[jboss-user] Could not instantiate Seam component: componentList

Kaan Yamanyar kaan at yamanyar.com
Thu Jan 31 10:09:31 EST 2008


Hi,

After creating entities with generate-entities,  I wanted to check
application in browser.

Seam throw the exception i pasted below.

It says it can not instantiate due to Caused by:
java.lang.RuntimeException: duplicate method: getComponent in
com.weebill.sessionbeans.ComponentList_$$_javassist_20.

Kind regards,
Kaan


org.jboss.seam.InstantiationException: Could not instantiate Seam
component: componentList
	at org.jboss.seam.Component.newInstance(Component.java:1970)
	at org.jboss.seam.Component.getInstance(Component.java:1873)
	at org.jboss.seam.Component.getInstance(Component.java:1840)
	at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
	at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
	at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:166)
	at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
	at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
	at org.jboss.el.parser.AstValue.getValue(AstValue.java:63)
	at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:111)
	at org.jboss.seam.navigation.Param.getStringValueFromModel(Param.java:133)
	at org.jboss.seam.navigation.Pages.getStringValuesFromModel(Pages.java:690)
	at org.jboss.seam.ui.component.UISeamCommandBase.getUrl(UISeamCommandBase.java:51)
	at org.jboss.seam.ui.renderkit.LinkRendererBase.doEncodeBegin(LinkRendererBase.java:26)
	at org.jboss.seam.ui.util.cdk.RendererBase.encodeBegin(RendererBase.java:79)
	at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:788)
	at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:280)
	at org.richfaces.renderkit.html.ToolBarRendererBase.encodeChildren(ToolBarRendererBase.java:81)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
	at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: duplicate method: getComponent
in com.weebill.sessionbeans.ComponentList_$$_javassist_20
	at org.jboss.seam.util.ProxyFactory.createClass(ProxyFactory.java:190)
	at org.jboss.seam.Component.createProxyFactory(Component.java:2260)
	at org.jboss.seam.Component.getProxyFactory(Component.java:1375)
	at org.jboss.seam.Component.wrap(Component.java:1366)
	at org.jboss.seam.Component.instantiateJavaBean(Component.java:1321)
	at org.jboss.seam.Component.instantiate(Component.java:1268)
	at org.jboss.seam.Component.newInstance(Component.java:1966)
	... 67 more
Caused by: javassist.bytecode.DuplicateMemberException: duplicate
method: getComponent in
com.weebill.sessionbeans.ComponentList_$$_javassist_20
	at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.java:559)
	at javassist.bytecode.ClassFile.addMethod(ClassFile.java:539)
	at org.jboss.seam.util.ProxyFactory.override(ProxyFactory.java:402)
	at org.jboss.seam.util.ProxyFactory.overrideMethods(ProxyFactory.java:376)
	at org.jboss.seam.util.ProxyFactory.make(ProxyFactory.java:304)
	at org.jboss.seam.util.ProxyFactory.createClass(ProxyFactory.java:181)
	... 73 more



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