CacheMapImpl

A cache map puts an in-memory transaction local cache in front of a persistent store. Entries written during the transaction are held in this cache for fast retrieval. But the cache serves a second purpose: In the confluent system, the write paths are incomplete during the transaction, as it is not known in advance whether a meld forces a new index tree to be generated or not. In this case, the implementation needs to gather this information during the transaction, and when the flush is performed, the new terminal version is appended before writing the cached entries to the persistent store.

S: the underlying system
K: the key type (typically Int for a variable map or Long for an identifier map)

Linear Supertypes

CacheMap[S, K, Store], Cache[S.Tx], AnyRef, Any

Known Subclasses

DurableCacheMapImpl, InMemoryCacheMapImpl, PartialCacheMapImpl

Abstract Value Members

abstract def removeCache(key: K, path: S.Acc)(implicit tx: S.Tx): Boolean

Definition Classes
CacheMap
abstract def store: Store

The persistent map to which the data is flushed or from which it is retrieved when not residing in cache.
The persistent map to which the data is flushed or from which it is retrieved when not residing in cache.

Definition Classes
CacheMap

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
final def cacheContains(key: K, path: Access[S])(implicit tx: S.Tx): Boolean

Definition Classes
CacheMapImpl → CacheMap
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def flushCache(term: Long)(implicit tx: S.Tx): Unit

This method should be invoked from the implementations flush hook after it has determined the terminal version at which the entries in the cache are written to the persistent store.
This method should be invoked from the implementations flush hook after it has determined the terminal version at which the entries in the cache are written to the persistent store. If this method is not called, the cache will just vanish and not be written out to the persistent store.
term
the new version to append to the paths in the cache (using the PathLike's addTerm method)
tx
the current transaction (should be in commit or right-before commit phase)

Definition Classes
CacheMapImpl → CacheMap → Cache
final def getCacheOnly[A](key: K, path: Access[S])(implicit tx: S.Tx): Option[A]

Definition Classes
CacheMapImpl → CacheMap
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def putCacheOnly(key: K, e: Entry[S, K, Store])(implicit tx: S.Tx): Unit

Attributes
protected
final def removeCacheOnly(key: K, path: Access[S])(implicit tx: S.Tx): Boolean

Removes an entry from the cache, and only the cache.
Removes an entry from the cache, and only the cache. This will not affect any values also persisted to persistent! If the cache does not contain an entry at the given key, this method simply returns.
key
key at which the entry is stored
tx
the current transaction

Definition Classes
CacheMapImpl → CacheMap
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object CacheMapImpl | package impl

sealed trait CacheMapImpl[S <: Sys[S], K, Store] extends CacheMap[S, K, Store]

Abstract Value Members

abstract def removeCache(key: K, path: S.Acc)(implicit tx: S.Tx): Boolean

abstract def store: Store

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

final def cacheContains(key: K, path: Access[S])(implicit tx: S.Tx): Boolean

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def flushCache(term: Long)(implicit tx: S.Tx): Unit

final def getCacheOnly[A](key: K, path: Access[S])(implicit tx: S.Tx): Option[A]

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def putCacheOnly(key: K, e: Entry[S, K, Store])(implicit tx: S.Tx): Unit

final def removeCacheOnly(key: K, path: Access[S])(implicit tx: S.Tx): Boolean

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

def toString(): String

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from CacheMap[S, K, Store]

Inherited from Cache[S.Tx]

Inherited from AnyRef

Inherited from Any

Ungrouped