean expression which determines whether a row is allowed to pass

variablesSet - Correlation variables set by this relational expression to be used by nested expressions

LogicalFilter

@Deprecated
public LogicalFilter(RelOptCluster cluster,
                                 RelTraitSet traitSet,
                                 RelNode child,
                                 RexNode condition)

Deprecated.

LogicalFilter

@Deprecated
public LogicalFilter(RelOptCluster cluster,
                                 RelNode child,
                                 RexNode condition)

Deprecated.

LogicalFilter

public LogicalFilter(RelInput input)

Creates a LogicalFilter by parsing serialized output.

Method Detail

create

public static LogicalFilter create(RelNode input,
                                   RexNode condition)

Creates a LogicalFilter.

create

public static LogicalFilter create(RelNode input,
                                   RexNode condition,
                                   com.google.common.collect.ImmutableSet<CorrelationId> variablesSet)

Creates a LogicalFilter.

getVariablesSet

public Set<CorrelationId> getVariablesSet()

Description copied from interface: RelNode

Returns the variables that are set in this relational expression but also used and therefore not available to parents of this relational expression.

Note: only Correlate should set variables.

Specified by:

getVariablesSet in interface RelNode

Overrides:

getVariablesSet in class AbstractRelNode

Returns:

Names of variables which are set in this relational expression

copy

public LogicalFilter copy(RelTraitSet traitSet,
                          RelNode input,
                          RexNode condition)

Specified by:

copy in class Filter

accept

public RelNode accept(RelShuttle shuttle)

Description copied from interface: RelNode

Accepts a visit from a shuttle.

Specified by:

accept in interface RelNode

Overrides:

accept in class AbstractRelNode

Parameters:

shuttle - Shuttle

Returns:

A copy of this node incorporating changes made by the shuttle to this node's children

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 RelWriterImpl.input(String, RelNode) and RelWriterImpl.item(String, Object) methods for each input and attribute.

Overrides:

explainTerms in class Filter

Parameters:

pw - Plan writer

Returns:

Plan writer for fluent-explain pattern