[ http://issues.apache.org/jira/browse/TUSCANY-368?page=comments#action_12402205 ]
Jim Marino commented on TUSCANY-368: ------------------------------------ I spent about two minutes looking at this so I may be offbase... This appears to be a classloading/isolation problem. SystemImplementationLoader calls Java5ComponentTypeIntrospector to introspect the implementation of a system component configured in a module fragment. As Java5ComponentTypeIntrospector introspects the implementation class's methods, it encounters a ClassCastException attempting to load StandardHost, a Tomcat class. StandardHost is referenced by TuscanyHost, which extends it. TuscanyHost is referenced by TomcatHost, a system service which implements the host api. So, it sounds as if SystemImplementationLoader is attempting to process the SCDL entry for TomcatHost in the context of a classloader which does not have access to StandardHost since I believe Tomcat segregrates its implementation classes from application classloaders. I haven't been following the changes where jars have been moved to common in Tomcat but if the above is correct, this may be the culprit. > Running helloworld sample using dist give class not found exception > ------------------------------------------------------------------- > > Key: TUSCANY-368 > URL: http://issues.apache.org/jira/browse/TUSCANY-368 > Project: Tuscany > Type: Bug > Reporter: Rick Rineholt > Priority: Blocker > > Running helloworld sca sample with > java.ext.dirs=\java\distribution\target\tuscany-dist\lib gives exception > below. > Oddly enough running it with testing/tomcat/target/j2se does not. > Is it possible this class is in some jar manifest that's trying to load it > that is not created as part of the normal build process ? > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/catalina/core/StandardHost > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClass(ClassLoader.java:620) > at > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) > at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) > at java.net.URLClassLoader.access$100(URLClassLoader.java:56) > at java.net.URLClassLoader$1.run(URLClassLoader.java:195) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at java.lang.ClassLoader.loadClass(ClassLoader.java:251) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) > at java.lang.Class.getDeclaredMethods0(Native Method) > at java.lang.Class.privateGetDeclaredMethods(Class.java:2365) > at java.lang.Class.privateGetPublicMethods(Class.java:2488) > at java.lang.Class.getMethods(Class.java:1406) > at > org.apache.tuscany.core.config.impl.Java5ComponentTypeIntrospector.introspect(Java5ComponentTypeIntrospector.java:105) > at > org.apache.tuscany.core.config.impl.Java5ComponentTypeIntrospector.introspect(Java5ComponentTypeIntrospector.java:92) > at > org.apache.tuscany.core.loader.system.SystemImplementationLoader.load(SystemImplementationLoader.java:63) > at > org.apache.tuscany.core.loader.system.SystemImplementationLoader.load(SystemImplementationLoader.java:36) > at > org.apache.tuscany.core.loader.impl.StAXLoaderRegistryImpl.load(StAXLoaderRegistryImpl.java:66) > at > org.apache.tuscany.core.loader.assembly.ComponentLoader.load(ComponentLoader.java:76) > at > org.apache.tuscany.core.loader.assembly.ComponentLoader.load(ComponentLoader.java:49) > at > org.apache.tuscany.core.loader.impl.StAXLoaderRegistryImpl.load(StAXLoaderRegistryImpl.java:66) > at > org.apache.tuscany.core.loader.assembly.CompositeLoader.loadComposite(CompositeLoader.java:43) > at > org.apache.tuscany.core.loader.assembly.ModuleFragmentLoader.load(ModuleFragmentLoader.java:39) > at > org.apache.tuscany.core.loader.assembly.ModuleFragmentLoader.load(ModuleFragmentLoader.java:32) > at > org.apache.tuscany.core.loader.impl.StAXLoaderRegistryImpl.load(StAXLoaderRegistryImpl.java:66) > at > org.apache.tuscany.core.config.impl.StAXModuleComponentConfigurationLoaderImpl.loadModuleFragment(StAXModuleComponentConfigurationLoaderImpl.java:70) > at > org.apache.tuscany.core.config.impl.AbstractModuleComponentConfigurationLoader.loadModuleComponent(AbstractModuleComponentConfigurationLoader.java:146) > at > org.apache.tuscany.core.config.impl.AbstractModuleComponentConfigurationLoader.loadModuleComponent(AbstractModuleComponentConfigurationLoader.java:132) > at > org.apache.tuscany.core.config.impl.AbstractModuleComponentConfigurationLoader.loadSystemModuleComponent(AbstractModuleComponentConfigurationLoader.java:91) > at > org.apache.tuscany.core.client.TuscanyRuntime.<init>(TuscanyRuntime.java:97) > at > org.apache.tuscany.core.client.TuscanyRuntime.<init>(TuscanyRuntime.java:67) > at helloworld.HelloWorldClient.main(HelloWorldClient.java:32) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
