[castor-user] NullPointerException when Marshalling from inside Application Server

[Porter, Doug]

Using castor 1.1.2.1 I am attempting to marshal an object generated via the 
code generator to XML.  If I do this withing my IDE it works fine.  After 
deploying this to our application server (Sybase EAServer 5.3 using Java 
1.5.0_09) the same code fails with a NullPointerException.  The following stack 
trace is generated:

java.lang.NullPointerException
        at 
org.exolab.castor.xml.util.XMLClassDescriptorResolverImpl$DescriptorCache.loadMapping(XMLClassDescriptorResolverImpl.java:1032)
        at 
org.exolab.castor.xml.util.XMLClassDescriptorResolverImpl$DescriptorCache.loadPackageMapping(XMLClassDescriptorResolverImpl.java:942)
        at 
org.exolab.castor.xml.util.XMLClassDescriptorResolverImpl.getDescriptor(XMLClassDescriptorResolverImpl.java:505)
        at 
org.exolab.castor.xml.util.XMLClassDescriptorResolverImpl.resolve(XMLClassDescriptorResolverImpl.java:171)
        at org.exolab.castor.xml.Validator.validate(Validator.java:111)
        at org.exolab.castor.xml.Marshaller.validate(Marshaller.java:2527)
        at org.exolab.castor.xml.Marshaller.marshal(Marshaller.java:824)
        at org.exolab.castor.xml.Marshaller.marshal(Marshaller.java:730)
        at com.dac.castorbindings.stp.REQUESTS.marshal(REQUESTS.java:67)


The REQUESTS object is the one I generated using the code generator.  It 
appears that inside the XMLClassDescriptorResolverImpl class the getClassLoader 
method is returning null, but I am not sure why.  This technique worked 
correctly under castor 0.9.5.3 we are just finally getting around to upgrading. 
 

Correctly marshalled output would look like this:

<?xml version="1.0" encoding="UTF-8"?>
<REQUESTS ActionCode="R">
    <ADD>
        <REQUEST_TRANSACTIONS PlanID="CAD0000000001" 
EmployerIdentificationNumber="12345">
            <TRANSACTIONS>
                <TRANSACTION PlanID="CAD0000000001" 
TransEffectiveDate="2005-01-08">
                    <TRANSACTION_GENERAL_INFO>
                        <PlanID>CAD0000000001</PlanID>
                        <YearEndDate>2005-12-31</YearEndDate>
                        <ConfirmRequiredCode tc="N" />
                        <ProcessEligEntrCode tc="Y" />
                        <ProcessEligCompCode tc="Y" />
                        <ProcessEligHCECode tc="N" />
                        <TransEffectiveDate>2005-01-08</TransEffectiveDate>
                        <TransTypeCode tc="13" />
                        <PostAllDivisionsCode tc="Y" />
                    </TRANSACTION_GENERAL_INFO>
                </TRANSACTION>
            </TRANSACTIONS>
        </REQUEST_TRANSACTIONS>
    </ADD>
</REQUESTS>


Any ideas?

Thanks,
Doug



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