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https://issues.apache.org/jira/browse/FLINK-18873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn Visser updated FLINK-18873:
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Fix Version/s: (was: 1.18.0)
> Make the WatermarkStrategy API more scala friendly
> --------------------------------------------------
>
> Key: FLINK-18873
> URL: https://issues.apache.org/jira/browse/FLINK-18873
> Project: Flink
> Issue Type: Improvement
> Components: API / Core, API / DataStream
> Affects Versions: 1.11.0
> Reporter: Dawid Wysakowicz
> Priority: Minor
> Labels: auto-deprioritized-major
>
> Right now there is no reliable way of passing WatermarkGeneratorSupplier
> and/or TimestampAssigner as lambdas in scala.
> The only way to use this API is:
> {code}
> .assignTimestampsAndWatermarks(
> WatermarkStrategy.forGenerator[(String, Long)](
> new WatermarkGeneratorSupplier[(String, Long)] {
> override def createWatermarkGenerator(context:
> WatermarkGeneratorSupplier.Context): WatermarkGenerator[(String, Long)] =
> new MyPeriodicGenerator
> }
> )
> .withTimestampAssigner(new SerializableTimestampAssigner[(String,
> Long)] {
> override def extractTimestamp(t: (String, Long), l: Long): Long =
> t._2
> })
> )
> {code}
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