org.apache.flink.table.catalog

类 Column.ComputedColumn

java.lang.Object

org.apache.flink.table.catalog.Column

org.apache.flink.table.catalog.Column.ComputedColumn

封闭类:

Column

public static final class Column.ComputedColumn
extends Column

Representation of a computed column.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.table.catalog.Column

Column.ComputedColumn, Column.MetadataColumn, Column.PhysicalColumn

字段概要

从类继承的字段 org.apache.flink.table.catalog.Column

comment, dataType, name

方法概要

限定符和类型	方法和说明
Column	copy(DataType newDataType) Returns a copy of the column with a replaced DataType.
boolean	equals(Object o)
Optional<String>	explainExtras() Returns an explanation of specific column extras next to name and type.
ResolvedExpression	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.
Column.ComputedColumn	withComment(String comment) Add the comment to the column and return the new object.

从类继承的方法 org.apache.flink.table.catalog.Column

asSummaryString, computed, getComment, getDataType, getName, metadata, 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

withComment

public Column.ComputedColumn withComment(String comment)

从类复制的说明: Column

Add the comment to the column and return the new object.

指定者:

withComment 在类中 Column

isPhysical

public boolean isPhysical()

从类复制的说明: Column

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

指定者:

isPhysical 在类中 Column

isPersisted

public boolean isPersisted()

从类复制的说明: Column

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

指定者:

isPersisted 在类中 Column

getExpression

public ResolvedExpression getExpression()

explainExtras

public Optional<String> explainExtras()

从类复制的说明: Column

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

指定者:

explainExtras 在类中 Column

copy

public Column copy(DataType newDataType)

从类复制的说明: Column

Returns a copy of the column with a replaced DataType.

指定者:

copy 在类中 Column

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Column

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Column