[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-1709) seam-gen generated code throws exception

seam-gen generated code throws exception ---------------------------------------- Key: JBSEAM-1709 URL: https://jira.jboss.org/jira/browse/JBSEAM-1709 Project: Seam Issue Type: Bug Components: Tools Affects Versions: 2.0.0.BETA1 Environment: Seam (CVS checkout from today), JBoss 4.2.1, Java 6, Windows XP Reporter: Ralph Schaer Assignee: Norman Richards Fix For: 2.1.0.BETA1 A seam-gen generated application (with generated entities) is throwing the following error, when I click for example on the column header in a list (sort) or when I try to create a new object. Exception during request processing: Caused by java.lang.IllegalArgumentException with message: "Could not invoke method by reflection: Instance.getComponent() on: test.CarHome" org.jboss.seam.util.Reflections.invoke(Reflections.java:31) org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) Caused by java.lang.IllegalArgumentException with message: "object is not an instance of declaring class" sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.jboss.seam.util.Reflections.invoke(Reflections.java:21) org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) org.jboss.seam.persistence.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:45) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:38) org.jboss.seam.util.Work.workInTransaction(Work.java:39) org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:32) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106) org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151) org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87) test.CarHome_$$_javassist_2.getComponent(CarHome_$$_javassist_2.java) org.jboss.seam.core.Validators.getValidator(Validators.java:85) Steps to reproduce the error 1. Create a table in the database (Example with mysql. I guess the database does not matter) CREATE TABLE `test`.`Car` ( `id` INTEGER UNSIGNED NOT NULL DEFAULT NULL AUTO_INCREMENT, `name` VARCHAR(255) NOT NULL, PRIMARY KEY (`id`) ) ENGINE = InnoDB; 2. seam setup (ear or war deployment does not matter. Problem exists in both deployment modes) 3. seam new-project 4. seam generate-entities 5. seam explode (jboss is already running) 6. Start the broser and type http://localhost:8080/name_of_webapp 7. Browser shows the Welcome screen. Everything looks fine. 8. Click on "Car List " 9. Click on "Create car" 10. Exception