Posted by BitByter on
URL: https://discuss.orbeon.com/Loading-Secured-XSD-SChema-Files-tp33604.html

Hi Orbeons,

I'm using the latest Orbeon Forms nightly build in an "seperate deployment".
My own web app which contains the XForms requires authentication, which
means the user first has to log in before using it.

The security is implemented in a servlet filter, which checks for a valid
credential in the users session. If a valid credential is present, simply
the next servlet filter is called in the chain. If no valid credential is
available, the user is forwarded to a login page - to obtain a new, valid
credential.

Now my problem is that I can't reference any XSD schema in my XForms page
like <xforms:model schema="schema.xsd">. When I do so, I get the following
error page from Orbeon Forms:


Orbeon Forms - Error Page
Error Message

The following error has occurred:
Error Message

White spaces are required between publicId and systemId.
Orbeon Forms Call Stack

The Orbeon Forms Call Stack helps you determine what sequence of Orbeon Forms operations have caused the error. Resource URL    Line    Column  Description     XML Element
http://localhost:9090/mywebapp/xforms/bookcast/schema.xsd     13      63
oxf:/ops/pfc/xforms-epilogue.xpl        114     71      reading processor output (name='document', ref='xformed-data')  
oxf:/config/epilogue.xpl        41      58      reading processor output (name='xformed-data', id='xformed-data')      
oxf:/config/epilogue-servlet.xpl        30      48      reading processor output (name='xformed-data')  
oxf:/config/epilogue.xpl        59      46      executing processor (name='{http://www.orbeon.com/oxf/processors}pipeline')     ...
oxf:/ops/xforms/xforms-renderer.xpl     32      38      executing processor (name='{http://www.orbeon.com/oxf/processors}pipeline')     ...

Java Exceptions (4 total)

Java Exceptions are the native mechanism by which Orbeon Forms reports errors. More than one exception may be provided below but usually the first exception along with the Orbeon Forms Stack Trace above provide enough information to track down an issue.  org.orbeon.oxf.common.ValidationException
Exception Class org.orbeon.oxf.common.ValidationException
Message White spaces are required between publicId and systemId.
Resource URL    http://localhost:9090/mywebapp/xforms/bookcast/schema.xsd
Line    13
Column  63
Servlet Stack Trace
(110 method calls)              Class Name      Method Name     File Name       Line Number
org.orbeon.oxf.xforms.XFormsModelSchemaValidator$MSVGrammarReaderController     error   XFormsModelSchemaValidator.java 104
com.sun.msv.reader.Controller   error   Controller.java 49
com.sun.msv.reader.Controller   error   Controller.java 61
com.sun.msv.reader.Controller   fatalError      Controller.java 57
orbeon.apache.xerces.util.ErrorHandlerWrapper   fatalError      ErrorHandlerWrapper.java        218
orbeon.apache.xerces.impl.XMLErrorReporter      reportError     XMLErrorReporter.java   384
orbeon.apache.xerces.impl.XMLErrorReporter      reportError     XMLErrorReporter.java   314
orbeon.apache.xerces.impl.XMLScanner    reportFatalError        XMLScanner.java 1436
orbeon.apache.xerces.impl.XMLScanner    scanExternalID  XMLScanner.java 1024
orbeon.apache.xerces.impl.XMLDocumentScannerImpl        scanDoctypeDecl XMLDocumentScannerImpl.java     588


Maybe I also should mention that I use client side state hadling for Orbeon
Forms, as server side state handling does not work for some reason with my
web app.

I assume Orbeon Forms tries to load the XSD schema from my web app, but
fails as it does not own a valid credential, thus receives the login page
instead of the XSD schema and of course fails parsing it.

When I omit the schema attribute in the <xforms:model/> element, the XForms
page loads correctly.

Is my assumption for the reason of this error correct? Does anybody have an
idea how to solve that problem?


- bitbyter





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