com.twitter.storehaus.algebra

MergeableMonoidStore

class MergeableMonoidStore[-K, V] extends MergeableStoreViaGetPut[K, V]

Uses the monoid and filters zeros on put. On get, empty is replaced with Monoid.zero. This store never returns Future.None. The design choice of never returning None is to make sure users do not mistake zero for meaning empty. Clearly, we cannot tell the difference, but returning zero is assumed to make it less likely the user thinks the key is absent (which this store can never confirm).

Linear Supertypes
MergeableStoreViaGetPut[K, V], MergeableStoreViaSingleGetPut[K, V], MergeableStore[K, V], Mergeable[K, V], Store[K, V], WritableStore[K, Option[V]], ReadableStore[K, V], Closable, AnyRef, Any
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Inherited
  1. MergeableMonoidStore
  2. MergeableStoreViaGetPut
  3. MergeableStoreViaSingleGetPut
  4. MergeableStore
  5. Mergeable
  6. Store
  7. WritableStore
  8. ReadableStore
  9. Closable
  10. AnyRef
  11. Any
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Visibility
  1. Public
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Instance Constructors

  1. new MergeableMonoidStore(store: Store[K, V], fc: FutureCollector[(K, Option[V])] = ...)(implicit arg0: Monoid[V])

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  8. def close(time: Time): Future[Unit]

    Close this store and release any resources.

    Close this store and release any resources. It is undefined what happens if you merge after close

    Definition Classes
    Mergeable → Closable

  9. def close(after: Duration): Future[Unit]

    Definition Classes
    Closable

  10. final def close(): Future[Unit]

    Definition Classes
    Closable

  11. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  12. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  13. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  14. def get(k: K): Future[Some[V]]

    Definition Classes
    MergeableMonoidStore → MergeableStoreViaSingleGetPut → ReadableStore

  15. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  16. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  17. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  18. def merge(kv: (K, V)): Future[Option[V]]

    sets to .

    sets to .plus(get(kv._1).get.getOrElse(monoid.zero), kv._2) but maybe more efficient implementations

    Definition Classes
    MergeableStoreViaSingleGetPut → Mergeable

  19. def multiGet[K1 <: K](ks: Set[K1]): Map[K1, Future[Option[V]]]

    Definition Classes
    MergeableMonoidStore → MergeableStoreViaGetPut → ReadableStore

  20. def multiMerge[K1 <: K](kvs: Map[K1, V]): Map[K1, Future[Option[V]]]

    merge a set of keys.

    merge a set of keys.

    Definition Classes
    MergeableStoreViaGetPut → Mergeable

  21. def multiPut[K1 <: K](kvs: Map[K1, Option[V]]): Map[K1, Future[Unit]]

    Definition Classes
    MergeableMonoidStore → MergeableStoreViaGetPut → WritableStore

  22. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  23. final def notify(): Unit

    Definition Classes
    AnyRef

  24. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  25. def put(kv: (K, Option[V])): Future[Unit]

    Definition Classes
    MergeableMonoidStore → MergeableStoreViaSingleGetPut → WritableStore

  26. def semigroup: Semigroup[V]

    The semigroup equivalent to the merge operation of this store

    The semigroup equivalent to the merge operation of this store

    Definition Classes
    MergeableMonoidStore → MergeableStoreViaSingleGetPut → Mergeable

  27. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  28. def toString(): String

    Definition Classes
    AnyRef → Any

  29. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  30. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  31. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from MergeableStoreViaGetPut[K, V]

Inherited from MergeableStoreViaSingleGetPut[K, V]

Inherited from MergeableStore[K, V]

Inherited from Mergeable[K, V]

Inherited from Store[K, V]

Inherited from WritableStore[K, Option[V]]

Inherited from ReadableStore[K, V]

Inherited from Closable

Inherited from AnyRef

Inherited from Any

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