Hi,
I'll apply the patch to get the null input going. Meanwhile, it seems that
there is some room for discussion in the sdo impl of XMLStreamHelper.
1) Should the methods on XMLStreamHelper accept null data ojbect?
2) In the case of an XMLDocument with null root, should we return an
XMLStreamReader corresponding to the following XML (assuming
{http://ns1}root is the root element qname)?
a) <p:root xmlns:p="http://ns1"/>
b) <p:root xmlns:p="http://ns1"; xis:nil="true"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
Maybe we could check if the root element is nilable.
What do you think, Kelvin/Frank?
Thanks,
Raymond
----- Original Message -----
From: "Scott Kurz (JIRA)" <[email protected]>
To: <[email protected]>
Sent: Monday, November 05, 2007 10:48 AM
Subject: [jira] Updated: (TUSCANY-1681) DataObject2XMLStreamReader can't
handle a null (or could this be an SDO bug??)
[
https://issues.apache.org/jira/browse/TUSCANY-1681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Scott Kurz updated TUSCANY-1681:
--------------------------------
Attachment: 1681.patch
Well, let me push the issue a bit by at least submitting a patch to return
null from each of the transformers:
XMLStreamReader2DataObject and DataObject2XMLStreamReader
upon passing a null 'source' as input.
I'm not sure if an alternative solution would be to, say, have
DataObject2XMLStreamReader pass back a XMLStreamReader
upon receiving a 'null' DataObject as input, in which case we could
probably remove this change to XMLStreamReader2DataObject .
And it's conceivable the SDO impl should be changed to handle passing a
null SDO into
XMLHelper.createDocument() and to pass back such a non-null
XMLStreamReader in such a case.
DataObject2XMLStreamReader can't handle a null (or could this be an SDO
bug??)
------------------------------------------------------------------------------
Key: TUSCANY-1681
URL: https://issues.apache.org/jira/browse/TUSCANY-1681
Project: Tuscany
Issue Type: Bug
Components: Java SCA Data Binding Runtime
Reporter: Scott Kurz
Fix For: Java-SCA-Next
Attachments: 1681.patch
When passing a null object into DataObject2XMLStreamReader I hit a NPE:
java.lang.NullPointerException
at
org.apache.tuscany.sdo.util.resource.DataObjectXMLStreamReader.populateProperties(DataObjectXMLStreamReader.java:277)
at
org.apache.tuscany.sdo.util.resource.DataObjectXMLStreamReader.<init>(DataObjectXMLStreamReader.java:116)
at
org.apache.tuscany.sdo.util.resource.DataObjectXMLStreamReader.<init>(DataObjectXMLStreamReader.java:104)
at
org.apache.tuscany.sdo.helper.XMLStreamHelperImpl.createXMLStreamReader(XMLStreamHelperImpl.java:80)
at
org.apache.tuscany.sca.databinding.sdo.DataObject2XMLStreamReader.transform(DataObject2XMLStreamReader.java:48)
at
org.apache.tuscany.sca.databinding.sdo.DataObject2XMLStreamReader.transform(DataObject2XMLStreamReader.java:37)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.mediate(MediatorImpl.java:77)
This is either:
* a bug in this specific transformer (my guess)
* a bug in SDO (I'm guessing not)
* a bug in the Tuscany databinding framework which should special case
nulls (I'd think we might want to let transforms decide on their own how
to handle null?)
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