AbstractCacheUnit

java.lang.Object

com.semedy.reasoner.edb.persistentstore.AbstractCacheUnit

All Implemented Interfaces:: CacheUnit

Direct Known Subclasses:: CachedJoinResult, InternalCachedJsonResult, InternalCachedTripleResult, SwappableRelation

public abstract class AbstractCacheUnit extends Object implements CacheUnit

abstract cache unit

Author:: Angele

Constructor Summary

Constructors

Constructor

Description

AbstractCacheUnit()
Method Summary

Modifier and Type

Method

Description

CacheUnit

getLast()

CacheUnit

getNext()

abstract boolean

isReleasable()

is this unit releasable

abstract 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

abstract long

sizeInBytes()

releases this number of bytes

void

touch()

touch a cache unit.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.semedy.reasoner.edb.persistentstore.CacheUnit
destroy

Constructor Details
- AbstractCacheUnit
  
  public AbstractCacheUnit()
Method Details
- touch
  
  public void touch() throws IOException
  
  touch a cache unit.
  this means for cache management that this unit
  will be used and has a lower prio to be released
  
  Specified by:
  
  touch in interface CacheUnit
  
  Throws:
  
  IOException
- setNext
  
  public void setNext(CacheUnit next)
  
  pointers in a list for cache management
  
  Specified by:
  
  setNext in interface CacheUnit
  
  Parameters:
  
  next -
- getNext
  
  public CacheUnit getNext()
  
  Specified by:
  
  getNext in interface CacheUnit
- setLast
  
  public void setLast(CacheUnit last)
  
  Specified by:
  
  setLast in interface CacheUnit
- getLast
  
  public CacheUnit getLast()
  
  Specified by:
  
  getLast in interface CacheUnit
- release
  
  public abstract void release() throws IOException, EDBException
  
  Cache management calls this method to release the cache unit.
  
  Specified by:
  
  release in interface CacheUnit
  
  Throws:
  
  IOException
  
  EDBException
- isReleasable
  
  public abstract boolean isReleasable() throws IOException
  
  is this unit releasable
  
  Specified by:
  
  isReleasable in interface CacheUnit
  
  Returns:
  
  Throws:
  
  IOException
- sizeInBytes
  
  public abstract long sizeInBytes()
  
  releases this number of bytes
  
  Specified by:
  
  sizeInBytes in interface CacheUnit
  
  Returns: