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Subject: Exception during initial tests

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From: Guy Rixon (gtr@ast.cam.ac.uk)
Date: Mar 19, 2003 14:14

Hi,

I'm trying to run uk.org.ogsadai.client.Client in the -demo mode but with a
GDS script matched to a database I have here at Cambridge instead of the
default database in the example script. Everything works (rather slowly) up
to the point where it says

-------------------------------------------------------------------------------
About to send the new GDS the script:
src/java/uk/org/ogsadai/service/gdsf/test/Example1.xml
for execution and then display the results.
-------------------------------------------------------------------------------

after which I get this exception:

Error:
AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.generalException
 faultSubcode:
 faultString:
 faultActor: null
 faultNode: null
 faultDetail:
        uk.org.ogsadai.wsdl.GridDataServiceSystemException:
     <description>SystemException whilst running script:
java.lang.ClassCastException</description>

        exceptionName: uk.org.ogsadai.wsdl.GridDataServiceSystemException
        stackTrace: AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.generalException
 faultSubcode:
 faultString:
 faultActor: null
 faultNode: null
 faultDetail:
        exceptionName: uk.org.ogsadai.wsdl.GridDataServiceSystemException

        at
uk.org.ogsadai.service.gds.GridDataServiceP2R1.performScript(GridDataServiceP2R1.java:146)

...plus many lines of stack-trace.

This is not a helpful error-message. Does anybody recognize this as a known
problem? Is it possible to say whether the error comes from a bug in the
OGSA-DAI code or from a mis-configuration? The GDS script follows.

<?xml version="1.0" encoding="UTF-8"?>
<!-- (c) International Business Machines Corporation, 2002, 2003. (c)
University of Edinburgh 2002, 2003.-->
<!-- See OGSA-DAI-Licence.txt for licencing information.-->
<GridDataServiceScript>
 <Header>
    <ScriptName>Example 1</ScriptName>
    <Version>
            <Config>config</Config>
            <ScriptEnvironment>environment</ScriptEnvironment>
    </Version>
    <Originator>GSR of Originator</Originator>
  </Header>
  <Body>
          <Documentation>Select with data delivered with the
response</Documentation>
         <DefineParameter name="table">catalogue</DefineParameter>
         <DefineParameter name="dec">POS_EQ_DEC > 60</DefineParameter>
        <Statement name="xyz" dataResource="MyDataResource">
                SELECT * FROM <UseParameter reference="table"/> WHERE
<UseParameter reference="dec"/>
        </Statement>
        <Delivery name="delivery">
                <Mechanism type="bulk"/>
                <Mode type="full"/>
                <From>xyz</From>
                <To>response</To>
        </Delivery>
        <Execute name="execute">xyz</Execute>
  </Body>
</GridDataServiceScript>

Guy Rixon gtr@ast.cam.ac.uk
Institute of Astronomy Tel: +44-1223-337542
Madingley Road, Cambridge, UK, CB3 0HA Fax: +44-1223-337523

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