[TAPESTRY-408] OGNL can't access a static field in a class in the webapp context

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0
• Fix Version/s: 4.0
• Component/s: Framework
• Environment: Windows XP
• Assignee: Howard Lewis Ship
• Reporter: Kent Tong
• Created: 16/Jul/05 21:42
• Updated: 15/Aug/05 00:46
• Resolved: 23/Jul/05 00:53

Description

I have a class com.ttdev.shop.ProductDetails in my webapp's context and all the tapestry and related jar files (including ognl.jar) in Tomcat's share lib folder. In this setup, OGNL fails when evaluating the following expression:

<component id="print" type="Insert">
<binding name="value" value="ognl:@com.ttdev.shop.ProductDetails@CONTINUE_SHOPPING_BUTTON"/>
</component>

This problem is most likely related to the bug tapestry-142. Below is the stack trace:

1. ognl.ASTStaticField.isNodeConstant(ASTStaticField.java:80)
2. ognl.SimpleNode.isConstant(SimpleNode.java:270)
3. ognl.Ognl.isConstant(Ognl.java:536)
4. ognl.Ognl.isConstant(Ognl.java:546)
5. org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.isConstant(ExpressionEvaluatorImpl.java:130)
6. $ExpressionEvaluator_1051f9293d2.isConstant($ExpressionEvaluator_1051f9293d2.java)
7. org.apache.tapestry.binding.ExpressionBinding.initialize(ExpressionBinding.java:145)
8. org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBinding.java:101)
9. org.apache.tapestry.binding.AbstractBinding.getObject(AbstractBinding.java:87)
10. $Insert_70.getValue($Insert_70.java)
11. org.apache.tapestry.components.Insert.renderComponent(Insert.java:42)
12. org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:612)
13. org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
14. org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:612)
15. org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:274)
16. org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:355)
17. org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:71)
18. $ResponseRenderer_1051f9292ef.renderResponse($ResponseRenderer_1051f9292ef.java)
19. org.apache.tapestry.engine.HomeService.service(HomeService.java:65)
20. $IEngineService_1051f929354.service($IEngineService_1051f929354.java)
21. org.apache.tapestry.services.impl.EngineServiceOuterProxy.service(EngineServiceOuterProxy.java:65)
22. org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:241)
23. org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
24. $WebRequestServicer_1051f929335.service($WebRequestServicer_1051f929335.java)
25. org.apache.tapestry.services.impl.DisableCachingFilter.service(DisableCachingFilter.java:48)
26. $WebRequestServicerFilter_1051f929337.service($WebRequestServicerFilter_1051f929337.java)
27. $WebRequestServicer_1051f929339.service($WebRequestServicer_1051f929339.java)
28. $WebRequestServicer_1051f929331.service($WebRequestServicer_1051f929331.java)
29. org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
30. $ServletRequestServicer_1051f929315.service($ServletRequestServicer_1051f929315.java)
31. org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
32. $ServletRequestServicerFilter_1051f929311.service($ServletRequestServicerFilter_1051f929311.java)
33. $ServletRequestServicer_1051f929317.service($ServletRequestServicer_1051f929317.java)
34. org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
35. $ServletRequestServicerFilter_1051f92930f.service($ServletRequestServicerFilter_1051f92930f.java)
36. $ServletRequestServicer_1051f929317.service($ServletRequestServicer_1051f929317.java)
37. org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
38. $ServletRequestServicerFilter_1051f929313.service($ServletRequestServicerFilter_1051f929313.java)
39. $ServletRequestServicer_1051f929317.service($ServletRequestServicer_1051f929317.java)
40. $ServletRequestServicer_1051f929309.service($ServletRequestServicer_1051f929309.java)
41. org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:145)
42. org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:101)
43. javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
44. javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
45. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
46. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
47. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
48. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
49. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
50. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
51. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
52. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
53. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
54. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:738)
55. org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
56. org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
57. org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
58. java.lang.Thread.run(Thread.java:595)

Issue Links

• is duplicated by: TAPESTRY-297 ExpressionEvaluatorImpl.isConstant should use context class loader
• relates to: TAPESTRY-142 NPE as follow-up to a ClassNotFoundException caused by a wrongly stuffed OGNL context