Uses of Class
org.apache.flink.streaming.api.datastream.DataStream

Packages that use DataStream

Package	Description
org.apache.flink.streaming.api.datastream
org.apache.flink.streaming.api.datastream.temporal
org.apache.flink.streaming.api.environment

Uses of DataStream in org.apache.flink.streaming.api.datastream

Subclasses of DataStream in org.apache.flink.streaming.api.datastream

Modifier and Type	Class and Description
class	DataStreamSink<IN> Represents the end of a DataStream.
class	DataStreamSource<OUT> The DataStreamSource represents the starting point of a DataStream.
class	GroupedDataStream<OUT> A GroupedDataStream represents a DataStream which has been partitioned by the given KeySelector.
class	IterativeDataStream<IN> The iterative data stream represents the start of an iteration in a DataStream.
class	SingleOutputStreamOperator<OUT,O extends SingleOutputStreamOperator<OUT,O>> The SingleOutputStreamOperator represents a user defined transformation applied on a DataStream with one predefined output type.
class	SplitDataStream<OUT> The SplitDataStream represents an operator that has been split using an OutputSelector.

Fields in org.apache.flink.streaming.api.datastream declared as DataStream

Modifier and Type	Field and Description
protected DataStream<OUT>	WindowedDataStream.dataStream
protected DataStream<IN1>	ConnectedDataStream.dataStream1
protected DataStream<IN2>	ConnectedDataStream.dataStream2

Fields in org.apache.flink.streaming.api.datastream with type parameters of type DataStream

Modifier and Type	Field and Description
protected List<DataStream<OUT>>	DataStream.unionizedStreams

Methods in org.apache.flink.streaming.api.datastream that return DataStream

Modifier and Type	Method and Description
DataStream<OUT>	DataStream.broadcast() Sets the partitioning of the DataStream so that the output tuples are broadcasted to every parallel instance of the next component.
DataStream<IN>	IterativeDataStream.closeWith(DataStream<IN> iterationTail) Closes the iteration.
DataStream<IN>	IterativeDataStream.closeWith(DataStream<IN> iterationTail, boolean keepPartitioning) Closes the iteration.
DataStream<OUT>	DataStream.copy() Creates a copy of the DataStream
DataStream<OUT>	WindowedDataStream.flatten() Flattens the results of the window computations and streams out the window elements.
DataStream<OUT>	DiscretizedStream.flatten()
DataStream<OUT>	DataStream.forward() Sets the partitioning of the DataStream so that the output tuples are forwarded to the local subtask of the next component (whenever possible).
DataStream<StreamWindow<OUT>>	WindowedDataStream.getDiscretizedStream() Returns the DataStream of StreamWindows which represent the discretised stream.
DataStream<StreamWindow<OUT>>	DiscretizedStream.getDiscretizedStream()
DataStream<IN1>	ConnectedDataStream.getFirst() Returns the first DataStream.
DataStream<IN2>	ConnectedDataStream.getSecond() Returns the second DataStream.
DataStream<OUT>	DataStream.global() Sets the partitioning of the DataStream so that the output values all go to the first instance of the next processing operator.
DataStream<OUT>	SingleOutputStreamOperator.name(String name) Sets the name of the current data stream.
DataStream<OUT>	DataStream.partitionByHash(int... fields) Sets the partitioning of the DataStream so that the output is partitioned hashing on the given fields.
DataStream<OUT>	DataStream.partitionByHash(org.apache.flink.api.java.functions.KeySelector<OUT,?> keySelector) Sets the partitioning of the DataStream so that the output is partitioned using the given KeySelector.
DataStream<OUT>	DataStream.partitionByHash(String... fields) Sets the partitioning of the DataStream so that the output is partitioned hashing on the given fields.
DataStream<OUT>	DataStream.rebalance() Sets the partitioning of the DataStream so that the output tuples are distributed evenly to instances of the next component in a Round-robin fashion.
DataStream<OUT>	SplitDataStream.select(String... outputNames) Sets the output names for which the next operator will receive values.
protected DataStream<OUT>	GroupedDataStream.setConnectionType(StreamPartitioner<OUT> partitioner)
protected DataStream<OUT>	DataStream.setConnectionType(StreamPartitioner<OUT> partitioner) Internal function for setting the partitioner for the DataStream
DataStream<OUT>	DataStream.shuffle() Sets the partitioning of the DataStream so that the output tuples are shuffled uniformly randomly to the next component.
DataStream<OUT>	DataStream.union(DataStream<OUT>... streams) Creates a new DataStream by merging DataStream outputs of the same type with each other.

