org.apache.flink.streaming.api.datastream.temporal

Class TemporalOperator<I1,I2,OP extends TemporalWindow<OP>>

java.lang.Object

org.apache.flink.streaming.api.datastream.temporal.TemporalOperator<I1,I2,OP>

Direct Known Subclasses:

StreamCrossOperator, StreamJoinOperator

public abstract class TemporalOperator<I1,I2,OP extends TemporalWindow<OP>>
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
DataStream<I1>	input1
DataStream<I2>	input2
long	slideInterval
TimestampWrapper<I1>	timeStamp1
TimestampWrapper<I2>	timeStamp2
long	windowSize

Constructor Summary

Constructors

Constructor and Description
TemporalOperator(DataStream<I1> input1, DataStream<I2> input2)

Method Summary

Modifier and Type	Method and Description
protected abstract OP	createNextWindowOperator()
OP	onWindow(long length, Timestamp<I1> timeStamp1, Timestamp<I2> timeStamp2) Continues a temporal transformation. Defines the window size on which the two DataStreams will be transformed.To define sliding windows call TemporalWindow.every(long, java.util.concurrent.TimeUnit) on the resulting operator.
OP	onWindow(long length, Timestamp<I1> timeStamp1, Timestamp<I2> timeStamp2, long startTime) Continues a temporal transformation. Defines the window size on which the two DataStreams will be transformed.To define sliding windows call TemporalWindow.every(long, java.util.concurrent.TimeUnit) on the resulting operator.
OP	onWindow(long length, TimeUnit timeUnit) Continues a temporal transformation. Defines the window size on which the two DataStreams will be transformed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

input1

public final DataStream<I1> input1

input2

public final DataStream<I2> input2

windowSize

public long windowSize

slideInterval

public long slideInterval

timeStamp1

public TimestampWrapper<I1> timeStamp1

timeStamp2

public TimestampWrapper<I2> timeStamp2

Constructor Detail

TemporalOperator

public TemporalOperator(DataStream<I1> input1,
                        DataStream<I2> input2)

Method Detail

onWindow

public OP onWindow(long length,
                   TimeUnit timeUnit)

Continues a temporal transformation.
Defines the window size on which the two DataStreams will be transformed. To define sliding windows call TemporalWindow.every(long, java.util.concurrent.TimeUnit) on the resulting operator.

Parameters:

length - The size of the window in milliseconds.

timeUnit - The unit if time to be used

Returns:

An incomplete temporal transformation.

onWindow

public OP onWindow(long length,
                   Timestamp<I1> timeStamp1,
                   Timestamp<I2> timeStamp2)

Continues a temporal transformation.
Defines the window size on which the two DataStreams will be transformed.To define sliding windows call TemporalWindow.every(long, java.util.concurrent.TimeUnit) on the resulting operator.

Parameters:

length - The size of the window in milliseconds.

timeStamp1 - The timestamp used to extract time from the elements of the first data stream.

timeStamp2 - The timestamp used to extract time from the elements of the second data stream.

Returns:

An incomplete temporal transformation.

onWindow

public OP onWindow(long length,
                   Timestamp<I1> timeStamp1,
                   Timestamp<I2> timeStamp2,
                   long startTime)

Continues a temporal transformation.
Defines the window size on which the two DataStreams will be transformed.To define sliding windows call TemporalWindow.every(long, java.util.concurrent.TimeUnit) on the resulting operator.

Parameters:

length - The size of the window in milliseconds.

timeStamp1 - The timestamp used to extract time from the elements of the first data stream.

timeStamp2 - The timestamp used to extract time from the elements of the second data stream.

startTime - The start time to measure the first window

Returns:

An incomplete temporal transformation.

createNextWindowOperator

protected abstract OP createNextWindowOperator()