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| 1 | IV-eHMP_CIF.zip\IMAG_Source\VISA\Java\ImagingCommon\main\src\java\gov\va\med | ClassTranslator.java | Mon Dec 4 21:34:28 2017 UTC |
| 2 | IV-eHMP_CIF.zip\IMAG_Source\VISA\Java\ImagingCommon\main\src\java\gov\va\med | ClassTranslator.java | Mon Dec 4 22:01:47 2017 UTC |
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| 1 | /** | |
| 2 | * Package : MAG - Vi stA Imagin g | |
| 3 | * WARNING : Per VHA Directive 2004-038, this routi ne should not be mod ified. | |
| 4 | * @date J ul 28, 201 0 | |
| 5 | * Site Na me: Washi ngton OI F ield Offic e, Silver Spring, MD | |
| 6 | * @author vhaiswbec kec | |
| 7 | * @versio n 1.0 | |
| 8 | * | |
| 9 | * ------- ---------- ---------- ---------- ---------- ---------- ------- | |
| 10 | * Propert y of the U S Governme nt. | |
| 11 | * No perm ission to copy or re distribute this soft ware is gi ven. | |
| 12 | * Use of unreleased versions of this so ftware req uires the user | |
| 13 | * to exec ute a writ ten test a greement w ith the Vi stA Imagin g | |
| 14 | * Develop ment Offic e of the D epartment of Veteran s Affairs, | |
| 15 | * telepho ne (301) 7 34-0100. | |
| 16 | * | |
| 17 | * The Foo d and Drug Administr ation clas sifies thi s software as | |
| 18 | * a Class II medica l device. As such, it may not be change d | |
| 19 | * in any way. Modi fications to this so ftware may result in an | |
| 20 | * adulter ated medic al device under 21CF R820, the use of whi ch | |
| 21 | * is cons idered to be a viola tion of US Federal S tatutes. | |
| 22 | * ------- ---------- ---------- ---------- ---------- ---------- ------- | |
| 23 | */ | |
| 24 | ||
| 25 | package go v.va.med; | |
| 26 | ||
| 27 | import jav a.lang.ref lect.Metho d; | |
| 28 | import jav a.lang.ref lect.Modif ier; | |
| 29 | import jav a.util.Has hMap; | |
| 30 | import jav a.util.Map ; | |
| 31 | import org .apache.lo gging.log4 j.LogManag er; | |
| 32 | import org .apache.lo gging.log4 j.Logger; | |
| 33 | ||
| 34 | /** | |
| 35 | * A littl e helper t hat wraps up the ugl y casting and typing into a te mplated | |
| 36 | * class. To use thi s class cr eate an in stance wit h the targ et type sp ecified | |
| 37 | * for the template, e.g. Appl icationPro pertyAcces sor<Short> | |
| 38 | * shortPr opertyAcce ssor = new Applicati onProperty Accessor<S hort>("sho rtValue", | |
| 39 | * "parseS hort"); Th e method n ames shoul d be the m ethod to c onvert fro m other | |
| 40 | * base ty pes to the target ty pe and fro m a String to the ta rget type. | |
| 41 | * | |
| 42 | * For an example of usage, se e | |
| 43 | * | |
| 44 | * @see go v.va.med.i maging.tra nsactionco ntext.Tran sactionCon textProxyI nvocationH andler | |
| 45 | * | |
| 46 | * @author
|
|
| 47 | * | |
| 48 | * @param <SRC> - th e type of Object tha t we are c onverting from. | |
| 49 | * @param <DEST> - t he type of Object th at we are converting to. | |
| 50 | */ | |
| 51 | public cla ss ClassTr anslator<S RC, DEST> | |
| 52 | { | |
| 53 | pr ivate stat ic Logger logger = L ogManager. getLogger( ClassTrans lator.clas s); | |
| 54 | ||
| 55 | pr ivate stat ic final M ap<Convers ionMapKey, Method> c onversionM ethodMap; | |
| 56 | ||
| 57 | st atic | |
| 58 | { | |
| 59 | conv ersionMeth odMap = ne w HashMap< Conversion MapKey, Me thod>(); | |
| 60 | ||
