41. EPMO Open Source Coordination Office Redaction File Detail Report

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41.1 Files compared

#	Location	File	Last Modified
1	IV-eHMP_CIF.zip\IMAG_Source\VISA\Java\CacheAPI\main\src\java\gov\va\med\imaging\storage\cache\impl\eviction	EvictionStrategyFactory.java	Mon Dec 4 21:35:30 2017 UTC
2	IV-eHMP_CIF.zip\IMAG_Source\VISA\Java\CacheAPI\main\src\java\gov\va\med\imaging\storage\cache\impl\eviction	EvictionStrategyFactory.java	Mon Dec 4 21:57:24 2017 UTC

41.2 Comparison summary

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Unchanged	2	336
Changed	1	2
Inserted	0	0
Removed	0	0

41.3 Comparison options

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41.4 Active regular expressions

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41.5 Comparison detail

	1	/**
	2	*
	3	*/
	4	package go v.va.med.i maging.sto rage.cache .impl.evic tion;
	5
	6	import gov .va.med.im aging.stor age.cache. EvictionSt rategy;
	7	import gov .va.med.im aging.stor age.cache. EvictionTi mer;
	8	import gov .va.med.im aging.stor age.cache. exceptions .CacheExce ption;
	9	import gov .va.med.im aging.stor age.cache. memento.Ev ictionStra tegyMement o;
	10
	11	import jav a.util.Has hMap;
	12	import jav a.util.Map ;
	13
	14	import org .apache.lo gging.log4 j.LogManag er;
	15	import org .apache.lo gging.log4 j.Logger;
	16
	17	/**
	18	* @author BECKEC
	19	*
	20	* A facto ry class f or creatin g Eviction Strategie s. There is one Evi ctionStrat egyFactory per VM,
	21	* i.e. a Singleton.
	22	*
	23	*/
	24	public cla ss Evictio nStrategyF actory
	25	{
	26	pu blic final static St ring evict ionStrateg yClassname Key = "evi ctionStrat egyClassna me";
	27
	28	pr ivate stat ic Evictio nStrategyF actory sin gleton;
	29
	30	pr ivate Logg er logger = LogManag er.getLogg er(this.ge tClass());
	31
	32	// the list of all kno wn evictio n strategy classes a nd the mem ento
	33	// classes r equired to create th em
	34	pr ivate Map< Class<? ex tends Evic tionStrate gy>, Class <? extends EvictionS trategyMem ento>> evi ctionStrat egiesMap = null;
	35
	36	pu blic stati c synchron ized Evict ionStrateg yFactory g etSingleto n()
	37	{
	38	if(s ingleton = = null)
	39	{
	40	single ton = new EvictionSt rategyFact ory();
	41	}
	42	retu rn singlet on;
	43	}
	44
	45	/* *
	46	* Get (and possibly p opulate) t he known e viction st rategies m ap.
	47	* @return
	48	* /
	49	pu blic synch ronized Ma p<Class<? extends Ev ictionStra tegy>, Cla ss<? exten ds Evictio nStrategyM emento>> g etKnownEvi ctionStrat egies()
	50	{
	51	if(e victionStr ategiesMap == null)
	52	{
	53	evicti onStrategi esMap = ne w HashMap< Class<? ex tends Evic tionStrate gy>, Class <? extends EvictionS trategyMem ento>>();
	54
	55	evicti onStrategi esMap.put( SimpleEvic tionStrate gy.class, SimpleEvic tionStrate gyMemento. class);
	56	evicti onStrategi esMap.put( StorageThr esholdEvic tionStrate gy.class, StorageThr esholdEvic tionStrate gyMemento. class);
	57	evicti onStrategi esMap.put( LastAccess edEviction Strategy.c lass, Last AccessedEv ictionStra tegyMement o.class);
	58
	59	}
	60	retu rn evictio nStrategie sMap;
	61	}
	62
	63	/* *
	64	* Get an ar ray lising all of th e known ev iction str ategy name s.
	65	*
	66	* @return
	67	* /
	68	pu blic Strin g[] getKno wnEviction StrategyNa mes()
	69	{
	70	Stri ng[] strat egyNames = new Strin g[getKnown EvictionSt rategies() .keySet(). size()];
	71	int index = 0;
	72
	73	for( Class<? ex tends Evic tionStrate gy> strate gyClass : getKnownEv ictionStra tegies().k eySet())
