org.apache.flink.table.api

Class TableColumn.MetadataColumn

java.lang.Object

org.apache.flink.table.api.TableColumn

org.apache.flink.table.api.TableColumn.MetadataColumn

Enclosing class:

TableColumn

@PublicEvolving
public static class TableColumn.MetadataColumn
extends TableColumn

Representation of a metadata column.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.api.TableColumn

TableColumn.ComputedColumn, TableColumn.MetadataColumn, TableColumn.PhysicalColumn

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Optional<String>	explainExtras() Returns an explanation of specific column extras next to name and type.
Optional<String>	getMetadataAlias()
int	hashCode()
boolean	isPersisted() Returns whether the given column is persisted in a sink operation.
boolean	isPhysical() Returns whether the given column is a physical column of a table; neither computed nor metadata.
boolean	isVirtual()

Methods inherited from class org.apache.flink.table.api.TableColumn

asSummaryString, computed, getName, getType, metadata, metadata, metadata, metadata, of, of, physical, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

isVirtual

public boolean isVirtual()

getMetadataAlias

public Optional<String> getMetadataAlias()

isPhysical

public boolean isPhysical()

Description copied from class: TableColumn

Returns whether the given column is a physical column of a table; neither computed nor metadata.

Specified by:

isPhysical in class TableColumn

isPersisted

public boolean isPersisted()

Description copied from class: TableColumn

Returns whether the given column is persisted in a sink operation.

Specified by:

isPersisted in class TableColumn

explainExtras

public Optional<String> explainExtras()

Description copied from class: TableColumn

Returns an explanation of specific column extras next to name and type.

Specified by:

explainExtras in class TableColumn

equals

public boolean equals(Object o)

Overrides:

equals in class TableColumn

hashCode

public int hashCode()

Overrides:

hashCode in class TableColumn