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# | Location | File | Last Modified |
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1 | VIX_SIV_v3_0_patch_201_build_8.zip\v3.0_patch_201_build_8\VISA\Java\CacheImpl\main\src\resources\gov\va\med\server | CacheResourceReferenceFactory.java | Thu Oct 11 13:30:17 2018 UTC |
2 | VIX_SIV_v3_0_patch_201_build_8.zip\v3.0_patch_201_build_8\VISA\Java\CacheImpl\main\src\resources\gov\va\med\server | CacheResourceReferenceFactory.java | Wed Oct 17 18:44:07 2018 UTC |
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1 | package go v.va.med.s erver; | |
2 | ||
3 | import gov .va.med.im aging.stor age.cache. Cache; | |
4 | import gov .va.med.im aging.stor age.cache. CacheManag er; | |
5 | import gov .va.med.im aging.stor age.cache. exceptions .CacheExce ption; | |
6 | import gov .va.med.im aging.stor age.cache. impl.Cache ManagerImp l; | |
7 | ||
8 | import jav a.util.Has htable; | |
9 | ||
10 | import jav ax.managem ent.MBeanE xception; | |
11 | import jav ax.naming. Context; | |
12 | import jav ax.naming. Name; | |
13 | import jav ax.naming. Reference; | |
14 | import jav ax.naming. spi.Object Factory; | |
15 | ||
16 | import org .apache.lo gging.log4 j.LogManag er; | |
17 | import org .apache.lo gging.log4 j.Logger; | |
18 | ||
19 | /** | |
20 | * This cl ass implem ents the J NDI SPI Ob jectFactor y interfac e, providi ng a way | |
21 | * to crea te Cache i nstances a nd make th em availab le as | |
22 | * Resourc es. The ap p server m ay create many copie s of the c lass, howe ver only | |
23 | * one ins tance of t he cache ( and cache manager) s hould be c reated. | |
24 | * | |
25 | * @author PI I
|
|
26 | * | |
27 | */ | |
28 | public cla ss CacheRe sourceRefe renceFacto ry | |
29 | implements ObjectFac tory | |
30 | { | |
31 | pu blic final static St ring CACHE _MANAGER_N AME = "Cac heManager" ; | |
32 | pr ivate stat ic final L ogger logg er = LogMa nager.getL ogger(Cach eResourceR eferenceFa ctory.clas s); | |
33 | ||
34 | pu blic Cache ResourceRe ferenceFac tory() | |
35 | { | |
36 | try | |
37 | { | |
38 | regist erServerLi fecycleLis tener(); | |
39 | } | |
40 | catc h (MBeanEx ception e) | |
41 | { | |
42 | e.prin tStackTrac e(); | |
43 | throw new Except ionInIniti alizerErro r(); | |
44 | } | |
45 | catc h (CacheEx ception e) | |
46 | { | |
47 | e.prin tStackTrac e(); | |
48 | throw new Except ionInIniti alizerErro r(); | |
49 | } | |
50 | } | |
51 | ||
52 | pr ivate stat ic boolean lifecycle ListenerRe gistered = false; | |
53 | pr ivate stat ic synchro nized void registerS erverLifec ycleListen er() | |
54 | th rows MBean Exception, CacheExce ption | |
55 | { | |
56 | if( ! lifecycl eListenerR egistered) | |
57 | { | |
58 | Server AdapterImp l.getSingl eton().add ServerLife cycleListe ner( Cache ManagerImp l.getSingl eton() ); | |
59 | lifecy cleListene rRegistere d = true; | |
60 | } | |
61 | } | |
62 | ||
63 | /* * | |
64 | * @param ob j | |
65 | * The poss ibly null object con taining lo cation or reference | |
66 | * informat ion that c an be used in creati ng an obje ct | |
67 | * @param na me | |
68 | * The name of this o bject rela tive to <c ode>nameCt x</code> | |
69 | * @param na meCtx | |
70 | * The cont ext relati ve to whic h the <cod e>name</co de> parame ter | |
71 | * is speci fied, or < code>null< /code> if <code>name </code> is | |
72 | * relative to the de fault init ial contex t | |
73 | * @param en vironment | |
74 | * The poss ibly null environmen t that is used in cr eating thi s | |
75 | * object | |
76 | * | |
77 | * For the following element in server.xm l: <Resour ce | |
78 | * auth="Co ntainer" | |
79 | * descript ion="Core applicatio n (Spring) context" | |
80 | * name="Co reRouterCo ntext" | |
81 | * type="or g.springfr amework.co ntext.Appl icationCon text" | |
