dap4.servlet

Class DapCache

java.lang.Object

dap4.servlet.DapCache

public abstract class DapCache
extends Object

Provide an LRU cache of DSPs. The cache key is assumed to be the DSP object. The cache is synchronized to avoid race conditions. Note that we do not have to release because Java uses garbage collection and entries will be purged if the LRU cache is full.

Field Summary

Fields

Modifier and Type	Field and Description
protected static DSPFactory	factory
protected static List<DSP>	lru Define an lru cache of known DSP objects: oldest first.

Constructor Summary

Constructors

Constructor and Description
DapCache()

Method Summary

Methods

Modifier and Type	Method and Description
static void	flush()
static DSPFactory	getFactory()
static DSP	open(String path)
static void	setFactory(DSPFactory f)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

lru

protected static List<DSP> lru

Define an lru cache of known DSP objects: oldest first.

factory

protected static DSPFactory factory

Constructor Detail

DapCache

public DapCache()

Method Detail

setFactory

public static void setFactory(DSPFactory f)

getFactory

public static DSPFactory getFactory()

open

public static DSP open(String path)
                throws IOException

Throws:

IOException

flush

public static void flush()
                  throws Exception

Throws:

Exception