Problems using custom ClassLoader

[Kristian Mandrup]

Hi all,   I have been trying to use a custom RegistryBuilder using a custom ClassLoader. ClassLoader works fine on its own!   When I run the Calculator example, it fails when trying to retrieve the Adder service:   public static …main(…) {                       …             RepositoryClassLoader loader = getLoader(repos, archiveName);             Registry hivemindRegistry = RepositoryRegistryBuilder                     .constructDefaultRegistry(repos,                             loader, paths);             String serviceName = "org.apache.hivemind.examples.Adder";             Class adderClass = loader.findClass(serviceName);               if (hivemindRegistry.containsService(adderClass)) {                 Object service = hivemindRegistry.getService(adderClass); }   Internally, the javassist tries to:   public MethodFab addMethod(int modifiers, MethodSignature ms, String body)   with the following src for the body   src = "" org.apache.hivemind.internal.ser.ServiceSerializationHelper.getServiceSerializationSupport().getServiceTokenForService("examples.Adder");”   Parsing this source causes the following error !!! Is this an error with javassist ???   It proceeds to try loading “org.class” using my custom ClassLoader, calling [RepositoryClassLoader ].getResourceAsStream(String name) !!!   Anything to do with my “bogus” URL at public URL getResource(String name) ?     org.apache.hivemind.ApplicationRuntimeException: Unable to add method java.lang.Object writeReplace() to class $Adder_1019bc4c98d: javassist.NotFoundException: org                       at org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxy(SingletonServiceModel.java:114)                       at org.apache.hivemind.impl.servicemodel.SingletonServiceModel.getService(SingletonServiceModel.java:58)                       at org.apache.hivemind.impl.ServicePointImpl.getService(ServicePointImpl.java:189)                       at org.apache.hivemind.impl.ServicePointImpl.getService(ServicePointImpl.java:202)                       at org.apache.hivemind.impl.RegistryInfrastructureImpl.getService(RegistryInfrastructureImpl.java:207)                       at org.apache.hivemind.impl.RegistryImpl.getService(RegistryImpl.java:71)                       at org.planx.cmsoax.soa.hivemind.TestRepositoryRegistryBuilder.testConstruct(TestRepositoryRegistryBuilder.java:165)                       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)                       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)                       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)                       at java.lang.reflect.Method.invoke(Unknown Source)                       at junit.framework.TestCase.runTest(TestCase.java:154)                       at junit.framework.TestCase.runBare(TestCase.java:127)                       at junit.framework.TestResult$1.protect(TestResult.java:106)                       at junit.framework.TestResult.runProtected(TestResult.java:124)                       at junit.framework.TestResult.run(TestResult.java:109)                       at junit.framework.TestCase.run(TestCase.java:118)                       at junit.framework.TestSuite.runTest(TestSuite.java:208)                       at junit.framework.TestSuite.run(TestSuite.java:203)                       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:474)                       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:342)                       at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:194) Caused by: org.apache.hivemind.ApplicationRuntimeException: Unable to add method java.lang.Object writeReplace() to class $Adder_1019bc4c98d: javassist.NotFoundException: org                       at org.apache.hivemind.service.impl.ClassFabImpl.addMethod(ClassFabImpl.java:310)                       at org.apache.hivemind.impl.ProxyBuilder.addSerializable(ProxyBuilder.java:84)                       at org.apache.hivemind.impl.ProxyBuilder.<init>(ProxyBuilder.java:67)                       at org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxyClass(SingletonServiceModel.java:129)                       at org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxy(SingletonServiceModel.java:89)                       ... 