Examples with KeySelector org.apache.flink.api.java.functions.KeySelector used on opensource projects

Example 36 with KeySelector

use of org.apache.flink.api.java.functions.KeySelector in project flink by apache.

the class MultiInputSortingDataInputsTest method twoInputOrderTest.

@SuppressWarnings("unchecked")
public void twoInputOrderTest(int preferredIndex, int sortedIndex) throws Exception {
    CollectingDataOutput<Object> collectingDataOutput = new CollectingDataOutput<>();
    List<StreamElement> sortedInputElements = Arrays.asList(new StreamRecord<>(1, 3), new StreamRecord<>(1, 1), new StreamRecord<>(2, 1), new StreamRecord<>(2, 3), new StreamRecord<>(1, 2), new StreamRecord<>(2, 2), Watermark.MAX_WATERMARK);
    CollectionDataInput<Integer> sortedInput = new CollectionDataInput<>(sortedInputElements, sortedIndex);
    List<StreamElement> preferredInputElements = Arrays.asList(new StreamRecord<>(99, 3), new StreamRecord<>(99, 1), new Watermark(99L));
    CollectionDataInput<Integer> preferredInput = new CollectionDataInput<>(preferredInputElements, preferredIndex);
    KeySelector<Integer, Integer> keySelector = value -> value;
    try (MockEnvironment environment = MockEnvironment.builder().build()) {
        SelectableSortingInputs selectableSortingInputs = MultiInputSortingDataInput.wrapInputs(new DummyInvokable(), new StreamTaskInput[] { sortedInput }, new KeySelector[] { keySelector }, new TypeSerializer[] { new IntSerializer() }, new IntSerializer(), new StreamTaskInput[] { preferredInput }, environment.getMemoryManager(), environment.getIOManager(), true, 1.0, new Configuration(), new ExecutionConfig());
        StreamTaskInput<?>[] sortingDataInputs = selectableSortingInputs.getSortedInputs();
        StreamTaskInput<?>[] preferredDataInputs = selectableSortingInputs.getPassThroughInputs();
        try (StreamTaskInput<Object> preferredTaskInput = (StreamTaskInput<Object>) preferredDataInputs[0];
            StreamTaskInput<Object> sortedTaskInput = (StreamTaskInput<Object>) sortingDataInputs[0]) {
            MultipleInputSelectionHandler selectionHandler = new MultipleInputSelectionHandler(selectableSortingInputs.getInputSelectable(), 2);
            @SuppressWarnings("rawtypes") StreamOneInputProcessor[] inputProcessors = new StreamOneInputProcessor[2];
            inputProcessors[preferredIndex] = new StreamOneInputProcessor<>(preferredTaskInput, collectingDataOutput, new DummyOperatorChain());
            inputProcessors[sortedIndex] = new StreamOneInputProcessor<>(sortedTaskInput, collectingDataOutput, new DummyOperatorChain());
            StreamMultipleInputProcessor processor = new StreamMultipleInputProcessor(selectionHandler, inputProcessors);
            DataInputStatus inputStatus;
            do {
                inputStatus = processor.processInput();
            } while (inputStatus != DataInputStatus.END_OF_INPUT);
        }
    }
    assertThat(collectingDataOutput.events, equalTo(Arrays.asList(new StreamRecord<>(99, 3), new StreamRecord<>(99, 1), // max watermark from the preferred input
    new Watermark(99L), new StreamRecord<>(1, 1), new StreamRecord<>(1, 2), new StreamRecord<>(1, 3), new StreamRecord<>(2, 1), new StreamRecord<>(2, 2), new StreamRecord<>(2, 3), // max watermark from the sorted input
    Watermark.MAX_WATERMARK)));
}

Example 37 with KeySelector

use of org.apache.flink.api.java.functions.KeySelector in project flink by apache.

the class SortingDataInputTest method simpleVariableLengthKeySorting.

