Package com.fluxtion.ext.streaming.api.stream

Interface StreamOperator

public interface StreamOperator
An interface defining stream operations on a node in a SEP graph. The ServiceLoader mechanism is used to load an implementation at runtime for the StreamOperator interface.
Author:
V12 Technology Ltd.

  • Method Summary

    Modifier and Type Method Description
    default <T,​ I extends java.lang.Integer>
    java.util.Comparator<T>    		 comparing​(com.fluxtion.api.partition.LambdaReflection.SerializableBiFunction<T,​T,​I> func)  
    default <T> Wrapper<T> defaultVal​(Wrapper<T> source, T defaultValue)  
    default <T> FilterWrapper<T> filter​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<? extends T,​java.lang.Boolean> filter, Wrapper<T> source, boolean cast)  
    default <S,​ T> FilterWrapper<T> filter​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<S,​java.lang.Boolean> filter, Wrapper<T> source, java.lang.reflect.Method accessor, boolean cast)  
    default <T,​ S extends T>
    Wrapper<T>    		 forEach​(com.fluxtion.api.partition.LambdaReflection.SerializableConsumer<S> consumer, Wrapper<T> source, java.lang.String consumerId)
    Supply the wrapper to a consumer when the wrapper is on the execution path
    default <T,​ R> Wrapper<R> get​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source)
    Streams the return of a method as a wrapped instance.
    default <K,​ T,​ S extends java.lang.Number,​ F extends NumericFunctionStateless,​ R extends java.lang.Number>
    GroupBy<R>    		 group​(Wrapper<T> source, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​K> key, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​S> supplier, java.lang.Class<F> functionClass)  
    default <T,​ S extends java.lang.Number,​ F extends NumericFunctionStateless,​ R extends java.lang.Number>
    GroupBy<R>    		 group​(Wrapper<T> source, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​S> key, java.lang.Class<F> functionClass)  
    default <T> Wrapper<T> log​(Wrapper<T> source, java.lang.String message, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​?>... supplier)  
    default <T,​ R> WrapperBase<T,​?> log​(WrapperBase<T,​?> source, java.lang.String message, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​?>... supplier)  
    default <R,​ S,​ U> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableBiFunction<? extends U,​? extends S,​R> mapper, Argument<? extends U> arg1, Argument<? extends S> arg2)  
    default <T,​ R> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source, boolean cast)  
    default <T,​ R> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source, java.lang.reflect.Method accessor, boolean cast)  
    default <F,​ R> Wrapper<R> map​(F mapper, java.lang.reflect.Method mappingMethod, Argument... args)  
    default <T> T nodeId​(T node, java.lang.String name)
    name a StreamOperator node in the generated SEP.
    default <T> Wrapper<T> notiferMerge​(Wrapper<T> source, java.lang.Object notifier)
    Attaches an event notification instance to the current stream node and merges notifications from stream and the added notifier.When the notifier updates all the child nodes of this stream node will be on the execution path and invoked following normal SEP rules.The existing execution path will be unaltered if either the parent wrapped node or the eventNotifier updates then the execution path will progress.
    default <T> Wrapper<T> notifierOverride​(Wrapper<T> source, java.lang.Object notifier)
    Attaches an event notification instance to the current stream node, overriding the execution path of the current stream.Only when the notifier updates will the child nodes of this stream node be on the execution path.
    default <T,​ R> void push​(Wrapper<T> source, java.lang.reflect.Method accessor, com.fluxtion.api.partition.LambdaReflection.SerializableConsumer<R> consumer)
    push data from the wrapper to the consumer
    default <T> Wrapper<T> select​(java.lang.Class<T> eventClazz)  
    static StreamOperator service()  
    default <S> Wrapper<S> streamInstance​(com.fluxtion.api.partition.LambdaReflection.SerializableSupplier<S> source)  

  • Method Details

    • select

      default <T> Wrapper<T> select​(java.lang.Class<T> eventClazz)

    • filter

      default <S,​ T> FilterWrapper<T> filter​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<S,​java.lang.Boolean> filter, Wrapper<T> source, java.lang.reflect.Method accessor, boolean cast)