| 61 | try | |
| 62 | { | |
| 63 | } | |
| 64 | catc h (Excepti on x) | |
| 65 | { | |
| 66 | logger .error(x); | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | pu blic stati c <SRC ext ends Objec t, DEST ex tends Obje ct> void a ddConversi onMethod(C lass<SRC> sourceClas s, Class<D EST> desti nationClas s, Method conversion Method) | |
| 71 | { | |
| 72 | conv ersionMeth odMap.put( new Conver sionMapKey (sourceCla ss, destin ationClass ), convers ionMethod) ; | |
| 73 | } | |
| 74 | ||
| 75 | pu blic stati c <SRC ext ends Objec t, DEST ex tends Obje ct> ClassT ranslator< SRC, DEST> create( | |
| 76 | Conv ersionMapK ey convers ionMapKey) | |
| 77 | { | |
| 78 | try | |
| 79 | { | |
| 80 | Method registere dMethod = conversion MethodMap. get(conver sionMapKey ); | |
| 81 | if(reg isteredMet hod != nul l) | |
| 82 | return n ew ClassTr anslator<S RC, DEST>( registere dMethod ); | |
| 83 | if(con versionMap Key.getSou rceClass() == String .class) | |
| 84 | return n ew ClassTr anslator<S RC, DEST>( conversio nMapKey.ge tDestinati onClass(). getMethod( "valueOf", conversio nMapKey.ge tSourceCla ss()) ); | |
| 85 | if(con versionMap Key.getDes tinationCl ass() == S tring.clas s) | |
| 86 | return n ew ClassTr anslator<S RC, DEST>( conversio nMapKey.ge tSourceCla ss().getMe thod("toSt ring", con versionMap Key.getDes tinationCl ass()) ); | |
| 87 | } | |
| 88 | catc h (Excepti on x) | |
| 89 | { | |
| 90 | logger .warn("Don 't know ho w to conve rt '" + co nversionMa pKey.getSo urceClass( ).getName( ) + "' to '" + conve rsionMapKe y.getDesti nationClas s().getNam e() + "'." ); | |
| 91 | // no conversion known, ju st return null | |
| 92 | } | |
| 93 | ||
| 94 | retu rn null; | |
| 95 | } | |
| 96 | ||
| 97 | pu blic stati c <SRC ext ends Objec t, DEST ex tends Obje ct> ClassT ranslator< SRC, DEST> create( | |
| 98 | Clas s<SRC> sou rceClass, | |
| 99 | Clas s<DEST> de stinationC lass) | |
| 100 | { | |
| 101 | retu rn create( new Conver sionMapKey (sourceCla ss, destin ationClass )); | |
| 102 | } | |
| 103 | ||
| 104 | // ========= ========== ========== ========== ========== ========== ========== ========== ========== ========== = | |
| 105 | // | |
| 106 | // ========= ========== ========== ========== ========== ========== ========== ========== ========== ========== = | |
| 107 | pr ivate fina l Method c onversionM ethod; | |
| 108 | pr ivate fina l boolean staticConv ersion; | |
| 109 | ||
| 110 | /* * | |
| 111 | * | |
| 112 | * / | |
| 113 | pu blic Class Translator (Method co nversionMe thod) | |
| 114 | { | |
| 115 | this .conversio nMethod = conversion Method; // the Met hod to con vert | |
| 116 | if( !Modifier. isPublic(t his.conver sionMethod .getModifi ers()) ) | |
| 117 | throw new Illega lArgumentE xception(" The method '" + conv ersionMeth od.getName () + "' mu st be a pu blic metho d and it i s not."); | |
| 118 | ||
| 119 | if( Modifier.i sStatic(th is.convers ionMethod. getModifie rs()) && c onversionM ethod.getP arameterTy pes().leng th == 1 ) | |
| 120 | static Conversion = true; | |
| 121 | else if( !Modi fier.isSta tic(this.c onversionM ethod.getM odifiers() ) && conve rsionMetho d.getParam eterTypes( ).length = = 0 ) | |
| 122 | static Conversion = false; | |
| 123 | else | |
