org.apache.calcite.rel.metadata

Class RelMdExplainVisibility

java.lang.Object

org.apache.calcite.rel.metadata.RelMdExplainVisibility

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.ExplainVisibility>

public class RelMdExplainVisibility
extends Object
implements MetadataHandler<BuiltInMetadata.ExplainVisibility>

RelMdExplainVisibility supplies a default implementation of RelMetadataQuery.isVisibleInExplain(org.apache.calcite.rel.RelNode, org.apache.calcite.sql.SqlExplainLevel) for the standard logical algebra.

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE

Method Summary

Modifier and Type	Method and Description
MetadataDef<BuiltInMetadata.ExplainVisibility>	getDef()
@Nullable Boolean	isVisibleInExplain(RelNode rel, RelMetadataQuery mq, SqlExplainLevel explainLevel) Catch-all implementation for BuiltInMetadata.ExplainVisibility.isVisibleInExplain(SqlExplainLevel), invoked using reflection.
@Nullable Boolean	isVisibleInExplain(TableScan scan, RelMetadataQuery mq, SqlExplainLevel explainLevel)

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

Method Detail

getDef

public MetadataDef<BuiltInMetadata.ExplainVisibility> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.ExplainVisibility>

isVisibleInExplain

public @Nullable Boolean isVisibleInExplain(RelNode rel,
                                            RelMetadataQuery mq,
                                            SqlExplainLevel explainLevel)

Catch-all implementation for BuiltInMetadata.ExplainVisibility.isVisibleInExplain(SqlExplainLevel), invoked using reflection.

See Also:

RelMetadataQuery.isVisibleInExplain(RelNode, SqlExplainLevel)

isVisibleInExplain

public @Nullable Boolean isVisibleInExplain(TableScan scan,
                                            RelMetadataQuery mq,
                                            SqlExplainLevel explainLevel)