Collin,

I've been using the ObjectModelHelper.getRequest method as part of an
implementation of the RequestParamAction interface in a WAR only, so I'm
probably not going to be of much help, but something just occurred to
me:
REQUEST_OBJECT is a hardcoded String in ObjectModelHelper, defined as
"request". This String is used to "index" the object in the Map object.

In the JDK 1.3 documentation, it says that Map.get() will throw a
ClassCastException if the key passed as parameter is of inappropriate
type for the given Map object.

Maybe you could try to use Map.entrySet() as a debug in the getRequest
method in order to find out what the available keys and their associated
objects are in the Map you are using.

Hope that helps,
Regards,
Cedric

-----Original Message-----
From: Collin VanDyck [mailto:[EMAIL PROTECTED] 
Sent: 28 July 2003 19:55
To: [EMAIL PROTECTED]
Subject: Issues with using embedded FOP libraries alongside Cocoon


I've got an application with two .WAR webapps, and one EJB jar, all
directly inside of my application.ear, all of which need to be able to
use the FOP libraries.  Specifically, I need to be able to have one of
my session beans render a PDF to disk or remote location without
invoking a Cocoon sitemap . I did this per the instructions on embedding
FOP on the FOP website.

In order to make the FOP library in my EJBs accessible, I place the
following into my EJB.jar's META-INF/lib directory:

avalon-framework-20020627.jar
fop-0.20.5.jar
logkit-20020529.jar

However, this is causing my webapps to throw one exception over and
over:

The code that is throwing it is ObjectModelHelper.getRequest():

public static final Request getRequest(Map objectModel) {
    return (Request)objectModel.get(REQUEST_OBJECT);
}

I rebuilt the source code with code to tell me what class this object
that was being returned was, and it was of this class:

org.apache.cocoon.environment.http.HttpRequest

Which seems to me to be OK  because it implements Request.  I'm baffled.
Note though, that both serialization to PDF from the context of a Cocoon
invocation as well as serialization inside of the EJB are performing
perfectly.  The bad thing is that I get about 10MB's of these errors
each time I make such a request, which slows everything down greatly.

I'm using Cocoon 2.0.4, and JBoss 3.2.  Any help greatly appreciated.

thanks!
Collin


The error:

13:54:37,031 ERROR [STDERR] Logging Error: Unknown error writing event.
13:54:37,031 ERROR [STDERR] java.lang.ClassCastException:
org.apache.cocoon.environment.http.HttpRequest
13:54:37,031 ERROR [STDERR]     at
org.apache.cocoon.environment.ObjectModelHelper.getRequest(ObjectModelHe
lper
.java:91)
13:54:37,031 ERROR [STDERR]     at
org.apache.cocoon.util.log.CocoonLogFormatter.getURI(CocoonLogFormatter.
java
:205)
13:54:37,031 ERROR [STDERR]     at
org.apache.cocoon.util.log.CocoonLogFormatter.formatPatternRun(CocoonLog
Form
atter.java:153)
13:54:37,031 ERROR [STDERR]     at
org.apache.cocoon.util.log.ExtensiblePatternFormatter.format(ExtensibleP
atte
rnFormatter.java:37
6)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.output.AbstractOutputTarget.format(AbstractOutputTarget.j
ava:
132)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.output.AbstractOutputTarget.doProcessEvent(AbstractOutput
Targ
et.java:91)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.output.AbstractTarget.processEvent(AbstractTarget.java:87
)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.Logger.fireEvent(Logger.java:612)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.Logger.output(Logger.java:587)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.Logger.output(Logger.java:570)
13:54:37,047 ERROR [STDERR]     at
org.apache.log.Logger.info(Logger.java:146)
13:54:37,047 ERROR [STDERR]     at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1142)
13:54:37,047 ERROR [STDERR]     at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tion
FilterChain.java:24
7)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erCh
ain.java:193)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.ja
va:260)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:643)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.ja
va:191)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:643)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja
va:2
46)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:641)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241
5)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180
)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:643)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa
lve.
java:170)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:641)
13:54:37,047 ERROR [STDERR]     at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:172
)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:641)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509
)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:641)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java
:174)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvok
eNext(StandardPipel
ine.java:643)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
13:54:37,062 ERROR [STDERR]     at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
13:54:37,062 ERROR [STDERR]     at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
13:54:37,062 ERROR [STDERR]     at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:43
2)
13:54:37,062 ERROR [STDERR]     at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processC
onne
ction(Http11Protoco
l.java:386)
13:54:37,062 ERROR [STDERR]     at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:53
4)
13:54:37,062 ERROR [STDERR]     at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.jav
a:530)
13:54:37,062 ERROR [STDERR]     at java.lang.Thread.run(Thread.java:536)


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