Methods in org.apache.flink.streaming.api.datastream with parameters of type DataStream

Modifier and Type	Method and Description
DataStream<IN>	IterativeDataStream.closeWith(DataStream<IN> iterationTail) Closes the iteration.
DataStream<IN>	IterativeDataStream.closeWith(DataStream<IN> iterationTail, boolean keepPartitioning) Closes the iteration.
<R> ConnectedDataStream<OUT,R>	DataStream.connect(DataStream<R> dataStream) Creates a new ConnectedDataStream by connecting DataStream outputs of (possible) different types with each other.
protected <X> void	DataStream.connectGraph(DataStream<X> inputStream, Integer outputID, int typeNumber) Internal function for assembling the underlying JobGraph of the job.
<IN2> StreamCrossOperator<OUT,IN2>	DataStream.cross(DataStream<IN2> dataStreamToCross) Initiates a temporal Cross transformation. A Cross transformation combines the elements of two DataStreams into one DataStream over a specified time window.
<IN2> StreamJoinOperator<OUT,IN2>	DataStream.join(DataStream<IN2> dataStreamToJoin) Initiates a temporal Join transformation.
DataStream<OUT>	DataStream.union(DataStream<OUT>... streams) Creates a new DataStream by merging DataStream outputs of the same type with each other.

Constructors in org.apache.flink.streaming.api.datastream with parameters of type DataStream

Constructor and Description
ConnectedDataStream(DataStream<IN1> input1, DataStream<IN2> input2)
ConnectedDataStream(DataStream<IN1> input1, DataStream<IN2> input2)
DataStream(DataStream<OUT> dataStream) Create a new DataStream by creating a copy of another DataStream
DataStreamSink(DataStream<IN> dataStream)
GroupedDataStream(DataStream<OUT> dataStream, org.apache.flink.api.java.functions.KeySelector<OUT,?> keySelector) Creates a new GroupedDataStream, group inclusion is determined using a KeySelector on the elements of the DataStream.
IterativeDataStream(DataStream<IN> dataStream, long maxWaitTime)
SingleOutputStreamOperator(DataStream<OUT> dataStream)
SplitDataStream(DataStream<OUT> dataStream)
StreamProjection(DataStream<IN> dataStream, int[] fieldIndexes)
WindowedDataStream(DataStream<OUT> dataStream, TriggerPolicy<OUT> trigger, EvictionPolicy<OUT> evicter)
WindowedDataStream(DataStream<OUT> dataStream, WindowingHelper<OUT> policyHelper)

Uses of DataStream in org.apache.flink.streaming.api.datastream.temporal

Subclasses of DataStream in org.apache.flink.streaming.api.datastream.temporal

Modifier and Type	Class and Description
static class	StreamCrossOperator.CrossWindow<I1,I2>
static class	StreamJoinOperator.JoinedStream<I1,I2>

Fields in org.apache.flink.streaming.api.datastream.temporal declared as DataStream

Modifier and Type	Field and Description
DataStream<I1>	TemporalOperator.input1
DataStream<I2>	TemporalOperator.input2

Constructors in org.apache.flink.streaming.api.datastream.temporal with parameters of type DataStream

Constructor and Description
CrossWindow(StreamCrossOperator<I1,I2> op, DataStream<org.apache.flink.api.java.tuple.Tuple2<I1,I2>> ds)
StreamCrossOperator(DataStream<I1> input1, DataStream<I2> input2)
StreamCrossOperator(DataStream<I1> input1, DataStream<I2> input2)
StreamJoinOperator(DataStream<I1> input1, DataStream<I2> input2)
StreamJoinOperator(DataStream<I1> input1, DataStream<I2> input2)
TemporalOperator(DataStream<I1> input1, DataStream<I2> input2)
TemporalOperator(DataStream<I1> input1, DataStream<I2> input2)

Uses of DataStream in org.apache.flink.streaming.api.environment

Methods in org.apache.flink.streaming.api.environment that return DataStream

Modifier and Type	Method and Description
DataStream<String>	StreamExecutionEnvironment.readFileStream(String filePath, long intervalMillis, FileMonitoringFunction.WatchType watchType) Creates a data stream that contains the contents of file created while system watches the given path.