Package org.apache.kafka.streams.kstream

Class Windowed<K>

  • Type Parameters:
    K - type of the key
    public class Windowed<K>
extends java.lang.Object
    The result key type of a windowed stream aggregation.

    If a KStream gets grouped and aggregated using a window-aggregation the resulting KTable is a so-called "windowed KTable" with a combined key type that encodes the corresponding aggregation window and the original record key. Thus, a windowed KTable has type <Windowed<K>,V>.

    See Also:
    KGroupedStream.windowedBy(Windows), KGroupedStream.windowedBy(SessionWindows)

    • Constructor Summary

      Constructors 
      Constructor Description
      Windowed​(K key, Window window)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(java.lang.Object obj)  
      int hashCode()  
      K key()
      Return the key of the window.
      java.lang.String toString()  
      Window window()
      Return the window containing the values associated with this key.

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • Windowed

        public Windowed​(K key,
                Window window)

    • Method Detail

      • key

        public K key()
        Return the key of the window.
        Returns:
        the key of the window

      • window

        public Window window()
        Return the window containing the values associated with this key.
        Returns:
        the window containing the values

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • equals

        public boolean equals​(java.lang.Object obj)
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object