    • filter

      default <T> FilterWrapper<T> filter​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<? extends T,​java.lang.Boolean> filter, Wrapper<T> source, boolean cast)

    • group

      default <T,​ S extends java.lang.Number,​ F extends NumericFunctionStateless,​ R extends java.lang.Number> GroupBy<R> group​(Wrapper<T> source, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​S> key, java.lang.Class<F> functionClass)

    • group

      default <K,​ T,​ S extends java.lang.Number,​ F extends NumericFunctionStateless,​ R extends java.lang.Number> GroupBy<R> group​(Wrapper<T> source, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​K> key, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​S> supplier, java.lang.Class<F> functionClass)

    • streamInstance

      default <S> Wrapper<S> streamInstance​(com.fluxtion.api.partition.LambdaReflection.SerializableSupplier<S> source)

    • get

      default <T,​ R> Wrapper<R> get​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source)
      Streams the return of a method as a wrapped instance.
      Type Parameters:
      T -
      R -
      Parameters:
      mapper -
      source -
      Returns:

    • map

      default <T,​ R> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source, boolean cast)

    • map

      default <T,​ R> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​R> mapper, Wrapper<T> source, java.lang.reflect.Method accessor, boolean cast)

    • map

      default <R,​ S,​ U> Wrapper<R> map​(com.fluxtion.api.partition.LambdaReflection.SerializableBiFunction<? extends U,​? extends S,​R> mapper, Argument<? extends U> arg1, Argument<? extends S> arg2)

    • map

      default <F,​ R> Wrapper<R> map​(F mapper, java.lang.reflect.Method mappingMethod, Argument... args)

    • push

      default <T,​ R> void push​(Wrapper<T> source, java.lang.reflect.Method accessor, com.fluxtion.api.partition.LambdaReflection.SerializableConsumer<R> consumer)
      push data from the wrapper to the consumer
      Type Parameters:
      T -
      R -
      Parameters:
      source -
      accessor -
      consumer -

    • forEach

      default <T,​ S extends T> Wrapper<T> forEach​(com.fluxtion.api.partition.LambdaReflection.SerializableConsumer<S> consumer, Wrapper<T> source, java.lang.String consumerId)
      Supply the wrapper to a consumer when the wrapper is on the execution path
      Type Parameters:
      T -
      S -
      Parameters:
      consumer -
      source -
      consumerId - - id for node in SEP, can be null for autonaming
      Returns:

    • log

      default <T> Wrapper<T> log​(Wrapper<T> source, java.lang.String message, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​?>... supplier)

    • log

      default <T,​ R> WrapperBase<T,​?> log​(WrapperBase<T,​?> source, java.lang.String message, com.fluxtion.api.partition.LambdaReflection.SerializableFunction<T,​?>... supplier)

    • notiferMerge

      default <T> Wrapper<T> notiferMerge​(Wrapper<T> source, java.lang.Object notifier)
      Attaches an event notification instance to the current stream node and merges notifications from stream and the added notifier.When the notifier updates all the child nodes of this stream node will be on the execution path and invoked following normal SEP rules.The existing execution path will be unaltered if either the parent wrapped node or the eventNotifier updates then the execution path will progress.
      Type Parameters:
      T -
      Parameters:
      source -
      notifier -
      Returns:

    • notifierOverride

      default <T> Wrapper<T> notifierOverride​(Wrapper<T> source, java.lang.Object notifier)
      Attaches an event notification instance to the current stream node, overriding the execution path of the current stream.Only when the notifier updates will the child nodes of this stream node be on the execution path.
      Type Parameters:
      T -
      Parameters:
      source -
      notifier - external event notifier
      Returns:

    • nodeId

      default <T> T nodeId​(T node, java.lang.String name)
      name a StreamOperator node in the generated SEP.
      Type Parameters:
      T -
      Parameters:
      node -
      name -
      Returns:

    • comparing

      default <T,​ I extends java.lang.Integer> java.util.Comparator<T> comparing​(com.fluxtion.api.partition.LambdaReflection.SerializableBiFunction<T,​T,​I> func)

    • defaultVal

      default <T> Wrapper<T> defaultVal​(Wrapper<T> source, T defaultValue)

    • service

      static StreamOperator service()