TableColumn.MetadataColumn (Flink : Table : Common 2.1.0 API)

java.lang.Object
- org.apache.flink.table.legacy.api.TableColumn
- - org.apache.flink.table.legacy.api.TableColumn.MetadataColumn

Enclosing class:: TableColumn

@Internal
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.legacy.api.TableColumn
  TableColumn.ComputedColumn, TableColumn.MetadataColumn, TableColumn.PhysicalColumn

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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.legacy.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