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From: "Tim Fennell" <tfenne@rcn.com>
To: <ant-dev@jakarta.apache.org>
Subject: RE: Weblogic 5.1.0, xml4j and jaxp won't play nice...
Date: Tue, 8 Aug 2000 21:29:42 -0400
Message-ID: <PAEMIGABCOEPGKCJKAIDCEJPCBAA.tfenne@rcn.com>
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In-Reply-To: <399081E3.75D91FA9@expressaction.com>

I've come up against this too, and concurr. It should work fine if you put the
weblogic jars/dirs in the classpath ahead of parser.jar. It would appear that
WebLogic's tools request a jaxp compliant parser, but then try to downcast some
of the DOM objects returned to more specific classes. The downcast only works
with the xml4j parser.  Tsk tsk.

-t

-----Original Message-----
From: Rod McChesney [mailto:rodm@expressaction.com]
Sent: Tuesday, August 08, 2000 17:56
To: ant-dev@jakarta.apache.org
Subject: Re: Weblogic 5.1.0, xml4j and jaxp won't play nice...


Did you try putting the WebLogic stuff first on the classpath? We're
doing this here (I just switched over to ant 3 days ago) and it works
OK despite the potential conflict.

Rod

Scott Sutherland wrote:
>
> I've been attempting to automate the creation of deployable jar files
> for EJB's used by our current project and have run into a situation
> where weblogic and jaxp won't play nice together.
>
> If anyone has experienced the following and developed a ant based
> work-around I would greatly appreciate hearing your solution...
>
> The problem manifests itself as a ClassCastException when
> weblogic.ejbc is executing on the 'generic' jar file.
>
> Here are the actual exception and stack trace:
>
> AccountBean:
>     [javac] Compiling 3 source files to D:\usr\src\pd2.1\AccountEJB\classes
>   [copydir] Copying 2 files to D:\usr\src\pd2.1\AccountEJB\classes\META-INF
>       [jar] Building jar: D:\usr\src\pd2.1\AccountEJB\account-generic.jar
> java.lang.ClassCastException: com.sun.xml.tree.TextNode
>         at
weblogic.xml.dom.DOMUtils.getOptionalElementsByTagName(DOMUtils.java:204)
>         at
weblogic.xml.dom.DOMUtils.getOptionalElementByTagName(DOMUtils.java:170)
>         at
weblogic.xml.dom.DOMUtils.getOptionalValueByTagName(DOMUtils.java:97)
>         at
weblogic.ejb.deployment.dd.EJBReadDOM.getDescriptionValue(EJBReadDOM.java:404)
>         at
weblogic.ejb.deployment.dd.DescriptorLoader.createDeploymentUnit(DescriptorLoade
r.java:200)
>         at weblogic.ejbc.runBody(ejbc.java:299)
>         at weblogic.utils.compiler.Tool.run(Tool.java:80)
>         at weblogic.ejbc.main(ejbc.java:353)
>         at java.lang.reflect.Method.invoke(Native Method)
>         at
org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:97)
>         at org.apache.tools.ant.taskdefs.Java.run(Java.java:243)
>         at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:123)
>         at org.apache.tools.ant.taskdefs.Java.execute(Java.java:90)
>         at org.apache.tools.ant.Target.execute(Target.java:132)
>         at org.apache.tools.ant.Project.runTarget(Project.java:720)
>         at org.apache.tools.ant.Project.executeTarget(Project.java:451)
>         at org.apache.tools.ant.Project.executeTargets(Project.java:425)
>         at org.apache.tools.ant.Main.runBuild(Main.java:298)
>         at org.apache.tools.ant.Main.main(Main.java:119)
> ERROR: java.lang.ClassCastException: com.sun.xml.tree.TextNode
>
> The problem is associated with conflicts between JAXP and xml4j... I
> can execute weblogic.ejbc from the command line if I change the class
> path to exclude JAXP jars, but then ant will not run until I add them
> back.
>
> Thanks in advance,
>
> Scott
>
> --
> Scott Sutherland                          National Computer Systems
> (319) 354-9200                        Measurement Services Division
> suthsc@ncs.com                                        Iowa City, Ia
> import my.standard.disclaimer.*;                        GO HAWKS!!!
>
>   "Coding in windows is sort of like writing a biography about a
>   person who won't tell you anything about themselves." - jheart8