82 | * instance -name="Cor eRouterCon text" | |
83 | * factory= "gov.va.me d.server.t omcat.Core RouterCont extFactory " /> | |
84 | * | |
85 | * nameCts = 'org.apa che.naming .NamingCon text@787d6 a' | |
86 | * name.toS tring = 'I magingExch angeCache' | |
87 | * | |
88 | * Referenc e factory | |
89 | * classnam e[org.apac he.naming. factory.Re sourceFact ory], fact ory | |
90 | * class lo cation [nu ll] RefAdd r type [de scription] = [Cachin g | |
91 | * mechanis m for ViXS ] RefAddr type [scop e] = [Shar eable] Ref Addr | |
92 | * type [au th] = [Con tainer] Re fAddr type [factory] = | |
93 | * [gov.va. med.imagin g.storage. cache.impl .tomcat.Ca cheFactory ] | |
94 | * | |
95 | * javax.na ming.Name [.ImagingE xchangeCac he] | |
96 | * / | |
97 | @O verride | |
98 | pu blic Objec t getObjec tInstance( | |
99 | Obje ct obj, | |
100 | Name name, | |
101 | Cont ext nameCt x, | |
102 | Hash table<?, ? > environm ent) | |
103 | th rows Excep tion | |
104 | { | |
105 | // W e only kno w how to d eal with < code>javax .naming.Re ference</c ode>s | |
106 | // t hat specif y a class name of "g ov.va.med. imaging.st orage.cach e.Cache" | |
107 | if ( (obj == nu ll) || !(o bj instanc eof Refere nce)) | |
108 | return null; | |
109 | ||
110 | Refe rence refe rence = (R eference) obj; | |
111 | ||
112 | // T he propert ies of the Reference instance come from the server .xml | |
113 | // f ile, Resou rce elemen t: | |
114 | // < Resource | |
115 | // a uth="Conta iner" | |
116 | // d escription ="VIX Cach e" | |
117 | // n ame="Imagi ngExchange Cache" | |
118 | // s cope="Shar eable" | |
119 | // t ype="gov.v a.med.imag ing.storag e.cache.Ca che" | |
120 | // i nstance-na me="CoreRo uterContex t" | |
121 | // f actory="go v.va.med.i maging.sto rage.cache .impl.Cach eManagerIm pl"/> | |
122 | ||
123 | Stri ng referen ceClassNam e = refere nce.getCla ssName(); | |
124 | Clas s<?> refer enceClass = null; | |
125 | ||
126 | try | |
127 | { | |
128 | refere nceClass = reference ClassName == null ? null : Cla ss.forName (reference ClassName) ; | |
129 | } | |
130 | catc h (Excepti on e) | |
131 | { | |
132 | logger .warn("Una ble to val idate retu rned value is expect ed type '" | |
133 | + refere nceClassNa me | |
134 | + "', co ntinuing b ut ClassCa stExceptio ns may be thrown lat er."); | |
135 | } | |
136 | ||
137 | Cach eManager c acheManage r = CacheM anagerImpl .getSingle ton(); | |
138 | ||
139 | Stri ng cacheNa me = name. toString() ; | |
140 | if(C ACHE_MANAG ER_NAME.eq ualsIgnore Case(cache Name)) | |
141 | { | |
142 | logger .info("Ret urning ref erence to cache mana ger " | |
143 | + getCla ss().getSi mpleName() | |
144 | + " getO bjectInsta nce(Refere nce, '" + cacheName + "', '" | |
145 | + nameCt x.toString () + ", .. .) "); | |
146 | ||
147 | if(ref erenceClas s != null && !refere nceClass.i sInstance( cacheManag er) ) | |
148 | { | |
149 | logger.e rror("Retu rned value is NOT ex pected typ e '" | |
150 | + referenc eClassName | |
151 | + "', retu rning null ."); | |
152 | return n ull; | |
153 | } | |
154 | ||
155 | return cacheMana ger; | |
156 | } | |
157 | else | |
158 | { | |
159 | logger .info("Ret urning ref erence to cache inst ance " | |
160 | + getCla ss().getSi mpleName() | |
161 | + " getO bjectInsta nce(Refere nce, '" + cacheName + "', '" | |
162 | + nameCt x.toString () + ", .. .) "); | |
163 | ||
164 | Cache cache = ca cheManager .getCache( cacheName) ; | |
165 | ||
166 | if(ref erenceClas s != null && !refere nceClass.i sInstance( cache) ) | |
167 | { | |
168 | logger.e rror("Retu rned value is NOT ex pected typ e '" | |
169 | + referenc eClassName | |
170 | + "', retu rning null ."); | |
171 | return n ull; | |
172 | } | |
173 | ||
174 | return cache; | |
175 | } | |
176 | } | |
177 | } |
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