Xerces with Axis1.2RC3

[Chris Angelo Yu Averia <ch...@ureach.com>]

Hello,

I am just new to Axis.  Hope you can help out with my concern. 
I am using JDK 1.4, Tomcat 5.0 and Axis 1.2RC3.

As stated in the installation guide, Axis prefers to use Xerces
as its XML parser.  So no problem here, since I am using Tomcat,
Xerces is already included in the
"<CATALINA_HOME>/common/endorsed" directory.  I am just quite
puzzled with how the Xerces XML Parser
"org.apache.xerces.jaxp.*" gets picked up by the classloader.  

If I leave XercesImpl.jar in the
"<CATALINA_HOME>/common/endorsed" directory, as
expected, it is loaded by the bootstrap.  However, if I move
XercesImpl.jar to
"WEB-INF/lib" directory, it also gets picked up the bootstrap
class loader.  I always thought that placing a JAR file in the
"WEB-INF/lib"
(aside from the javax packages) will get picked up by the
WebAppClassLoader...

But when I tried to use an XML parser from IBM and put it in
WEB-INF/lib directory, it gets correctly picked up by the
WebAppClassLoader.

So my question is why does the Xerces Parser
"org.apache.xerces.jaxp.*", when moved to WEB-INF/lib, gets
picked up by the bootstap classloader instead of the
WebAppClassLoader?  

Any ideas?

Thanks in advance!
Chris


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Re: Xerces with Axis1.2RC3

[Fernando Nasser <fn...@redhat.com>]

Are you sure it is the Xerces-j2 jar that comes with Tomcat that is 
being picked or the broken xerces-j-based implementation that comes with 
the JDK?

Regards,
Fernando

Chris Angelo Yu Averia wrote:
> Hello,
> 
> I am just new to Axis.  Hope you can help out with my concern. 
> I am using JDK 1.4, Tomcat 5.0 and Axis 1.2RC3.
> 
> As stated in the installation guide, Axis prefers to use Xerces
> as its XML parser.  So no problem here, since I am using Tomcat,
> Xerces is already included in the
> "<CATALINA_HOME>/common/endorsed" directory.  I am just quite
> puzzled with how the Xerces XML Parser
> "org.apache.xerces.jaxp.*" gets picked up by the classloader.  
> 
> If I leave XercesImpl.jar in the
> "<CATALINA_HOME>/common/endorsed" directory, as
> expected, it is loaded by the bootstrap.  However, if I move
> XercesImpl.jar to
> "WEB-INF/lib" directory, it also gets picked up the bootstrap
> class loader.  I always thought that placing a JAR file in the
> "WEB-INF/lib"
> (aside from the javax packages) will get picked up by the
> WebAppClassLoader...
> 
> But when I tried to use an XML parser from IBM and put it in
> WEB-INF/lib directory, it gets correctly picked up by the
> WebAppClassLoader.
> 
> So my question is why does the Xerces Parser
> "org.apache.xerces.jaxp.*", when moved to WEB-INF/lib, gets
> picked up by the bootstap classloader instead of the
> WebAppClassLoader?  
> 
> Any ideas?
> 
> Thanks in advance!
> Chris
> 
> 
> ________________________________________________
> Get your own "800" number
> Voicemail, fax, email, and a lot more
> http://www.ureach.com/reg/tag
> 

-- 
Fernando Nasser
Red Hat Canada Ltd.                     E-Mail:  fnasser@redhat.com
2323 Yonge Street, Suite #300
Toronto, Ontario   M4P 2C9