Package org.apache.flink.streaming.runtime.watermark

Class AbstractInternalWatermarkDeclaration<T>

java.lang.Object

org.apache.flink.streaming.runtime.watermark.AbstractInternalWatermarkDeclaration<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.watermark.WatermarkDeclaration

Direct Known Subclasses:

InternalBoolWatermarkDeclaration, InternalLongWatermarkDeclaration

public abstract class AbstractInternalWatermarkDeclaration<T>
extends Object
implements org.apache.flink.api.common.watermark.WatermarkDeclaration

The AbstractInternalWatermarkDeclaration class implements the WatermarkDeclaration interface and provides some internal-oriented methods, such as getting/setting the align flag and creating the WatermarkCombiner.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.apache.flink.api.common.watermark.WatermarkCombinationPolicy	combinationPolicy
protected final org.apache.flink.api.common.watermark.WatermarkHandlingStrategy	defaultHandlingStrategy
protected final String	identifier
protected final boolean	isAligned

Constructor Summary

Constructors

Constructor	Description
AbstractInternalWatermarkDeclaration(String identifier, org.apache.flink.api.common.watermark.WatermarkCombinationPolicy combinationPolicy, org.apache.flink.api.common.watermark.WatermarkHandlingStrategy defaultHandlingStrategy, boolean isAligned)

Method Summary

Modifier and Type	Method	Description
abstract WatermarkCombiner	createWatermarkCombiner(int numberOfInputChannels, Runnable gateResumer)	Creates a new WatermarkCombiner instance.
static AbstractInternalWatermarkDeclaration<?>	from(org.apache.flink.api.common.watermark.WatermarkDeclaration watermarkDeclaration)	Converts a user-oriented WatermarkDeclaration to an internal-oriented AbstractInternalWatermarkDeclaration.
org.apache.flink.api.common.watermark.WatermarkCombinationPolicy	getCombinationPolicy()
org.apache.flink.api.common.watermark.WatermarkHandlingStrategy	getDefaultHandlingStrategy()
String	getIdentifier()
boolean	isAligned()
abstract org.apache.flink.api.common.watermark.Watermark	newWatermark(T val)	Creates a new Watermark with the specified value.

Methods inherited from class java.lang.Object

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

Field Details

identifier

protected final String identifier

combinationPolicy

protected final org.apache.flink.api.common.watermark.WatermarkCombinationPolicy combinationPolicy

defaultHandlingStrategy

protected final org.apache.flink.api.common.watermark.WatermarkHandlingStrategy defaultHandlingStrategy

isAligned

protected final boolean isAligned

Constructor Details

AbstractInternalWatermarkDeclaration

public AbstractInternalWatermarkDeclaration(String identifier,
 org.apache.flink.api.common.watermark.WatermarkCombinationPolicy combinationPolicy,
 org.apache.flink.api.common.watermark.WatermarkHandlingStrategy defaultHandlingStrategy,
 boolean isAligned)

Method Details

getIdentifier

public String getIdentifier()

Specified by:

getIdentifier in interface org.apache.flink.api.common.watermark.WatermarkDeclaration

newWatermark

public abstract org.apache.flink.api.common.watermark.Watermark newWatermark(T val)

Creates a new Watermark with the specified value.

getCombinationPolicy

public org.apache.flink.api.common.watermark.WatermarkCombinationPolicy getCombinationPolicy()

getDefaultHandlingStrategy

public org.apache.flink.api.common.watermark.WatermarkHandlingStrategy getDefaultHandlingStrategy()

isAligned

public boolean isAligned()

createWatermarkCombiner

public abstract WatermarkCombiner createWatermarkCombiner(int numberOfInputChannels,
 Runnable gateResumer)

Creates a new WatermarkCombiner instance.

from

public static AbstractInternalWatermarkDeclaration<?> from(org.apache.flink.api.common.watermark.WatermarkDeclaration watermarkDeclaration)

Converts a user-oriented WatermarkDeclaration to an internal-oriented AbstractInternalWatermarkDeclaration.