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()
Boolean	isVisibleInExplain(RelNode rel, RelMetadataQuery mq, SqlExplainLevel explainLevel) Catch-all implementation for BuiltInMetadata.ExplainVisibility.isVisibleInExplain(SqlExplainLevel), invoked using reflection.

Methods inherited from class java.lang.Object

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

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 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)