org.apache.flink.table.runtime.generated

类 WatermarkGenerator

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.table.runtime.generated.WatermarkGenerator

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction

直接已知子类:

BoundedOutOfOrderWatermarkGenerator

public abstract class WatermarkGenerator
extends org.apache.flink.api.common.functions.AbstractRichFunction

The WatermarkGenerator is used to generate watermark based the input elements.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
WatermarkGenerator()

方法概要

限定符和类型	方法和说明
abstract Long	currentWatermark(org.apache.flink.table.data.RowData row) Returns the watermark for the current row or null if no watermark should be generated.

从类继承的方法 org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

WatermarkGenerator

public WatermarkGenerator()

方法详细资料

currentWatermark

@Nullable
public abstract Long currentWatermark(org.apache.flink.table.data.RowData row)
                                         throws Exception

Returns the watermark for the current row or null if no watermark should be generated.

参数:

row - The current row.

返回:

The watermark for this row or null if no watermark should be generated.

抛出:

Exception