org.apache.calcite.rel.metadata

Class RelMdAllPredicates

java.lang.Object

org.apache.calcite.rel.metadata.RelMdAllPredicates

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.AllPredicates>

public class RelMdAllPredicates
extends Object
implements MetadataHandler<BuiltInMetadata.AllPredicates>

Utility to extract Predicates that are present in the (sub)plan starting at this node.

This should be used to infer whether same filters are applied on a given plan by materialized view rewriting rules.

The output predicates might contain references to columns produced by TableScan operators (RexTableInputRef). In turn, each TableScan operator is identified uniquely by its qualified name and an identifier.

If the provider cannot infer the lineage for any of the expressions contain in any of the predicates, it will return null. Observe that this is different from the empty list of predicates, which means that there are not predicates in the (sub)plan.

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Constructor and Description
RelMdAllPredicates()

Method Summary

Modifier and Type	Method and Description
@Nullable RelOptPredicateList	getAllPredicates(Aggregate agg, RelMetadataQuery mq) Extracts predicates for an Aggregate.
@Nullable RelOptPredicateList	getAllPredicates(Calc calc, RelMetadataQuery mq) Extracts predicates for a Calc.
@Nullable RelOptPredicateList	getAllPredicates(Exchange exchange, RelMetadataQuery mq) Extracts predicates for an Exchange.
@Nullable RelOptPredicateList	getAllPredicates(Filter filter, RelMetadataQuery mq) Extracts predicates for a Filter.
@Nullable RelOptPredicateList	getAllPredicates(HepRelVertex rel, RelMetadataQuery mq)
@Nullable RelOptPredicateList	getAllPredicates(Join join, RelMetadataQuery mq) Add the Join condition to the list obtained from the input.
@Nullable RelOptPredicateList	getAllPredicates(Project project, RelMetadataQuery mq) Extracts predicates for a project.
@Nullable RelOptPredicateList	getAllPredicates(RelNode rel, RelMetadataQuery mq) Catch-all implementation for BuiltInMetadata.AllPredicates.getAllPredicates(), invoked using reflection.
@Nullable RelOptPredicateList	getAllPredicates(RelSubset rel, RelMetadataQuery mq)
@Nullable RelOptPredicateList	getAllPredicates(SetOp setOp, RelMetadataQuery mq) Extracts predicates for a SetOp.
@Nullable RelOptPredicateList	getAllPredicates(Sort sort, RelMetadataQuery mq) Extracts predicates for a Sort.
@Nullable RelOptPredicateList	getAllPredicates(TableModify tableModify, RelMetadataQuery mq) Extracts predicates for an TableModify.
@Nullable RelOptPredicateList	getAllPredicates(TableScan scan, RelMetadataQuery mq) Extracts predicates for a table scan.
MetadataDef<BuiltInMetadata.AllPredicates>	getDef()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.metadata.MetadataHandler

handlerMethods

Field Detail

SOURCE

public static final RelMetadataProvider SOURCE

Constructor Detail

RelMdAllPredicates

public RelMdAllPredicates()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.AllPredicates> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.AllPredicates>

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(RelNode rel,
                                                      RelMetadataQuery mq)

Catch-all implementation for BuiltInMetadata.AllPredicates.getAllPredicates(), invoked using reflection.

See Also:

RelMetadataQuery.getAllPredicates(RelNode)

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(HepRelVertex rel,
                                                      RelMetadataQuery mq)

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(RelSubset rel,
                                                      RelMetadataQuery mq)

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(TableScan scan,
                                                      RelMetadataQuery mq)

Extracts predicates for a table scan.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Project project,
                                                      RelMetadataQuery mq)

Extracts predicates for a project.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Filter filter,
                                                      RelMetadataQuery mq)

Extracts predicates for a Filter.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Calc calc,
                                                      RelMetadataQuery mq)

Extracts predicates for a Calc.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Join join,
                                                      RelMetadataQuery mq)

Add the Join condition to the list obtained from the input.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Aggregate agg,
                                                      RelMetadataQuery mq)

Extracts predicates for an Aggregate.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(TableModify tableModify,
                                                      RelMetadataQuery mq)

Extracts predicates for an TableModify.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(SetOp setOp,
                                                      RelMetadataQuery mq)

Extracts predicates for a SetOp.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Sort sort,
                                                      RelMetadataQuery mq)

Extracts predicates for a Sort.

getAllPredicates

public @Nullable RelOptPredicateList getAllPredicates(Exchange exchange,
                                                      RelMetadataQuery mq)

Extracts predicates for an Exchange.