Re: [OT] Xalan and Google App Engine

Thanks for the response.

It appears that it is a known issues with GAE, as seen here: http://code.google.com/p/googleappengine/issues/detail?id=1255&q=xpath&colspec=ID%20Type%20Status%20Priority%20Stars%20Owner%20Summary%20Log%20Component

Unfortunately, customers of GAE don't have access to the endorsed directory. :)

thanks again,
dave
  ----- Original Message ----- 
  From: Michael Glavassevich 
  To: [email protected] 
  Sent: Sunday, April 26, 2009 3:20 PM
  Subject: Re: [OT] Xalan and Google App Engine


  Perhaps you're hitting this bug [1][2] in the JDK. If so, putting the JAXP 1.3 xml-apis.jar from Xalan (or Xerces) in the endorsed directory should solve it.

  [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6202043
  [2] http://markmail.org/message/rvlroblxyza3xt3v

  Michael Glavassevich
  XML Parser Development
  IBM Toronto Lab
  E-mail: [email protected]
  E-mail: [email protected]

  "Dave Brosius" <[email protected]> wrote on 04/21/2009 09:49:23 AM:

  > I realize that this is probably a google app engine (GAE) issue, but
  > i thought i'd float it by you smart folks, as i'm guessing you will 
  > have a better guess.
  >  
  >  
  > I built a google web app that requires XPath. Unfortunately GAE 
  > apparently doesn't have support for xpath, and so i added xalan.jar,
  > serializer.jar etc to my
  > WEB-INF/lib. When I run, i get an exception with the pertainent parts being:
  >  
  > Caused by: java.lang.RuntimeException: XPathFactory#newInstance() 
  > failed to create an XPathFactory for the default object model: 
  > http://java.sun.com/jaxp/xpath/dom with the 
  > XPathFactoryConfigurationException: 
  > javax.xml.xpath.XPathFactoryConfigurationException: 
  > No XPathFactory implementation found for the object model: http:
  > //java.sun.com/jaxp/xpath/dom
  >    at javax.xml.xpath.XPathFactory.newInstance(Unknown Source)
  >  
  > I tried adding a META-INF/services/javax.xml.xpath.XPathFactory file
  > that referred to org.apache.xpath.jaxp.XPathFactoryImpl
  > but that didn't seem to make a difference.
  > Anyone know how i can get GAE to notice XPath as the provider for XPath?