CacheUnit

All Known Implementing Classes:: AbstractCacheUnit, BPlusInternalNode, BPlusLeaf, BPlusLeafIndex, BPlusLeafRecords, BPlusNode, CacheAnchor, CachedJoinResult, CompressedBPlusNode, InternalCachedJsonResult, InternalCachedTripleResult, MainMemorySubRelation, MixedRelation, SwappableBufferedIncrementalRelation, SwappableIncrementalRelation, SwappableRelation

public interface CacheUnit

Author:: angele

Method Summary

Modifier and Type

Method

Description

void

destroy()

free up ressources at the end (CacheManager.clear)

CacheUnit

getLast()

CacheUnit

getNext()

boolean

isReleasable()

is this unit releasable

void

release()

Cache management calls this method to release the cache unit.

void

setLast(CacheUnit last)

void

setNext(CacheUnit next)

pointers in a list for cache management

long

sizeInBytes()

releases this number of bytes

void

touch()

touch a cache unit.

Method Details
- touch
  
  void touch() throws IOException, EDBException
  
  touch a cache unit.
  this means for cache management that this unit
  will be used and has a lower prio to be released
  
  Throws:
  
  IOException
  
  EDBException
- setNext
  
  void setNext(CacheUnit next)
  
  pointers in a list for cache management
  
  Parameters:
  
  next -
- getNext
  
  CacheUnit getNext()
- setLast
  
  void setLast(CacheUnit last)
- getLast
  
  CacheUnit getLast()
- release
  
  void release() throws IOException, EDBException
  
  Cache management calls this method to release the cache unit.
  
  Throws:
  
  IOException
  
  EDBException
- isReleasable
  
  boolean isReleasable() throws IOException
  
  is this unit releasable
  
  Returns:
  
  Throws:
  
  IOException
- sizeInBytes
  
  long sizeInBytes()
  
  releases this number of bytes
  
  Returns:
- destroy
  
  void destroy() throws IOException, EDBException
  
  free up ressources at the end (CacheManager.clear)
  
  Throws:
  
  IOException
  
  EDBException