Package org.apache.flink.table.watermark
Enum WatermarkEmitStrategy
- java.lang.Object
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- java.lang.Enum<WatermarkEmitStrategy>
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- org.apache.flink.table.watermark.WatermarkEmitStrategy
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- All Implemented Interfaces:
Serializable
,Comparable<WatermarkEmitStrategy>
@PublicEvolving public enum WatermarkEmitStrategy extends Enum<WatermarkEmitStrategy>
The strategy for emitting watermark.
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Enum Constant Summary
Enum Constants Enum Constant Description ON_EVENT
Emit watermark for every event.ON_PERIODIC
Emit watermark periodically. the period is configured byPipelineOptions.AUTO_WATERMARK_INTERVAL
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description String
getAlias()
boolean
isOnEvent()
boolean
isOnPeriodic()
String
toString()
static WatermarkEmitStrategy
valueOf(String name)
Returns the enum constant of this type with the specified name.static WatermarkEmitStrategy[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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ON_EVENT
public static final WatermarkEmitStrategy ON_EVENT
Emit watermark for every event.
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ON_PERIODIC
public static final WatermarkEmitStrategy ON_PERIODIC
Emit watermark periodically. the period is configured byPipelineOptions.AUTO_WATERMARK_INTERVAL
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Method Detail
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values
public static WatermarkEmitStrategy[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (WatermarkEmitStrategy c : WatermarkEmitStrategy.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static WatermarkEmitStrategy valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is null
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getAlias
public String getAlias()
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isOnEvent
public boolean isOnEvent()
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isOnPeriodic
public boolean isOnPeriodic()
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toString
public String toString()
- Overrides:
toString
in classEnum<WatermarkEmitStrategy>
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