org.apache.flink.table.api

类 TableColumn.ComputedColumn

java.lang.Object

org.apache.flink.table.api.TableColumn

org.apache.flink.table.api.TableColumn.ComputedColumn

封闭类:

TableColumn

public static class TableColumn.ComputedColumn
extends TableColumn

Representation of a computed column.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.table.api.TableColumn

TableColumn.ComputedColumn, TableColumn.MetadataColumn, TableColumn.PhysicalColumn

方法概要

限定符和类型	方法和说明
boolean	equals(Object o)
Optional<String>	explainExtras() Returns an explanation of specific column extras next to name and type.
String	getExpression()
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.

从类继承的方法 org.apache.flink.table.api.TableColumn

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

从类继承的方法 java.lang.Object

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

方法详细资料

isPhysical

public boolean isPhysical()

从类复制的说明: TableColumn

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

指定者:

isPhysical 在类中 TableColumn

isPersisted

public boolean isPersisted()

从类复制的说明: TableColumn

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

指定者:

isPersisted 在类中 TableColumn

getExpression

public String getExpression()

explainExtras

public Optional<String> explainExtras()

从类复制的说明: TableColumn

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

指定者:

explainExtras 在类中 TableColumn

equals

public boolean equals(Object o)

覆盖:

equals 在类中 TableColumn

hashCode

public int hashCode()

覆盖:

hashCode 在类中 TableColumn