org.apache.calcite.plan

Class MaterializedViewSubstitutionVisitor

java.lang.Object

org.apache.calcite.plan.SubstitutionVisitor

org.apache.calcite.plan.MaterializedViewSubstitutionVisitor

public class MaterializedViewSubstitutionVisitor
extends SubstitutionVisitor

Extension to SubstitutionVisitor.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	MaterializedViewSubstitutionVisitor.FilterToFilterUnifyRule1 Implementation of SubstitutionVisitor.UnifyRule that matches a MutableFilter to a MutableFilter where the condition of the target relation is weaker.
private static class	MaterializedViewSubstitutionVisitor.FilterToProjectUnifyRule1 Implementation of SubstitutionVisitor.UnifyRule that matches a MutableFilter to a MutableProject on top of a MutableFilter where the condition of the target relation is weaker.
private static class	MaterializedViewSubstitutionVisitor.ProjectToProjectUnifyRule1 Implementation of SubstitutionVisitor.UnifyRule that matches a MutableProject to a MutableProject where the condition of the target relation is weaker.

Nested classes/interfaces inherited from class org.apache.calcite.plan.SubstitutionVisitor

SubstitutionVisitor.AbstractUnifyRule, SubstitutionVisitor.FilterOnProjectRule, SubstitutionVisitor.MatchFailed, SubstitutionVisitor.Operand, SubstitutionVisitor.Replacement, SubstitutionVisitor.UnifyResult, SubstitutionVisitor.UnifyRule, SubstitutionVisitor.UnifyRuleCall

Field Summary

Fields

Modifier and Type	Field and Description
private static com.google.common.collect.ImmutableList<SubstitutionVisitor.UnifyRule>	EXTENDED_RULES

Fields inherited from class org.apache.calcite.plan.SubstitutionVisitor

DEFAULT_RULES, equivalents, queryLeaves, relBuilder, replacementMap, slots, targetLeaves

Constructor Summary

Constructors

Constructor and Description
MaterializedViewSubstitutionVisitor(RelNode target_, RelNode query_)
MaterializedViewSubstitutionVisitor(RelNode target_, RelNode query_, RelBuilderFactory relBuilderFactory)

Method Summary

Modifier and Type	Method and Description
List<RelNode>	go(RelNode replacement_) Returns a list of all possible rels that result from substituting the matched RelNode with the replacement RelNode within the query.
private static List<RexNode>	transformRex(List<RexNode> nodes, List<RelDataTypeField> oldFields, List<RelDataTypeField> newFields)
private static RexNode	transformRex(RexNode node, List<RelDataTypeField> oldFields, List<RelDataTypeField> newFields)

Methods inherited from class org.apache.calcite.plan.SubstitutionVisitor

equalType, getRexShuttle, getRollup, go0, isWeaker, mayBeSatisfiable, permute, register, replace, splitFilter, unifyAggregates

Methods inherited from class java.lang.Object

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

Field Detail

EXTENDED_RULES

private static final com.google.common.collect.ImmutableList<SubstitutionVisitor.UnifyRule> EXTENDED_RULES

Constructor Detail

MaterializedViewSubstitutionVisitor

public MaterializedViewSubstitutionVisitor(RelNode target_,
                                           RelNode query_)

MaterializedViewSubstitutionVisitor

public MaterializedViewSubstitutionVisitor(RelNode target_,
                                           RelNode query_,
                                           RelBuilderFactory relBuilderFactory)

Method Detail

go

public List<RelNode> go(RelNode replacement_)

Description copied from class: SubstitutionVisitor

Returns a list of all possible rels that result from substituting the matched RelNode with the replacement RelNode within the query.

For example, the substitution result of A join B, while A and B are both a qualified match for replacement R, is R join B, R join R, A join R.

Overrides:

go in class SubstitutionVisitor

transformRex

private static RexNode transformRex(RexNode node,
                                    List<RelDataTypeField> oldFields,
                                    List<RelDataTypeField> newFields)

transformRex

private static List<RexNode> transformRex(List<RexNode> nodes,
                                          List<RelDataTypeField> oldFields,
                                          List<RelDataTypeField> newFields)