3 Replies Latest reply on Jul 4, 2008 7:03 PM by bashan

Seam and component binding

bashan Jul 4, 2008 1:32 PM

Hi,

I have a page that used to work ok without Seam. When converting it to use Seam I wanted to add:

  @In
  Session myDatabase;

The page loads ok, but after pressing the ok button (it makes a user signup action), I get this exception:

20:21:21,713 ERROR [ExceptionFilter] exception root cause
javax.el.ELException: /signup.xhtml @101,100 binding="#{signup.htmlSelectOneMenuMonth}": Error writing 'htmlSelectOneMenuMonth' on type com.nikonians.ui.view.bean.SignupAction_$$_javassist_1
     at com.sun.facelets.el.TagValueExpression.setValue(TagValueExpression.java:101)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:244)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:249)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:249)
     at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:193)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
     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.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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.seam.RequiredException: @In attribute requires non-null value: signup.myDatabase
     at org.jboss.seam.Component.getValueToInject(Component.java:2178)
     at org.jboss.seam.Component.injectAttributes(Component.java:1601)
     at org.jboss.seam.Component.inject(Component.java:1419)
     at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
     at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
     at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
     at com.nikonians.ui.view.bean.SignupAction_$$_javassist_1.setHtmlSelectOneMenuMonth(SignupAction_$$_javassist_1.java)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at javax.el.BeanELResolver.setValue(BeanELResolver.java:108)
     at javax.el.CompositeELResolver.setValue(CompositeELResolver.java:68)
     at com.sun.faces.el.FacesCompositeELResolver.setValue(FacesCompositeELResolver.java:93)
     at org.jboss.el.parser.AstPropertySuffix.setValue(AstPropertySuffix.java:73)
     at org.jboss.el.parser.AstValue.setValue(AstValue.java:84)
     at org.jboss.el.ValueExpressionImpl.setValue(ValueExpressionImpl.java:249)
     at com.sun.facelets.el.TagValueExpression.setValue(TagValueExpression.java:93)
     ... 35 more
03/07/2008 20:21:21 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
org.jboss.seam.RequiredException: @In attribute requires non-null value: signup.myDatabase
     at org.jboss.seam.Component.getValueToInject(Component.java:2178)
     at org.jboss.seam.Component.injectAttributes(Component.java:1601)
     at org.jboss.seam.Component.inject(Component.java:1419)
     at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
     at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
     at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
     at com.nikonians.ui.view.bean.SignupAction_$$_javassist_1.setHtmlSelectOneMenuMonth(SignupAction_$$_javassist_1.java)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at javax.el.BeanELResolver.setValue(BeanELResolver.java:108)
     at javax.el.CompositeELResolver.setValue(CompositeELResolver.java:68)
     at com.sun.faces.el.FacesCompositeELResolver.setValue(FacesCompositeELResolver.java:93)
     at org.jboss.el.parser.AstPropertySuffix.setValue(AstPropertySuffix.java:73)
     at org.jboss.el.parser.AstValue.setValue(AstValue.java:84)
     at org.jboss.el.ValueExpressionImpl.setValue(ValueExpressionImpl.java:249)
     at com.sun.facelets.el.TagValueExpression.setValue(TagValueExpression.java:93)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:244)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:249)
     at com.sun.faces.lifecycle.RestoreViewPhase.doPerComponentActions(RestoreViewPhase.java:249)
     at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:193)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
     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.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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)

(There is more of this exception, but there was not space... this is the interesting part...)

When removing the component binding (which is used for some validation) everything is working fine.
Is there a problem with Seam and component binding?

Thanks,
Guy.

1. Re: Seam and component binding

thejavafreak Jul 4, 2008 4:26 PM (in response to bashan)

What type of session are you injecting? Is it an HttpSession? Have defined in anywhere to make sure that it is not null?
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2. Re: Seam and component binding

admin.admin.email.tld Jul 4, 2008 4:48 PM (in response to bashan)
try
@In(create=true)

and post the import statement for that Session class/interface...
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3. Re: Seam and component binding

bashan Jul 4, 2008 7:03 PM (in response to bashan)
This is Hibernate session. I tried create=true but it is not working.

This variable should be there and initialize, because it is working well on other beans and it is working well on this problematic bean when I remove the component binding.

whenever I add a component binding like:

binding="#{signup.htmlSelectOneMenuMonth}"

I am getting this exception.

Any problems with Seam and component binding?
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