| 124 | throw new Illega lArgumentE xception(" The method '" + conv ersionMeth od.getName () + "' mu st be eith er a stati c method t aking one parameter or an inst ance metho d taking n one."); | |
| 125 | } | |
| 126 | ||
| 127 | @S uppressWar nings("unc hecked") | |
| 128 | pu blic Objec t convert( Object val ue) | |
| 129 | { | |
| 130 | if ( value == n ull) | |
| 131 | return (DEST)nul l; | |
| 132 | ||
| 133 | Clas s<? extend s SRC>[] c onversionP arameterTy pes = (Cla ss<? exten ds SRC>[]) conversion Method.get ParameterT ypes(); | |
| 134 | ||
| 135 | try | |
| 136 | { | |
| 137 | // con verting fr om S to T usually me ans callin g | |
| 138 | // a p arse metho d | |
| 139 | if(con versionMet hod != nul l) | |
| 140 | { | |
| 141 | DEST con vertedValu e = (DEST) this.conve rsionMetho d.invoke( | |
| 142 | this.stati cConversio n ? null : value, | |
| 143 | this.stati cConversio n ? conver sionParame terTypes[0 ].cast(val ue) : (Obj ect[])null ); | |
| 144 | return c onvertedVa lue; | |
| 145 | } | |
| 146 | } | |
| 147 | catc h (ClassCa stExceptio n ccX) | |
| 148 | { | |
| 149 | logger .error(ccX ); | |
| 150 | } | |
| 151 | catc h (Excepti on e) | |
| 152 | { | |
| 153 | logger .warn(e); | |
| 154 | } | |
| 155 | ||
| 156 | retu rn (DEST)n ull; | |
| 157 | } | |
| 158 | ||
| 159 | /* * | |
| 160 | * | |
| 161 | * @author v haiswbecke c | |
| 162 | * | |
| 163 | * / | |
| 164 | st atic class Conversio nMapKey | |
| 165 | { | |
| 166 | priv ate final Class<?> s ourceClass ; | |
| 167 | priv ate final Class<?> d estination Class; | |
| 168 | ||
| 169 | publ ic Convers ionMapKey( Class<?> s ourceClass , Class<?> destinati onClass) | |
| 170 | { | |
| 171 | super( ); | |
| 172 | this.s ourceClass = sourceC lass; | |
| 173 | this.d estination Class = de stinationC lass; | |
| 174 | } | |
| 175 | publ ic Class<? > getSourc eClass() | |
| 176 | { | |
| 177 | return this.sour ceClass; | |
| 178 | } | |
| 179 | publ ic Class<? > getDesti nationClas s() | |
| 180 | { | |
| 181 | return this.dest inationCla ss; | |
| 182 | } | |
| 183 | ||
| 184 | @Ove rride | |
| 185 | publ ic int has hCode() | |
| 186 | { | |
| 187 | final int prime = 31; | |
| 188 | int re sult = 1; | |
| 189 | result = prime * result + ((this.des tinationCl ass == nul l) ? 0 : t his.destin ationClass .hashCode( )); | |
| 190 | result = prime * result + ((this.sou rceClass = = null) ? 0 : this.s ourceClass .hashCode( )); | |
| 191 | return result; | |
| 192 | } | |
| 193 | ||
| 194 | @Ove rride | |
| 195 | publ ic boolean equals(Ob ject obj) | |
| 196 | { | |
| 197 | if (th is == obj) | |
| 198 | return t rue; | |
| 199 | if (ob j == null) | |
| 200 | return f alse; | |
| 201 | if (ge tClass() ! = obj.getC lass()) | |
| 202 | return f alse; | |
| 203 | Conver sionMapKey other = ( Conversion MapKey) ob j; | |
| 204 | if (th is.destina tionClass == null) | |
| 205 | { | |
| 206 | if (othe r.destinat ionClass ! = null) | |
| 207 | return fal se; | |
| 208 | } | |
| 209 | else i f (!this.d estination Class.equa ls(other.d estination Class)) | |
| 210 | return f alse; | |
| 211 | if (th is.sourceC lass == nu ll) | |
| 212 | { | |
| 213 | if (othe r.sourceCl ass != nul l) | |
| 214 | return fal se; | |
| 215 | } | |
| 216 | else i f (!this.s ourceClass .equals(ot her.source Class)) | |
| 217 | return f alse; | |
| 218 | return true; | |
| 219 | } | |
| 220 | } | |
| 221 | } |
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