org.apache.flink.table.catalog

类 WatermarkSpec

java.lang.Object

org.apache.flink.table.catalog.WatermarkSpec

@PublicEvolving
public final class WatermarkSpec
extends Object

Representation of a watermark specification in a ResolvedSchema.

It defines the rowtime attribute and a ResolvedExpression for watermark generation.

方法概要

限定符和类型	方法和说明
String	asSummaryString()
boolean	equals(Object o)
String	getRowtimeAttribute() Returns the name of a rowtime attribute.
ResolvedExpression	getWatermarkExpression() Returns the ResolvedExpression for watermark generation.
int	hashCode()
static WatermarkSpec	of(String rowtimeAttribute, ResolvedExpression watermarkExpression)
String	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

of

public static WatermarkSpec of(String rowtimeAttribute,
                               ResolvedExpression watermarkExpression)

getRowtimeAttribute

public String getRowtimeAttribute()

Returns the name of a rowtime attribute.

The referenced attribute must be present in the ResolvedSchema and must be of TimestampType.

getWatermarkExpression

public ResolvedExpression getWatermarkExpression()

Returns the ResolvedExpression for watermark generation.

asSummaryString

public String asSummaryString()

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object