Package org.apache.kafka.streams

Class StoreQueryParameters<T>

java.lang.Object
org.apache.kafka.streams.StoreQueryParameters<T>
public class StoreQueryParameters<T>
extends Object
StoreQueryParameters allows you to pass a variety of parameters when fetching a store for interactive query.

  • Method Details

    • fromNameAndType

      public static <T> StoreQueryParameters<T> fromNameAndType​(String storeName, QueryableStoreType<T> queryableStoreType)

    • withPartition

      public StoreQueryParameters<T> withPartition​(Integer partition)
      Set a specific partition that should be queried exclusively.
      Parameters:
      partition - The specific integer partition to be fetched from the stores list by using StoreQueryParameters.
      Returns:
      StoreQueryParameters a new StoreQueryParameters instance configured with the specified partition

    • enableStaleStores

      public StoreQueryParameters<T> enableStaleStores()
      Enable querying of stale state stores, i.e., allow to query active tasks during restore as well as standby tasks.
      Returns:
      StoreQueryParameters a new StoreQueryParameters instance configured with serving from stale stores enabled

    • storeName

      public String storeName()
      Get the name of the state store that should be queried.
      Returns:
      String state store name

    • queryableStoreType

      public QueryableStoreType<T> queryableStoreType()
      Get the queryable store type for which key is queried by the user.
      Returns:
      QueryableStoreType type of queryable store

    • partition

      public Integer partition()
      Get the store partition that will be queried. If the method returns null, it would mean that no specific partition has been requested, so all the local partitions for the store will be queried.
      Returns:
      Integer partition

    • staleStoresEnabled

      public boolean staleStoresEnabled()
      Get the flag staleStores. If true, include standbys and recovering stores along with running stores.
      Returns:
      boolean staleStores

    • equals

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

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object