	74	strate gyNames[in dex++] = s trategyCla ss.getName ();
	75
	76	retu rn strateg yNames;
	77	}
	78
	79	/* *
	80	* Return th e eviction strategy Class with the given name. Th e name mus t be one o f those
	81	* returned by @see {@ link #getK nownEvicti onStrategy Names()}
	82	*
	83	* @param ev ictionStra tegyClassn ame
	84	* @return
	85	* /
	86	pu blic Class <? extends EvictionS trategy> f indEvictio nStrategyC lassByName (String ev ictionStra tegyClassn ame)
	87	{
	88	if(e victionStr ategyClass name == nu ll)
	89	return null;
	90
	91	for( Class<? ex tends Evic tionStrate gy> evicti onStrategy Class : ge tKnownEvic tionStrate gies().key Set())
	92	{
	93	if( e victionStr ategyClass name.equal s(eviction StrategyCl ass.getNam e()) \|\|
	94	evictionSt rategyClas sname.equa ls(evictio nStrategyC lass.getSi mpleName() ) )
	95	return e victionStr ategyClass ;
	96	}
	97	retu rn null;
	98	}
	99
	100	/* *
	101	* Return th e memento class thet the evict ion strate gy class w iththe giv en name pr oduces, an d
	102	* is instan tiable fro m. The na me must be one of th ose return ed by @see {@link #g etKnownEvi ctionStrat egyNames() }
	103	*
	104	* @param ev ictionstra tegyClassn ame
	105	* @return
	106	* /
	107	pr ivate Clas s<? extend s Eviction StrategyMe mento> fin dEvictionS trategyMem entoClassB yName(Stri ng evictio nStrategyC lassname)
	108	{
	109	Clas s<? extend s Eviction Strategy> evictionSt rategyClas s = findEv ictionStra tegyClassB yName(evic tionStrate gyClassnam e);
	110
	111	if(e victionStr ategyClass == null)
	112	return null;
	113
	114
	115	retu rn getKnow nEvictionS trategies( ).get(evic tionStrate gyClass);
	116	}
	117
	118	/* *
	119	* Create a blank meme nto for th e given ev iction str ategy clas s name. T he name mu st be one of those
	120	* returned by @see {@ link #getK nownEvicti onStrategy Names()}
	121	*
	122	* @param ev ictionStra tegyClassn ame
	123	* @return
	124	* /
	125	pu blic Evict ionStrateg yMemento c reateBlank Memento(St ring evict ionStrateg yClassname )
	126	{
	127	Clas s mementoC lass = fin dEvictionS trategyMem entoClassB yName(evic tionStrate gyClassnam e);
	128	try
	129	{
	130	return (Eviction StrategyMe mento)meme ntoClass.n ewInstance ();
	131	}
	132	catc h (Instant iationExce ption x)
	133	{
	134	logger .error(x);
	135	return null;
	136	}
	137	catc h (Illegal AccessExce ption x)
	138	{
	139	logger .error(x);
	140	return null;
	141	}
	142	}
	143
	144	/* *
	145	* Create an eviction strategy i nstance fr om the giv en memento . The typ e of the m emento ins tance
	146	* determine s the evic tion strat egy type r eturned.
	147	*
	148	* @param me mento
	149	* @param ti mer
	150	* @return
	151	* @throws C acheExcept ion
	152	* /
	153	pu blic Evict ionStrateg y createEv ictionStra tegy(Evict ionStrateg yMemento m emento, Ev ictionTime r timer)
	154	th rows Cache Exception
	155	{
	156	// W ARNING: or dering of comparison s is signi ficant bec ause the
	157	// m emento cla sses may d erive from one anoth er
	158	if(m emento ins tanceof La stAccessed EvictionSt rategyMeme nto)
	159	return LastAcces sedEvictio nStrategy. create((La stAccessed EvictionSt rategyMeme nto)mement o, timer);
	160
	161	if(m emento ins tanceof St orageThres holdEvicti onStrategy Memento)
	162	return StorageTh resholdEvi ctionStrat egy.create ((StorageT hresholdEv ictionStra tegyMement o)memento, timer);
	163
	164	if(m emento ins tanceof Si mpleEvicti onStrategy Memento)
	165	return SimpleEvi ctionStrat egy.create ((SimpleEv ictionStra tegyMement o)memento) ;
	166
	167	retu rn null;
	168	}
	169	}