Re: tapestry5 on google appengine exception

Sat, 11 Apr 2009 10:37:53 -0700

Interesting; looks like it's not finding an anonymous class within Loop (as near as I can tell from the stack traces).
I'm assuming the answer is yes, but, just to be certain, this simple app runs correctly when you run it locally, eg, via maven jetty:run? (Just to be sure, before we go blaming the GAE/tapestry interaction... :) 

Robert


On Apr 11, 2009, at 4/1111:59 AM , ஸ்ரீராம்  
கீர்த்தி wrote:



Robert,


The exception that I posted couple of mails back was my mistake. I  
had not
included stax and woodstox jars in my classpath. Now I have added  
all the
necessary jars to the lib folder. I have put tapestry-core,  
annotations and

ioc jars to the path.


Now I am getting back the exception: (happens bot in 5.1.0.3 and  
5.1.0.4)

java.lang.NoClassDefFoundError: Could not initialize class
org.apache.tapestry5.corelib.components.Loop

   at  
$Instantiator_12096165961.newInstance($Instantiator_12096165961.java)

   at

org 
.apache.tapestry5.internal.structure.InternalComponentResourcesImpl. 
(InternalComponentResourcesImpl.java:132)

...


All I have tried to do is display a page property and place a page  
link -

--------- Start.tml -----------
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
<head>
   <title>Home</title>
</head>
<body>
   This start page was generated at ${generationTime}
   <a href="#" t:type="pagelink" t:page="Welcome">Welcome Page</a>
</body>
</html>
----------- Welcome.tml -----------
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
<head>
   <title>Home</title>
</head>
<body>
   The welcome message : ${welcomeMessage}

   <a href="#" t:type="pagelink" t:page="Start">Go Back to Start  
Page</a>

</body>
</html>

I am not even sure if anything has changed in .tml format since 5.0.18

- keerthy

2009/4/11 ஸ்ரீராம் கீர்த்தி  
<sriramkeer...@gmail.com>



Robert,


Apparently there are new dependencies like woodstox, stax added to  
5.1.0.x.

I didn't copy these jars to my GAE app's lib folder. Let me try again
probably with 5.1.0.4 and let you know.

- keerthy



On Sat, Apr 11, 2009 at 8:24 PM, Robert Zeigler  
<robe...@scazdl.org>wrote:



Have you tried 5.1.0.4-SNAPSHOT?

Robert



On Apr 11, 2009, at 4/117:23 AM , ஸ்ரீராம்  
கீர்த்தி wrote:


Hi Jun,



I tried to integrate Tapestry in a Google App Engine (GAE)  
project in my

local eclipse environment. I also got the same error in
corelib.components.Loop.


I then proceeded to download Tapestry-5.1.0.3 snapshot release  
and tried

it in my GAE project. It now gives an exception in Template Parser

Exception constructing service 'TemplateParser': Error invoking

constructor  
org.apache.tapestry5.internal.services.TemplateParserImpl(Map,

boolean) (at TemplateParserImpl.java:50) via

org 
.apache 
.tapestry5.internal.services.InternalModule.bind(ServiceBinder)

(at InternalModule.java:65) (for service 'TemplateParser'):
org/codehaus/stax2/XMLInputFactory2
RequestURI=/

Caused by:

java.lang.RuntimeException: Exception constructing service
'TemplateParser': Error invoking constructor

org.apache.tapestry5.internal.services.TemplateParserImpl(Map,  
boolean) (at

TemplateParserImpl.java:50) via

org 
.apache 
.tapestry5.internal.services.InternalModule.bind(ServiceBinder)

(at InternalModule.java:65) (for service 'TemplateParser'):
org/codehaus/stax2/XMLInputFactory2

the ultimate exception in the trace was :

java.lang.NoClassDefFoundError: org/codehaus/stax2/XMLInputFactory2
  at

org.apache.tapestry5.internal.services.TemplateParserImpl. 
(TemplateParserImpl.java:44)

  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
...


I've attached the full exception trace with the mail. Please let  
me know
if you were able to deploy tapestry successfully in a GAE project  
with

version 5.1.0.3.


Did anybody do it successfully? Seems like JSF, wicket etc have  
started

deploying applications successfully in GAE.
http://groups.google.com/group/google-appengine-java/browse_thread/thread/2c3f7de6aacdc69f/60d81103be8aee51?lnk=raot

- keerthy


On Thu, Apr 9, 2009 at 10:45 AM, Jun Tsai <jun.t...@gmail.com>  
wrote:

The real exception:


[java] Caused by: java.lang.ClassNotFoundException: caught an  
exception

while obtaining a class file for
org.apache.tapestry5.corelib.components.Loop$1
  [java]     at javassist.Loader.findClass(Loader.java:359)
  [java]     at


org 
.apache 
.tapestry5.internal.services.ComponentInstantiatorSourceImpl 
$ 
PackageAwareLoader.findClass(ComponentInstantiatorSourceImpl.java: 
94)

  [java]     at javassist.Loader.loadClass(Loader.java:311)

  [java]     at java.lang.ClassLoader.loadClass(ClassLoader.java: 
251)

  [java]     at
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
  [java]     ... 77 more
  [java] Caused by: javassist.NotFoundException:
org.apache.tapestry5.corelib.components.Loop$1
  [java]     at javassist.ClassPool.get(ClassPool.java:436)
  [java]     at


org 
.apache 
.tapestry5 
.internal 
.services 
.ComponentInstantiatorSourceImpl 
.onLoad(ComponentInstantiatorSourceImpl.java:197)

  [java]     at javassist.Loader.findClass(Loader.java:340)
  [java]     ... 81 more

<tapestry-5.1.0.3-exception.txt>
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