Cache (Bio-Formats API)

java.lang.Object
- loci.formats.cache.Cache

All Implemented Interfaces:

CacheReporter
```
public class Cache
extends Object
implements CacheReporter
```
Cache provides a means of managing subsets of large collections of image planes in memory. Each cache has a source, which provides image planes or other objects from somewhere (typically derived from an IFormatReader), and a strategy dictating which image planes should be loaded into the cache, in which order, and which planes should be dropped from the cache. The essence of the logic is the idea that the cache has a "current" position across the multidimensional image series's dimensional axes, with the strategy indicating which surrounding planes to load into the cache (i.e., planes within a certain range along each dimensional axis).

Field Summary

Fields
Modifier and Type	Field and Description
`protected boolean`	`autoUpdate` Whether the cache should automatically update when a parameter changes.
`protected Object[]`	`cache` Master array containing cached objects.
`protected int[]`	`currentPos` Current dimensional position.
`protected boolean[]`	`inCache` Whether each position is currently supposed to be cached.
`protected Vector<CacheListener>`	`listeners` List of cache event listeners.
`protected ICacheSource`	`source` Current cache source.
`protected ICacheStrategy`	`strategy` Current cache strategy.

Constructor Summary

Constructors
Constructor and Description
`Cache(ICacheStrategy strategy, ICacheSource source, boolean autoUpdate)` Constructs an object cache with the given cache strategy and source.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addCacheListener(CacheListener l)` Adds a listener for status update events.
`CacheListener[]`	`getCacheListeners()` Gets a list of all registered status update listeners.
`int[]`	`getCurrentPos()` Gets the current dimensional position.
`Object`	`getObject(int[] pos)` Gets the cached object at the given dimensional position.
`ICacheSource`	`getSource()` Gets the cache's caching source.
`ICacheStrategy`	`getStrategy()` Gets the cache's caching strategy.
`boolean`	`isInCache(int pos)` Returns true if the object at the given index is in the cache.
`boolean`	`isInCache(int[] pos)` Returns true if the object at the given dimensional position is in the cache.
`protected void`	`notifyListeners(CacheEvent e)` Informs listeners of a cache update.
`void`	`recache()` Updates all planes on the load list.
`void`	`recache(int n)` Updates the given plane.
`void`	`removeCacheListener(CacheListener l)` Removes a listener for status update events.
`void`	`reset()` Reallocates the cache.
`void`	`setCurrentPos(int[] pos)` Sets the current dimensional position.
`void`	`setSource(ICacheSource source)` Sets the cache's caching source.
`void`	`setStrategy(ICacheStrategy strategy)` Sets the cache's caching strategy.

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

- Field Detail
  - strategy
```
protected ICacheStrategy strategy
```
    Current cache strategy.
  - source
```
protected ICacheSource source
```
    Current cache source.
  - currentPos
```
protected int[] currentPos
```
    Current dimensional position.
  - cache
```
protected Object[] cache
```
    Master array containing cached objects.
  - inCache
```
protected boolean[] inCache
```
    Whether each position is currently supposed to be cached.
  - listeners
```
protected Vector<CacheListener> listeners
```
    List of cache event listeners.
  - autoUpdate
```
protected boolean autoUpdate
```
    Whether the cache should automatically update when a parameter changes.
- Constructor Detail
  - Cache
```
public Cache(ICacheStrategy strategy,
             ICacheSource source,
             boolean autoUpdate)
      throws CacheException
```
    Constructs an object cache with the given cache strategy and source.
    
    Throws:
    
    CacheException
- Method Detail
  - getObject
```
public Object getObject(int[] pos)
                 throws CacheException
```
    Gets the cached object at the given dimensional position.
    
    Throws:
    
    CacheException
  - isInCache
```
public boolean isInCache(int[] pos)
                  throws CacheException
```
    Returns true if the object at the given dimensional position is in the cache.
    
    Throws:
    
    CacheException
  - isInCache
```
public boolean isInCache(int pos)
                  throws CacheException
```
    Returns true if the object at the given index is in the cache.
    
    Throws:
    
    CacheException
  - reset
```
public void reset()
           throws CacheException
```
    Reallocates the cache.
    
    Throws:
    
    CacheException
  - getStrategy
```
public ICacheStrategy getStrategy()
```
    Gets the cache's caching strategy.
  - getSource
```
public ICacheSource getSource()
```
    Gets the cache's caching source.
  - getCurrentPos
```
public int[] getCurrentPos()
```
    Gets the current dimensional position.
  - setStrategy
```
public void setStrategy(ICacheStrategy strategy)
                 throws CacheException
```
    Sets the cache's caching strategy.
    
    Throws:
    
    CacheException
  - setSource
```
public void setSource(ICacheSource source)
               throws CacheException
```
    Sets the cache's caching source.
    
    Throws:
    
    CacheException
  - setCurrentPos
```
public void setCurrentPos(int[] pos)
                   throws CacheException
```
    Sets the current dimensional position.
    
    Throws:
    
    CacheException
  - recache
```
public void recache(int n)
             throws CacheException
```
    Updates the given plane.
    
    Throws:
    
    CacheException
  - recache
```
public void recache()
             throws CacheException
```
    Updates all planes on the load list.
    
    Throws:
    
    CacheException
  - addCacheListener
```
public void addCacheListener(CacheListener l)
```
    Description copied from interface: CacheReporter
    
    Adds a listener for status update events.
    
    Specified by:
    
    addCacheListener in interface CacheReporter
  - removeCacheListener
```
public void removeCacheListener(CacheListener l)
```
    Description copied from interface: CacheReporter
    
    Removes a listener for status update events.
    
    Specified by:
    
    removeCacheListener in interface CacheReporter
  - getCacheListeners
```
public CacheListener[] getCacheListeners()
```
    Description copied from interface: CacheReporter
    
    Gets a list of all registered status update listeners.
    
    Specified by:
    
    getCacheListeners in interface CacheReporter
  - notifyListeners
```
protected void notifyListeners(CacheEvent e)
```
    Informs listeners of a cache update.

Class Cache

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

strategy

source

currentPos

cache

inCache

listeners

autoUpdate

Constructor Detail

Cache

Method Detail

getObject

isInCache

isInCache

reset

getStrategy

getSource

getCurrentPos

setStrategy

setSource

setCurrentPos

recache

recache

addCacheListener

removeCacheListener

getCacheListeners

notifyListeners