Java Code Examples for org.apache.flink.streaming.api.environment.StreamExecutionEnvironment#createInput()

The following examples show how to use org.apache.flink.streaming.api.environment.StreamExecutionEnvironment#createInput() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: StreamingCustomInputSplitProgram.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
			Configuration config = new Configuration();

	config.setString(AkkaOptions.ASK_TIMEOUT, "5 s");

	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

	env.getConfig().disableSysoutLogging();

	DataStream<Integer> data = env.createInput(new CustomInputFormat());

	data.map(new MapFunction<Integer, Tuple2<Integer, Double>>() {
		@Override
		public Tuple2<Integer, Double> map(Integer value) throws Exception {
			return new Tuple2<Integer, Double>(value, value * 0.5);
		}
	}).addSink(new NoOpSink());

	env.execute();
}
Example 2
Source File: StreamingCustomInputSplitProgram.java    From flink with Apache License 2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
			Configuration config = new Configuration();

	config.setString(AkkaOptions.ASK_TIMEOUT, "5 s");

	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

	env.getConfig().disableSysoutLogging();

	DataStream<Integer> data = env.createInput(new CustomInputFormat());

	data.map(new MapFunction<Integer, Tuple2<Integer, Double>>() {
		@Override
		public Tuple2<Integer, Double> map(Integer value) throws Exception {
			return new Tuple2<Integer, Double>(value, value * 0.5);
		}
	}).addSink(new DiscardingSink<>());

	env.execute();
}
Example 3
Source File: StreamingCustomInputSplitProgram.java    From flink with Apache License 2.0 6 votes vote down vote up 
public static void main(String[] args) throws Exception {
			Configuration config = new Configuration();

	config.setString(AkkaOptions.ASK_TIMEOUT, "5 s");

	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

	DataStream<Integer> data = env.createInput(new CustomInputFormat());

	data.map(new MapFunction<Integer, Tuple2<Integer, Double>>() {
		@Override
		public Tuple2<Integer, Double> map(Integer value) throws Exception {
			return new Tuple2<Integer, Double>(value, value * 0.5);
		}
	}).addSink(new DiscardingSink<>());

	env.execute();
}
Example 4
Source File: FlinkTsFileStreamSource.java    From incubator-iotdb with Apache License 2.0 5 votes vote down vote up 
public static void main(String[] args) throws IOException {
	String path = "test.tsfile";
	TsFileUtils.writeTsFile(path);
	new File(path).deleteOnExit();
	String[] filedNames = {
		QueryConstant.RESERVED_TIME,
		"device_1.sensor_1",
		"device_1.sensor_2",
		"device_1.sensor_3",
		"device_2.sensor_1",
		"device_2.sensor_2",
		"device_2.sensor_3"
	};
	TypeInformation[] typeInformations = new TypeInformation[] {
		Types.LONG,
		Types.LONG,
		Types.LONG,
		Types.LONG,
		Types.LONG,
		Types.LONG,
		Types.LONG
	};
	List<Path> paths = Arrays.stream(filedNames)
		.filter(s -> !s.equals(QueryConstant.RESERVED_TIME))
		.map(Path::new)
		.collect(Collectors.toList());
	RowTypeInfo rowTypeInfo = new RowTypeInfo(typeInformations, filedNames);
	QueryExpression queryExpression = QueryExpression.create(paths, null);
	RowRowRecordParser parser = RowRowRecordParser.create(rowTypeInfo, queryExpression.getSelectedSeries());
	TsFileInputFormat<Row> inputFormat = new TsFileInputFormat<>(queryExpression, parser);
	StreamExecutionEnvironment senv = StreamExecutionEnvironment.getExecutionEnvironment();
	inputFormat.setFilePath("source.tsfile");
	DataStream<Row> source = senv.createInput(inputFormat);
	DataStream<String> rowString = source.map(Row::toString);
	Iterator<String> result = DataStreamUtils.collect(rowString);
	while (result.hasNext()) {
		System.out.println(result.next());
	}
}
Example 5
Source File: InputFormatTableSource.java    From flink with Apache License 2.0 4 votes vote down vote up 
@SuppressWarnings("unchecked")
@Override
public final DataStream<T> getDataStream(StreamExecutionEnvironment execEnv) {
	TypeInformation<T> typeInfo = (TypeInformation<T>) fromDataTypeToLegacyInfo(getProducedDataType());
	return execEnv.createInput(getInputFormat(), typeInfo);
}
Example 6
Source File: InputFormatTableSource.java    From flink with Apache License 2.0 4 votes vote down vote up 
@SuppressWarnings("unchecked")
@Override
public final DataStream<T> getDataStream(StreamExecutionEnvironment execEnv) {
	TypeInformation<T> typeInfo = (TypeInformation<T>) fromDataTypeToLegacyInfo(getProducedDataType());
	return execEnv.createInput(getInputFormat(), typeInfo);
}