org.apache.flink.contrib.siddhi

Class SiddhiStream

java.lang.Object

org.apache.flink.contrib.siddhi.SiddhiStream

Direct Known Subclasses:

SiddhiStream.ExecutableStream

@PublicEvolving
public abstract class SiddhiStream
extends Object

Siddhi CEP Stream API

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SiddhiStream.ExecutableStream ExecutableStream context to define execution logic, i.e.
static class	SiddhiStream.ExecutionSiddhiStream
static class	SiddhiStream.SingleSiddhiStream<T> Initial Single Siddhi Stream Context
static class	SiddhiStream.UnionSiddhiStream<T>

Constructor Summary

Constructors

Constructor and Description
SiddhiStream(SiddhiCEP cepEnvironment)

Method Summary

Modifier and Type	Method and Description
protected <T> org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.api.java.tuple.Tuple2<String,Object>>	convertDataStream(org.apache.flink.streaming.api.datastream.DataStream<T> dataStream, String streamId) Convert DataStream<T> to DataStream<Tuple2<String,T>>.
protected SiddhiCEP	getCepEnvironment()
protected abstract org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.api.java.tuple.Tuple2<String,Object>>	toDataStream()

Methods inherited from class java.lang.Object

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

Constructor Detail

SiddhiStream

public SiddhiStream(SiddhiCEP cepEnvironment)

Parameters:

cepEnvironment - SiddhiCEP cepEnvironment.

Method Detail

getCepEnvironment

protected SiddhiCEP getCepEnvironment()

Returns:

current SiddhiCEP cepEnvironment.

toDataStream

protected abstract org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.api.java.tuple.Tuple2<String,Object>> toDataStream()

Returns:

Transform SiddhiStream to physical DataStream

convertDataStream

protected <T> org.apache.flink.streaming.api.datastream.DataStream<org.apache.flink.api.java.tuple.Tuple2<String,Object>> convertDataStream(org.apache.flink.streaming.api.datastream.DataStream<T> dataStream,
                                                                                                                                            String streamId)

Convert DataStream<T> to DataStream<Tuple2<String,T>>. If it's KeyedStream. pass through original keySelector