@Test
public void simpleVariableLengthKeySorting() throws Exception {
    CollectingDataOutput<Integer> collectingDataOutput = new CollectingDataOutput<>();
    CollectionDataInput<Integer> input = new CollectionDataInput<>(Arrays.asList(new StreamRecord<>(1, 3), new StreamRecord<>(1, 1), new StreamRecord<>(2, 1), new StreamRecord<>(2, 3), new StreamRecord<>(1, 2), new StreamRecord<>(2, 2)));
    MockEnvironment environment = MockEnvironment.builder().build();
    SortingDataInput<Integer, String> sortingDataInput = new SortingDataInput<>(input, new IntSerializer(), new StringSerializer(), (KeySelector<Integer, String>) value -> "" + value, environment.getMemoryManager(), environment.getIOManager(), true, 1.0, new Configuration(), new DummyInvokable(), new ExecutionConfig());
    DataInputStatus inputStatus;
    do {
        inputStatus = sortingDataInput.emitNext(collectingDataOutput);
    } while (inputStatus != DataInputStatus.END_OF_INPUT);
    assertThat(collectingDataOutput.events, equalTo(Arrays.asList(new StreamRecord<>(1, 1), new StreamRecord<>(1, 2), new StreamRecord<>(1, 3), new StreamRecord<>(2, 1), new StreamRecord<>(2, 2), new StreamRecord<>(2, 3))));
}

Example 38 with KeySelector

use of org.apache.flink.api.java.functions.KeySelector in project flink by apache.

the class StateDescriptorPassingTest method testReduceWindowState.

@Test
public void testReduceWindowState() {
    final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    env.registerTypeWithKryoSerializer(File.class, JavaSerializer.class);
    DataStream<File> src = env.fromElements(new File("/")).assignTimestampsAndWatermarks(WatermarkStrategy.<File>forMonotonousTimestamps().withTimestampAssigner((file, ts) -> System.currentTimeMillis()));
    SingleOutputStreamOperator<?> result = src.keyBy(new KeySelector<File, String>() {

        @Override
        public String getKey(File value) {
            return null;
        }
    }).window(TumblingEventTimeWindows.of(Time.milliseconds(1000))).reduce(new ReduceFunction<File>() {

        @Override
        public File reduce(File value1, File value2) {
            return null;
        }
    });
    validateStateDescriptorConfigured(result);
}

Example 39 with KeySelector

use of org.apache.flink.api.java.functions.KeySelector in project flink by apache.

the class StateDescriptorPassingTest method testApplyWindowState.

@Test
public void testApplyWindowState() {
    final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    env.registerTypeWithKryoSerializer(File.class, JavaSerializer.class);
    DataStream<File> src = env.fromElements(new File("/")).assignTimestampsAndWatermarks(WatermarkStrategy.<File>forMonotonousTimestamps().withTimestampAssigner((file, ts) -> System.currentTimeMillis()));
    SingleOutputStreamOperator<?> result = src.keyBy(new KeySelector<File, String>() {

        @Override
        public String getKey(File value) {
            return null;
        }
    }).window(TumblingEventTimeWindows.of(Time.milliseconds(1000))).apply(new WindowFunction<File, String, String, TimeWindow>() {

        @Override
        public void apply(String s, TimeWindow window, Iterable<File> input, Collector<String> out) {
        }
    });
    validateListStateDescriptorConfigured(result);
}

Example 40 with KeySelector

use of org.apache.flink.api.java.functions.KeySelector in project flink by apache.

the class StateDescriptorPassingTest method testProcessWindowState.

@Test
public void testProcessWindowState() {
    final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
    env.registerTypeWithKryoSerializer(File.class, JavaSerializer.class);
    DataStream<File> src = env.fromElements(new File("/")).assignTimestampsAndWatermarks(WatermarkStrategy.<File>forMonotonousTimestamps().withTimestampAssigner((file, ts) -> System.currentTimeMillis()));
    SingleOutputStreamOperator<?> result = src.keyBy(new KeySelector<File, String>() {

        @Override
        public String getKey(File value) {
            return null;
        }
    }).window(TumblingEventTimeWindows.of(Time.milliseconds(1000))).process(new ProcessWindowFunction<File, String, String, TimeWindow>() {

        @Override
        public void process(String s, Context ctx, Iterable<File> input, Collector<String> out) {
        }
    });
    validateListStateDescriptorConfigured(result);
}