21 more Caused by: java.lang.RuntimeException: javassist.NotFoundException: org                       at javassist.CtClassType.getClassFile2(CtClassType.java:197)                       at javassist.CtClassType.getFieldsCache(CtClassType.java:551)                       at javassist.CtClassType.getDeclaredField2(CtClassType.java:572)                       at javassist.CtClassType.getField2(CtClassType.java:515)                       at javassist.CtClassType.getField(CtClassType.java:507)                       at javassist.compiler.MemberResolver.lookupFieldByJvmName2(MemberResolver.java:249)                       at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:774)                       at javassist.compiler.TypeChecker.atFieldRead(TypeChecker.java:702)                       at javassist.compiler.TypeChecker.atExpr(TypeChecker.java:504)                       at javassist.compiler.ast.Expr.accept(Expr.java:67)                       at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:759)                       at javassist.compiler.TypeChecker.atFieldRead(TypeChecker.java:702)                       at javassist.compiler.TypeChecker.atExpr(TypeChecker.java:504)                       at javassist.compiler.ast.Expr.accept(Expr.java:67)                       at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:759)                       at javassist.compiler.TypeChecker.atFieldRead(TypeChecker.java:702)                       at javassist.compiler.TypeChecker.atExpr(TypeChecker.java:504)                       at javassist.compiler.ast.Expr.accept(Expr.java:67)                       at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:759)                       at javassist.compiler.TypeChecker.atFieldRead(TypeChecker.java:702)                       at javassist.compiler.TypeChecker.atExpr(TypeChecker.java:504)                       at javassist.compiler.ast.Expr.accept(Expr.java:67)                       at javassist.compiler.TypeChecker.fieldAccess(TypeChecker.java:759)                       at javassist.compiler.TypeChecker.atFieldRead(TypeChecker.java:702)                       at javassist.compiler.TypeChecker.atExpr(TypeChecker.java:504)                       at javassist.compiler.ast.Expr.accept(Expr.java:67)                       at javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:586)                       at javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:156)                       at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)                       at javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:586)                       at javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:156)                       at javassist.compiler.ast.CallExpr.accept(CallExpr.java:45)                       at javassist.compiler.CodeGen.doTypeCheck(CodeGen.java:235)                       at javassist.compiler.CodeGen.compileExpr(CodeGen.java:222)                       at javassist.compiler.CodeGen.atReturnStmnt2(CodeGen.java:591)                       at javassist.compiler.JvstCodeGen.atReturnStmnt(JvstCodeGen.java:424)                       at javassist.compiler.CodeGen.atStmnt(CodeGen.java:356)                       at javassist.compiler.ast.Stmnt.accept(Stmnt.java:49)                       at javassist.compiler.CodeGen.atMethodBody(CodeGen.java:285)                       at javassist.compiler.Javac.compileBody(Javac.java:208)                       at javassist.CtBehavior.setBody(CtBehavior.java:188)                       at javassist.CtBehavior.setBody(CtBehavior.java:163)                       at org.apache.hivemind.service.impl.ClassFabImpl.addMethod(ClassFabImpl.java:302)         public static Registry constructDefaultRegistry(Repository repository,             ClassLoader classLoader, String[] modDescPath) {         ClassResolver resolver = new DefaultClassResolver(classLoader);         RegistryBuilder builder = new RegistryBuilder();                 // default provider - class resolver         builder.addModuleDescriptorProvider(new XmlModuleDescriptorProvider(new DefaultClassResolver()));                 // default provider - repository class resolver         // builder.addModuleDescriptorProvider(new XmlModuleDescriptorProvider(resolver));         // provide descriptor from xml file at specific location, use repository resolver         if (modDescPath != null) {             for (int i = 0; i < modDescPath.length; i++) {                 FileResource resource = new FileResource(modDescPath[i]);                 builder                         .addModuleDescriptorProvider(new XmlModuleDescriptorProvider(                                 resolver, resource));             }         }         return builder.constructRegistry(Locale.getDefault());     }     public class RepositoryClassLoader extends ClassLoader { ……     public InputStream getResourceAsStream(String name) {         try {             return new ByteArrayInputStream(loadClassData(name));            } catch (ServiceClassLoaderException e) {             System.out.println("Resource not found [" + name + "]");             return null;         }            }       public URL getResource(String name) {         try {             String url = "" StringBuffer("http://").append(getServletPath()).append("repository=").append(getRepository().getName()).append("&project=").append(getProject()).append("&path=").append(name).toString();             return new URL(url);            } catch (MalformedURLException e) {             e.printStackTrace();             return null;         }                   } --- Outgoing mail is certified Virus Free. 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