本文整理了Java中cz.seznam.euphoria.core.client.operator.FlatMap.getEventTimeExtractor()方法的一些代码示例，展示了FlatMap.getEventTimeExtractor()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。FlatMap.getEventTimeExtractor()方法的具体详情如下：
包路径：cz.seznam.euphoria.core.client.operator.FlatMap
类名称：FlatMap
方法名：getEventTimeExtractor

FlatMap.getEventTimeExtractor介绍

[英]Retrieves the optional user defined event time assigner.
[中]检索可选的用户定义事件时间赋值器。

代码示例

代码示例来源：origin: seznam/euphoria

InputProvider ret = new InputProvider();
final UnaryFunctor mapper = flatMap.get().getFunctor();
final ExtractEventTime eventTimeFn = flatMap.get().getEventTimeExtractor();
for (Supplier s : suppliers) {
 final BlockingQueue<Datum> out = new ArrayBlockingQueue(5000);

代码示例来源：origin: seznam/euphoria

InputProvider ret = new InputProvider();
final UnaryFunctor mapper = flatMap.get().getFunctor();
final ExtractEventTime eventTimeFn = flatMap.get().getEventTimeExtractor();
for (Supplier s : suppliers) {
 final BlockingQueue<Datum> out = new ArrayBlockingQueue(5000);

代码示例来源：origin: seznam/euphoria

@Override
 @SuppressWarnings("unchecked")
 public JavaRDD<?> translate(FlatMap operator, SparkExecutorContext context) {

  final JavaRDD<?> input = context.getSingleInput(operator);
  final UnaryFunctor<?, ?> mapper = operator.getFunctor();
  final ExtractEventTime<?> evtTimeFn = operator.getEventTimeExtractor();

  LazyAccumulatorProvider accumulators =
    new LazyAccumulatorProvider(context.getAccumulatorFactory(), context.getSettings());
  if (evtTimeFn != null) {
   return input
     .flatMap(new EventTimeAssigningUnaryFunctor(mapper, evtTimeFn, accumulators))
     .setName(operator.getName() + "::event-time-and-apply-udf");
  } else {
   return input
     .flatMap(new UnaryFunctorWrapper(mapper, accumulators))
     .setName(operator.getName() + "::apply-udf");
  }
 }
}

代码示例来源：origin: seznam/euphoria

@Override
 @SuppressWarnings("unchecked")
 public DataStream<?> translate(FlinkOperator<FlatMap> operator,
                 StreamingExecutorContext context) {
  Settings settings = context.getSettings();
  FlinkAccumulatorFactory accumulatorFactory = context.getAccumulatorFactory();

  DataStream input = context.getSingleInputStream(operator);
  UnaryFunctor mapper = operator.getOriginalOperator().getFunctor();
  ExtractEventTime evtTimeFn = operator.getOriginalOperator().getEventTimeExtractor();
  if (evtTimeFn != null) {
   input = input.assignTimestampsAndWatermarks(
     new EventTimeAssigner(context.getAllowedLateness(), evtTimeFn))
     .returns((Class) StreamingElement.class);
  }
  return input
    .flatMap(new StreamingUnaryFunctorWrapper(mapper, accumulatorFactory, settings))
    .returns((Class) StreamingElement.class)
    .name(operator.getName())
    .setParallelism(operator.getParallelism());
 }
}

代码示例来源：origin: seznam/euphoria

@Override
 @SuppressWarnings("unchecked")
 public DataSet<?> translate(FlinkOperator<FlatMap> operator,
               BatchExecutorContext context) {

  Settings settings = context.getSettings();
  FlinkAccumulatorFactory accumulatorFactory = context.getAccumulatorFactory();

  DataSet<?> input = context.getSingleInputStream(operator);
  UnaryFunctor mapper = operator.getOriginalOperator().getFunctor();
  ExtractEventTime timeAssigner = operator.getOriginalOperator().getEventTimeExtractor();
  if (timeAssigner != null) {
   input = input.map(i -> {
      BatchElement wel = (BatchElement) i;
      wel.setTimestamp(timeAssigner.extractTimestamp(wel.getElement()));
      return wel;
     })
     .returns((Class) BatchElement.class);
  }

  return input
    .flatMap(new BatchUnaryFunctorWrapper(mapper, accumulatorFactory, settings))
    .returns((Class) BatchElement.class)
    .setParallelism(operator.getParallelism())
    .name(operator.getName());
 }
}

代码示例来源：origin: seznam/euphoria

@Test
public void testBuild() {
 Flow flow = Flow.create("TEST");
 Dataset<String> dataset = Util.createMockDataset(flow, 1);
 Dataset<String> mapped = FlatMap.named("FlatMap1")
   .of(dataset)
   .using((String s, Collector<String> c) -> c.collect(s))
   .output();
 assertEquals(flow, mapped.getFlow());
 assertEquals(1, flow.size());
 FlatMap map = (FlatMap) flow.operators().iterator().next();
 assertEquals(flow, map.getFlow());
 assertEquals("FlatMap1", map.getName());
 assertNotNull(map.getFunctor());
 assertEquals(mapped, map.output());
 assertNull(map.getEventTimeExtractor());
}

代码示例来源：origin: seznam/euphoria

@Test
public void testBuild_EventTimeExtractor() {
 Flow flow = Flow.create("TEST");
 Dataset<String> dataset = Util.createMockDataset(flow, 1);
 Dataset<BigDecimal> mapped = FlatMap.named("FlatMap2")
   .of(dataset)
   .using((String s, Collector<BigDecimal> c) -> c.collect(null))
   .eventTimeBy(Long::parseLong) // ~ consuming the original input elements
   .output();
 assertEquals(flow, mapped.getFlow());
 assertEquals(1, flow.size());
 FlatMap map = (FlatMap) flow.operators().iterator().next();
 assertEquals(flow, map.getFlow());
 assertEquals("FlatMap2", map.getName());
 assertNotNull(map.getFunctor());
 assertEquals(mapped, map.output());
 assertNotNull(map.getEventTimeExtractor());
}